Furnace replacement in McLean.
A McLean gas furnace replacement runs $4,285 to $14,040 installed, with your AC kept in place. About 77 percent of owner homes in 22101 heat with gas.
- Installed price in writing
- Sized to the house, not the old nameplate
- Dedicated HVAC team
Get your furnace priced in writing
Basement furnaces in McLean’s 1950s houses, attic furnaces in its nine-room ones.
Gas does most of the heating in McLean: about 77 percent of owner homes in 22101 burn it, and about half in 22102. Of all the homes in 22101, 56 percent went up between 1950 and 1979, so whatever furnace sits in the basement now is a replacement itself, often the second or third. One installed in the 1990s or the first few years after 2000 has reached the age when gas furnaces usually give out.
Whether the AC stays comes down to its label. A condenser charged with R-410A or an A2L refrigerant, and about a decade old at most, normally earns its place beside a new furnace. The new furnace’s blower pushes that cooling through the house, so it gets set up for the condenser’s size, and the coil on top has to fit the new cabinet.
The Census puts the median 22101 home at nine rooms or more, and a house that size often splits its heat between two systems: a furnace in the basement for the main floors, another in the attic for the bedrooms. When one quits, only that furnace gets replaced, priced on its own. The attic one is the harder swap. Everything has to fit through the attic opening, a ceiling hatch or folding stairs, and a condensing furnace up there drips water all heating season, so its drain line needs a route that stays above freezing.
Propane is the small exception. It heats about one McLean owner home in fifty, more of them in 22102 than in 22101, and the swap is no different except that the new burner gets converted to propane before it’s fired the first time.
The furnaces across McLean, place by place.
Census figures for the owner-occupied homes in each place, and what that usually means for the furnace that’s there now.
| Place | Median home built | Most homes are | Heated with | The furnace there now |
|---|---|---|---|---|
| McLean | 1977 | single-family houses, about 8 in 10 | gas, about 7 in 10 | Gas furnaces on their second or third round, often on a chimney shared with the water heater. |
| Tysons | 1985 | condo and apartment buildings, about 7 in 10 | electricity, about 5 in 10 | Condo and apartment buildings: mostly electric heat, few furnaces. |
McLean houses, by the numbers
From the Census Bureau’s 2020 to 2024 survey, owner-occupied homes unless it says otherwise.
McLean
ZIPs 22101 and 22102 as a whole: every McLean address, Tysons included.
- Built before 1980about 4 in 10 Census
- Built since 2000about 3 in 10 Census
- Most homes aresingle-family houses, about 5 in 10 Census
- Heated withgas, about 7 in 10 Census
- Rentedabout 4 in 10 Census
- In condo buildings the association often has a say over the flue and the gas line, so check its rules before a new furnace goes in.
- Most heat here is gas, so the usual job is gas furnace for gas furnace, and the real choice is how efficient the new one should be.
What a new furnace costs in McLean.
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 McLean.
A recent condenser outside, a 1990s furnace inside
When the condenser in the yard is a recent one and the furnace downstairs dates from the 1990s, the furnace’s burner, draft motor and control board have more winters on them than the condenser has summers. Replace the furnace and keep the condenser.
The heat exchanger is cracked
It’s the wall that keeps the burner’s exhaust out of the air the furnace blows through the house. Nobody patches one; a crack ends the repair conversation.
It’s fifteen or older and acting it
Fifteen to twenty years is a gas furnace’s usual run. Past that, parts get harder to find and each repair buys less time.
Who signs off on a new furnace in McLean.
Fairfax County
Fairfax County requires a permit to replace any gas appliance, even like for like: a gas water heater, furnace or boiler. Replacing a fuel-burning appliance also needs a chimney vent certification. Source.
How to pick the best furnace replacement company in McLean.
Questions to ask anybody who quotes you, us included.
Did they plan the attic furnace’s drain?
A condensing furnace above a bedroom ceiling needs a pan under it and a switch that shuts it off if that pan fills. Ask where the condensate line runs and how it stays clear of the cold.
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.
Excellent price and service. Had our AC/heating system replaced. Gave us a great price and top quality install. Can’t say enough good things about them.
5.0 stars across 884 Google reviews. Read them on our reviews page.
Furnace replacement questions from McLean.
Our McLean house has radiators. Is this the price for us?
No. Radiators or baseboard mean a hot-water boiler, not a furnace. McLean is where we see boilers most. Hot-water heat is a regular part of our McLean heating work, far more than anywhere else we go. A gas boiler is priced at the house after a visit, and a boiler house’s air conditioning is a separate system.
Is there a utility rebate on a high-efficiency furnace in McLean?
Washington Gas has one. The county lists Columbia Gas for only a few parts of Chantilly and Herndon, which leaves McLean on Washington Gas, whose Virginia rebates reward a furnace at 95.1 percent AFUE and up, with a second, bigger tier from 97 percent. One of its network contractors sends in the paperwork, and the terms move, so confirm them first.
How much does a new furnace cost in McLean?
$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 McLean.
More from SwiftPro in McLean
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 McLean 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.