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Furnace and AC replacement in Lovettsville runs $8,898 to $23,000 installed. About half the homes in 20180 went up since 2000, many on their first pair.
Price range
$8,898-$23,000
8yrs @ 7.99%
$126/mo
15yrs @ 9.99%
$96/mo
Monthly figures on the starting price, the whole price financed, on approved credit. The lender sets the final terms. How financing works
Get your price in writing
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5.0 stars across 1,132 reviews
One of our technicians with a new Trane outdoor unit he just installed beside a Northern Virginia house.
Licensed and insuredVirginia Class A contractor #2705192276
24/7 emergency serviceOften same-day, and we will tell you honestly when we can get there.
Our own HVAC installersA dedicated heating and cooling team, separate from our plumbers
Price in writing firstYou see every option priced before anything is ordered
What it costs
$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
or $148/mo at 0% APR for 60 months
Furnace alone, keeping your AC
$4,285 to $14,040
or $71/mo at 0% APR for 60 months
Heat pump system instead
$8,499 to $21,650
or $142/mo at 0% APR for 60 months
Monthly figures: 60mo @ 0% APR on each starting price, the whole price financed, on approved credit. Longer plans lower the payment and cost more in total. The lender sets the final terms. How financing works
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.
What’s different in Lovettsville
At the NOAA co-op in Purcellville, the nearest long-record station, the year averages 4,942 heating degree days and 1,050 cooling degree days. Summers still bite: on July 28, 2023, mesonets across Western Loudoun measured heat indices above 110. The furnace gets sized to the winter heat loss and the air conditioner to the summer gain: two numbers, not one guess off old labels.
Across 20180 the Census counts 781 homes built in the 2000s and 503 in the 2010s, and the typical owner’s house dates from 2001; inside the town limits, 2007. Another 671 went up in the 1980s and 1990s, and most of those are on a second furnace and air conditioner, not always installed the same year. If the outdoor unit is from 2016 and the furnace from 1998, the job may be the furnace alone, $4,285 to $14,040.
Look in the closet before pricing anything. A furnace has a burner and a flue: a metal vent pipe, or two white plastic pipes out the wall. An air handler has neither, just a fan, a coil and electric heat strips, and then the outdoor unit is a heat pump, priced as a heat pump system at $8,499 to $21,650. The two run nearly even here: across the ZIP about 46 owner homes in 100 heat with propane and about 41 with electricity.
The oldest houses need the ducts checked first. In town 88 homes date from 1939 or earlier; across the ZIP, 268. Their ductwork usually came long after they were built, snaked through closets and an attic, so we measure the supply and return before choosing a size.
By the numbers
From the Census Bureau’s 2020 to 2024 survey, owner-occupied homes unless it says otherwise.
When it’s time
On August 3, 2024, a storm blew down numerous trees along Milltown Road just south of town, and on February 16, 2025, a mesonet in Lovettsville clocked a 63 mph gust. After a storm, look for bent fins, a dented top or torn line insulation, and don’t run a damaged unit; call us and we’ll check it all. If it and the furnace are both near twenty, price the pair.
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.
Plenty of houses built since 2000 still run the builder’s furnace and AC. They wear out on about the same schedule, so when one goes, price the pair.
Choosing who installs it
Ask every company that quotes the job, us included.
The rating plates on the furnace and the outdoor unit carry the dates. If one half is five years old, a quote for the pair is more than you need.
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.
Furnace, outdoor unit, matching coil, refrigerant lines, thermostat, permit and hauling the old one away. If it isn’t on the paper, ask.
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.
Two of our crew going over a work order before the day's calls.
The system we put in first
Built to take a beating. Put in by our crew.
Heat lamps, snow and rain on one outdoor unit: that’s Trane’s own film. We’re a Trane Comfort Specialist, on Trane’s own dealer locator, and when you pick a Trane, our crew puts it in.
Films: Trane’s own.
From our Google reviews
5.0 stars across 1,132 reviews. Read them on our reviews page.
Very professional HVAC installation, knowledgeable technicians, clean work,respectful of property, punctual, conscientious.
Where we work
Next door to Lovettsville: Waterford, Paeonian Springs, Hamilton, Purcellville and Leesburg.
Questions
Loudoun County’s Department of Building and Development, in town or out; the Town of Lovettsville handles zoning and leaves building permits to the County. A new propane furnace needs that County permit even in the old one’s spot, and since October 1, 2025 the County skips plan review when the BTUs and the location stay the same.
Price them one at a time. About 94 homes in 100 across 20180 are detached, and the bigger ones often have one system for the main floors and another for the bedrooms, each with its own furnace and outdoor unit, often replaced years apart. The HVAC replacement estimator prices each.
$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.
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.
Ready when you are
Call, send the form at the top, 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
4230 Lafayette Center Dr N, Chantilly, VA 20151
44679 Endicott Dr, Suite 211, Ashburn, VA 20147
Virginia Class A contractor license #2705192276
SwiftPro Heating, Cooling & Plumbing is a licensed, BBB Accredited (A rating), independently owned heating, cooling and plumbing company in Chantilly, serving Lovettsville and the rest of Northern Virginia. Virginia contractor license #2705192276. 5.0 stars across 1,132 reviews on Google, Angi, Yelp, the BBB and Facebook. SwiftPro maintains a dedicated HVAC team and a dedicated plumbing team.
From SwiftPro Heating, Cooling & Plumbing in Chantilly. Housing figures are the Census Bureau’s American Community Survey, 2020 to 2024, for each place named; permit, water and sewer facts link to each office’s own page and were checked in September and October 2026.