Furnace replacement in Lovettsville.
A new propane furnace in Lovettsville runs $4,285 to $14,040 installed, keeping your AC or heat pump. Under one home in ten here burns natural gas.
- Installed price in writing
- Sized to the house, not the old nameplate
- Dedicated HVAC team
Get your furnace priced in writing
Most Lovettsville furnaces burn propane, and they work a longer winter than Dulles gets.
Among the town’s owner homes the Census counts about 44 in 100 heating with propane and fewer than 8 in 100 on natural gas. Across all of ZIP 20180, farm country included, propane climbs to about 46 in 100 and natural gas drops to about 3. So a new furnace here almost always draws from a tank on the lot.
It runs a longer season than eastern Loudoun’s, too. The NOAA co-op at Purcellville, the nearest long-record station, averages 4,942 heating degree days a year against 4,604 at Dulles Airport, and close to 115 nights at or below freezing. On January 23, 2025, a weather station in Lovettsville read 5 below zero, an unofficial reading the National Weather Service passed along.
Inside the limits the typical owner’s home dates from 2007, and the Census counts 222 homes from the 2000s and 232 from the 2010s, in neighborhoods such as Town Center, Keena and Loudoun West. A propane furnace from the first of those has close to twenty winters on it. One from the 2010s is usually still worth fixing, and the $99 diagnostic visit names the repair first.
The Census counts 88 homes in town from 1939 or earlier and 78 from the 1950s, and the Town’s plan puts the oldest streets along Pennsylvania Avenue and South Loudoun and South Locust Streets. There the furnace often sits in a stone or brick basement and may vent up a masonry chimney. A condensing replacement exhausts through PVC instead, so the quote should show where that pipe leaves the house and whether a propane water heater is left by itself on the old flue.
Lovettsville houses, by the numbers
From the Census Bureau’s 2020 to 2024 survey, owner-occupied homes unless it says otherwise.
Lovettsville
- Median home built2007 Census
- Built before 1980about 3 in 10 Census
- Built since 2000about 6 in 10 Census
- Most homes aresingle-family houses, about 8 in 10 Census
- Heated withelectricity, about 4 in 10 Census
- Rentedabout 1 in 10 Census
- Propane heats a real share of homes here, and we replace propane furnaces too.
- A lot of furnaces here are the builder’s originals, coming up on twenty years.
What a new furnace costs in Lovettsville.
The same price book our estimator runs on, for a gas furnace on its own, 2 to 5 tons, keeping the air conditioner you have. A single-stage furnace in a small house sits near the bottom; a modulating one in a big house, near the top.
- A gas furnace alone, keeping your air conditioner, installed$4,285 to $14,040
- A furnace and air conditioner together, installed$8,898 to $23,000
- Repair diagnostic visit, if it may be worth fixing$99
The HVAC replacement cost estimator narrows it to your house. Then a tech measures, and you get the installed price in writing, at no charge, before anything is ordered.
Natural gas or propane, in a house, a townhouse or a condo, we replace them all. Oil furnaces we don’t.
When a new furnace makes sense in Lovettsville.
It needed a repair in the last cold snap
Christmas week of 2022 went from rain to a hard freeze in a day, and by late on December 23 the wind chill in Lovettsville read 9 below. If yours needed a part that week and it’s near twenty, price the replacement now.
It’s still the builder’s furnace
A house from the 2000s often runs the furnace it was built with. Around twenty years, inducer motors and control boards start to go, one after another.
You heat with propane
We replace propane furnaces as well as natural gas ones. The new furnace is set up for propane before it’s lit, and the quote is written for your house.
Who signs off on a new furnace in Lovettsville.
Loudoun County
Loudoun County requires a permit to swap a gas water heater or furnace. Since October 2025, a replacement that keeps the same BTUs in the same spot needs no plans. Source.
How to pick the best furnace replacement company in Lovettsville.
Questions to ask anybody who quotes you, us included.
Did they size it with weather numbers from out here?
A heat loss calculation starts from how cold the design night gets. Ask which station’s numbers they used; figures from a warmer spot undersize a furnace for a house that sees close to 115 freezing nights a year.
Did they size it to your house?
Ask how they picked the size. Copying the old nameplate repeats whatever was guessed when the house was built.
Did they check the air conditioner you’re keeping?
A new furnace has to work with the coil and the outdoor unit already there. Ask whether they looked at both before quoting a furnace on its own.
Will they tell you if it’s worth fixing?
A good company puts the repair price next to the replacement range and lets you choose. Already holding somebody’s big number? Take the free second opinion first.
What our customers say.
Jaime was great! He was on time, professional, showed me how to change the filter on my new Rheem system and took care of my outside unit too! Thank you!
5.0 stars across 884 Google reviews. Read them on our reviews page.
Furnace replacement questions from Lovettsville.
Does a propane furnace swap in Lovettsville need a permit?
Yes. Loudoun County’s gas permit covers propane the same as natural gas, in town or out, because Virginia’s building code exempts a like-for-like swap only when the equipment doesn’t burn gas, and propane is a gas. The Town of Lovettsville zones but leaves building permits to the County, so the permit is the County’s alone.
What should I check on a propane furnace after a big snow?
A high-efficiency furnace breathes through two white pipes on a sidewall, and a drift can block them and shut it down, so clear them by hand. Keep snow and ice off the tank’s regulator too, since its vent has to breathe. If the heat won’t return, call us and we’ll check it all; the diagnostic visit is $99.
How much does a new furnace cost in Lovettsville?
$4,285 to $14,040 installed for a gas furnace on its own, keeping the air conditioner you have; size and efficiency set where yours lands. A furnace and air conditioner together run $8,898 to $23,000. The HVAC replacement cost estimator gives your house its own number.
Should I repair it or replace it?
Fix the small parts on almost any furnace. Past fifteen years, with a repair over a third of the price of a new one, replacing usually wins. Not sure which you’re looking at? The diagnostic visit is $99, and the tech prices the repair before starting it.
More from SwiftPro in Lovettsville.
More from SwiftPro in Lovettsville
The range first, then your number.
Call, or book online and pick a window. A tech measures the house and puts the installed price in writing before anything is ordered, and if the old furnace is worth fixing, 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 Lovettsville 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.