340 Quinnipiac Street / Building 33
Wallingford, CT 06942
203-815-6851

Local Reviews

Rated 5.0 out of 5 stars based on 539 customer reviews

Great service

Quick, knowledgeable and went over options with me.

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Excellent work

Efficient always polite and respectful. Excellent service.

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Fast scheduling

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Outstanding and Professional Service!

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.

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Excellent Service

Larry is friendly and professional. I have confidence that the job was done right.

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Excellent service

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Excellent Service

Larry was familiar with past services on our furnace, and quickly evaluated the need for a new valve control on our furnace to prevent overheating in one zone. He and his helper did annual maintenance on the furnace. They will be back to change a couple of parts once they are received.

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Excellent Service

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Excellent Service!

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!

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Excellent service

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Excellent

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Excellent Service!

Always a pleasure with the tech!

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Excellent

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.

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Excellent Service

Always receive excellent service. Office staff is always helpful and courteous.

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Excellent Service!

Andrew fixed an ongoing problem we had with extreme hot water for years!

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Job Locations

Larry H.

Larry H. Job Checkin

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. 6.9% o2, 17 ppm, 82.5% efficient System is operating properly.


Andrew H.

Andrew H. Job Checkin

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 While performing the maintenance we found a small amount of moisture inside the furnace and flue pipe. Would recommend having a chimney person come and inspect the chimney and chimney cap. Greg’s chimney 203 630 1976


Larry H.

Larry H. Job Checkin

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.

Andrew H. Job Checkin

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 0 ppm co 0 smoke While performing the maintenance we found high levels of sludge at the oil filter canister. After getting customer authorization we added sludge additive to the oil tank. Also saw the water heater is from 2013. Would recommend replacing it as soon as possible. Electric water heaters typically have a warranty of 8 years and recommend replacing them at least every 10 years. Noticed some corrosion and wet spots on the top of the water heater. 40 gallon electric water heater 1/2 water line


Andrew H.

Andrew H. Job Checkin

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 6.2%o2 0 ppm co 0 smoke While performing the maintenance we found the burner coupling was starting to become stripped. Replaced burner coupling. Unit is working properly.


Andrew H.

Andrew H. Job Checkin

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 0 ppm co 0 smoke


Larry H.

Larry H. Job Checkin

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. 7.3% o2, 24 ppm, 86.5% efficient System is operating properly. The fittings on the domestic water coil have some corrosion on them. Recommend replacing the fittings.


Larry H.

Larry H. Job Checkin

Valved system off and drained some water from the boiler. Removed and installed a new circulator pump with a flow check in it and installed a new top for the Hi-vent. Filled and purged. Started and checked the operation.


Andrew H.

Andrew H. Job Checkin

Upon arrival unit was off. Turned unit on and it was off on reset. Pushed the reset button and the unit started but was rumbling. Checked oil flow and had good clean flow. Checked the ignition transformer and it had a good strong spark. Checked the nozzle and found it had been dripping and was spraying at an incorrect pattern. Found some oil residue in the blast tube and small amount of carbon buildup. Cleaned the blast tube of all oil and carbon buildup. Replaced the old nozzle with a new nozzle. Started the unit up and performed combustion and smoke tests. Unit is working properly.


Larry H.

Larry H. Job Checkin

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. 7.3% o2, 27 ppm, 85.4% efficient System is operating properly.


Andrew H.

Andrew H. Job Checkin

Upon arrival unit was off on reset. When opening the burner compartment we found the firomatic oil handle had gone bad and was cutting off oil supply to the burner. Grabbed a new handle from the van and showed customer the issue. Installed the new handle and started and tested the furnace. Unit is working properly.


Larry H.

Larry H. Job Checkin

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. 4.2% o2, 41 ppm, 85.3% efficient System is operating properly.


Larry H.

Larry H. Job Checkin

Performed a heating pm on an oil furnace and oil hot water heater. Brushed and vacuumed. Replaced the oil filter, nozzles and strainers. Started and checked the safeties. Performed a combustion test. System is operating properly.


Andrew H.

Andrew H. Job Checkin

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 While performing the maintenance we found 3 hi-vents that have been leaking in the past and have sediment buildup on them. Would recommend replacing the 3 hi-vents in the future.


Larry H.

Larry H. Job Checkin

Performed a heating pm on an oil furnace Brushed and vacuumed. Replaced the oil filter, nozzle and strainer. Replaced the air filter, customer supplied. Started and checked the safeties. Performed a combustion test. 5.2% o2, 28ppm, 87.5% efficient System is operating properly.