Every furnace installation Fairfax VA job we do covers the equipment, the labor, the permit, and the cleanup. Here is what is included in the standard price, and what we quote separately if your home needs it.
We supply and install the furnace you selected, plus a new programmable or smart thermostat wired and configured. Old thermostat and mounting plate are removed and disposed of. We register the manufacturer warranty in your name before we leave.
We pull the Fairfax County mechanical permit and meet the inspector on site. You get the signed permit card for your records. This matters at resale and keeps your homeowner's insurance valid if there is ever a claim.
New gas connector, sediment trap, and shutoff valve installed to code. Flue and combustion air piped in PVC or metal per manufacturer spec. Condensate routed to an approved drain with a safety switch on the pan.
Manual J load calculation and static pressure test before equipment selection. We check return-air capacity and note any duct repairs needed. Duct modifications are quoted separately so you see the cost before we start.
Old furnace, thermostat, and packaging removed from your property. Drop cloths on floors and stairs, and a full sweep of the work area. We test the system in heat mode and confirm temperature rise is within spec before we call it done.
Included at no charge: one heating-season tune-up within 12 months of install. We replace the air filter, check gas pressure, clean the flame sensor, and verify the condensate drain is flowing. Keeps your warranty valid and catches small issues early.
Furnace installation Fairfax VA is the removal of your old heating unit and the code-correct installation of a new gas, electric, or high-efficiency furnace, including the flue, gas line, condensate management, thermostat, and duct connections. It is needed when a furnace cracks its heat exchanger, fails to ignite, or crosses 15 to 22 years of service. A proper install starts with a Manual J load calculation, not a guess based on the old unit's sticker.
Fairfax homes take a beating from January lows that drop into the teens and summer humidity that rusts out heat exchangers from the inside. If your furnace not igniting has become a weekly ritual, or your gas bill jumped $80 a month with no change in habits, replacement usually beats another repair. We handle new furnace installation in Fairfax VA with financing for homeowners who want a Carrier or Rheem system without paying cash up front.
From the first phone call to the final combustion test, here is exactly what happens when we install your new furnace in Fairfax.
Schedule
Call or book online — a real human picks up and confirms a 2-hour arrival window.
Diagnose
Licensed tech inspects on-site, then walks you through the cause and your options.
Fix
The job is completed to code and done right the first time — no shortcuts, no surprises.
Guarantee
Every job backed by a written workmanship warranty — and we stand behind it.
Manifold gauge set
Used to set gas pressure and verify inlet and manifold readings against the manufacturer's spec. We do not guess at gas pressure; we measure it and record it on the commissioning sheet.
Multimeter and clamp meter
Used to test igniters, flame sensors, capacitors, contactors, and blower motors. Amp draw on the blower tells us if the motor is failing or if the duct system is too restrictive.
Combustion analyzer
Measures carbon monoxide, oxygen, and temperature rise in the flue. We use it on every startup to confirm the furnace is burning clean and the heat exchanger is sealed.
Tube cutter and flaring tool
Used for clean copper tubing cuts and flares on gas lines and condensate routing. A square cut and proper flare prevent leaks that a hacksaw and tape would hide for a year.
Vacuum pump and recovery machine
When we replace a matched AC coil with the furnace, we recover refrigerant per EPA rules and pull a deep vacuum before charging. No shortcuts on the refrigeration side.
Psychrometer
Measures wet-bulb and dry-bulb temperatures to verify airflow and system performance. It confirms the blower is moving the CFM the Manual J called for.
Manual J load calculation
We measure windows, insulation, ceiling height, and orientation room by room, then calculate the actual BTU load. This is how we avoid oversizing, which is the number one cause of short cycling and premature blower motor failure in Fairfax homes.
ACCA quality standards
Our install process follows ACCA 5 QI protocols for equipment selection, duct design, and commissioning. That means documented static pressure, verified temperature rise, and a combustion test on every job, not just the ones that need it.
Virginia Uniform Statewide Building Code
We install to the current Virginia code for gas piping, flue clearances, combustion air, and condensate disposal. Fairfax County inspects our work, and we meet the inspector on site so there are no surprises.
AHRI-matched systems
When we pair a furnace with a new AC coil, we select an AHRI-certified match. That keeps the manufacturer warranty intact and gives you the rated efficiency instead of a number on a brochure.
01
What we do: We assess the heat exchanger, document the failure, and provide a written quote for a code-compliant replacement. We pull the permit and coordinate with the buyer's agent so closing is not delayed.
→ New 96% furnace installed in two days, permit card delivered to the title company, and the sale closes on schedule.
02
What we do: We quote a matched Carrier furnace and coil, handle the refrigerant recovery with EPA Section 608 procedures, and install both in a single two-day visit. One permit covers the whole job.
→ New heating and cooling for less than two separate installs, with a single warranty registration and one maintenance plan.
03
What we do: We measure the closet, select a compact two-stage furnace that fits the space, and reconfigure the flue and condensate routing to meet code. We use a low-profile media cabinet to keep filter changes easy.
→ Efficient heat in a tight footprint, with the closet door closing flush and the condensate draining correctly.
04
What we do: We run the load calc, present three equipment tiers with monthly payment options, and process the financing application during the visit. Install is scheduled within the week.
→ New Rheem furnace installed before the first freeze, with a monthly payment lower than the old emergency repair bills.
Fairfax sits in a mixed-humid climate, which means our furnaces work hard in January and sit idle in July. That swing is why we see so many cracked heat exchangers in 15- to 20-year-old units around Fairfax County. Housing stock ranges from 1940s bungalows in Falls Church with original ductwork to new construction in Chantilly with tight envelopes and right-sized equipment. We size each one differently. A 2,000 sq ft colonial near downtown Fairfax may need 80,000 BTU, while a new townhome in Centreville might need only 45,000. We pull Fairfax County mechanical permits on every job and install to the Virginia Uniform Statewide Building Code. If you are comparing energy efficient furnace installation Fairfax VA options, ask for the AFUE rating and the AHRI certificate, not just the brand name. We also check the condensate drain routing carefully because Fairfax basements flood when a PVC line clogs in February.
Fairfax City
Older homes near downtown often have undersized returns and original 1960s ductwork. We frequently add a return-air drop during furnace replacement to fix cold upstairs bedrooms.
Fairfax Station
Larger colonials on wooded lots deal with long duct runs and higher static pressure. We measure static pressure on every estimate and quote duct improvements when needed.
Vienna
Many Vienna homes have furnaces in tight closets or crawlspaces. We select compact two-stage units and reconfigure flue and condensate routing to fit the space and meet code.
Centreville
Newer townhomes with right-sized equipment and sealed envelopes. We run a full Manual J because matching the old BTU sticker would oversize the new furnace.
January lows dropping into the teens
Furnaces run near continuous duty during cold snaps, which exposes undersized returns and failing blower motors. We verify static pressure and amp draw so the new unit can handle a Fairfax cold snap without tripping limits.
Mixed-humid summers with high indoor humidity
Condensate lines clog and overflow when humidity is high. We install a safety switch on the pan and route PVC condensate to an approved drain so a clog does not shut down the furnace in January.
Older housing stock with original ductwork
Crushed or undersized ducts force the blower to work harder and shorten its life. We inspect accessible duct runs during the estimate and quote repairs before install so the new furnace performs as rated.
Fairfax County mechanical permit and inspection
Every install is permitted and inspected. We schedule the inspection and meet the inspector on site, which keeps your homeowner's insurance valid and avoids issues at resale.
Most furnace replacements start with a symptom the homeowner has been living with for months. Here are the ones we see most often in Fairfax County and what we do about them.
Problem
A failed igniter or dirty flame sensor leaves you without heat when you need it most. Repeated no-heat calls add up, and a cracked heat exchanger can leak carbon monoxide into the home.
Our Fix
We test the igniter, flame sensor, and gas valve. If the heat exchanger is sound, we repair the ignition system the same day. If it is cracked, we quote a new furnace installation Fairfax VA with financing and bring temporary heat until install day.
Problem
An 80% furnace that short-cycles because it is oversized wastes 15% to 25% of the gas it burns. Over a Fairfax winter, that is $200 or more out the flue.
Our Fix
We run a Manual J load calculation to confirm the right size, then install a two-stage or modulating furnace with a properly matched blower. Correct sizing and a clean duct system usually cut the gas bill by 20%.
Problem
Bedrooms over the garage or at the end of a long duct run never reach temperature. Homeowners run space heaters, which trip breakers and raise electric bills.
Our Fix
We measure static pressure and inspect the duct system during the estimate. If a return is undersized or a run is crushed, we quote the repair alongside the new furnace. Balancing dampers and correct blower speed finish the job.
Problem
A failing blower motor or shorted control board will trip the breaker repeatedly. Ignoring it can burn out the board and leave you with a no-heat call in January.
Our Fix
We test the blower motor, capacitor, and control board with a multimeter and clamp meter. If the furnace is under 12 years old, we repair it. If it is older and parts are on backorder, we install a new unit and finance it.
A new furnace is not just a box in the basement. It changes your winter, your gas bill, and how fast your house recovers heat after a cold snap. Here is what a correctly sized system delivers.
Lower Winter Gas Bills
A 96% AFUE two-stage furnace burns roughly 20% less gas than the 80% single-stage unit it replaces. For a 2,200 sq ft Fairfax home, that is about $180 to $260 saved per heating season at current Virginia rates. We set the blower speed and static pressure so the savings actually show up on your Washington Gas bill.
Heat That Reaches Every Room
Cold bedrooms over the garage are usually a duct and sizing problem, not a furnace problem. We run a Manual J load calc, verify return-air capacity, and balance dampers so the upstairs bedroom hits 70F on a 22F night. No more space heaters tripping the breaker at 2 a.m.
Fewer Mid-Winter Breakdowns
New igniters, flame sensors, capacitors, and blower motors mean no 3 a.m. no-heat calls. We install surge protection on the control board and a media cabinet with a MERV 11 air filter, which is the single biggest cause of blower motor failure we see in Fairfax County.
Warranty and Code Coverage
Every furnace installation Fairfax VA job we finish is permitted through Fairfax County, inspected, and registered with the manufacturer. You get the full 10-year parts warranty plus our 5-year workmanship warranty. If a flue joint leaks or a condensate line clogs, we come back at no charge.
Google ★★★★★4.9
Installed a new Carrier furnace in our Fairfax Station home in two days. They pulled the permit, cleaned up, and the upstairs is finally warm. The gas bill dropped $74 the first month. Straight answers from the estimate through the walkthrough.
Yelp ★★★★★4.8
We had three quotes for furnace replacement and installation. These were the only ones who measured the house. They found a crushed return duct and fixed it during the install. No pressure, no upsell, and the price matched the quote exactly.
BBB ★★★★★4.9
Our furnace died on a Friday night in January. They brought temporary heat the same night and installed a new Rheem system on Monday. Financing made the monthly payment less than what we were spending on space heaters and emergency repairs.
Fairfax HVAC Experts has been installing and servicing heating systems since 2004. That is 22 years of Virginia winters, county inspections, and equipment changes. Our technicians hold NATE certification and EPA Section 608 certification, and we work to ACCA quality standards on every load calculation and duct design. We have installed thousands of furnaces across Fairfax County, from Falls Church bungalows to Centreville townhomes, and we know what fails here and why.
Real experiences from customers who chose our Furnace Installation services.
“Our 1998 furnace finally cracked its heat exchanger in November. Fairfax HVAC Experts came out the next morning, ran a load calc, and had a new Trane two-stage unit in by the following Wednesday. They pulled the permit, cleaned up everything, and the upstairs bedroom is finally warm. Gas bill dropped about $70 the first month.”
Dave R.
Homeowner, Fairfax Station
“We got three quotes for furnace replacement and installation. These guys were the only ones who actually measured the house instead of matching the old BTU sticker. They found a crushed return duct behind the drywall and fixed it. Install took two days, and they left the basement cleaner than they found it.”
Priya M.
Homeowner, Vienna
“Furnace died on a Friday night in January. They brought temporary heat the same night and installed a new Carrier 96% system on Monday. Financing made the monthly payment less than what we were spending on space heaters and emergency repairs. Straight answers, no upsell.”
Tom K.
Homeowner, Centreville
Real answers to the questions we hear most often from local homeowners and property managers.
When your furnace dies at 2 a.m. on a 15F night, we run 24/7 emergency calls across Fairfax. We diagnose the no-heat issue, restore temporary heat, and schedule the replacement if the unit is beyond repair.
View Emergency HVAC RepairMany Fairfax homeowners replace the furnace and AC together to save on labor. If your AC not cooling is a capacitor or contactor issue, we can repair it during the same visit as your furnace install.
View AC RepairPairing a new air conditioner with your furnace install saves on permit and labor costs. We size the coil to match the furnace blower and charge the system by subcooling, not by gauge guessing.
View AC InstallationIf your AC is R-22 and low on charge, replacing it alongside the furnace makes sense. We install R-410A and R-32 systems and handle refrigerant recovery with EPA Section 608 procedures.
View AC ReplacementNot every furnace needs replacement. If your unit is under 12 years old and the heat exchanger is sound, we repair igniters, flame sensors, blower motors, and control boards the same day.
View Furnace RepairHeat pump not defrosting or stuck in auxiliary heat? We service all brands and can convert a failing heat pump to a gas furnace setup if that fits your Fairfax home better.
View Heat Pump RepairReach us at +1 (571) 760-4715 any time, day or night. Our office is open Monday through Friday from 8 a.m. to 6 p.m., and emergency dispatch runs 24/7. Most calls placed before noon get a same-day visit.
Phone
+15717604715Address
14500 Chronical Dr, Fairfax, VA 22030
Hours
Mon–Fri: 7AM – 7PM
Sat: 8AM – 4PM
Sun: Emergency Only
24/7 Emergency Available
