Furnace Repair in Chantilly, VA
Chantilly sits between Dulles Airport and Fairfax — home to the Steven F. Udvar-Hazy Center's space shuttle, the Dulles Expo Center, and mile after mile of 1980s-and-90s subdivisions. Their furnaces are hitting the age where small problems turn expensive, and that's our specialty.
Every corner of Chantilly covered
Brookfield, Franklin Farm, Chantilly Highlands, and the neighborhoods strung along Route 50, Route 28, and the Fairfax County Parkway — ZIPs 20151 and 20152, from the Sully Historic Site side to the Dulles South edge.
The 1980s furnace wall
Chantilly's subdivisions went up fast in the 1980s and 1990s, and a lot of those original furnaces are still in basements today — limping through winters on borrowed time. The patterns repeat: heat exchangers with stress cracks, control boards that fail in cold snaps, and flue venting that was never quite right.
Because Chantilly is gas-furnace country, we treat every visit as a safety visit too. Combustion checks, venting inspection, and carbon monoxide detector placement come standard with our tune-ups here — the furnace has to heat the house, but first it has to be safe. When a system is truly done, we size its replacement to the house and the ductwork, not to whatever was there before.
What we do for Chantilly homes
Repair, maintenance, and safety work for Chantilly's aging furnace fleet.
Furnace Maintenance & Tune-Ups
Chantilly's aging systems get the most from tune-ups: burner cleaning, safety checks, and parts caught before they fail.
Carbon Monoxide Safety & Detection
Gas furnaces and old flues make CO safety non-negotiable — detector placement and combustion checks for Chantilly homes.
Heat Exchanger Repair
Stress cracks in 1980s heat exchangers are the classic Chantilly find — we inspect with a camera and handle it properly.
Furnace Installation & Replacement
When the original unit finally retires, Chantilly gets a right-sized replacement installed to match its ductwork.
Whole-Home Humidifier Installation
Chantilly's forced-air systems dry winter air to a crisp — a duct-mounted humidifier fixes every room at once.
Thermostat Installation & Repair
Upgrading from the original builder thermostat? We install modern controls and calibrate them to the furnace.
Chantilly's 1980s units are living on luck. An inspection tells you exactly where yours stands.
Chantilly furnace FAQs
Asked by your neighbors, answered straight.
Which parts of Chantilly do you serve?
All of it — Brookfield, Franklin Farm, Chantilly Highlands, and the subdivisions along Route 50, Route 28, and the Fairfax County Parkway. ZIPs 20151 and 20152.
Should I get a carbon monoxide detector check with my furnace tune-up?
Yes, especially for gas furnaces. We test detector placement and operation and check the furnace's combustion and venting during the same visit.
How quickly can you reach Chantilly from Herndon?
Chantilly is a short drive south of Herndon via Route 28. No-heat calls get priority dispatch ahead of routine appointments.
My Chantilly furnace is 20+ years old but still runs. Leave it alone?
Not without an inspection. Furnaces that old can develop cracked heat exchangers that leak carbon monoxide. We check it, show you the condition, and let you decide.
Do you service the big two-story colonials off Route 50?
Yes. Chantilly's larger colonials are a common service call — uneven heat between floors, oversized equipment, and aging ductwork are the usual suspects.
Chantilly's neighbors we serve
All within a short drive of our Herndon base.
Last updated: October 19, 2026
An old furnace is only fine until it isn't.
Chantilly's 1980s systems deserve a real inspection before winter. Call — we'll look it over properly.