Furnace and AC replacement in Broad Run.
Furnace and AC replacement in Broad Run runs $8,898 to $23,000 installed. The middle owner home here was built in 1979.
- Your price range up front
- Sized to the house, not the old label
- Dedicated HVAC team
Get your new system priced
A 1979 house, a propane tank and an AC: the pair that wears out together here
The middle owner home in ZIP 20137 dates from 1979. About one in six was built before 1960, just over half before 1980, about one in three from 1980 to 1999, and the smallest group, about one in seven, since 2000. A house from the first two groups is on its second or third furnace and AC, and one from 1980 to 1999 is at the age when both halves start giving out together.
Which pair depends on the fuel. Close to three owners in ten burn propane, and there a propane furnace with an air conditioner is the usual match. Just over half heat with electricity, which points to a heat pump system, $8,499 to $21,650; the Census lumps heat pumps in with all electric heat, so it can’t count them. It finds no owner home on utility gas.
About one owner home in seven heats with oil, and we don’t work on oil burners. A house on oil needs a change of fuel instead: a propane furnace with a tank from a supplier, or a heat pump system. Both are ours to price, and that choice is where the quote swings, so tell the estimator what you heat with now.
At Warrenton 3 SE, heating degree days run better than four to one over cooling ones, and Fauquier County sizes heating to a 17 degree design night. Ducts from a later central-air retrofit in an older house were often sized for heat alone, and they cap what a new pair can deliver. Have the ducts looked at before anyone sizes the pair.
Broad Run houses, by the numbers
From the Census Bureau’s 2020 to 2024 survey, owner-occupied homes unless it says otherwise.
The Fauquier County side
ZIP 20137 as a whole: every Broad Run address. About one home in six of them is on the Prince William County side.
- Median home built1979 Census
- Built before 1980about 5 in 10 Census
- Built since 2000about 2 in 10 Census
- Most homes aresingle-family houses, nearly all Census
- Heated withelectricity, about 5 in 10 Census
- Rentedhardly any Census
- A few homes still burn heating oil. We don’t work on oil burners, but a switch to a heat pump or a gas or propane furnace is ours to price.
- Electric heat here usually means a heat pump with backup strips, which is priced as a heat pump system, not a furnace and AC.
What a new furnace and AC costs in Broad Run.
$8,898 to $23,000 installed for a furnace and air conditioner replaced together, 2 to 5 ton, from the same price book as our estimator. Where you land depends on the size of the house, the efficiency you pick, and what the ductwork and venting need.
- Furnace and AC together, installed$8,898 to $23,000
- Furnace alone, keeping your AC$4,285 to $14,040
- Heat pump system instead$8,499 to $21,650
The HVAC replacement estimator gives your house its own number. Then we measure, and the price is in writing before anything is ordered.
Two years of labor come with every install. Monthly plans are on our financing page.
When replacing both makes sense in Broad Run.
Repair bills in both seasons, and the house still isn’t even
A cold bedroom in January and a hot one in July points at airflow as much as equipment. If repairs have piled up on both halves within a few seasons, the diagnostic, $99, gives you the repair list to hold against a replacement range.
Your heat may not be a furnace
Where a lot of homes heat with electricity, the indoor half is often an air handler, and the like-for-like swap is a heat pump system, $8,499 to $21,650 installed.
Third system, original ducts
An older house is usually on its third system, still on ductwork laid out for the first. We check the ducts and venting before sizing the new one.
Who signs off on a new system in Broad Run.
Fauquier County
Fauquier County counts swapping an electric appliance for a similar one in the same spot as an ordinary repair that needs no permit. Moving an appliance to a new spot takes one. Source.
Fauquier County wants a permit for any fuel-fired appliance, so a gas or propane furnace replacement is permit work even in the same spot. Trade permits need no plans, and usually no zoning approval. Source.
Outside the town limits, Fauquier County issues the permit. It wants one for any fuel-fired water heater, propane included, and for any heater being moved; an electric one swapped for a similar unit in the same spot counts as an ordinary repair. Trade permits go out over the counter the day the application comes in. Source.
Prince William County
Prince William County requires a permit to replace a gas or propane furnace or a gas appliance such as a water heater, even like for like. Replacing an electric water heater with one the same size in the same spot needs no permit. Source.
How to pick who replaces your furnace and AC in Broad Run.
Ask every company that quotes the job, us included.
Do they price a heat pump system beside the furnace and AC?
With just over half of Broad Run’s owner homes already on electric heat, a heat pump system at $8,499 to $21,650 is a real alternative to a propane furnace with an AC. Ask for both numbers, and for what the propane tank and the electrical panel each need, then compare.
Do they size it to the house, or copy the old label?
The old size is a guess somebody made years ago. Ask whether they measure the house and check the ductwork first. Too big short cycles; too small runs all afternoon in August.
Is the whole job in the written price?
Furnace, outdoor unit, matching coil, refrigerant lines, thermostat, permit and hauling the old one away. If it isn’t on the paper, ask.
Already holding another company’s quote?
Our free second opinion looks at the system you were quoted on and tells you what it actually needs, with our price if you want it.
What our customers say.
Alex was very professional and the 2 technicians Oscar, and Derek was fast and efficient. They replace my A/C unit within the next day
5.0 stars across 884 Google reviews. Read them on our reviews page.
Furnace and AC replacement questions from Broad Run.
What does it cost, and where does my number come from?
Between $8,898 and $23,000 installed, depending on the equipment’s size and efficiency. The HVAC estimator quiz asks about your house and your heat and gives it its own number. Keeping the AC you have and replacing only the furnace runs $4,285 to $14,040. The heating page shows the choices.
Does Fauquier County want a permit for a furnace and AC swap?
The furnace half burns fuel, and Fauquier County wants a permit for any fuel-fired appliance, even in the same spot. Prince William County asks for one to replace a gas or propane furnace like for like. An electric heat pump or condensing unit swapped for the same type in the same spot is an ordinary repair in both.
How much does a new furnace and AC cost in Broad Run?
$8,898 to $23,000 installed for the pair, by size and efficiency. A furnace alone, keeping your AC, is $4,285 to $14,040. The HVAC replacement estimator gives your house its own number.
Do I have to replace both at the same time?
No. If the AC is young and only the furnace failed, replace the furnace. If they’re the same age, do both: a new outdoor unit needs a matched coil, and one built for the old refrigerant isn’t rated for the new one.
Furnace and AC replacement in the towns next door.
- Furnace and AC replacement in The Plains
- Furnace and AC replacement in Haymarket
- Furnace and AC replacement in Gainesville
- Furnace and AC replacement in Marshall
- Furnace and AC replacement in Warrenton
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Start with your number, then a written quote.
Call, book online, or take the HVAC replacement estimator first. We measure before we quote, and if a repair makes more sense than a new system, you’ll hear that first.
SwiftPro Heating, Cooling & Plumbing is a licensed, BBB Accredited (A rating), independently owned heating, cooling and plumbing company in Chantilly, serving Broad Run and the rest of Northern Virginia. Virginia contractor license #2705192276. 5.0 stars across 884 Google reviews. SwiftPro maintains a dedicated HVAC team and a dedicated plumbing team.
SwiftPro Heating, Cooling & Plumbing, 4230 Lafayette Center Dr, Suite N, Chantilly, VA 20151, (703) 997-9757. Book online, read our reviews, or see every town we serve.