Reliable Heating and Cooling Services in Middleburg, VA
In Middleburg, VA, the seasons can be unpredictable, making it crucial to have a dependable HVAC system in your home. At CW Mossor Heating & Cooling, we specialize in expert heating and cooling services, ensuring your comfort no matter the weather. Whether you need fast air conditioning repairs or a new furnace installation, we’ve got you covered. Plus, all of our work is backed by our satisfaction guarantee. For service you can count on, give us a call at 540-277-9920 , or contact us online today!
Air Conditioning Repair and Replacement
When the summer heat hits Middleburg, a broken air conditioner can quickly turn your home into an uncomfortable place. Our expert technicians are ready to provide fast and efficient air conditioning repair services. If your unit is outdated or beyond repair, we also offer air conditioning replacement with energy-efficient models to help lower your cooling costs and improve indoor comfort.
Whether you live near the Middleburg Historic District, known for its charming shops and historic homes, or farther afield, we’ve got your cooling needs covered.
Furnace Repair and Replacement
When the temperature drops in Middleburg, a reliable furnace is key to staying warm and cozy. Whether your gas or oil furnace is making strange noises, struggling to heat your home evenly, or won’t start at all, CW Mossor Heating & Cooling is here to provide professional furnace repair. If your system is old or no longer efficient, we also offer furnace replacement to keep your home comfortable during the coldest months.
Heat Pump Repair and Replacement
Heat pumps are an excellent solution for efficient year-round heating and cooling in Middleburg, but they require regular maintenance and occasional repairs to keep running smoothly. If your heat pump isn’t heating or cooling as it should, we offer expert heat pump repair. If it’s time for a replacement, our heat pump replacement services will ensure your home remains comfortable through every season.
Boiler Repair and Replacement
Boilers are trusted for providing consistent heat and hot water, but when they malfunction, it can leave your home in the cold. Our team offers boiler repair services to get your system back in working order. If your boiler is outdated or inefficient, we can recommend a new model with our boiler replacement services, ensuring your home stays warm without breaking the bank.
Duct Cleaning and Indoor Air Quality Solutions
Over time, dust, debris, and allergens can build up in your air ducts, impacting your home’s air quality. Our professional duct cleaning services help remove these contaminants, improving airflow and making your home’s air healthier. We also offer advanced air filtration systems to further enhance your indoor air quality, making it a safer, cleaner environment for your family.
Why Choose CW Mossor for HVAC Services in Middleburg?
CW Mossor Heating & Cooling is proud to serve homeowners in Middleburg with top-quality HVAC services. Our experienced team understands the unique needs of local homes and is committed to providing reliable, affordable solutions. Plus, we offer flexible financing options to make HVAC repairs and replacements more manageable. Trust us to keep your home comfortable, no matter the season.
Schedule Your Service Today
Need help with your HVAC system? From air conditioning repairs to furnace replacements, CW Mossor Heating & Cooling is here to provide professional service with guaranteed results. Contact us at 540-277-9920 , or contact us online to schedule your HVAC service in Middleburg, VA.
Recent Jobs and Reviews
Job Locations and Reviews


New air conditioner installed with R454B refrigerant on Rheem equipment.


Gas furnace heating service call. Performed gas furnace repair on Heil.

I repaired a heat pump that was cycling on and off. I checked the electrical connections, cleaned the coils, and adjusted the thermostat. The heat pump is now working properly.
Came the same day that I had my issue and followed up until the job was done very professional, clean and courteous
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.


Gas furnace maintenance call. Performed tuneup on gas furnace and zoning system. Replaced thermostat downstairs hallway. System serviced is Carrier.


Gas boiler service call. Replaced safety relief valve and zone control on Weil-McLain.


Heat Pump / AC Service Call. Performed heat pump / air conditioning repair on Rheem. Heat pump had electrical short.


Heat Pump/Air Conditioning maintenance call. Performed tune-up on American Standard.
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.
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.


Heat Pump Service Call. No Heat because of electrical short in system.


Dehumidifier service call. Clean Comfort dehumidifier isn’t dehumidifying the home.


Heat Pump / Air Conditioning Service Call. Variable Speed Blower Motor had seized up. Replaced Heat Pump/ AC blower motor on Rheem.


Hydronic Boiler maintenance call on Burnham. Performed tune up on fuel oil water boiler.


Heat Pump / air conditioning maintenance call. Performed heat pump / air conditioning tune up on Lennox.


Boiler service call. Found air in the hydronic system. Bleed air free of water boiler on Weil-McLain


Heat Pump / Air Conditioning maintenance call. Performed heat pump / AC tune up on Amana.


High Efficiency gas furnace service call. Replaced pressure switch for flue gas draft on Heil high efficiency natural gas furnace.


Gas furnace maintenance call. Performed Propane furnace tune up on Heil.


Gas furnace service call. Found gas valve not allowing gas to flow to the burners. Electrical wiring to gas valve wasn’t making good contact.


Gas furnace maintenance call. Performed gas furnace tune up on Goodman.


Gas furnace maintenance call. Performed gas furnace tune up on Rheem.


Gas Furnace maintenance call.Evaluated natural gas furnace and found heat exchanger compromised. Inspected chimney and found no chimney liner of any type with gaps in bricks.

Installing a new 14 seer air conditioner
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
Thank you. We are happy to bring you peace of mind and certainly would be glad to serve you in the future.
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
Thank you. It's always a pleasure to assist in making your life more enjoyable and comfortable.
We received great service from Carl on our furnace today! We are ready for what the winter will bring.
"Thank you for your kind words, Matthew! We're glad we could provide you with great service.
Excellent service and responds to service calls quickly
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
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.
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.
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!
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.
Wonderful job ! Fast same day service !
Carl was able to get to our house on short notice on a weeknight when we sprang a radiator leak just before Thanksgiving with a houseful if guests on the way! Looked like a disaster looming but he got the problem stopped quickly and gave us an accurate estimate of the time it would take to get the radiator replaced. He always showed up on the date and time he promised. He was very clear in his communications via text messaging. All in all he did a first- class job! Will definitely call on him again in the future for our furnace & radiator care.
Carl was quick to respond to our request, he offered a fair comparable price to other companies and he was able to point out some installation issues for a new unit that other service techs had not noticed prior to beginning installation.
Carl is extremely professional, knowledgeable, courteous, organized, prompt, great communication, easy to work with, and was able to resolve any issues I had as well as answer any questions I had. I had many quotes but chose to go with Carl and his company to perform my HVAC work and highly recommend him and will definitely go to him with any other HVAC questions, concerns, or other work.
Carl is fantastic and my go to HVAC guy! Highly recommend!!