Warm, Comfortable Heating Solutions
There’s nothing better than cuddling up under a blanket, sipping a cup of hot chocolate, and letting the relaxing, warm air wash over you. Of course, that comfort depends upon a working heating system, which all too many take for granted. Whether you rely on a gas furnace or a simple electric area heater, you’ll notice quickly when the heater breaks down!
That’s where the kind and courteous professionals at A 100% Guarantee Heating and AC come in. Not only do we provide affordable means to restore broken heating, we also offer ways to extend the life of your existing system. That’s just one of many reasons why countless local homeowners and businesses come to our Vacaville, CA heating company every year. If you need reliable assistance today, call our team at 707-689-5128.
Dependable Heating Services
From the latest efficient heat pumps to the traditional gas furnace, we support all of your heating systems! That means you can come to our team for practically any challenge you may be facing. Your personal HVAC technician will assess the problem and supply you with affordable solutions, so that you can make an informed choice that fits your budget.
Repairs
Prompt Heater Repair Service
Fast, reliable service makes all the difference for your HVAC system. When a faulty part forces your heater to slow down, the entire system strains itself to continue normal function. This accelerates part wear in other segments of your furnace (or boiler, etc.), and rapidly consumes extra energy. The end result is a worn down system and a scary utility bill, unless a trained HVAC professional takes care of the problem early on.
So how does A 100% Guarantee Heating and AC make sure that our team can provide both prompt and reliable heating services? First, we have on-call technicians available 24/7 for emergency situations. Second, we maintain an extensive collection of replacement parts. In other words, we arrive on site quickly, with all the tools we’ll need to get the job done then and there!
Installation and Replacement
Heating Appliance Installation
Take two furnaces with the same brand, model, and maintenance plan. One lasts for 12 years, the other for 20. What’s the difference between the two? Quality installation.
When a professional carefully examines the duct lines, connections, room dimensions, and other key elements to plan an installation project, you can feel confident about the future of your system. When heater services rush through to try to get to their next job? Not so much.
That’s why it pays to bring your furnace, boiler, heat pump, and electric heat system to our trusted HVAC technicians! Each of our heater services starts with discussion of your goals, detailed measurements, and product/need matching. Even before installation begins, you’ll see why so many homeowners come to our Vacaville, CA heating company. You’ll love the long-term results and efficiency too!
Maintenance
Affordable Maintenance Options
While installation ensures proper functionality for your heating system, maintenance guarantees continued health. Dirty parts, clogged filters, and other hazards can drain your central heating system’s efficiency, leading to spikes in energy consumption. Leaky ductwork takes an especially heavy toll on your monthly utility bills by wasting air and forcing longer run times to warm your home.
Our team at A 100% Guarantee Heating and AC offers several convenient solutions for your ongoing maintenance. Ask about these heating services by calling us at 707-689-5128!
Our Local Solutions
- Central Heating System Repair Contact our skilled HVAC technicians to schedule repairs or retrofits for your central heating systems!
- Gas Furnace Replacement Looking to upgrade an existing furnace or install one for the first time? We’d love to help you make your system last.
- Electric Heat System Repair Not everyone requires house-wide heating. Our area heating solutions allow you to save money and effort!
- Electric Furnace Replacement With widespread access to electricity, anyone can enjoy these efficient furnace systems! Talk with us about finding your solution.
Find Your Convenient Heater Services!
Our friendly staff at A 100% Guarantee Heating and AC would love to answer questions, or help you arrange service at a time that’s convenient for your busy schedule! All it takes is a brief call to our local office at 707-689-5128. If you like, feel free to see what other homeowners and businesses have to say about our Vacaville, CA heating company in the reviews. Just remember, the sooner you contact us for your service, the faster we can get to work and provide relief.
Most Recent Pins (110)
Evan Thompson
A 100 Guaranteed Heating and AC cleaned the indoor coil and vacuumed multiple drain pans in Woodland, California. Technicians also cleared a clogged condensation line to stop water from leaking into the secondary pan. The HVAC system is now operating within proper specifications.
Evan Thompson
A 100 Guaranteed Heating and AC inspected a faulty outdoor breaker and a non-working thermostat with one heating and one cooling stage in Fairfield, California. The technician identified the breaker as stuck and non-functional, requiring service from either an electrician or a coordinated visit with one for repair.
Evan Thompson
A 100 Guaranteed Heating and AC completed a summer readiness HVAC check in Napa, California. The technician confirmed all systems function properly with no issues found. This service ensures the air conditioning unit operates efficiently for warm weather conditions.
Evan Thompson
A 100 Guaranteed Heating and AC inspected two mini split AC units in Dixon, California. One unit showed a cracked copper line and low pressure, possibly needing warranty service or replacement. The second unit required minor cleaning. Twelve other units were confirmed operational. The technician documented all findings and assessed next steps for repair.
Evan Thompson
A 100 Guaranteed Heating and AC completed a full inspection of two HVAC units in Fairfield, California. Technicians confirmed proper refrigerant levels, working compressors, balanced temperature splits, and operational motors. Both systems passed all performance checks and are ready for summer use.
Evan Thompson
A 100 Guaranteed Heating and AC inspected an HVAC system in Fairfield, California. The technician confirmed the compressor and coils function properly but identified a condenser fan motor drawing excess amps. The motor requires replacement with a 14-inch, 1100 RPM unit to prevent further issues and maintain system performance.
Evan Thompson
An HVAC technician in Vacaville, California inspected an air conditioner and confirmed the compressor was functioning properly. The fan motor showed signs of nearing full load amperage. The technician advised the homeowner that if performance drops, the motor may require replacement.
Evan Thompson
A technician from A 100 Guaranteed Heating and AC completed a summer readiness check on an HVAC system in Vallejo, California. The work included checking the compressor, motors, and furnace, confirming proper operation. The technician also replaced the air filter and verified the system was functioning efficiently.
Evan Thompson
A technician in Vacaville, California replaced a failed AC contactor. The contactor controls high-voltage power inside the unit and can wear out over time. Replacing it restored cooling and protected system components from electrical issues caused by faulty switching.
Evan Thompson
A 100 Guaranteed Heating and AC inspected an HVAC system in Vacaville, California. Technicians found the compressor and refrigerant levels operating normally. They identified a failing condenser fan motor and recommended replacement with a 14-go 825 RPM motor. The unit continues to run but may overheat if the motor is not replaced.
Evan Thompson
A 100 Guaranteed Heating and AC inspected a 2,500 sq ft home in Vacaville, California. Technicians identified crushed and kinked ductwork limiting airflow in multiple rooms. They evaluated the zoning system with 14 barrel dampers and confirmed two return vents. The team recommended duct adjustments to improve airflow, while confirming the HVAC system functioned properly.
Evan Thompson
A 100 Guaranteed Heating and AC inspected heating and cooling systems in Vallejo, California. Both units functioned properly during a cold weather check. The homeowner requested future service to improve upstairs cooling. Technicians advised returning during warmer conditions to better evaluate airflow concerns and recommend possible adjustments.
Evan Thompson
A 100 Guaranteed Heating and AC visited a home in Vallejo, California to evaluate the addition of a central air conditioning system to an existing furnace. The homeowner requested installation details for review with the HOA. A follow-up meeting was scheduled to discuss system specifications and installation options.
Evan Thompson
A 100 Guaranteed Heating and AC inspected an HVAC unit in Vallejo, California. The technician identified a failed condenser fan motor and capacitor. Both components are outside acceptable limits. A repair estimate will follow. Once replaced, the technician can measure refrigerant levels accurately to ensure system functionality.
Evan Thompson
A 100 Guaranteed Heating and AC installed a new 95% efficiency Coleman HVAC system in Vacaville, California. The installation provides improved heating and cooling performance while reducing energy use. This project supports consistent indoor comfort with high-efficiency equipment.
Evan Thompson
A technician inspected an HVAC system in Woodland, California. The unit was working but required a new thermostat. The outdoor motor showed signs of failure due to restricted airflow from blocked coils, which also affected the compressor's ability to stay cool. Prompt replacement of both components was recommended.
Evan Thompson
A 100 Guaranteed Heating and AC replaced a faulty condenser fan motor in Woodland, California. The technician reset the condenser for temporary function and advised replacing two bedroom vents with 6x12 models to improve airflow, as the current side-dispersing vents reduce air delivery.
Evan Thompson
A 100 Guaranteed Heating and AC installed a new hard start and capacitor for an air conditioning unit in Woodland, California. The technician advised a deep coil cleaning due to clogged filters and checked system pressures. Cooling resumed, but a possible metering device clog may need further attention after cleaning.
Evan Thompson
A technician inspected a Payne AC system in Davis, California. They confirmed good compressor performance and clean coils. The ductwork is undersized for the 2,700-square-foot home. The master bedroom receives limited airflow. The outdoor fan motor is failing and requires replacement to maintain system function.
Evan Thompson
A 100 Guaranteed Heating and AC inspected a Goodman HVAC unit in Woodland, California. The technician identified a failing condenser fan motor that overheats within minutes. While the rest of the system functions normally, extended use in warmer weather may cause the motor to fail due to its 14-hour, 1100 RPM runtime.
Evan Thompson
A 100 Guaranteed Heating and AC replaced a failing outdoor fan motor and installed a new filter on an aging HVAC unit in Vacaville, California. The team also replaced exposed high-voltage lines with a sealed whip to improve safety and system reliability.
Evan Thompson
A 100 Guaranteed Heating and AC inspected a 10-year-old Trane unit in Martinez, California. The technician confirmed the system runs well and shows no visible damage. The air conditioning is fully prepared for summer use.
Evan Thompson
A 100 Guaranteed Heating and AC completed a summer readiness check for an HVAC system in Isleton, California. The technician inspected the unit and confirmed all components are functioning properly. No issues were found. The system is fully prepared for continued use during high temperatures.
Evan Thompson
An HVAC technician in Vallejo, California inspected a cooling system and confirmed it is operating properly. The condenser fan motor is running at maximum rated load amps but remains within safe limits. The technician recommends monitoring the motor and scheduling a filter cleaning reminder in three months to maintain system performance.
Evan Thompson
A technician inspected an air conditioning unit in Vacaville, California. The refrigerant levels, compressor, and condenser fan motor were working correctly. The indoor blower showed higher than normal amperage but no functional issues. Temperatures were within range. The system was confirmed to be operating properly and ready for continued summer use.
Evan Thompson
A 100 Guaranteed Heating and AC inspected an AC system in Vacaville, California. The filters were clean, refrigerant was at proper levels, and compressor function was normal. The condenser fan motor showed increased amperage and heat. The system will need a 1075 RPM, 1.5 HP condenser fan motor replacement soon to maintain cooling performance.
Evan Thompson
A 100 Guaranteed Heating and AC installed a new control board on a Coleman HVAC system in Fairfield, California. The technician completed all necessary checks and confirmed the system functions properly. This service restored full operation to the heating and cooling unit.
Evan Thompson
Technicians replaced 95% of a damaged furnace after finding a crack in the heat exchanger. This heating system repair took place in St. Helena, California. The replacement restored full function to the unit, resolving the issue and ensuring safe operation.
Evan Thompson
A technician in Fairfield, California inspected an HVAC system, confirmed normal compressor and fan motor performance, and cleaned a garage filter. They noted a possible heat exchanger crack and advised a fall inspection using a carbon monoxide reader and camera. The air conditioning system showed no issues and was confirmed ready for summer use.
Evan Thompson
A 100 Guaranteed Heating and AC inspected a Carrier condenser in Vacaville, California. The technician confirmed proper cooling and normal compressor operation. The outdoor fan motor showed high amperage but no overheating. Coil condition is good. Filter replacement was noted. The fan motor may need replacement later, depending on system performance.
Evan Thompson
A 100 Guaranteed Heating and AC completed an air conditioning system check and vent adjustment in Davis, California. The technician confirmed proper cooling performance, verified fan motors, and adjusted apartment vents to meet resident preferences. The unit was confirmed ready for summer use with no issues found.
Evan Thompson
A 100 Guaranteed Heating and AC installed a new condensation pump and verified system performance in Vacaville, California. The split system, filters, coils, and amp draws all met specifications. The air conditioning unit is now prepared for consistent summer operation.
Evan Thompson
A 100 Guaranteed Heating and AC provided an estimate for a new evaporator coil after identifying a hole in the existing unit. This service took place in Woodland, California.
Evan Thompson
A 100 Guaranteed Heating and AC inspected an aging HVAC system in Dixon, California. Technicians recommended cleaning the indoor evaporator coil, clearing the drain pan and condensation line, and replacing the failed ECM motor. They restored power to the outdoor condenser for diagnostics and advised a full system replacement due to extensive wear.
Evan Thompson
A 100 Guaranteed Heating and AC installed a variable speed blower motor for a Lennox HVAC system in Woodland, California. The technician completed the installation and confirmed the system runs correctly. This service improves airflow control and energy use in residential heating and cooling systems.
Evan Thompson
A 100 Guaranteed Heating and AC inspected a Carrier system in Fairfield, California. The technician cleaned the pressure switch and flame sensor. After testing the system through multiple cycles, the indoor blower motor responded correctly to thermostat commands and operated normally.
Evan Thompson
A technician in Woodland, California, inspected a York furnace with a failed indoor blower motor. The blower assembly dropped due to a broken belly band, causing the motor to seize and smoke. The technician tested capacitors, confirmed they worked, and recommended replacing both the indoor blower motor and the belly band.
Evan Thompson
A technician repaired a Carrier furnace in Vacaville, California. The service involved correcting a door that was not fully closed, which triggered the furnace's safety feature and prevented it from starting. The technician restored the door to its proper position to allow normal furnace operation.
Evan Thompson
A 100 Guaranteed Heating and AC diagnosed HVAC issues in Woodland, California. The technician replaced a faulty thermostat and identified a control board with intermittent power. After testing the system wiring and connections, they recommended replacing the board to restore consistent performance. The system warmed and cooled more reliably following these changes.
Evan Thompson
A technician replaced a failed variable speed motor on a Lennox furnace in Woodland, California. The new part was sourced directly from Lennox and installed to restore full heating system function.
Evan Thompson
A 100 Guaranteed Heating and AC installed a new Coleman three-ton, 17 SEER heat pump system in Vacaville, California. The upgrade improves energy efficiency and provides reliable heating and cooling year-round. The customer expressed satisfaction with the installation and system performance.
Evan Thompson
A 100 Guaranteed Heating and AC serviced a Carrier HVAC system in Fairfield, California. The technician replaced a dirty air filter, adjusted dip switches for the variable-speed blower motor, and programmed the system to shift to high stage after 5–10 minutes. These steps restored proper airflow and ensured efficient operation.
Evan Thompson
A technician in St. Helena, California repaired a Rudd furnace by securing a failed condensate line. The work included re-strapping and re-gluing sections of the line to restore proper drainage. The heating system now operates correctly and without interruption.
Evan Thompson
A 100 Guaranteed Heating and AC installed a new Coleman 80% 3-ton furnace and a 14.3 SEER air conditioner at a residential property in Vacaville, California. The team completed the HVAC system installation to improve heating and cooling efficiency for the home.
Evan Thompson
A technician in Davis, California repaired a detached drain pan by replacing a failed support strap. They reattached the plenum and sealed the transition to the evaporator coil. The HVAC system is now fully restored and functioning correctly.
Evan Thompson
A technician in Vallejo, California, replaced a faulty run capacitor in a Carrier HVAC system. The blower was not working properly under the customer’s home warranty. After replacing the capacitor, the system functioned as intended.
Evan Thompson
A technician in Vacaville, California removed a faulty contactor from an HVAC system and installed a new 220V contactor. This service restored proper electrical control to the unit, improving system function and safety.
Evan Thompson
A 100 Guaranteed Heating and AC diagnosed and replaced a faulty Molex plug that caused heating failure. The technician cleaned the flame sensor and removed debris near the limit switches. Vibrations from the blower were disrupting the connection. Service was completed in Fairfield, California.
Evan Thompson
A technician in Woodland, California diagnosed a furnace lockout caused by a faulty primary limit switch. They identified airflow restriction due to a clogged air filter as the main issue. The unit was temporarily restored by bypassing the switch, and the flame sensor was checked in preparation for full repair.
Evan Thompson
A technician inspected a nonresponsive furnace in Fairfield, California, and found a failed main control board. The unit, a Nordyne system over 20 years old, may need full replacement. The team will provide a repair estimate before proceeding.
Evan Thompson
Technicians inspected a Carrier furnace in Davis, California after reports of no heat. They replaced a faulty surface igniter and used a camera to check the heat exchanger. The inspection revealed cracks, which led to the unit being condemned. The customer used a home warranty to reduce replacement costs.
Evan Thompson
A 100 Guaranteed Heating and AC completed an annual tune-up on a Coleman 80% efficiency furnace in Napa, California. The technician inspected and serviced the unit to ensure proper function for the upcoming season. The system passed all checks and is operating as expected.
Evan Thompson
A 100 Guaranteed Heating and AC installed a 3-ton, 18 SEER Coleman heat pump system in Vacaville, California. The team also completed attic insulation and replaced all ductwork to improve airflow and energy efficiency.
Evan Thompson
A 100 Guaranteed Heating and AC replaced undersized ductwork to improve airflow and system efficiency in Fairfield, California. Technicians removed old ducts and installed enlarged ducts to support proper air circulation and equipment performance. This upgrade ensures the system runs reliably and maintains consistent indoor comfort.
Evan Thompson
A 100 Guaranteed Heating and AC replaced a faulty blower motor under warranty in a 3-ton package unit. The team restored the air conditioning system to working condition. This HVAC repair service was completed in Vacaville, California.
Evan Thompson
A 100 Guaranteed Heating and AC replaced a silicone nitride igniter in a residential heating system in Fairfield, California. The team restored full system function, ensuring proper ignition and consistent heat output. This service helps maintain reliable performance and extends the unit’s lifespan.
Evan Thompson
A 100 Guaranteed Heating and AC inspected a 22-year-old HVAC system in Dixon, California, and found a failed capacitor. The technician provided an estimate to replace the unit with a new 5-ton Coleman heat pump system.
Evan Thompson
A 100 Guaranteed Heating and AC installed a 3-ton, 18 SEER Coleman heat pump system in Vallejo, California. This setup improves heating and cooling efficiency in residential spaces and supports long-term energy savings through reduced power consumption.
Evan Thompson
A 100 Guaranteed Heating and AC installed a 3-ton packaged HVAC unit in Napa, California. This installation supports efficient heating and cooling for residential or commercial properties, offering reliable climate control through a compact system.
Evan Thompson
A 100 Guaranteed Heating and AC completed an annual HVAC tune-up in Vallejo, California. The technician inspected system components, cleaned essential parts, and tested the unit for proper function. This service helps maintain efficiency and reduce the chances of unexpected breakdowns.
Evan Thompson
A 100 Guaranteed Heating and AC installed a 4-ton heat pump in Fairfield, California. The team completed the installation to support efficient heating and cooling for the property. This service helps maintain indoor temperature control across seasons.
Evan Thompson
A 100 Guaranteed Heating and AC installed a new furnace in Vallejo, California. The team completed the heating system installation to support reliable indoor temperature control for the property. This service improves heat delivery by replacing outdated or non-functional equipment with a new furnace unit.
Evan Thompson
A 100 Guaranteed Heating and AC installed a new furnace in Vallejo, California. The team completed the full unit installation, ensuring the system was in place and ready for use. This service focused only on the furnace without additional HVAC components.
Evan Thompson
A 100 Guaranteed Heating and AC performed annual maintenance on a residential air conditioning unit in Fairfield, California. The technician inspected components, cleaned filters, and checked system performance to ensure efficient operation. Regular service helps maintain system reliability and improve energy efficiency.
Evan Thompson
A 100 Guaranteed Heating and AC installed a new gas heating system for a homeowner in Vallejo, California. The team provided an initial estimate and completed the full installation after customer approval. This service improved home heating efficiency and reliability through professional system replacement.
Evan Thompson
A 100 Guaranteed Heating and AC repaired a 34-year-old Day & Night furnace in Napa, California. Technicians first inspected the heat exchanger to confirm there were no carbon monoxide leaks before completing the repair to restore safe furnace operation.
Evan Thompson
A 100 Guaranteed Heating and AC completed a routine tune-up on a 20-year-old package HVAC unit under a silver energy maintenance plan in Fairfield, California. Regular maintenance supports system performance and helps extend equipment lifespan over time.
Evan Thompson
A 100 Guaranteed Heating and AC replaced outdated ductwork in a modular home to fix poor airflow. Technicians inspected the existing system and installed new ducting. This service took place in Sonoma, California.
Evan Thompson
A technician in Vallejo, California inspected a furnace and found failed silicone around the flue. The team removed the damaged sealant and applied new silicone to secure the connection safely. This repair improved furnace performance and sealed the ventilation path properly.
Evan Thompson
A 100 Guaranteed Heating and AC completed an HVAC system inspection and grill cleaning in Fairfield, California. A blocked return grill was restricting airflow to the heat exchanger. Technicians cleaned the grill, restoring proper airflow and system function. Regular maintenance helps prevent airflow issues and supports efficient heating and cooling performance.
Evan Thompson
A technician cleared a bug-clogged p-trap in a 95% furnace, restoring full operation. The service ensured the heating system worked efficiently again. This furnace repair was completed in Winters, California.
Christina Evangelista
A technician in Davis, California, identified a leak in a Lennox furnace and replaced the emergency drain pan. This repair helped prevent water damage and ensured the furnace operated safely.
Christina Evangelista
A technician repaired a Lennox HVAC system in Fairfield, California. They identified a faulty transformer, completed wire repairs, and adjusted the limit switch to restore proper system function.
Christina Evangelista
A technician in Vallejo, California diagnosed a faulty zone board in a Carrier HVAC system. They replaced the malfunctioning component, restoring full system function. The heating and cooling system now operates correctly after the repair.
Christina Evangelista
A 100 Guaranteed Heating and AC replaced a faulty transformer and installed a low-voltage fuse on a Bryant condenser in Fairfield, California. The technician identified the power issue and completed electrical repairs, restoring the unit’s performance.
Christina Evangelista
A technician in Woodland, California replaced a damaged Goodman system due to a cracked heat exchanger. The service included removing the faulty furnace, air conditioner condenser, and evaporator coil, and installing new Carrier brand components to restore full HVAC function.
Christina Evangelista
A technician in Vallejo, California diagnosed a Lennox furnace that failed to start. The technician identified a faulty flame sensor, replaced the part, and restored full operation. The repair ensures the furnace now runs correctly and responds as expected.
Christina Evangelista
A 100 Guaranteed Heating and AC diagnosed a faulty thermostat on a Trane system in Vallejo, California. The technician replaced the non-working unit with a new Honeywell thermostat to restore system control and temperature accuracy.
Christina Evangelista
A technician replaced a failed capacitor in a Carrier HVAC system. The repair restored full function to the unit. This service took place in Vallejo, California.
Christina Evangelista
A technician repaired a Bryant Extreme Heat Pump system in Fairfield, California. The system had a blown fuse, which caused a malfunction. The technician replaced the damaged fuses with new ones. After the repair, the heat pump resumed normal operation.
Christina Evangelista
A technician replaced a failed fan motor on a Lennox condenser unit. The repair restored full system functionality. This HVAC service took place in Vallejo, California.
Christina Evangelista
A technician in Vacaville, California diagnosed a non-operational condenser and identified a failed fan motor. The team replaced the fan motor on a Carrier system. After replacement, the air conditioning system resumed normal function.
Christina Evangelista
A technician in Vallejo, California replaced two outdated thermostats with Honeywell models and installed new thermostat wiring. This thermostat upgrade improves energy efficiency and system control.
Christina Evangelista
A technician in Fairfield, California diagnosed a Goodman furnace that would not start. The issue was traced to a broken door switch that failed to keep the furnace door closed. The latch was repaired, restoring normal system operation.
Christina Evangelista
A technician in Vacaville, California replaced two faulty fuses on a Lennox HVAC system. The technician identified the issue during inspection and restored proper system function after replacing the damaged components.
Christina Evangelista
A technician replaced a failed inducer motor on a Goodman heating system. The repair restored full system function. This service was completed in Vallejo, California.
Christina Evangelista
A technician in Fairfield, California, diagnosed a faulty thermostat on a Carrier HVAC system and replaced it with a new Honeywell thermostat. This service restored proper temperature control and ensured system performance.
Christina Evangelista
A technician in Vallejo, California diagnosed a non-working Carrier HVAC unit. The technician identified faulty fuses and replaced them. After the fuse replacement, the system resumed normal operation.
Christina Evangelista
A technician replaced the evaporator coil on a Lennox HVAC system in Fairfield, California. This service restores proper airflow and cooling performance by removing a failed coil and installing a new component. The work ensures the system runs efficiently and supports consistent indoor climate control.
Christina Evangelista
A technician in Fairfield, California replaced a faulty thermostat with a new Honeywell model. The replacement restored proper system operation and resolved the heating and cooling issue.
Christina Evangelista
A technician replaced a failed dual run capacitor in an HVAC system. The system now runs correctly after the capacitor installation. Service was completed in Santa Rosa, California.
Christina Evangelista
A technician cleaned a heavily soiled evaporator coil during a service visit in Tacoma, Washington. The team removed buildup to support proper airflow and system performance. This routine HVAC maintenance helps prevent strain on cooling systems and supports long-term reliability.
Christina Evangelista
A technician in Fairfield, California inspected an HVAC unit and identified a clogged air filter. The technician removed and cleaned the filter to restore airflow and improve system performance.
Christina Evangelista
A technician diagnosed a failed fuse in an HVAC system and replaced it to restore proper function. This service was completed in Vallejo, California.
Christina Evangelista
A technician diagnosed an HVAC system and replaced a faulty fuse in Vacaville, California. This service helped restore full system function and prevented further electrical issues. Regular HVAC diagnostics reduce downtime and extend equipment life.
Christina Evangelista
A technician replaced a high limit switch on a rooftop package HVAC unit in Lodi, California. This component helps protect the system by shutting it down if temperatures exceed safe levels, ensuring continued operation and safety.
Christina Evangelista
A 100 Guaranteed Heating and AC replaced an existing thermostat with a Honeywell unit in Vallejo, California. The technician removed the old device, connected the new thermostat, and tested system compatibility. This service improved temperature control and system responsiveness in the home.
Christina Evangelista
A 100 Guaranteed Heating and AC replaced an existing thermostat with a Honeywell thermostat in Fairfield, California. The service included removing the old unit and ensuring proper installation and function of the new programmable model for accurate indoor climate control.
Christina Evangelista
A technician in Vacaville, California diagnosed and replaced a faulty circuit board on a Payne furnace. The technician also installed a new Honeywell thermostat to restore proper heating system function.
Christina Evangelista
A technician diagnosed and replaced a broken high surface igniter on a Trane furnace in Vacaville, California. This service restored proper heating function and ensured safe ignition performance for the system.
Christina Evangelista
A technician from A 100 Guaranteed Heating and AC provided an estimate for a full HVAC system replacement using a Bryant unit in Vacaville, California.
Christina Evangelista
A technician replaced a damaged collector box and faulty high limit switch on a Goodman furnace in Vallejo, California. The service ensured proper furnace operation by addressing airflow and safety control issues. This repair improves heating performance and prevents overheating during system use.
Christina Evangelista
A 100 Guaranteed Heating and AC diagnosed and replaced a run capacitor on a Carrier unit in Davis, California. This service restored proper function to the air conditioning system by addressing electrical issues affecting the compressor and fan motor.
Christina Evangelista
A 100 Guaranteed Heating and AC replaced a high voltage fuse and run capacitor on a Goodman HVAC unit in Martinez, California. The service restored electrical function and improved system performance. This repair addressed immediate operational failure and helped maintain reliable air conditioning.
Christina Evangelista
A technician replaced a fuse on a Carrier HVAC unit in Fairfield, California. This service restored proper electrical function to the system and helped prevent further issues. Timely fuse replacement helps maintain system safety and performance.
Christina Evangelista
A technician replaced a low voltage fuse on a Carrier HVAC unit in Fairfield, California. This service restored electrical functionality and ensured stable system performance. Fuse replacement helps prevent further damage from power interruptions or electrical surges in heating and cooling systems.
Christina Evangelista
A technician replaced blown fuses on a Carrier HVAC unit in Vallejo, California. This service restored proper electrical flow, allowing the system to operate safely and efficiently. Timely fuse replacement helps prevent system failure and supports consistent indoor climate control.
Christina Evangelista
A 100 Guaranteed Heating and AC installed a new Bryant package unit in Davis, California. The team placed the system to improve airflow and ensure proper climate control. This installation supports efficient heating and cooling throughout the property, using a reliable, all-in-one HVAC solution suited for residential or light commercial use.
Evan Thompson
A technician inspected a furnace in Fairfield, California, after the homeowner reported a clicking noise while the unit was completely off. The service focused on identifying potential electrical or mechanical issues that could cause sounds when the system is inactive.
Evan Thompson
A 100 Guaranteed Heating and AC replaced a failed run capacitor on a blower for an aging Gibson HVAC system in Fairfield, California. This repair restored airflow and prevented further strain on the unit.
Most Recent Reviews (1)
Sep 01, 2023
Truly an outstanding company!
I had forgotten to have my HVAC system checked for a couple of years after our last repair. They reached out recently to check on how things were going, very friendly and no sales pitch! I realized how long it had been since I last spoke to them and I couldn’t believe how long their last repair held up on such an old system!
When I mentioned this, the office lady asked if we had been getting the annual maintenance done over the last few years. Since we had been putting it off over and over- i figured the best time would be now. I’m glad I don’t have that nagging at me randomly in the back of my head anymore.
The technician was professional and clearly knew what he was doing. After he finished he answered all my questions and updated us on the things that caught his eye.
I know the system will need to be replaced soon (it’s OLD!) but after he did the tune up, I’ve felt a huge difference in the house and he gave me some tips on how to keep it that way.
At least I won’t slack on having it serviced again since I pay monthly and they will be reaching out to me instead. I totally worth it!
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