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
Our Reviews by City
Great job!
Jane - Wallingford, CT 06492
Excellent Service
Sue - Wallingford, CT 06492
Andrew is a very knowledgeable person and is very professional when he comes to our home to service our heating and cooling systems.
Great service at a reasonable price
Ron - Wallingford, CT 06492
Fantastic service at a reasonable cost. The tec. Reviewed everything he did I was very satisfied and highly recommend Extreme to my family and friends.
Always accommodating
Dorene - Wallingford, CT 06492
We love the whole crew! Highly recommended
Truly fantastic
deann - Wallingford, CT 06492
Service was quick and efficient. He also took the time to show me a couple of area to watch out for.
Excellent Service
Brian - Wallingford, CT 06492
Technician- Larry did an excellent job. He explained what was completed and next steps to keep my heating system running effectively. Highly recommend
Wonderful help!
Amelia - Wallingford, CT 06492
Timely, efficient, and kind. We appreciate the service and the care!
HVAC PROFESSIONAL
Allyson - Wallingford, CT 06492
Andrew has come to my house a number of times now to service my air-conditioning and heating units. He’s the most lovely young man. Professional, knowledgeable, the service was done in about 45 minutes and I always have peace of mind after he leaves knowing I’m going to be fine for the winter. He explains anything that’s wrong, that I need to do or any issues I may anticipate. Thank you Larry and Andrew Halpin and Jerry who also came and assisted.
Fast scheduling
brian - Wallingford, CT 06492
Outstanding and Professional Service!
Tracy - Wallingford, CT 06492
Another great experience. Always displays a customer first attitude. Friendly, informative and makes recommendations as needed. Tells it like it is, what service you need and when it should be scheduled. We use Xtreme for multiple services and they have never let us down. Outstanding job! Highly recommend.
Excellent service
Colleen - Wallingford, CT 06492
Excellent Service
Bob - Wallingford, CT 06492
Excellent Service!
Doll - Wallingford, CT 06492
We have been using X-treme Temp Heating and Cooling since purchasing our home in 2019. They have never failed to provide prompt, friendly service. Working with them is the closest you can get to having “family in the business” as they do, indeed, treat you like family. Would highly recommend!
Excellent
Robert - Wallingford, CT 06492
Excellent Service!
Lagase - Wallingford, CT 06492
Always a pleasure with the tech!
Excellent
Lisa - Wallingford, CT 06492
Andrew seems so knowledgeable in everything he has done for me and explains everything. He is also very kind and seems to take pleasure in making things easier for me.I am very comfortable placing my trust in your company to do the right thing by me. It’s been a very difficult couple of years since Gary died and as you know I have had to take on everything myself. I am getting educated in many things thanks to you. Keep doing what you are doing.
Excellent Service
Rachel - Wallingford, CT 06492
Always receive excellent service. Office staff is always helpful and courteous.
Excellent Service!
susan - Wallingford, CT 06492
Andrew fixed an ongoing problem we had with extreme hot water for years!
Excellent!
Sue - Wallingford, CT 06492
Our second year with you and we will continue to use your services!
Boiler Maintenance
JohnG - Wallingford, CT 06492
Larry and his son Andrew provided outstanding service! Prompt and communicative! Xtreme is our go to service provider!
Fast and Excellent Service Repair!
Stephanie - Wallingford, CT 06492
Andrew and his colleague were here on time and completed the repair within 30 minutes!
Another great Service!
Jeff - Wallingford, CT 06492
Andrew has serviced our heating unit the past two years and has been great. Very good service and I hope he is back to our house next year.
Excellent service and a good price.
Helen - Wallingford, CT 06492
Larry is very knowledgeable and very professional. He is a credit to your company.
Excellent service!
Kirsten - Wallingford, CT 06492
Larry was very nice. He was even kind to my dogs. Thank you.
Excellent service, highly recommend!
susan - Wallingford, CT 06492
Andrew was here to clean our furnace today, and as always did a fantastic job. He found a few minor things that needed replacing and showed me the parts. Also, after 30 years of boiling hot water, he said our mixing valve needed replacing, must of asked a dozen plumbers and furnace people over the years with no results. These people are the real deal, so happy we have them!
Andrew H.
Performed pm on gas furnace and gas space heater Brushed and vacuumed burner tubes Inspected and vacuumed burner, blower compartments and surrounding area Checked electrical connections and safeties Checked gas pressure Performed combustion test Furnace Inlet pressure-12.46 in.w.c. Manifold pressure-3.313 in.w.c. Unit heater Inlet pressure- 12.25 in.w.c. Manifold pressure- 3.385 in.w.c. While performing the maintenance we found the inlet gas pressures were higher than the manufacturer recommends. The max inlet pressure is supposed to be less than 12 in.w.c. Recommend having the gas company come out and adjust the gas meter pressure slightly.
Larry H.
Performed a heating pm on a gas furnace. Cleaned the flame sensor, checked the gas pressures 7.1”wc incoming, 1.5”wc low fire/ 3.0”wc hi fire. Replaced the air filter- customer supplied. Started and checked the safeties. Performed a combustion test. System is operating properly.
Jonathan L.
AC Repair: Arrived at the client’s home after they reported higher than normal energy bills and decreased cooling performance. Inspected the air conditioning system and found the condenser coil partially blocked and the refrigerant slightly low, causing the system to work harder than normal. Cleaned the condenser coil, checked all electrical connections, and topped off refrigerant to proper levels. Tested the system for correct operation, airflow, and temperature output. The system is now running efficiently, and cooling costs should return to normal.
Larry H.
Furnace Maintenance: Arrived at the client’s home to perform routine furnace maintenance. Inspected and cleaned the burner assembly, blower compartment, and heat exchanger, and replaced the air filter. Checked all electrical connections, safety switches, and the ignition system to ensure reliable operation. Verified proper airflow and tested the furnace through a full heating cycle. The system is now clean, working efficiently, and ready for dependable performance throughout the season.
Dyllan M.
Furnace Repair: Arrived at the client’s home after they reported the furnace was not heating the space. Performed a full diagnostic and found the system shutting down due to a failed ignition component. Replaced the faulty ignitor, reset the furnace, and verified proper ignition sequence and burner operation. Monitored the system through several heating cycles to ensure consistent performance. The furnace is now heating normally and operating safely for our valued client.
Andrew H.
Performed pm on oil furnace Brushed and vacuumed flue pipe and heat exchanger Replaced oil filter, nozzle, and strainer Checked all electrical connections and safeties Performed combustion and smoke tests 4.6%o2 0ppm co 0 smoke
Larry H.
Performed a heating preventative maintenance service on an oil boiler. Brushed and vacuumed. Replaced the oil filter, nozzle and strainer. Started and checked the safeties. Performed a combustion test. System is operating properly. There are 3 Hi-vents near the air scoop that have corrosion on them from a previous leak. Recommend replacing them.
Andrew H.
Upon arrival the unit was on but not running. Turned unit off and checked both oil filters. Found the first tank filter was dirty but the second tank filter was very dirty. Removed and replaced both oil filters. Disconnected the oil line at the burner and blew out the oil lines leading to both thanks. Bled the tank closest to the back wall with no issue. Found the second tank was having very little oil come out. Used a push/pull pump to clear a blockage from the second tank and had slime and sludge come into the filter canister. After removing some sludge and slime the tank had no issues with oil flow. Bled the filter canister for the second oil tank and then bled the oil lines. Started and tested the unit. Recommend adding sludge additive the the oil tanks to help clear any obstructions.
Larry H.
When arrived the thermostat was displaying 88 plus all other icons. The thermostat is bad. Replaced the thermostat with a Honeywell T4 programmable thermostat. Showed the customer how to use the features.
Larry H.
Burner was off on reset. Reset the control. There was air then the flow stopped. Found the tank valve was plugged. Blew out the tank valve and bled the line. Customer has moisture in the tank. When he changed the filter it was milky and brown. Replaced the strainer and nozzle. Started and bled the line until there was clean oil. Customer is adding an additive to the tank to help with the moisture and sludge. Recommend having the system serviced.
Andrew H.
Performed pm on oil boiler Brushed and vacuumed flue pipe and heat exchanger Replaced oil filter, nozzle, and strainer Checked all electrical connections and safeties Performed combustion and smoke tests 5.4%o2 0 ppm co 0 smoke Got customer authorization for the 2 hi-vents recommended for replacement at last visit. Drained pressure from the system. Removed 2 old hi-vents and installed 2 new hi-vents. Filled system up with water and purged air out of all zones. Started and tested all zones. Had hot water coming back at all returns. Boiler pressure when leaving was 21psi
Larry H.
Performed a heating pm on an oil furnace. Brushed and vacuumed. Replaced the oil filter, nozzle and strainer. Replaced the air filters. Started and checked the safeties. Performed a combustion test. 4.5% o2, 29 ppm, 88.1% efficient System is operating properly.
Andrew H.
Performed pm on oil water heater Brushed and vacuumed flue pipe and heat exchanger Replaced oil filter, nozzle, and strainer Checked all electrical connections and safeties Performed combustion and smoke tests 6.9%o2 0ppm co 0 smoke Duct diagnostics 203 734 1532
Larry H.
Performed a heating pm on an oil boiler. Brushed and vacuumed. Replaced the oil filter, nozzle and strainer. Started and checked the safeties. Performed a combustion test. System is operating properly.
Andrew H.
Performed pm on oil boiler Brushed and vacuumed flue pipe and heat exchanger Replaced oil filter, nozzle, and strainer Checked all electrical connections and safeties Performed combustion and smoke tests 4.8%o2 6ppm co 0 smoke While performing the maintenance we found high levels of sludge at the oil filter canister. After getting customer authorization we added a sludge additive to the oil tank. Also found 2 hi-vents had been leaking in the past and were showing signs of corrosion. After getting customer authorization we replaced the 2 hi-vent Drained pressure from the system. Removed 2 old hi-vents and installed 2 new hi-vents. Filled system back up with water and purged air out of all zones. Started and tested both zones. Had hot water coming back at the return. When leaving boiler pressure was at 20psi when leaving. Unit is working properly.
Larry H.
Turned the thermostat on, the air handler turned on but the condenser did not. The condenser was off on a hard lock out. Reset the board and the condenser started. Checked the pressures. The system was low on refrigerant. Added 3lb 4 oz R410 to the system, also the air filter was plugged. Washed the filter. The discharge temp is 90* in the kitchen. The system is operating properly. Recommend adding UV dye to the system to see where a leak may be.
Larry H.
Performed a heating pm on an oil furnace. Brushed and vacuumed. Replaced the oil filter, nozzle and strainer. Started and checked the safeties. Performed a combustion test. 11.1% o2, 23 ppm, 82.6% efficient System is operating properly. While performing the combustion test, the O2 increased from 10.5% to 11.1% when the blower turned on. When there is an increase, that is a sign that a crack is forming. We can monitor it at our next visit.
Andrew H.
Performed pm on oil boiler Brushed and vacuumed flue pipe and heat exchanger Replaced oil filter, nozzle, and strainer Checked all electrical connections and safeties Performed combustion and smoke tests O2 7.9% 0 ppm While performing the maintenance we found the corrosion on the side of the boiler has progressed farther. Also found a gasket on the side of the boiler has split and is letting extra oxygen into the combustion chamber. Patched the hole with furnace cement but recommend replacing the boiler as soon as possible before any issues arise. Took pictures and measurements for a replacement quote.
Andrew H.
Performed pm on oil boiler Brushed and vacuumed flue pipe and heat exchanger Replaced oil filter, nozzle, and strainer Checked all electrical connections and safeties Performed combustion and smoke tests 7.4%o2 0ppm co 0smoke
Larry H.
Recovered the refrigerant from the system. Removed and installed a new compressor inside the condenser. Pressure tested and evacuated the system. Added refrigerant into the system to 13* subcooling. System is operating properly. The compressor is under warranty.
Larry H.
Performed a heating pm on an oil boiler. Brushed and vacuumed. Replaced the oil filter, nozzle and strainer. Started and checked the safeties. Performed a combustion test. 9.2% o2, 23 ppm, 84.6% efficient System is operating properly. There is a slow drip on the bottom of a solder joint when the system cools off. Recommend replacing the fitting and the circulator gaskets on all 4 pumps.
Andrew H.
Performed heating pm on heat pump system Visually inspected indoor evap coil and blower compartment Checked all electrical connections and safeties Checked volts and amps Visually inspected air filter Checked refrigerant levels Checked capacitor Took temps
Andrew H.
Brushed and vacuumed flue pipe and heat exchanger Replaced oil filter, nozzle, and strainer Checked all electrical connections and safeties Performed combustion and smoke tests 7.2%o2 1ppm co 0 smoke While performing g the maintenance we found the burner coupling was starting to get stripped and was showing signs of wear. Brought the issue to the customer’s attention. After getting customer authorization we replaced the burner coupling. Unit is working properly.
Andrew H.
Performed pm on oil furnace Brushed and vacuumed flue pipe and heat exchanger Replaced oil filter, nozzle, and strainer Checked all electrical connections and safeties Performed combustion and smoke tests 4.0%o2 3ppm co 0 smoke
Andrew H.
Brushed and vacuumed burner tubes Inspected and vacuumed burner compartment and surrounding area Checked electrical connections and safeties Checked gas pressure Performed combustion test Inlet pressure- 7.083 in.w.c. Manifold pressure- 3.10 in.w.c. When arriving the customer said the 1st circ pump was not working properly and had no heat for that zone. After investigating we found the bearing for the pump was very stiff and the coupling had snapped. After getting customer authorization we replaced the coupling and added oil to all circ pumps. After replacing the coupling and adding oil we found the bearing is still slightly stiff. Would recommend replacing the circ pump before the bearing completely seizes. Checked the coupling for the last circ pump and found the set screws are very rusted and corroded making it impossible to replace the coupling. Would recommend replacing the pump before the coupling fails.
