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
Our Reviews by City
Excellent Service
KD - Durham, CT 06422
Larry is excellent.
Excellent Service
Tom - Durham, CT 06422
Larry Halpin was on-time, knowledgeable, skillful, and gave a thorough summary of the service and status of my furnace before he left. Thumbs up, well done!
Response from X-Treme Temp Heating & Cooling, LLC:
Thank you for sharing your kind words with us. It means the world to us and to our entire team!
Andrew H.
The hot water coil on the customer’s boiler is leaking. Currently here is no active leak but there is sediment buildup showing there was a leak in the past. Took pictures of the boiler model and serial as well as the water coil and surrounding piping. Will email an estimate to replace the gasket for the coil and an estimate to replace the water coil and the gasket.
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 8.5%o2 25ppm co 0 smoke Noticed higher than normal levels of sludge. Recommend getting oil sludge additive. Also found high levels of corrosion around the domestic water coil. Boiler is from 2000. Recommend replacing the boiler in the near future. Customer stated they heard air in the 2nd floor zone. Bled 2nd floor zone until all air was out. Started and tested the heat. Had hot water coming back to the return. When leaving boiler pressure was
Andrew H.
Drained boiler and zones of all water. Cut and removed the boiler, zone valves, flue pipe, and nearby piping. Installed new Weil McLain boiler, 3 circulator pumps, flue pipe, and zone panel. Reconnected the intake air kit and oil line. Filled system with water. Purged all zones. Started and tested the system.
Larry H.
Shut water off and replaced the mixing valve. Turned the water back on and checked for leaks. Checked the temperature at the sinks. There was 111*F at the sinks but very little pressure going through the tankless coil. Recommend having the coil flushed.
Larry H.
Customer turned the system. Checked the condenser, both the condenser fan and compressor were running. The compressor was drawing 13.7 amps and rated for 19.2 amps. Checked the pressures. 41/255 psi. The suction temp was 77*. Checked the evap coil. 1/2 - 3/4 of the coil was frosting over. There is a freeze protection clipped to the suction line outside of the air handler. With the difference in pressures and coil frosting, it indicates that there is a restriction. The system is R22, recommend replacing the system vs replacing the evap coil.
Andrew H.
Upon arrival unit was off. Turned unit on and the indoor unit and the compressor started but the condenser fan did not. Checked the capacitor and found the fan side was open internally and was not sending power to the fan to start it. After getting customer authorization we replaced the capacitor. Started the unit and found the unit was low on refrigerant. After getting customer authorization we added 1 lb R410A to the system bringing the subcooling from 3 up to 14. Went over the evap coil and condenser coil with a UV light and found UV dye in the drain pan of the evap coil meaning the evap coil is leaking. Recommend replacing the unit. The evap coil is from 2002 and the condenser is from 2017. While testing the condenser we checked the amp levels to check the compressor’s condition. The compressor was pulling 8.2 amps out of a max of 12.8 which is very high for a unit that is 7 years old.
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. 86% efficient System is operating properly. Performed an A/C pm on (2) systems. Checked the air filters. Customer replaces them. Blew out the drain line and tested the condensate pump for the first floor. Washed the condenser coils. Checked the electrical connections, pressures and temperatures. Added 10 oz R-410a to the 1st fl system and 7 oz R-410a to the 2nd floor system. Checked the fittings at the condenser, to make sure they are tight. All the joints are soldered instead of brazed. System is operating properly.
Andrew H.
deposit for scheduled repair on fri march 22, 2024 Drained system. Removed and replaced the Low Water Cut Off. Filled and purged all zones. Cut out leaking fittings and replaced with new pipe and fittings on the indirect water heater. Filled and purged. Installed support for supply manifold. Cut and removed the oil tank and piping. Filled holes and concreted. Performed a heating pm on the boiler. Brushed and vacuumed the boiler and flue pipe. Replaced the oil filter, nozzle and strainer. Checked the electrical connections and safety’s. Started and performed a combustion test. 5.1%o2, 20 ppm. 83% efficient. System is operating properly.
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. 6.7% o2, 0ppm, 0 smoke, 85% efficient 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, 2 ppm, 0 smoke, 82.8% efficient System is operating properly. The circulator gaskets have corrosion on them from a previous leak. Recommend replacing them. Also the pipe on the boiler for the hi-vent is corroded from a previous leak. Recommend replacing the pipes before they start leaking.
Andrew H.
Upon arrival unit was at 20 psi and the pressure relief was dripping. This indicates the diaphragm of the pressure relief was going bad and allowing water to leak by. Drained pressure from the system and replaced the pressure relief. When the system was empty we found that the pressure gauge was stuck at 19 psi. After getting customer authorization we replaced the temp/pressure gauge. Filled system back up with water and bled all 3 zones. Started and tested the boiler. Had hot water coming back on all 3 zones. Unit is working properly. Unit was at 20ppm when leaving
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
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
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
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.
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.
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.
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
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.
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.
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.
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.
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.
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.
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.
