Air Conditioning Services
Stay cool with expert repair, seasonal maintenance, and high-efficiency AC installations sized correctly for your home.
See Air Conditioning Services arrow_forwardBryant Factory Authorized Dealer · Since 2002
Complete Home Comfort Services Across Northern Virginia
Family-owned heating and air conditioning service built on trust. Our certified technicians keep your home comfortable in Lorton, Alexandria, Springfield, and surrounding areas.
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Bryant Authorized
Elite certification ensuring factory-standard installations and genuine parts for long-term reliability.
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NATE-Certified
Our technicians hold the industry's highest standard for HVAC technical excellence and expertise.
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Eco-Friendly
Precision engineering that reduces energy consumption and lowers your home's carbon footprint.
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100% Satisfaction
Backed by a family-owned legacy of trust. We don't finish until your comfort is perfectly restored.
20+
Years serving Northern Virginia
24/7
Emergency service availability
100%
Satisfaction commitment
NATE
Certified expert technicians
Precision Climate Systems
Expert engineering for every aspect of your home's thermal environment.
Heating & Furnace Services
Reliable warmth through furnace repair, heat pump technology, and 24/7 emergency heater service across Northern Virginia.
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Indoor Air Quality
Breathe easier with advanced air purification, duct cleaning, and humidity control systems tailored to your household.
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Hot Water Heaters
Energy-efficient water heating systems, including tankless installations and dependable traditional repairs.
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2002.
Family-owned and
serving NoVA ever since
serving NoVA ever since
Reliable HVAC from local professionals
A family-owned name your neighbors trust
Since 2002, Commonwealth Cooling & Heating has provided cooling and heating services across Northern Virginia. As a family-owned business, we focus on building lasting relationships through honest work, clear pricing, and guaranteed customer satisfaction — not high-pressure sales.
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Bryant Factory Authorized Dealer
We meet high industry standards for technical skill and service, so you get high-performance systems installed by trained professionals.
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NATE-Certified Technicians
Our team holds North American Technician Excellence certifications and trains regularly to service every make and model correctly the first time.
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Eco-Friendly Practices
Climate-neutral refrigerants, hybrid heating, paperless billing, recycled parts, and efficient routing to keep our local footprint low.
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100% Satisfaction Guarantee
We back every installation and repair with a complete satisfaction guarantee. If you are not happy with our work, we will make it right.
How we work
From first call to lasting comfort
A straightforward process built around your schedule and your home — no surprises, no jargon.
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Book your visit
Call (703) 436-8028 or schedule online. We confirm a time that works for you, including 24/7 emergency slots.
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On-site diagnosis
A NATE-certified technician inspects your system, measures what matters, and pinpoints the real cause of the problem.
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Honest options
You get clear, written options and upfront pricing — repair or replace — so you can decide with confidence.
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Comfort restored
We complete the work to manufacturer spec, clean up, and back it with our 100% satisfaction guarantee.
Voices of Comfort
Trusted by Your Neighbors
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"Commonwealth saved us during a heatwave. The technician was professional, explained everything clearly, and had our AC back up in under an hour. Best service in Lorton!"
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Daisha Grayson
Lorton, VA
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"As a Bryant dealer, they really know their equipment. The installation of our new furnace in Alexandria was flawless. Highly recommend their maintenance plan."
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Corie Ugalde
Alexandria, VA
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"Prompt, honest, and technically superior. Commonwealth has been our go-to for over 10 years. They treat you like family, not just a service call."
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Edward Windas
Springfield, VAFrequently Asked Questions
How often should I replace my HVAC air filter? expand_more
You should change your HVAC air filter every 30 to 90 days depending on your household. Homes with pets or residents with allergies benefit from changes every 30 days to maintain air quality.
What are the signs that my HVAC system needs repair? expand_more
Look for uneven temperatures, unusual noises, rising energy bills, or system cycles that turn on and off too frequently. Call a professional if your system blows warm air in the summer or cold air in the winter.
Why should I choose a Bryant Factory Authorized Dealer? expand_more
Bryant Factory Authorized Dealers meet rigorous standards for national certifications, technician training, and customer satisfaction. This ensures your systems are installed and serviced to manufacturer specifications.
Comfort Planning
How we design a system that fits the house
A replacement system should not be chosen from square footage alone. Commonwealth starts with a load calculation, then confirms duct pressure and equipment match before recommending a Bryant system or repair plan.
Manual J load check
We account for windows, insulation, attic heat, room layout, and Northern Virginia weather before sizing new equipment.
Airflow and duct pressure
Static pressure readings show whether return ducts, filters, or supply runs are restricting comfort and shortening equipment life.
Humidity control
Correct runtime and coil matching help remove summer moisture, protect finishes, and keep rooms from feeling damp.
Efficiency payback
We compare repair cost, utility savings, rebates, and financing so you can make a practical decision.
What happens during a home visit
Our technician checks the equipment, measures what matters, explains the cause of the problem, and gives you written options before work begins.
Checks we do before recommending replacement
- Measure temperature split, refrigerant behavior, and electrical draw.
- Inspect the air filter, blower wheel, evaporator coil, and drain line.
- Check duct leakage, return sizing, and room-to-room temperature differences.
- Confirm whether current equipment is under warranty or eligible for rebates.
Local, fast response
Proudly serving Southern Fairfax County & Northern Virginia
By focusing on our local communities, our technicians reach you fast — even on extreme-weather days when waiting hours for an out-of-area crew is not an option.
Home comfort resources
Advice from our technicians
Practical guides on efficiency, equipment choices, and keeping your system healthy through Northern Virginia's seasons.
Heating
Heat Pump vs. Gas Furnace for Fairfax County Winters
How the two systems compare on comfort, running cost, and efficiency — and which makes sense for your home.
Read article arrow_forward EfficiencyUnderstanding SEER2 Efficiency Standards for NoVA Homes
What the new SEER2 ratings mean for replacement systems, rebates, and your long-term energy bills.
Read article arrow_forward MaintenanceThe Technical Benefits of Preventative HVAC Maintenance
Why seasonal tune-ups and Energy Saver Agreements protect performance, warranty, and equipment life.
Read article arrow_forwardComfort you can count on
Ready to get your home comfortable again?
Talk to a NATE-certified technician today. Same-day diagnostics, honest written options, and 24/7 emergency support across Lorton, Alexandria, Springfield, and the surrounding area.