Open 24/7 for emergencies
A Trane furnace, AC or heat pump repair in Northern Virginia starts with the $99 diagnostic, and most Trane repairs run $95 to $1,500, priced in writing before anything is touched. Trane is what we install first, so we know where these systems wear.
Get your price in writing
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Rather talk now? (703) 997-9757
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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
Read your own Trane
The things people describe on the phone, what they turn out to be on a Trane, and what the fix costs.
The burners lit and went out, or never lit. On a Trane that’s usually a sooted flame sensor ($95 to $180 to clean) or a cracked igniter ($240 to $410). The board’s light will be flashing a code; the table below says which.
A furnace that keeps restarting is protecting itself: a dirty flame sensor, a clogged filter tripping the high limit, or a pressure switch that can’t prove the venting. Start with the filter. Then count the flashes.
Most of the time it’s the run capacitor ($240 to $370). Turn it off at the thermostat: a compressor that keeps trying to start against a dead capacitor can burn itself out.
In summer, ice means the coil isn’t getting enough air (a filter, a dirty blower wheel at $300 to $440) or it’s low on refrigerant, which means a leak. On a heat pump in winter, some frost is normal; a solid block of ice that never clears points at the defrost board ($450 to $1,150).
A high-efficiency furnace and every AC coil make water, and it has to drain. A clogged trap or drain line ($175 to $420 to clear, with a float switch added) is the usual answer. Water from the tank beside it is a water heater call.
A squeal or whine is usually the inducer or the blower motor’s bearings on the way out (a blower motor runs $670 to $2,400, standard against variable speed). A bang at startup is delayed ignition: gas building up before it lights. That one needs a look soon, not next month.
A system that never shuts off is short on capacity: low refrigerant, a dirty outdoor coil, a blower wheel packed with dust, or a heat pump leaning on its backup electric heat. Each one is a price, not a guess.
Leave the house, then call the gas company from outside. Once it’s safe, call us: (703) 997-9757, 24/7.
The codes on the board
Look through the window in the furnace’s lower door at the control board’s light, count the flashes between pauses, and write the number down before you reset anything: a reset clears it.
An E code flashes with the system mode. American Standard sells the same model numbers.
| Code | What it means | What it usually takes |
|---|---|---|
| E2.1 | Flame never sensed: one-hour lockout after 3 tries | Gas supply, igniter or flame sensor |
| E2.2 | Flame sensed, then lost: lockout after 10 times | Usually the flame sensor |
| E3.2 | First-stage pressure switch open | The venting or the inducer; Trane says it’s usually not the switch itself |
| E04 | Limit, rollout or reverse airflow switch open | Start with the filter and the blower wheel |
| E05 | Flame detected when there shouldn’t be one | Call |
| E6.1 | Voltage polarity reversed | A wiring fix |
| E6.3 | Igniter relay or igniter open | Usually a new igniter |
| E08 | Flame current low but still running | A flame sensor cleaning |
| E09 | Inducer limit or condensate pressure switch open | A blocked condensate drain, usually |
Source: Trane S9X installation, operation and maintenance manual. Codes vary by model and control board: the chart printed on your unit, or its manual, is the final word.
| Flashes | What it means | What it usually takes |
|---|---|---|
| 2 | Retries or recycles exceeded | Gas, igniter or flame sensor |
| 3 | Inducer or pressure switch error | The venting, the inducer or a blocked drain |
| 4 | Limit or rollout switch open | The filter and airflow first |
| 5 | Flame sensed when there shouldn’t be one | Call |
| 6 | Line voltage polarity reversed | A wiring fix |
| 7 | Gas valve circuit error | The gas valve or its wiring |
| 8 | Weak flame | A flame sensor cleaning |
| 9 | Inducer limit open | Airflow or venting |
Source: Trane two-stage variable speed furnace installer’s guide. Codes vary by model and control board: the chart printed on your unit, or its manual, is the final word.
What it costs
Our own repair prices, by part. Tap a system to narrow the list.
Flame sensor cleaned
The thin rod that proves the burners lit. Coated in soot, it tells the board the flame went out, and the gas shuts off a few seconds after the burners light.
$95 to $180
Condensate drain cleared, trap and switch added
High-efficiency furnaces and every AC coil make water. When the drain or trap clogs, a float switch stops the system on purpose so the water doesn’t end up in the ceiling.
$175 to $420
Refrigerant topped up
One to three pounds. If it needs it again next season it’s leaking, and topping it up every year is the expensive way to lose.
$190 to $740
Run capacitor replaced
The part that kicks the compressor and fan motors into turning. The single most common reason an outdoor unit hums and never starts.
$240 to $370
Igniter or flame sensor replaced
A cracked hot surface igniter glows weakly or not at all, so the burners never light. Usually on the van.
$240 to $410
Contactor replaced
The relay that sends power to the outdoor unit. Burnt or stuck points mean it sits silent while the thermostat calls, or runs when it shouldn’t.
$290 to $425
Blower wheel pulled and cleaned
A wheel caked in dust moves a fraction of the air it should: weak airflow, a frozen coil, a furnace tripping its limit.
$300 to $440
Thermostat replaced
Standard through smart, wired and set up for the system it runs.
$300 to $640
Defrost board replaced
Heat pumps only: the board that decides when to melt the ice off the outdoor coil.
$450 to $1,150
Control board replaced
The brain in the furnace or air handler. When it goes, nothing downstream of it does what it’s told.
$550 to $1,180
Blower motor replaced
The indoor fan motor. The spread is a standard motor against a variable-speed one.
$670 to $2,400
Condenser fan motor replaced
The fan on top of the outdoor unit. If it stops while the compressor runs, the repair gets more expensive by the minute.
$1,100 to $1,500
Refrigerant leak found and repaired
Finding it, fixing it, then recharging the system.
$1,850 to $2,700
or $31/mo at 0% APR for 60 months
Compressor replaced, part under warranty
Labor and refrigerant, when the manufacturer still covers the compressor.
$1,900 to $2,500
or $32/mo at 0% APR for 60 months
Compressor replaced, out of warranty
The big one, and usually the point where replacing the system wins. You get both numbers.
$2,200 to $5,100
or $37/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
Comfort+ members get the $99 diagnostic included in the visit, 15% off any service, and 50% of each repair bill banked toward replacing that system, up to $1,500. How Comfort+ works.
Fix it or replace it
The serial number on the rating plate gives the year it was built. Here’s how to read it.
On a Trane or American Standard built since 2010, the first two digits of the serial number are the year and the next two the fiscal week: 1934… was built in 2019, week 34 (Trane’s catalog).
In Consumer Reports’ 2022 central air survey of 23,997 systems, Trane was the only one of 21 brands rated Excellent for both predicted reliability and owner satisfaction (Consumer Reports, 2022). That’s a reason to fix a good Trane rather than replace it.
Gas furnace alone
$4,285 to $14,040
or $71/mo at 0% APR for 60 months
Keeping the AC you have. By size and efficiency, installed.
Furnace and AC together
$8,898 to $23,000
or $148/mo at 0% APR for 60 months
2 to 5 ton, matched, installed with the permit.
Heat pump system
$8,499 to $21,650
or $142/mo at 0% APR for 60 months
Heat pump and air handler, 2 to 5 ton, installed.
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
Want your own number before anyone comes out? The HVAC estimator prices your house in a few questions.
A Trane heat pump outdoor unit beside a Northern Virginia house, running through a snowy winter.
Why Trane is our first pick
Trane runs the Comfort Specialist program itself and lists the dealers who are on its own locator.
One of our installers behind a new Trane outdoor unit he just set.
The warranty
Maybe, and the serial number tells us. Here’s how Trane’s warranty works.
Trane’s own terms: Trane’s warranty page.
Where we work
Out of Chantilly and Ashburn, across six counties. Pick your town for its own furnace repair page: the houses there, the county’s permit rules, and the same prices.
Keep reading
Every make we work on, in one place: the brands we repair.
Asked on the phone
The diagnostic is $99. Most Trane repairs run $95 to $1,500: a capacitor is $240 to $370, a contactor $290 to $425, an igniter $240 to $410, a control board $550 to $1,180. If it’s past fixing, a new Trane furnace is $4,285 to $14,040 installed and a furnace with an AC is $8,898 to $23,000. From about $71 a month at 0% APR for 60 months, the whole price financed, on approved credit. How financing works
Yes. We’re a Trane Comfort Specialist, listed on Trane’s dealer locator, and Trane is our first pick when a system needs replacing.
Yes. A Trane that came with the house, or one another company put in, gets the same $99 diagnostic and the price in writing first. If it’s still under Trane’s parts warranty, the part may be covered.
Same company, Trane Technologies, and the same furnace warranty document. We repair both the same way.
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.
Get the Trane running
No heat or no cooling, call: (703) 997-9757, 24/7. Not that urgent? Send the form at the top and the office calls or texts you back to set a time.
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
Repair prices are SwiftPro’s own, by part, in Northern Virginia; yours is quoted in writing after the diagnostic. Replacement prices are our installed ranges by system size.
Trane and Comfort Specialist are trademarks of Trane Technologies.