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 Service
Pete - Wallingford, CT 06492
Being new to the area we didn’t know who to contact. Once we found Xtreme Temp we were happy with the timeliness in scheduling. Larry was a great resource to understand potential issues and remedies to take to avoid further issues. He was very knowledgeable and able to explain how our system worked. Great experience. Thanks Larry
very good
Frank - Wallingford, CT 06492
Excellent
Donna - Wallingford, CT 06492
Great service
peter - Wallingford, CT 06492
Andrew was on time, excellent service , great on clean up and any questions I had were addressed.
Excellent Sevice
Brian - Wallingford, CT 06492
Excellent service
Mersades - Wallingford, CT 06492
Excellent
Brian - Wallingford, CT 06492
Tech was very informative and forthright with my system issues Definitely would recommend
Excellent service!!
George - Wallingford, CT 06492
Woke up, 0 degrees and no heat. Service was prompt and I was up and running in no time. Great company to deal with
Excellent service as usual
Charlee - Wallingford, CT 06492
Andrew is the tech we’ve had the pleasure of dealing with in the short time we’ve used this company for maintenance on our AC and water heater. He’s always a pleasure and thoroughly explains what’s wrong or what things he did while here.
Great service
Donald - Wallingford, CT 06492
You have great great talented people who do a great service
Great Service
Stacey - Wallingford, CT 06492
Andrew was a top tier technician! Thank you!
Excellent Service Tech
Stacey - Wallingford, CT 06492
Andrew was patient, professional, and knowledgeable! Tech had to return for second day (our fault) and both experiences were great!! Andrew, thank you for a job well done! We appreciate you!
Excellent Service
Tracey - Wallingford, CT 06492
Andrew is always timely , professional knowledgeable and experienced ! He is very pleasant to speak with ! The whole staff inside and out are the best ! I would and will recommend Xtreme to anyone ! It’s extremely hard to find sincere, honest , accommodating experienced and genuine people ! Thank you all So much !
Great service
Lisa - Wallingford, CT 06492
Great service
Michael - Wallingford, CT 06492
Everything went well
Excellent service
Lia - Wallingford, CT 06492
Excellent service!
Jaime - Wallingford, CT 06492
Honest and friendly service! Would recommend to family and friends.
XTREME Brings the HEAT!
Joe - Wallingford, CT 06492
Andrew is a total professional, great guy, great tech.
Very professional and excellent service
Michael - Wallingford, CT 06492
Andrew was very efficient and professional. He solved the problem quickly and took time to explain things and field all my questions
Amazing service.
Shane - Wallingford, CT 06492
Great service. Explained everything he did and informed me of things I need to be aware of.
Excellent service
Lisa - Wallingford, CT 06492
Service was good!! Just waiting on a follow up to permanently fix my issue with the zone valve
James - Wallingford, CT 06492
Excellent service
John - Wallingford, CT 06492
Very pleased
Excellent Service!
Doll - Wallingford, CT 06492
We have had X-treme Heating and Cooling for five years. In that time they replaced our A/C and have provided service of both our heating and cooling systems. They are a family owned business that go above and beyond. They have treated us as if we are family and are honest, reliable, trustworthy and pleasant.
Response from X-Treme Temp Heating & Cooling, LLC:
We are so grateful for your 5-star review. Thanks for sharing your rating with us and the community.
As Always, Great Service!
Tracey - Wallingford, CT 06492

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 When arrived, the pressure in the boiler was down to 3-5 psi, which could cause the noise in the pipes. The valve going to the automatic water feed was off, turned the valve on and increased the pressure to 18 psi and the water pressure was still increasing. The automatic water feed is bad and needs to be replaced. There is a hi vent on the indirect water heater that has corrosion on it from leaking water. Recommend replacing the hi vents.

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

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 Inspected thermostat for the customer. Temperature variance was only 1.5 degrees which is acceptable. Thermostat is working properly

Larry H.
There was water under the return ductwork. Checked the humidifier and condensate pump. When the water was up to the point of the pump turning on, it was very slow pumping out. Blew out the drain line, it was not blocked. Checked the check valve. Tested the pump and it pump a little faster. When testing it again, it did not pump any water out. The condensate pump is bad.

Jonathan L.
A Goodman GMVC96 furnace in Wallingford was not providing adequate airflow. I diagnosed a failed ECM blower motor, causing the system to overheat and shut down. I replaced it with a new GE 5SME39 motor, adjusted fan speeds for optimal airflow, and tested the unit. The system is now running efficiently with proper air circulation.

Andrew H.
Removed the old 230 volt blower motor. Installed a new 230 volt blower motor and 7.5 capacitor. Started and tested the system for proper operation

Andrew H.
Upon arrival unit was off. Customer stated they tried cleaning the air filter earlier today when the furnace stopped working. Turned furnace on and turned the thermostat up. Found the furnace was blinking 4 times for a limit switch code. Turned power off to the unit to clear the code and checked the limit switch. We found the limit switch had continuity indicating it is still functioning properly and is not stuck open causing the code. Turned power back on to the system and the code cleared. Unit started up with no issue. Cycle the unit on and off multiple times with no issues. Could be an intermittent issue with the limit switch starting. Took pictures of the limit and the furnace model and serial number. If the issue happens again recommend replacing the limit switch. Would recommend having a maintenance done on the system

Larry H.
Checked the system. The noise was from the circulator, there was 0 psi on the boiler gauge. Added water to the boiler and the noise went away. Increased the pressure to 20 psi. Inspected the boiler, there is corrosion on the top of the boiler between sections 2 & 3. Inside the boiler there was a spot between sections 1 & 2 that has an area that is shiny from water. There is a little air in the system from when there was no pressure, the system can draw air in from any area that is compromised by a leak. The boiler needs to be replaced soon. The pressure will continue to decrease over time. Also gathered the information for replacement and an electric hot water heater.

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 6.2%o2 28 ppm co 0 smoke When arriving for the maintenance we found the boiler pressure was at 4 psi which is low. Last year we found the autofeed was leaking water into the boiler continuously and valved it off. Since the autofeed is valved off the boiler lost pressure through out the year. Opened the valve for the autofeed and brought system pressure back up to roughly 18. Had to close the valve for the autofeed again as it is still allowing water through when the system is up to pressure. We also found the pressure relief is still dripping water. Recommend replacing the autofeed and the pressure relief

Andrew H.
Drained pressure from the water coil. Cut out and removed old mixing valve. Installed new mixing valve and nearby piping. Removed old hi-vent and installed a new one. Filled system back up with water. Bled all zones of air. Started and tested the system and adjusted the mixing valve as needed. Had water temps around 120 consistently coming out of the mixing valve. Had hot water coming back for all 3 zones. When leaving boiler pressure was at 18psi

Larry H.
Ran a new condensate drain line from the condensate pump to the sewer line. Drilled and tapped a hole for a fitting. Started and tested the pump. Water flows properly.

Larry H.
Checked the water heater. The burner was not off on reset. Th aquastat control had power and there was a call for the burner. The aquastat was buzzing but was not sending power to the burner. The aquastat is bad and needs to be replaced. Replaced the aquastat. Started and tested

Larry H.
Turned the temp up and there was a buzz inside the air handler. The blower was not running. Found the capacitor was bad. Replaced the capacitor and the blower started properly. Checked the heating elements. 18.0/23.1 amps. Checked the pressures at the heat pump. The discharge temp with the heat pump was 97*F. The system is operating properly.

Andrew H.
Performed oil pm on furnace and water heater Brushed and vacuumed flue pipes and heat exchangers Replaced oil filter, nozzles, and strainers Checked all electrical connections and safeties Performed combustion and smoke tests Furnace-7.9%o2 22ppm co 0 smoke Water heater- 5.9%o2 40 ppm co 0 smoke Recommend having a chimney company come and clean the chimney. Soot buildup is at the same level as the flue pipe entrance for the furnace. Greg’s chimney 203 630 1976

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. System is operating properly

Dyllan M.
Today, I repaired a Carrier Infinity 96 furnace for a homeowner in Wallingford, CT. The unit was short cycling and not maintaining temperature. After diagnosing the issue, I found a faulty flame sensor and buildup on the burners. I cleaned the burners, replaced the flame sensor, and tested the system. The furnace is now running efficiently, providing consistent heat for the home.

Larry H.
Completed a duct cleaning for a home in Wallingford, CT. The homeowner was noticing excessive dust and musty odors. Upon inspection, I found heavy dust buildup and mold growth in certain areas of the duct system. Using a high-powered vacuum and antimicrobial treatment, I thoroughly cleaned and sanitized the ducts. The air quality in the home has already improved, and airflow is much better.

Larry H.
The boiler was up to temperature when arrived. Checked the zones. Several zones have Nest thermostat installed. There is only 2 wires going to the thermostats. Turned the temp up and checked each zone. The basement zone is an old thermostat which does not sit properly on the wall and did not turn the circulator on, jumped the wires and the zone started to heat. Several areas are radiant flooring found the firematic handle was partially closed due to the lead broke free and closed the valve. Replaced the handle. Checked the fuel flow and found a lot of air in the line. Bled until there was clean oil. Recommend installing a tiger loop due to the line goes overhead. The issue with the heat not working may be caused by the emergency switch plate was removed for painting and the switch is normally in the up position. Recommend having the system serviced and the customer would like to had a wireless tank gauge installed that was left by the previous owner.

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. System is operating properly

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. 5.2% o2, 0 ppm, 83.0% efficient Purged all zones. Tested and had hot water coming back to the boiler from all zones. System is operating properly The 80 gallon electric water heater is showing signs of leaking water. Recommend replacing soon.

Andrew H.
Disconnected gas piping, ductwork, and drain line from the old gas furnace. Removed old gas furnace and installed Trane S9X1, 100,000 BTU gas furnace. Installed new gas piping, new drain line, and new condensate pump. Modified supply and return ductwork. Started and tested the system and performed a combustion test.

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. 6.5% o2, 1 ppm, 0 smoke, 84.0% efficient System is operating properly

Larry H.
Customer turned the heat on and the burner started. The burner was loud when it was running. Checked the oil flow, there was a small amount of air. Removed the nozzle assembly and the top of the turbulator was wet and the bottom was dry indicating that the nozzle was spraying incorrectly. Replaced the nozzle and started. The burner was running correctly. Performed a combustion test, there reading were close to what they were at the time of the maintenance. The system is operating properly.

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 5.5%o2 39 ppm co 0 smoke While performing the maintenance we found some light corrosion on the exterior of the boiler. Also found heavy corrosion on the inside of the boiler. Recommend replacing the boiler in the near future before any issues arise. Because there is corrosion on the inside of the boiler if a constant leak were to form it would put the flame out inside the boiler and prevent it from working properly

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 Drained pressure from the system. Removed the circulator for the 2nd floor zone and replaced it with a new circulator. Removed 2 old hi-vents and installed 2 new hi-vents. Filled system back up with water. Purged air out of all 3 zones. Started and tested the system. Unit is working properly. Boiler pressure when leaving was 18 psi