Keep Your Home Comfortable With Quality HVAC Services In Wallingford CT
X-Treme Temp Heating & Cooling is your go-to HVAC service provider in Wallingford, CT! We’re the experts in home comfort year-round, from AC and heating repair to ductwork and water heaters. We’ve got you covered from installation to maintenance so you can have peace of mind about your heating and air conditioning.
Read the reviews below from Wallingford, CT residents to see what your neighbors say about our expertise and customer service. We can’t wait to work with you!
Local Reviews
for Wallingford, CT
Customers say: The reviews reflect an overwhelmingly positive sentiment toward the HVAC service company. Customers consistently express high satisfaction with the technicians' professionalism, punctuality, and technical expertise. A recurring theme throughout the feedback is appreciation for clear communication, with many clients highlighting how thoroughly technicians explained problems, solutions, and repair processes in understandable terms. The service quality is repeatedly praised, with customers noting efficient troubleshooting, thorough maintenance work, and effective problem resolution. Many reviewers indicate strong loyalty to the company, mentioning they are repeat customers or plan to use the service again in the future. The overall tone is decidedly positive, with customers valuing the company's responsiveness, reasonable pricing, and the technicians' friendly demeanor. The reviews collectively portray a reliable HVAC service provider that delivers quality workmanship while maintaining excellent customer relations.
Our Reviews by City
Fantastic Service
Jeff - Wallingford, CT 06492
From scheduling my appointment to getting the job done, Larry, Jerry and everyone at Xtreme had me covered. They kept me posted about when they would arrive and they were on time. I wouldn’t recommend any other HVAC company.
Very good service
Lisa - Wallingford, CT 06492
Professional employees, and service
Otto - Wallingford, CT 06492
Excellent ,professional work,explains issues. I recommend extreme to everybody I talk to., Thank you
Honest and thorough
Mike - Wallingford, CT 06492
Very knowledgeable and thoroughly explained everything that needed to be done to fix our AC
Great service!
Beth - Wallingford, CT 06492
Superior customer service and friendly as well! Clearly explained status of equipment and updates needed.
Amazing service
Joan - Wallingford, CT 06492
Needed a new oil tank as mine was the original from 1985… replaced today with a gorgeous new ‘tank within a tank’ with an app that I can see the oil level on my phone which will give me peace of mind when away from the house in the winter. Knowledgeable guys, effective and efficient. Highly recommend!!
Great service!
Norma - Wallingford, CT 06492
We had an oil leak and water dripping from valve. Larry assessed the problem and offered consise suggestions and options for current and future ! Appreciated his knowledge and expertise.
Fast, Friendly, and efficient.
luke - Wallingford, CT 06492
Excellent service at a reasonable price.
Ron - Wallingford, CT 06492
Larry was great he walked me through his findings and listed out everything he did. I highly recommend Extreme to my family and friends
Excellent work !!
Judy - Wallingford, CT 06492
Andrew is a fine representative of your company. He is thorough and efficient. I would recommend him and your company to anybody that asks. Thank you as always.
Always the best!
Joan - Wallingford, CT 06492
Such a great company! Dependable, knowledgeable and experienced, and at a fair price.
Excellent Service
Lagase - Wallingford, CT 06492
Technician is always awesome. Thorough and very polite.
Great service
Bob - Wallingford, CT 06492
Excellent experience. They are very good and very knowledgeable ,fixed the issue with my heater in a remarkably short time
Excellent service!
Doll - Wallingford, CT 06492
X-treme Heating and Cooling replaced our A/C and have been servicing our systems since we moved in six years ago. They are always professional, polite, responsive and reasonable. Highly recommend.
Excellent Service
Lia - Wallingford, CT 06492
Great service experience!
Pete - Wallingford, CT 06492
Thanks for the great service. Andrew was very professional and knowledgeable about our heating system. He provided great detail on how the system works and provided recommendations to improve it. Very much appreciated the timely service.
Service was excellent
MaryAnne - Wallingford, CT 06492
Excellent service
MaryAnne - Wallingford, CT 06492
Always a pleasure
Sam - Wallingford, CT 06492
Great service!
Eileen - Wallingford, CT 06492
As always Andrew and his apprentice were welcome professionals to our home. Communication, timeliness, expediency, neatness, and price all great.
Very satisfied
Piroska - Wallingford, CT 06492
Larry came on time, and fixed the problem quickly and professionally. I had excellent experience with him and I can’t thank enough to Lisa . Definitely recommend to anyone !!
Excellent service
Paul - Wallingford, CT 06492
Arrived on time. Appeared to know exactly what to do. Excellent and friendly service.
Great service!
Seamus - Wallingford, CT 06492
Larry was on time and very professional. They reached out ahead to confirm as well, which was nice. He provided the requested testing/tune up and was able to help with some minor issues that were discovered, right then and there. I would highly recommend.
Great service
Bill - Wallingford, CT 06492
Andrew got right to work. I observed that he was also sharing his knowledge with his helper.
Reliable, competent, and customer-oriented
Marisa - Wallingford, CT 06492
I’ve used Xtreme for all of my HVAC needs (new furnace, ductless and HW heater included. They are skilled, reliable, and straightforward. Their prices are transparent and reasonable
Larry H.
the discharge temperature for heating was between 125-130°F, and for cooling, it was between 46-50°F. The system is now operating efficiently and properly.
Larry H.
I conducted a comprehensive preventive maintenance service on the air conditioning system. I began by clearing the drain line to ensure proper drainage and prevent water buildup. The air filter was inspected and found to have been replaced during the previous heating season maintenance. I then checked and tested the condensate pump to confirm it was functioning correctly. The condenser was thoroughly rinsed to remove any accumulated dirt and debris. I inspected all electrical connections for any signs of wear or damage. Pressure and temperature readings were taken to ensure the system was operating within optimal parameters. The system was found to be in excellent condition and operating efficiently.
Larry H.
I conducted a comprehensive preventive maintenance service on the air conditioning system. I began by blowing out the drain line to ensure proper drainage. Next, I checked the air filter, which the customer replaced. I then rinsed the condenser to remove any accumulated debris. Following this, I meticulously checked all electrical connections for any signs of wear or damage. I also measured and recorded the system's pressures and temperatures to confirm optimal performance. The system is now operating efficiently.
Larry H.
Upon arrival, I inspected the system and discovered that the service switch at the boiler was turned off. I turned the switch on, and the boiler started functioning correctly. It is likely that a plumber, who was working on the bathroom above the boiler room over the weekend, inadvertently turned off the switch. I noticed some water on the floor beneath the pressure relief valve. After allowing the boiler to reach its operating temperature, I observed that the valve was still leaking. I recommended replacing it. I then shut off the boiler, drained some water, removed the faulty valve, and installed a new one. After opening the valves and refilling the system with water, I checked for leaks and confirmed that the system is now operating properly.
Larry H.
I began by safely turning off the system to ensure no electrical hazards. I then disassembled the indoor unit, carefully removing all components. The evaporator coil and blower wheel were chemically washed to remove any accumulated dirt and debris. I also cleaned the covers to ensure they were free of contaminants. After washing, I reassembled the unit, ensuring all parts were securely in place. I started the system and conducted thorough testing to confirm that it was functioning correctly and efficiently. The job was completed with attention to detail and a focus on maintaining optimal performance.
Andrew H.
I conducted a thorough inspection of the indoor evaporator coil and blower compartment, ensuring all electrical connections and safety features were in proper working order. I checked voltage and amperage levels, visually inspected the air filter, and rinsed the condenser coil. The drain line was blown out, and water was poured to confirm proper drainage. Refrigerant levels were found to be critically low, which I promptly brought to the customer's attention. After discussing options, the customer opted for a replacement quote instead of adding refrigerant. I took detailed pictures and measurements for the replacement quote, ensuring the maintenance price will be subtracted from the installation cost. Additionally, I performed duct diagnostics.
Larry H.
Commercial HVAC Service: Completed service for a small office building where employees reported inconsistent temperatures between work areas. Inspected the zoning controls, tested dampers, and recalibrated thermostats throughout the building. Also cleaned return grilles and verified airflow balance at multiple vents. Comfort levels are now more stable across all office spaces.
Dyllan M.
Commercial Cooling Maintenance: Performed preventative maintenance on multiple rooftop cooling units for a commercial client experiencing uneven indoor temperatures. Cleaned condenser coils, checked belt alignment, inspected capacitors, and verified thermostat operation across all zones. Systems are now running more efficiently with improved airflow and temperature control.
Andrew H.
During the maintenance, I thoroughly inspected the indoor evaporator coil and blower compartment. All electrical connections and safety features were checked, along with volts and amps. The air filter was visually examined, and the condenser coil was rinsed. The drain line was blown out and tested for proper drainage. Refrigerant levels and the capacitor were checked, and temperatures were taken. The thermostat operation was tested. A broken section of thermostat wire at the outdoor unit was identified, removed, and replaced with a new section. The unit is now functioning correctly.
Andrew H.
Upon arrival, the unit was off. I turned it on, and the air handler started, but the condenser did not. I opened the electrical compartment and found no 24v at the contactor, despite having 24v entering the unit. Investigating further, I discovered the high pressure switch was tripped, preventing the contactor from receiving 24v. I reset the high pressure switch, and the compressor and fan motor started. However, the fan speed fluctuated intermittently. After a few minutes, the fan slowed and began smoking slightly, indicating a failing motor. The overheating caused the outdoor unit to trip on high pressure. With customer authorization, I replaced the faulty fan motor. I started the unit to verify the replacement motor's polarity and tested its operation. The unit is now functioning properly.
Andrew H.
Upon arrival, the condenser was off. I opened the electrical panel and discovered the capacitor had failed. The top of the capacitor was bubbling, leaking oil, and was open internally on all legs. After obtaining customer authorization, I replaced the faulty capacitor with a new one. I inspected the wiring and found no damage or loose connections. I started and tested the system, finding it low on refrigerant. The manufacturer specifies a subcooling of 10°, but the system was at 1.5°. With customer authorization, I added 1 lb of R10A refrigerant, raising the subcooling to 10.7°. The system now has 73° return and 49° supply temperatures, and it is functioning properly.
Andrew H.
I conducted a comprehensive preventive maintenance check on the central air system. I began by inspecting the indoor evaporator coil and blower compartment, ensuring all components were free of debris. Electrical connections and safety features were checked, followed by measuring voltage and amperage. The air filter was examined for cleanliness. The condenser coil was rinsed, and the drain line was cleared to confirm proper drainage. The condensate pump was tested, and refrigerant levels were verified. The capacitor was inspected, and temperatures were taken. Thermostat operation was tested. Using a UV light, I identified UV dye on the evaporator coil end bends, indicating a potential leak. Photographs of the air handler were taken for a replacement evaporator coil.
Andrew H.
Upon arrival, the unit was off. The customer reported water leakage from the indoor unit. I inspected the drain pan and identified a leak in the p-trap of the drain line. I removed the male adapter, 90-degree elbow, p-trap, and coupling. The drain line was then blown out to remove any debris. New components—male adapter, 90-degree elbow, p-trap, coupling, and union—were installed. I poured water into the drain pan and checked for leaks in the drain line. No other leaks were found. The system was started and tested, achieving a 16° temperature split and 12.6° subcooling, both within manufacturer specifications.
Andrew H.
During the maintenance, I thoroughly inspected the indoor evaporator coil and blower compartment. All electrical connections and safety features were checked, including volts and amps. The air filter was visually inspected, rinsed with water, and the condenser coil was also rinsed. The drain line was cleared and tested for proper drainage. Refrigerant levels were checked, and the capacitor was examined. Temperatures were taken, and thermostat operation was tested. A mouse nest was discovered in the electrical compartment, with chewed low voltage wires. Damaged sections were removed and connections repaired. The unit was slightly low on refrigerant, and after authorization, 8 oz of R22 was added.
Larry H.
I conducted a comprehensive preventive maintenance service on the air conditioning system. I began by blowing out the drain line to ensure proper drainage and prevent clogs. The air filter was replaced with a new one provided by the customer. I then checked and tested the condensate pump to confirm it was functioning correctly. The condenser was thoroughly rinsed to remove any debris or buildup. I inspected and tested all electrical connections, pressures, and temperatures to ensure the system was operating within optimal parameters. The system is now running efficiently and effectively.
Larry H.
I conducted a comprehensive preventive maintenance service on the air conditioning system. I began by blowing out the drain line to ensure it was clear of any blockages. Next, I checked and replaced the air filter if necessary. I then inspected and tested the condensate pump to confirm it was functioning correctly. The condenser was rinsed to remove any accumulated dirt and debris. I meticulously checked all electrical connections for any signs of wear or damage. I also measured and recorded the system's pressures and temperatures to ensure they were within the optimal range. After completing these tasks, I verified that the system was operating efficiently and effectively.
Andrew H.
I conducted a comprehensive preventive maintenance service on the gas furnace. I began by brushing and vacuuming the burner tubes to ensure optimal airflow. Next, I inspected and vacuumed the burner, blower compartments, and the surrounding area to remove any dust or debris that could affect performance. I then checked all electrical connections and safety features to ensure everything was functioning correctly. I also verified the gas pressure and cleaned the flame sensor. A combustion test was performed, with inlet pressure at 9.467 in.w.c. and manifold pressure at 3.177 in.w.c. I replaced the air filter and humidifier pad using the customer-supplied parts. The oxygen level was 8.5%, and CO levels were 24 ppm. Unfortunately, I could not complete the A/C preventive maintenance due to rain, so I rescheduled the appointment for June 2nd, from 2-4 PM.
Andrew H.
I thoroughly inspected the indoor evaporator coil and blower compartment, ensuring all electrical connections and safety features were intact. I checked voltage and amperage, examined the air filter, and rinsed the condenser coil. The drain line was blown out and tested for proper drainage. Refrigerant levels were verified, and the capacitor was assessed, revealing it was below the manufacturer's recommended minimum. After obtaining customer approval, I replaced the weak capacitor, restoring the unit to optimal performance.
Andrew H.
Upon arrival, the unit was off. I turned it on and noticed the compressor was running, but the fan motor did not start. I checked the capacitor and found both the compressor and fan motor legs within specifications. Manually spinning the fan motor revealed a dead spot, causing intermittent operation. After obtaining customer authorization, I replaced the faulty fan motor and capacitor. I started and tested the unit, confirming proper operation. I recommend scheduling an A/C maintenance check to ensure the entire system is in good condition.
Larry H.
Upon inspection, I identified that the condenser system was not functioning due to a tripped breaker. Further examination revealed that the compressor was shorted to ground. After checking the fan motor, it was confirmed that the compressor needed replacement. Fortunately, the compressor is still under warranty, ensuring a seamless replacement process. The system is now operational, and the condenser is running efficiently.
Larry H.
I conducted a comprehensive preventive maintenance service on an oil boiler. The maintenance included thorough brushing and vacuuming of the unit. I replaced the oil filter, nozzle, and strainer to ensure optimal performance. After starting the boiler, I checked all safety mechanisms to confirm they were functioning correctly. A combustion test was performed, yielding results of 7.2% oxygen, 23 ppm, 0 smoke, and 82.2% efficiency, indicating the system was operating properly. Upon arrival, I noticed a small amount of water in a bucket for the pressure relief valve tube. Further inspection revealed that the expansion tank was beginning to fail, with water migrating to the air side. This condition prevents proper water expansion when heated. I recommended replacing the expansion tank. I drained the boiler, isolated the components, removed the faulty tank, installed a new one, refilled, and purged the system.
Andrew H.
I thoroughly inspected the indoor evaporator coil and blower compartment, ensuring all electrical connections and safety features were intact. I measured voltage and current levels, examined the air filter, and rinsed the condenser coil. The drain line was cleared, and a water test confirmed proper drainage. The condensate pump was tested, and refrigerant levels were checked. The capacitor was inspected, and temperatures were recorded. The thermostat operation was tested. Despite rinsing, significant dirt buildup was found on the condenser coil. After obtaining authorization, I performed a chemical clean to restore efficiency.
Andrew H.
I began by extracting usable oil from the old tank and transferring it into barrels. Next, I removed the old oil tank and installed a new Roth 275-gallon oil tank, complete with a WIFI tank gauge and fresh piping. After ensuring the new tank was securely in place, I pumped the previously collected oil back into the new tank. I then installed a new Wireless thermostat in the upstairs hallway, and disabled the thermostat located above the garage. Finally, I started and thoroughly tested the entire system to confirm its proper functionality.
Larry H.
4.9% O2, 15 ppm CO, and 84.2% efficiency. The system is functioning correctly. I flushed and drained several gallons from the hot water heater, cleaned the sight glass, and flushed the low water cut-off. The bathroom air vent operated correctly, allowing steam to heat the radiator. I rinsed the condenser coil, checked electrical connections, and blew out drain lines. All heads delivered 115-120 degrees in high heat and 51-53 degrees in high cool. The blower wheel for the living room unit is heavily soiled and requires chemical cleaning.
Andrew H.
During the maintenance, we began by visually inspecting the indoor evaporator coil and blower compartment, ensuring all components were in good condition. We checked all electrical connections and safety features inside the unit. The air filter was also visually inspected and found to be in acceptable condition. We rinsed the condenser coil and blew out the drain line, pouring water to confirm proper drainage. Additionally, we tested the condensate pump to ensure it was functioning correctly. However, we encountered issues when we discovered that the electrical compartment was positioned too close to the deck, making one screw inaccessible. Consequently, we were unable to complete the remaining maintenance tasks. We took photographs to provide a quote for relocating the unit away from the deck. Furthermore, we found the electrical disconnect box lying on the ground instead of being properly mounted. The romex wire leading from the house to the disconnect box was not rated for outdoor u
