116 W. Piccadilly St. STE 3
Winchester, VA 22601
540-868-0110

Have any feedback for us? We'd love to hear it! Call us at (540) 456-9993 and let us know how we are doing.


Local Reviews

Rated 5.0 out of 5 stars based on 48 customer reviews

Amazing service

Carl was very helpful and understanding. He was able to fix our AC problem the same day.

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Excellent service

Very professional and thorough

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Excellent service! Highly recommend!

HVAC replacement install. Carl was prompt, courteous and constantly kept me in the know of what was going on. Some issues arose with the install but Carl worked through them with patience. The install took longer than planned, but Carl worked diligently. I will use him in the future for servicing this unit as well as my other unit. Carl is meticulous and detailed in his work. He does not cut corners and does the job required. Pricing is very fair. His quote included a few other things other installers did not even consider and his price was even a little lower than other installers for similar equipment.


Response from CW Mossor Heating and Cooling:

Thank you. I am very happy that you are pleased with the work and hope to continue providing excellent service in the future as well.

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Great Service Provider

It’s been 3 years since I started using Carl’s service, and I’ve never been disappointed. Honest, hard working, and a true professional. You receive an arrival time, and it’s not a 4 hour window. If he says 10am, you can trust he will be there. Thank you

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Excellent Heating AC service

Came the same day that I had my issue and followed up until the job was done very professional, clean and courteous


Response from CW Mossor Heating and Cooling:

Thank you for your kind words, Pam! We're glad we could help you with your issue and that you were satisfied with our service. We appreciate your business and look forward to serving you again in the future.

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Good customer service

Heater went down during a snow storm. Carl came out next day and diagnosed the issue and was able to fix it same day. I felt the price was very fair also. Would call again.


Response from CW Mossor Heating and Cooling:

Thank you for your kind words, Travis. We appreciate your business and are glad we were able to get your heat pump fixed quickly and efficiently.

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Furnace service and repairs

Mr Mossor was here on time as promised he was very good in checking my system out and finding two issues that needed immediate attention. He got the parts and fixed them in a short period of time and his prices we very reasonable and I would use him again


Response from CW Mossor Heating and Cooling:

Thank you. We are happy to bring you peace of mind and certainly would be glad to serve you in the future.

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Great work and service

Always helpful always on time fair pricing and always willing to help to do some extra things like changing a filter that I can’t reach. I always recommend Carl to other friends


Response from CW Mossor Heating and Cooling:

Thank you. It's always a pleasure to assist in making your life more enjoyable and comfortable.

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Excellent service

We received great service from Carl on our furnace today! We are ready for what the winter will bring.


Response from CW Mossor Heating and Cooling:

"Thank you for your kind words, Matthew! We're glad we could provide you with great service.

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Home owner

Excellent service and responds to service calls quickly


Response from CW Mossor Heating and Cooling:

Diane, thank you for your 5-star review! We appreciate your feedback and are committed to providing excellent service to all of our customers. We will continue to respond to service calls quickly and efficiently. Sincerely, Carl Mossor

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Excellent Service

Mr. Mossor always informed me of what he was doing each day he came to my house to replace my upstairs furnace and AC unit. Was on time everyday and took great care while working in my home. I could not have contracted with a better person.

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Excellent Service

Very customer friendly, did a great job on the repairs. Didn’t take long to get everything up and running properly. Would recommend using them. I would definitely call for any issues.

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Excellent Service

CW Mossor's contract price is reasonable and he scheduled a service/inspection appointment without delay. His invoice and report were thorough and professional. We hope to continue using Carl's company for years to come. Thank you!

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Excellent service!

I appreciate Carl's promptness, attention to detail, and explanations of service recommendations. I've never felt pressured from an "upsell" that I've encountered from some other HVAC companies.

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Wonderful job ! Fast same day service !

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Job Locations

Carl  M.

Carl M. Job Checkin

Propane furnace installation call. Performed propane furnace install / replacement on Rheem.

Propane furnace installation call. Performed propane furnace install / replacement on Rheem.

Carl  M.

Carl M. Job Checkin

Oil furnace maintenance call. Performed oil, furnace and oil burner tuneup on Beckett oil burner and Lennox oil furnace.

Oil furnace maintenance call. Performed oil, furnace and oil burner tuneup on Beckett oil burner and Lennox oil furnace.

Carl  M.

Carl M. Job Checkin

Gas furnace no heat call. Performed gas furnace repair on RUUD. A basic maintenance cleaning feature was initiated.

Gas furnace no heat call. Performed gas furnace repair on RUUD. A basic maintenance cleaning feature was initiated.

Carl  M.

Carl M. Job Checkin

Residential Steam oil boiler service call. Found Burnham steam boiler not working and Riello oil burner not firing off. Cleaned oil burner electrodes. Replaced oil burner nozzle and oil filter cartridge. Tune up oil burner and inspected heat exchanger. Inspected flue and chimney. Oil burner is fixed and heating water into steam. Performed draft and smoke test. Performed combustion analysis.

Residential Steam oil boiler service call. Found Burnham steam boiler not working and Riello oil burner not firing off. Cleaned oil burner electrodes. Replaced oil burner nozzle and oil filter cartridge. Tune up oil burner and inspected heat exchanger. Inspected flue and chimney. Oil burner is fixed and heating water into steam. Performed draft and smoke test. Performed combustion analysis.

Carl  M.

Carl M. Job Checkin

Natural gas furnace service call. Performed natural gas furnace repair on Lennox.

Natural gas furnace service call. Performed natural gas furnace repair on Lennox.

Carl  M.

Carl M. Job Checkin

Oil boiler replacement proposal to replace old oil hydronic American standard boiler in Stephens City, Virginia.


Carl  M.

Carl M. Job Checkin

Gas boiler propane service call. Performed diagnostics on Buderus propane boiler.

Gas boiler propane service call. Performed diagnostics on Buderus propane boiler.

Carl  M.

Carl M. Job Checkin

No Heat Service Call. Performed heat repair on Lennox natural gas furnace .

No Heat Service Call. Performed heat repair on Lennox natural gas furnace .

Carl  M.

Carl M. Job Checkin

Best oil boiler service call. Performed best oil boiler cleaning and repair on Weil-McLain boiler and Beckett oil burner. Replaced outdated oil burner. Replaced flue piping and barometric draft damper. Cleaned heat exchanger. Performed smoke test. Performed draft test. Performed combustion analysis.

Best oil boiler service call. Performed best oil boiler cleaning and repair on Weil-McLain boiler and Beckett oil burner. Replaced outdated oil burner. Replaced flue piping and barometric draft damper. Cleaned heat exchanger. Performed smoke test. Performed draft test. Performed combustion analysis.

Carl  M.

Carl M. Job Checkin

Mini-split otherwise known as a ductless system service call on LG.

Mini-split otherwise known as a ductless system service call on LG.

Carl  M.

Carl M. Job Checkin

Heat pump service call. Perform heat pump repair on RUUD.

Heat pump service call. Perform heat pump repair on RUUD.

Carl  M.

Carl M. Job Checkin

Oil furnace heating service call. Found high voltage wiring shorting out at the furnace. Replace wiring and secured. Regal oil furnace with Beckett oil burner.

Oil furnace heating service call. Found high voltage wiring shorting out at the furnace. Replace wiring and secured. Regal oil furnace with Beckett oil burner.

Carl  M.

Carl M. Job Checkin

Propane, furnace maintenance call. Performed propane, furnace tuneup on Trane.

Propane, furnace maintenance call. Performed propane, furnace tuneup on Trane.

Carl  M.

Carl M. Job Checkin

Propane furnace replacement call. Performed LP otherwise known as propane gas furnace replacement/install on Bryant.

Propane furnace replacement call. Performed LP otherwise known as propane gas furnace replacement/install on Bryant.

Carl  M.

Carl M. Job Checkin

Gas fired hydronic boiler service call. Performed gas boiler leak repair on hydronic system in the city Winchester on Weil- McLean.

Gas fired hydronic boiler service call. Performed gas boiler leak repair on hydronic system in the city Winchester on Weil- McLean.