Prince William County

HVAC Services in Manassas, VA

Professional heating, cooling, and indoor air quality services for Manassas homeowners. Tell us about your property and the service you need.

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Your Trusted HVAC Contractor in Manassas

Manassas is one of the busiest areas we work, and it's a short drive up from our shop in Nokesville. Most of our calls here are air conditioner repairs, tune-ups and full system replacements. We fix gas furnaces and heat pumps too, and we swap out water heaters.

A Manassas address can put you under two different governments. Inside the City of Manassas, the city sells you electricity and issues its own building and trade permits. Outside the city line in 20109, 20110 and 20112, Prince William County handles permits. Across the four Manassas ZIPs, more than half the homes went up between 1970 and 1999. Heat splits close to even: about half gas and a little under half electric. So we see plenty of 30- and 40-year-old houses on their second or third system, with a heat pump or a gas furnace depending on the street.

Jim, Owner & Licensed HVAC Contractor

Manassas Neighborhoods We Serve

  • Georgetown South

    An 80-acre townhouse community in the city, started in 1964 by architect Marion Bagley as a lower-cost take on a Chevy Chase design. The city's housing plan calls it a dense neighborhood of townhomes. At 60-plus years old, most of these homes are well past their first HVAC system. When we replace one, we look hard at where the condenser can sit and how the refrigerant lines get there.

  • The Manassas Local Historic District

    The city's largest historic district covers about 2.5 square miles and more than 300 structures, including the traditional downtown and a ring of older neighborhoods around it. The Architectural Review Board has to approve exterior changes before the city issues the permit. If a new outdoor unit or vent will show from the street, plan for that review.

  • Tudor Hall

    The city describes Tudor Hall as modest homes, mostly one-story brick, on moderate lots. One level is the easiest house to keep even. When it isn't, leaky or undersized ducts are the first thing we check.

  • Sudley

    Sudley is county, not city, in 20109. The Census counts about 5,700 homes, and close to three in five were built in the 1970s and 1980s. Almost half are townhouses. A bit more than half heat with gas. Plenty of these homes have outlived their first furnace and AC and are now on replacements that are aging too.

  • South of the city in 20112

    Here it's mostly detached houses, more than nine in ten, and a big share went up in the 2000s. Heat leans electric. About 7 percent of homes burn propane and 3 percent use heating oil, which is more than anywhere else in the Manassas ZIPs. On propane or oil? Tell us when you call so we bring the right parts.

Manassas Covered ZIP Codes

20109 · 20110 · 20111 · 20112

Provide your full service address when requesting HVAC help.

HVAC Challenges in Manassas

  • Systems copied from the old label

    Most Manassas homes are 30 to 55 years old. Many have newer windows, added insulation or a finished basement since the first system went in. A replacement should be sized for the house as it stands today. Matching the tonnage on the old unit can leave you with short cycling and a clammy house.

  • Heat pumps in a cold snap

    Nearly half the homes here heat with electricity, and that usually means a heat pump with electric backup strips. On the coldest mornings the strips carry the load and the bill jumps. If yours runs the backup all winter, something's off: low refrigerant, a bad defrost control or a thermostat set up wrong.

  • Townhouse top floors

    About a quarter of homes across these ZIPs are townhouses. The top floor runs hot in July and the lower level stays cool. Balancing dampers, a second return or a zoning setup can fix a lot of that without a bigger system.

Full HVAC Services in Manassas

AC Repair AC Installation Heating Repair Heating Installation Furnace Services Heat Pump Services Water Heater Services HVAC Maintenance Indoor Air Quality Ductless Mini Splits Ductwork Services
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HVAC Estimates in Manassas

Every home in Manassas is different. Use our free instant estimate tool for a quick price range, or contact us for a detailed in-home assessment. We provide honest, upfront pricing with no hidden fees.

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Why Manassas Homeowners Choose a Local Contractor

  • City or county

    Check your tax bill. City of Manassas homes get permits from the city's Development Services office. The rest of 20109, 20110 and 20112 falls under Prince William County. The rules aren't identical, so give us your street address and we'll check which set applies.

  • City-owned electric

    Inside the city, your power comes from Manassas City Utilities, not Dominion or NOVEC. The city runs a Load Management Program. A switch on your central AC cycles the compressor off for 15 minutes out of every half hour during peak demand, which in summer usually runs about 4 to 6 p.m. If your AC seems to quit on hot afternoons, check for that switch before you assume it's broken.

  • Gas and rebates

    Columbia Gas of Virginia lists the City of Manassas in its service area. County addresses may be on Columbia Gas or Washington Gas, so look at your bill. Columbia's WarmWise program pays $300 to $500 toward a high-efficiency gas furnace while funding lasts. The federal 25C credit only covered work finished by the end of 2025, and Virginia's Home Energy Rebates aren't open yet.

  • When the city wants a permit

    The city's own exemption list says you can replace a mechanical appliance in a house without a permit, as long as it doesn't run on gas or oil. A like-for-like heat pump or AC swap fits that. A new gas furnace or gas water heater doesn't. It needs a permit.

What Manassas Customers Say

  • “Our FB community page recommended their service, and I texted them about our emergency. They were prompt in answering our emergency call and quickly scheduled an inspection of the issue. Jim and his apprentice, Quinn, answered our emergency call the next day (less than eight...”

    Glenn M. · Google review, January 2026

  • “I highly recommend Airforce One Heating for any AC or heating services. Jim as usual responded quickly to my request for service and was able to fix the AC problem. Thank you Jim.”

    Folake M. · Housecall Pro review, July 2025

  • “My husband and I were very pleased with Jim's knowledge of HVAC units. We thought we needed a whole house dehumidifier. Upon Jim's inspection of our system top to bottom, he felt our humidity could be rectified with a thorough cleaning of the outside unit and a few adjustments on...”

    Karl & Carolyn E. · Housecall Pro review, June 2025

  • “Best AC tech we have ever had. Great service plan!!! On time, very professional. Answered all our questions. Jimmy gave us peace of mind that our AC will work all summer!”

    Sharleen & Mike B. · Housecall Pro review, April 2024

  • “I highly recommend Air Force One Heating and Cooling for your HVAC needs. Jim, the owner, is knowledgeable, helpful, and above all, honest-He will not sell you anything that you don’t need. He will simply diagnose your problem and then give you options how to proceed after. It...”

    James A. · Housecall Pro review, March 2024

  • “Thank you so much for an excellent service and quick response! I highly recommend Air Force One Heating and Cooling!”

    Local business owner · Housecall Pro review, November 2023

Manassas HVAC FAQs

Do you serve both the City of Manassas and the county side?
Yes. We work in the city and in the Prince William County parts of 20109, 20110, 20111 and 20112. Give us your street address and we'll sort out which rules apply.
Why does my AC shut off on summer afternoons in the city?
If you're enrolled in the city's Load Management Program, a switch cycles your compressor during peak hours. That's normal. If it's off for longer than those cycles or won't start again after, call us and we'll check it.
Do I need a permit to replace my furnace in the City of Manassas?
For a gas furnace, yes. The city only exempts appliance replacements that don't burn gas or oil. A same-type heat pump or AC swap in a house is on the exempt list.
Is my system worth repairing?
Repairs start with a $99 diagnostic visit, and we'll tell you what's wrong and what it costs. If the system is old and the repair is big, get a replacement price too. The instant estimate on our site gives you a range, and a new-system request turns into a free in-home estimate.
Are there rebates for a new system in Manassas?
Fewer than last year. The federal tax credit ended with 2025 installs and the state rebates haven't launched. If Columbia Gas is your gas company, WarmWise pays $300 to $500 on a qualifying high-efficiency gas furnace while money lasts.
Do you handle heating and cooling emergencies in Manassas?
Yes. Calls are answered 24/7 and we respond right away. Most repairs in Manassas are done the same day or the next day. Call (202) 246-6999 and tell us what the system is doing.
Are you a local heating contractor for Manassas?
Yes. We're based in Nokesville, next door to Manassas, and hold Virginia Class A contractor licences 2705181110 and 2710069907. We repair and replace furnaces, heat pumps and air conditioners across 20109, 20110, 20111 and 20112.

Nearby Service Areas

Bristow, VA Prince William County Gainesville, VA Prince William County Manassas Park, VA Manassas Park (independent city) Centreville, VA Fairfax County
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