Expert Heating and Cooling Services in Boyce, VA

In the quiet town of Boyce, VA, homeowners need HVAC systems they can rely on year-round. Whether you’re enjoying the town’s peaceful surroundings or prepping for changing weather, CW Mossor Heating & Cooling is your trusted partner for all heating and cooling services. From air conditioning repairs to furnace replacements and more, we ensure your home stays comfortable in every season. If you need quick, reliable service, contact us at 540-277-9920 , or get in touch online today!

Air Conditioning Repair and Replacement in Boyce

Summers in Boyce can be hot and humid, and a well-functioning air conditioner is essential for keeping your home cool. If your air conditioning system is malfunctioning, we offer fast, reliable air conditioning repair to get your system back in shape. If you’re considering an upgrade, our air conditioning replacement services will provide you with a new, energy-efficient unit that helps reduce your energy bills while keeping your home cool and comfortable.

Furnace Repair and Replacement

When the temperatures dip in Boyce, having a working furnace is key to maintaining warmth and comfort. Our experienced team provides furnace repair services to fix issues like uneven heating, strange noises, or non-functioning units. If your system is outdated or no longer efficient, we offer furnace replacement options that will ensure reliable heating throughout the colder months.

Whether you live near Burwell-Morgan Mill or farther afield, we’ll help ensure your home is ready for winter.

Heat Pump Repair and Replacement

Heat pumps offer efficient heating and cooling for homes in Boyce, but they sometimes require maintenance to perform at their best. If your heat pump isn’t heating or cooling effectively, we provide quick and effective heat pump repair services. For older systems, our heat pump replacement solutions will help you upgrade to a newer, more efficient model to keep your home comfortable year-round.

Boiler Repair and Replacement

Boilers are known for their reliable heat, but when they break down, it can cause major discomfort. Our boiler repair services are designed to quickly address leaks, inconsistent heat, or system malfunctions. If your boiler is outdated or no longer functioning efficiently, we offer boiler replacement to improve heating performance and reduce energy costs.

Duct Cleaning and Indoor Air Quality Solutions

Air quality plays a vital role in home comfort. Over time, your ducts can collect dust, allergens, and other contaminants that reduce the quality of the air in your home. Our duct cleaning services remove these pollutants, ensuring cleaner air and better HVAC efficiency. Additionally, we offer air filtration systems to enhance your home’s air quality, perfect for households with allergies or respiratory issues.

Why Boyce Homeowners Choose CW Mossor

CW Mossor Heating & Cooling has earned the trust of homeowners in Boyce, VA, through our reliable service and expert HVAC solutions. We know the unique needs of this community, whether you’re in town or near Burwell-Morgan Mill, and we’re committed to keeping your home comfortable all year long. Plus, we offer flexible financing options to make HVAC repairs and upgrades easier on your budget.

For professional, dependable heating and cooling services in Boyce, VA, give us a call at 540-277-9920 , or contact us online today!

Recent Jobs and Reviews

Rated 5.0 out of 5 stars based on 50 customer reviews

At a glance

CW Mossor Heating and Cooling has completed 25 jobs between September 2026 and October 2026.

The 15 customer reviews shown here average 5.0 out of 5.

The most recent job was on October 16, 2026.

Recent work covers Stephens City, VA, Winchester, VA, Middleburg, VA, Middletown, VA and Hume, VA.

Job Locations and Reviews

Winchester, VA - I conducted a comprehensive maintenance inspection and tune-up on an Ait-temp heat pump. This involved checking the outdoor unit's coils, inspecting the thermostat settings, and ensuring the system's electrical connections were secure. I also tested the system's airflow, replaced the indoor air filter. Additionally, I verified the refrigerant levels and ensured the system was operating efficiently. The heat pump is now in optimal condition, ready for peak performance.
Carl M.
Carl M. Checked in
I conducted a comprehensive maintenance inspection and tune-up on an Ait-temp heat pump. This involved checking the outdoor unit's coils, inspecting the thermostat settings, and ensuring the system's electrical connections were secure. I also tested the system's airflow, replaced the indoor air filter. Additionally, I verified the refrigerant levels and ensured the system was operating efficiently. The heat pump is now in optimal condition, ready for peak performance.
Winchester, VA 22602
Winchester, VA - I conducted a comprehensive maintenance inspection on a Bryant heat pump system. The inspection began with a thorough visual examination of the outdoor unit, ensuring all components were free from debris and damage. I checked the refrigerant levels and inspected the condenser and evaporator coils for any signs of wear or blockage. The system's electrical connections were tested for proper functionality, and I verified that the thermostat was operating correctly. I also cleaned the air filters and checked the blower motor for any unusual noises or signs of wear. Finally, I performed a performance test to ensure the heat pump was efficiently heating the space. The system was found to be in excellent condition, and I provided the homeowner with tips for continued maintenance.
Carl M.
Carl M. Checked in
I conducted a comprehensive maintenance inspection on a Bryant heat pump system. The inspection began with a thorough visual examination of the outdoor unit, ensuring all components were free from debris and damage. I checked the refrigerant levels and inspected the condenser and evaporator coils for any signs of wear or blockage. The system's electrical connections were tested for proper functionality, and I verified that the thermostat was operating correctly. I also cleaned the air filters and checked the blower motor for any unusual noises or signs of wear. Finally, I performed a performance test to ensure the heat pump was efficiently heating the space. The system was found to be in excellent condition, and I provided the homeowner with tips for continued maintenance.
Winchester, VA 22602
Winchester, VA - Oil, furnace and oil burner maintenance call. I performed an oil burner tuneup on a Beckett oil burner and a Rheem oil furnace. Replace the oil nozzles and oil filter cartridge. I cleaned the electrodes and adjusted them for proper burning ignition. I cleaned the Combustion air chamber as well as the adjustment wheels. Inspected the blower assembly. Fired off furnace and check the Combustion analysis to verify everything was working in specs.
Carl M.
Carl M. Checked in
Oil, furnace and oil burner maintenance call. I performed an oil burner tuneup on a Beckett oil burner and a Rheem oil furnace. Replace the oil nozzles and oil filter cartridge. I cleaned the electrodes and adjusted them for proper burning ignition. I cleaned the Combustion air chamber as well as the adjustment wheels. Inspected the blower assembly. Fired off furnace and check the Combustion analysis to verify everything was working in specs.
Winchester, VA 22601
Stephens City, VA - Heating maintenance call. Performed natural gas tuneup on Bryant / Carrier. Completed humidifier maintenance on Aprilaire 700 and replaced water panel / pad.
Carl M.
Carl M. Checked in
Heating maintenance call. Performed natural gas tuneup on Bryant / Carrier. Completed humidifier maintenance on Aprilaire 700 and replaced water panel / pad.
Stephens City, VA 22655
Winchester, VA - I performed a detailed heating maintenance service on a high-efficiency natural gas boiler. I inspected and cleaned the burners and heat exchanger, adjusted the air-to-fuel ratio, and calibrated control settings for precise temperature regulation. The flue system was thoroughly checked for blockages or damage. Operational tests confirmed the boiler's correct and efficient function. A comprehensive report detailing the maintenance and future care recommendations was provided to the customer.
Carl M.
Carl M. Checked in
I performed a detailed heating maintenance service on a high-efficiency natural gas boiler. I inspected and cleaned the burners and heat exchanger, adjusted the air-to-fuel ratio, and calibrated control settings for precise temperature regulation. The flue system was thoroughly checked for blockages or damage. Operational tests confirmed the boiler's correct and efficient function. A comprehensive report detailing the maintenance and future care recommendations was provided to the customer.
Winchester, VA 22601
Middletown, VA - Propane service call. House propane pressure was too low. Adjusted exterior LP regulator to provide proper gas pressure to the home.
Carl M.
Carl M. Checked in
Propane service call. House propane pressure was too low. Adjusted exterior LP regulator to provide proper gas pressure to the home.
Middletown, VA 22645
Woodstock, VA - I conducted a comprehensive oil boiler maintenance service on a Burnham and Beckett oil burner. This included a thorough tune-up, replacement of the oil nozzle, and cleaning of the electrodes with adjustments. The burner assembly was meticulously cleaned, and the oil filter was replaced. A smoke test was performed to ensure proper operation. Additionally, I adjusted the combustion air and flue draft damper, and completed a combustion analysis to optimize performance and efficiency.
Carl M.
Carl M. Checked in
I conducted a comprehensive oil boiler maintenance service on a Burnham and Beckett oil burner. This included a thorough tune-up, replacement of the oil nozzle, and cleaning of the electrodes with adjustments. The burner assembly was meticulously cleaned, and the oil filter was replaced. A smoke test was performed to ensure proper operation. Additionally, I adjusted the combustion air and flue draft damper, and completed a combustion analysis to optimize performance and efficiency.
Woodstock, VA 22664
Lake Frederick, VA - Heating maintenance call. Performed natural gas tuneup on Goodman equipment. Chemically clean the blower wheel and tested system operation.
Carl M.
Carl M. Checked in
Heating maintenance call. Performed natural gas tuneup on Goodman equipment. Chemically clean the blower wheel and tested system operation.
Lake Frederick, VA 22630
Linden, VA - Air-conditioning maintenance call. Performed AC tuneup on Rheem for WAIW radio tower station, a Nexstar Media Group.
Carl M.
Carl M. Checked in
Air-conditioning maintenance call. Performed AC tuneup on Rheem for WAIW radio tower station, a Nexstar Media Group.
Linden, VA 22642
Stephens City, VA - I performed a detailed natural gas furnace maintenance on a Rheem unit. Starting with a meticulous inspection, I examined the burners, heat exchanger, and airflow systems. Filters were replaced , electrical connections checked, and all components verified for proper function. The thermostat was calibrated, and safety controls tested. After ensuring everything was in order, I restarted the furnace to confirm it operated efficiently, ensuring optimal heating performance and extending the appliance's lifespan.
Carl M.
Carl M. Checked in
I performed a detailed natural gas furnace maintenance on a Rheem unit. Starting with a meticulous inspection, I examined the burners, heat exchanger, and airflow systems. Filters were replaced , electrical connections checked, and all components verified for proper function. The thermostat was calibrated, and safety controls tested. After ensuring everything was in order, I restarted the furnace to confirm it operated efficiently, ensuring optimal heating performance and extending the appliance's lifespan.
Stephens City, VA 22655
Middleburg, VA - Humidifier installation call. Installed Aprilaire Power Humidifier with automatic control on Goodman equipment.
Carl M.
Carl M. Checked in
Humidifier installation call. Installed Aprilaire Power Humidifier with automatic control on Goodman equipment.
Middleburg, VA 20117
Leesburg, VA - Heating maintenance call on Rheem. Performed heating tuneup on natural gas furnace.
Carl M.
Carl M. Checked in
Heating maintenance call on Rheem. Performed heating tuneup on natural gas furnace.
Leesburg, VA 20176
White Post, VA - Heating maintenance call. Performed heating tuneup on Lennox natural gas furnace.
Carl M.
Carl M. Checked in
Heating maintenance call. Performed heating tuneup on Lennox natural gas furnace.
White Post, VA 22663
Lake Frederick, VA - Gas Furnace Maintenance Call. Performed heating maintenance inspection on Goodman natural gas furnace and Aprilaire 700 humidifier. Replaced humidifier water panel.
Carl M.
Carl M. Checked in
Gas Furnace Maintenance Call. Performed heating maintenance inspection on Goodman natural gas furnace and Aprilaire 700 humidifier. Replaced humidifier water panel.
Lake Frederick, VA 22630
Middleburg, VA - Furnace repair call. Replaced heat exchanger that had acid holes in in it on Carrier.
Carl M.
Carl M. Checked in
Furnace repair call. Replaced heat exchanger that had acid holes in in it on Carrier.
Middleburg, VA 20117
Hume, VA - Air conditioning service call. Found condensation piping obstructed. Cleaned pipe. Removed dirty air filter that caused additional problems on Carrier.
Carl M.
Carl M. Checked in
Air conditioning service call. Found condensation piping obstructed. Cleaned pipe. Removed dirty air filter that caused additional problems on Carrier.
Hume, VA 22639
Stephens City, VA - Heating maintenance call. Perform natural gas furnace tuneup on Goodman.
Carl M.
Carl M. Checked in
Heating maintenance call. Perform natural gas furnace tuneup on Goodman.
Stephens City, VA 22655
Carl M.
Carl M. Checked in
Gas furnace maintenance call. Perform heating tuneup on a propane, Goodman furnace.
Middleburg, VA 20117
Middleburg, VA - Heat pump maintenance inspection call. Performed heat pump tuneup on Carrier.
Carl M.
Carl M. Checked in
Heat pump maintenance inspection call. Performed heat pump tuneup on Carrier.
Middleburg, VA 20117
Stephenson, VA - Gas furnace maintenance inspection. Performed  natural gas furnace maintenance on Lennox.
Carl M.
Carl M. Checked in
Gas furnace maintenance inspection. Performed natural gas furnace maintenance on Lennox.
Stephenson, VA 22656
Stephenson, VA - Heat pump maintenance call. Performed heat pump maintenance inspection on Lennox equipment. Replace thermostat with corroded batteries.
Carl M.
Carl M. Checked in
Heat pump maintenance call. Performed heat pump maintenance inspection on Lennox equipment. Replace thermostat with corroded batteries.
Stephenson, VA 22656
Warrenton, VA - Air conditioning service call. Found thermostat with no display. Replaced existing Braeburn thermostat with a new Honeywell Home thermostat which corrected issue and now home is cooling with Rheem equipment.
Carl M.
Carl M. Checked in
Air conditioning service call. Found thermostat with no display. Replaced existing Braeburn thermostat with a new Honeywell Home thermostat which corrected issue and now home is cooling with Rheem equipment.
Warrenton, VA 20187
Whitacre, VA - Air conditioning service call. Found low pressure switch had failed although refrigerant pressures were adequate and static position. Repaired refrigerant pressure switch on Carrier.
Carl M.
Carl M. Checked in
Air conditioning service call. Found low pressure switch had failed although refrigerant pressures were adequate and static position. Repaired refrigerant pressure switch on Carrier.
Whitacre, VA 22625
Winchester, VA - Air conditioning service call. Found compressor exploded at the wiring harness connection on Carrier.
Carl M.
Carl M. Checked in
Air conditioning service call. Found compressor exploded at the wiring harness connection on Carrier.
Winchester, VA 22603
Shenandoah Farms, VA - Air conditioning service call. Found improper solder / brazed refrigerant joint that was leaking refrigerant from the previous installation company on Daikin.
Carl M.
Carl M. Checked in
Air conditioning service call. Found improper solder / brazed refrigerant joint that was leaking refrigerant from the previous installation company on Daikin.
Shenandoah Farms, VA 22642
Review
Carl was here within about 20 minutes of the initial call This was 100° day and my air-conditioning was completely out Carl had everything back up and running very quickly You’re not going to find better service or technician than Carl Mosher and sons
John - Stephens City, VA 22655
Response from CW Mossor Heating and Cooling:

Thank you for the wonderful feedback about Carl's quick response and excellent service on such a hot day, we truly appreciate you taking the time to share your experience with us.

Review
Excellent service
Audrey - Hume, VA 22639
Response from CW Mossor Heating and Cooling:

Thank you.

Review
Carl was very helpful and understanding. He was able to fix our AC problem the same day.
Pablo - Winchester, VA 22601
Review
Very professional and thorough
Angie - Front Royal, VA 22630
Review
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.
Al - Middletown, VA 22645
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.

Review
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
Bill - White Post, VA 22663
Review
Came the same day that I had my issue and followed up until the job was done very professional, clean and courteous
Pam - Strasburg, VA 22657
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.

Review
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.
Travis - Winchester, VA 22603
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.

Review
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
Charlie - Stephens City, VA 22655
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.

Review
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
John - Stephens City, VA 22655
Response from CW Mossor Heating and Cooling:

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

Review
We received great service from Carl on our furnace today! We are ready for what the winter will bring.
Matthew - Middletown, VA 22645
Response from CW Mossor Heating and Cooling:

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

Review
Excellent service and responds to service calls quickly
Diane - Stephens City, VA 22655
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

Review
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.
Charles - Stephens City, VA 22655
Review
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.
Charlotte - Middletown, VA 22645
Review
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!
Spencer - Stephens City, VA 22655
" state="[sa-state]" includegooglereviews="yes" reviewcount="25" checkincount="25" zoomlevel="11" fblike="yes" mapscrollwheel="yes" reviewcityurl=""]

Schedule Service Online
servicedetailscustomerreturningschedule
Details Regarding Your Request...
Optional: Drag and drop photos and/or videos:
Max. file size: 4 MB.
Your Contact and Service Location...
*
*
To Serve You Best...
Have we served you in the past?
Yes
No
What Is Convenient For You?
What time of day is best for you?
First Available
Morning
Afternoon

Call For Same Day Service/Emergencies at 540-277-9920 .

Opt-in
By checking this box, you agree to receive text messages about Customer Care & Marketing from CW Mossor LLC You may reply STOP to opt out at any time. Reply HELP for assistance. Message and data rates may apply. Message frequency will vary. This is our terms and privacy policy
Back Next