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

Oil hydronic boiler maintenance call. Performed oil burner tuneup on Beckett NX burner. Changed oil, nozzle and oil filter. Cleaned and adjusted oil burner electrodes. Performed hydronic boiler tuneup on Buderus.

Oil hydronic boiler maintenance call. Performed oil burner tuneup on Beckett NX burner. Changed oil, nozzle and oil filter. Cleaned and adjusted oil burner electrodes. Performed hydronic boiler tuneup on Buderus.

Carl  M.

Carl M. Job Checkin

Oil hydronic boiler maintenance call.Performed Beckett oil burner maintenance, and tuneup on Buderus.

 Oil hydronic boiler maintenance call.Performed Beckett oil burner maintenance, and tuneup on Buderus.

Carl  M.

Carl M. Job Checkin

Natural gas furnace maintenance call. Perform natural gas tuneup on Lennox furnace.

Natural gas furnace maintenance call. Perform natural gas tuneup on Lennox furnace.

Carl  M.

Carl M. Job Checkin

Furnace maintenance call. Performed gas furnace tune-up on Heil.

Furnace maintenance call. Performed gas furnace tune-up on Heil.

Carl  M.

Carl M. Job Checkin

Oil furnace maintenance call. Performed oil furnace tune-up on Armstrong Air.

Oil furnace maintenance call. Performed oil furnace tune-up on Armstrong Air.

Carl  M.

Carl M. Job Checkin

Oil hydronic boiler service call. Provided proposal for replacement as heat exchanger is leaking water on Burnham.

Oil hydronic boiler service call. Provided proposal for replacement as heat exchanger is leaking water on Burnham.

Carl  M.

Carl M. Job Checkin

Heat pump installation call. Performed heat pump install on Bryant.

Heat pump installation call. Performed heat pump install on Bryant.

Carl  M.

Carl M. Job Checkin

Heat Pump maintenance call. Performed heat pump tune up on Trane.

Heat Pump maintenance call. Performed heat pump tune up on Trane.

Carl  M.

Carl M. Job Checkin

Heating maintenance call. Performed natural gas furnace heating tune up on Lennox. Tune-up included Aprilaire 700 humidifier service. Water panel for humidifier was replaced and humidifier set up for winter operation.

Heating maintenance call. Performed natural gas furnace heating tune up on Lennox. Tune-up included Aprilaire 700 humidifier service. Water panel for humidifier was replaced and humidifier set up for winter operation.

Carl  M.

Carl M. Job Checkin

Water heater service call. Performed the following repairs on a Bradford White electric water heater. Replaced pressure temperature safety relief valve. Re-piped temperature pressure safety valve to auxiliary pan with CPVC pipe. Installed water heater expansion tank. Bleed water heater free of air after restoring water pressure. Checked for any water, leaks and found none.

Water heater service call. Performed the following repairs on a Bradford White electric water heater. Replaced pressure temperature safety relief valve. Re-piped temperature pressure safety valve to auxiliary pan with CPVC pipe. Installed water heater expansion tank. Bleed water heater free of air after restoring water pressure. Checked for any water, leaks and found none.

Carl  M.

Carl M. Job Checkin

Heat Pump maintenance call. Performed tune-up on Lennox heat pump.

Heat Pump maintenance call. Performed tune-up on Lennox heat pump.

Carl  M.

Carl M. Job Checkin

Oil Steam Boiler service call. Found heat exchanger cracked and broken on Burnham Oil Steam Boiler.

Oil Steam Boiler service call. Found heat exchanger cracked and broken on Burnham Oil Steam Boiler.

Carl  M.

Carl M. Job Checkin

Oil water boiler maintenance call. Replaced oil nozzle and oil filter. Adjusted oil electrodes. Cleaned boiler heat exchanger. Cleaned combustion air chamber. Tested water pressure and temperature. Test draft. Test smoke. Combustion test. Weil-McLain boiler is heating well.

Oil water boiler maintenance call. Replaced oil nozzle and oil filter. Adjusted oil electrodes. Cleaned boiler heat exchanger. Cleaned combustion air chamber. Tested water pressure and temperature. Test draft. Test smoke. Combustion test. Weil-McLain boiler is heating well.

Carl  M.

Carl M. Job Checkin

Air conditioning service call. Performed repair on Lennox equipment that was not cooling. Fuses in the outside service disconnect were blown. Hard Start Capacitor was blown which caused fuses to blow. Repaired system by removing hard start capacitor and replacing fuses. System is now cooling.

Air conditioning service call. Performed repair on Lennox equipment that was not cooling. Fuses in the outside service disconnect were blown. Hard Start Capacitor was blown which caused fuses to blow. Repaired system by removing hard start capacitor and replacing fuses. System is now cooling.

Carl  M.

Carl M. Job Checkin

Air Conditioner and Furnace replacement call. Changed out furnace and air conditioner on Rheem.

Air Conditioner and Furnace replacement call. Changed out furnace and air conditioner on Rheem.