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Heating Cooling Services Durham CT

Keep Your Home Comfortable With Quality HVAC Services In Durham CT

X-Treme Temp Heating & Cooling is your go-to HVAC service provider in Durham, 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 Durham, 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 Durham, CT



Andrew H.

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 4.2%o2 45ppm co 0 smoke

Near Evergreen Terrace, Durham, CT 06422
Andrew H.

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 6.6%o2 50 ppm co 0 smoke While performing the maintenance we found high levels of sludge at the oil filter and the nozzle. Recommend getting a sludge additive

Near Skeet Club Rd, Durham, CT 06422
Andrew H.

Andrew H.

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 Water heater -8.1%o2 37ppm co 0 smoke Boiler-5.7%o2 26ppm co 0 smoke

Near James Rd E, Durham, CT 06422
Larry H.

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. The pressure relief valve has a slow drip. Found the extrol tank is going bad and water has leaked past the diaphragm into the air side of the tank. Recommend replacing both the extrol tank and the pressure relief valve. There is some corrosion around the domestic coil gasket from a previous leak. Recommend replacing the gasket. Isolated the boiler and drained the pressure from the system. Replaced the extrol tank and pressure relief valve. Filled and checked for leaks. Opened the valves and started the system.

Near Brittany Dr, Durham, CT 06422
Larry H.

Larry H.

Checked thermostats upstairs. Switched 2 of them temporarily to test. After removing the ones that did not work for approximately a minute, they powered down and rebooted. The thermostats started working. Turned them on individually to check the damper operation. Did the same for the thermostat downstairs that did not work. Currently all 6 thermostats are operating properly. The zone system is a Trane Intergrated system which is older.

Near E Woods Trail, Durham, CT 06422
Larry H.

Larry H.

Performed a heating pm on an oil furnace. Brushed and vacuumed. Replaced oil filter, nozzle, and strainer. Checked electrical connections and safety. Performed a combustion test. System is operating properly. The basement is a finished basement with the furnace in a mechanical room. There is not enough combustion air in the room. Recommend either leaving the door to the room open or bringing in combustion air from outside.

Near Cesca Ln, Durham, CT 06422
Andrew H.

Andrew H.

Upon arrival unit was off. Checked evap coil and saw a small buildup of ice. Took hot water and sprayed the coil until all ice was melted. Turned unit on and found the system was low on refrigerant. After getting customer authorization we chemically cleaned the condenser coil due to a high buildup of dirt and debris simulate higher pressures than the system actually had. Added 2 lbs 6 oz R410A to the system to bring the subcooling up to 13 from 1. Also added uv dye to the system. Pressures went from 75/270 to 130/366. Unit is working properly

Near Brittany Dr, Durham, CT 06422
Larry H.

Larry H.

Performed heating p.m. on oil furnace. Brushed and vacuumed. Replaced oil filter, nozzle, and strainer. Washed air filter. Started furnace, the furnace did not start and was not off on reset. Checked primary control. The relay was pulled in but not sending power to the burner. Touched the reset button and it started. Cycled power and the same thing happened. The control is bad. Replaced the primary control. Started and checked the operation. System is operating properly.

Near Patterson Ln, Durham, CT 06422
Dyllan  M.

Dyllan M.

Upon arrival I found the unit had no power. Found no breakers were tripped or off. The upstairs breaker was on. I only had 120 coming in but coming out. It’s a breaker. Customer needs to call an electrician. Switch is off at the unit. Customer would like the invoice mailed.

Near Higganum Rd, Durham, CT 06422
Dyllan  M.

Dyllan M.

Performed a heating maintenance. Oil boiler. Changed the nozzle filter and strainer. Adjusted electrodes. Purged the oil line. Cleaned the heat exchanger and flue pipe. Recemented the flue pipe. Started and tested. Combustion test was 4ppm at 4.5%o2. No smoke on the smoke test.

Near Olde Yankee Way, Durham, CT 06422
Larry H.

Larry H.

When arrived, the burner was off on reset. Reset burner it did start. Checked the oil flow and transformer. The transformer was weak. also removed the nozzle assembly and the nozzle and electrodes were dirty. Recommended replacing transformer and nozzle. Replaced transformer and nozzle, cleaned the nozzle assembly and adjusted electrodes. Started and tested several times. The furnace starts properly.

Near Patterson Ln, Durham, CT 06422
Andrew H.

Andrew H.

Brushed and vacuumed flu pipe and heat exchanger Replaced oil filter, nozzle, and strainer Checked all electrical connections and safeties Preformed combustion and smoke tests Upon arrival found the hi-vent over the boiler was dripping and appeared to have been leaking for some time. Was able to stop the hi-vent from leaking temporarily but when testing the boiler when the boiler temp was high the Extrol tank started leaking from the diaphragm seam. Had to drain system and replace the hi-vent and the Extrol tank. After replacing both we bled the air out of the system. Started and tested the boiler. The unit is operating properly.

Near Camera Rd, Durham, CT 06422
Jonathan L.

Jonathan L.

Brushed and vacuumed soot and debris from heat exchanger and flue pipe. Replaced the nozzle, filter, and strainer. Checked electrical connections and safeties. Performed a combustion test on unit, unit is Running at 7.4% O2, 23ppm CO, with zero smoke.

Near Brittany Dr, Durham, CT 06422
Jonathan L.

Jonathan L.

Upon arrival unit was turned off. Turned unit on and tried to start unit, unit started putting white smoke and did not fully light. Inspected all electrical components on the burner, all components are functioning properly. Inspected heat exchanger and found the unit to be plugged solid with soot. Recommended an emergency cleaning for 350 and the homeowner approved of the work. Brushed and vacuumed soot and debris from heat exchanger and flue pipe. Replaced the nozzle, filter, and strainer. Performed a combustion test on unit. After adjusting the burner the unit is running at 6.7% 02, 45ppm CO, with zero smoke. After unit reached operating temperature noticed the pressure was at 40 psi, recommend replacing expansion tank as well as the pressure relief valve. Estimate for work will be sent to homeowners email.

Near Wagon Wheel Rd, Durham, CT 06422
Dyllan  M.

Dyllan M.

Performed a heating pm. Changed the nozzle filter and strainer. Bled the oil line. Vacuumed soot out of the heat exchanger and the flue pipe. Started and tested. Performed a combustion test. 18ppm. No smoke. System is running good. Added 5 gallons of glycol. Tested the glycol. The levels are good. No leaks found. Turned on each zone and made sure there was no air in the lines. Boiler pressure is 19psi. The downstairs air handler had no trap on the condensate line which was causing the air handler to leak. Installed a trap and tested. Found no other leaks. Customer is only paying for the pvc repair.

Near Patterson Ln, Durham, CT 06422
Andrew H.

Andrew H.

Cleaned blower assembly on ductless unit so it would have proper airflow. Tested unit and it is now working properly

Near New Haven Rd, Durham, CT 06422
Andrew H.

Andrew H.

Upon inspection found the blower shell is plugged and not allowing the blower to effectively push air. Had 45 degree supply air indicating unit is properly charged. 290 plus tax quoted price for blower cleaning Will return Thursday at 8:30 Preformed quote for central air install.

Near New Haven Rd, Durham, CT 06422
Dyllan  M.

Dyllan M.

Upon arrival I found the condenser was running. When I took the service door off I found the condenser turned off. I found the low voltage wires had been chewed apart. Fix the wiring, started and tested. Found the system was low on refrigerant. Added 2lbs of r22. I had a 23*f delta t. The customer had found a relay in the furnace was getting hot to the touch and had me replace the relay. Started and tested. No issues found. Customer denied uv dye.

Near Hellgate Rd, Durham, CT 06422
Andrew H.

Andrew H.

Upon arrival found the zone valve for the main loop was leaking by when another zone was calling. Replaced motor and the leak decreased but was still leaking by. Drained pressure from system and removed old ball valve and zone valve. Replaced with new zone valve and new ball valve. Bled air from entire system and started unit. Tested the new zone valve to ensure proper operation. Watched boiler temp satisfy and had hot water coming back. Unit is functioning properly

Near Mauro Dr, Durham, CT 06422
Andrew H.

Andrew H.

Replaced electrodes on nozzle assembly and replaced oil filter and nozzle. Bled oil line and adjusted air setting on burner. Preformed combustion and smoke tests. Running at 9.4% o2 100 ppm co 0smoke

Near Skeet Club Rd, Durham, CT 06422
cooling@x-tremetemp.com

cooling@x-tremetemp.com

Apon arrival both units were working properly but the water heater was clicking indicating that the anodes are on the way out. Took pictures of the model and serial number to replace them.

Near James Rd E, Durham, CT 06422
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