Lorton, VA
HVAC Repair in Lorton, VA
A system that quits on a humid day with water sitting in its drain pan has often just tripped its safety switch. We repair heat pumps, furnaces and air handlers across Lorton.
Appliance Surgeon offers same-day and next-day visits to Lorton homes and buildings. The $75 diagnostic visit is credited to the repair, the price is quoted before any work starts, and every repair carries a 90-day parts-and-labor warranty.
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HVAC Repair
Schedule service in Lorton
Same-day and next-day visits.
Open 7 days until 10 PM (Sundays from 10 AM)
Diagnostic visit: $75, or $115 for a double unit.
Credited toward your repair when you approve the quote.
90-day warranty on parts and labor, and a written quote before any work starts.
Lorton notes
Heating and cooling in Lorton houses
Many of Lorton's newer houses and townhouses put the air handler or furnace in the attic or an upstairs closet. When the drain line from that unit clogs, a float switch in the pan shuts the system off to keep water from coming through the ceiling. If the switch is missing or fails, the first sign is often a stain on the ceiling below.
Clearing the line and emptying the pan gets it running again, but the line will clog again unless it's flushed now and then. Many systems have a capped tee on the drain line for exactly that.
Heat pumps are common here as well. In winter it's normal for one to run for long stretches and to go into defrost now and then, with steam rising off the outdoor unit. A heat pump that runs all day and still can't hold the thermostat setting on a mild day has a real fault.
Change one-inch filters every one to three months. A clogged filter is behind a lot of frozen coils and overheating furnaces.
Repair details
Before the technician arrives
The checklist our technicians follow on every visit is on the HVAC Repair page.
Before the visit:
Replace only the filter if needed, note thermostat settings and stop operation if you smell burning or see water around equipment.
Helpful guides
HVAC Repair guides from our technicians
Before you book in Lorton, VA, these guides explain the most common symptoms, which checks are safe to try yourself, and when a technician should take over. All guides.
More services in Lorton, VA
What else does Appliance Surgeon repair in Lorton, VA?
Refrigerators, freezers, washers, dryers, dishwashers, ovens, stoves, cooktops, microwaves, range hoods, wine coolers and HVAC systems, all in Lorton, VA; pick the one you need.
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Nearby coverage
Where else do we repair heating and cooling systems near Lorton?
We also provide HVAC repair in Colchester, VA, HVAC repair in Woodbridge, VA, HVAC repair in Springfield, VA, HVAC repair in Mount Vernon, VA and HVAC repair in Fairfax Station, VA.
This location is part of our HVAC repair coverage across the DC metro area. See all appliance repair services in Lorton, VA.
Neighborhoods we regularly cover in Lorton, VA: Lorton Station, Laurel Hill and Mason Neck.
Frequently asked questions
HVAC Repair in Lorton, VA FAQ
Can someone come fix my AC or furnace today in Lorton?
We're based in Alexandria, about 12 miles from Lorton. Same-day and next-day appointments are available when the technician route has open windows; call or book online for the earliest option. Urgent heating and cooling visits cost the same standard rate any day of the week, evenings included, right up to 10 PM. Hours run 8 AM to 10 PM Monday through Saturday and 10 AM to 10 PM on Sunday.
Many HVAC repairs are completed in a single visit once the technician has diagnosed the fault and confirmed the parts on hand. If a specific part has to be ordered, we schedule a short return visit to finish the job.
What does HVAC repair cost in Lorton?
Appliance Surgeon charges $75 for the diagnostic visit, or $115 for a double unit (such as a double wall oven, washer-dryer combo or stacked laundry), and the fee is credited toward the repair if you approve the quote. Capacitors, igniters and sensors are common, affordable repairs; compressors and refrigerant work cost more. Every visit runs the same way - diagnosis, then a firm quote you approve before repair. Urgent no-heat and no-cooling calls in Lorton, VA get priority scheduling. Typical HVAC price ranges are in our repair cost guide.
What heating and cooling problems do you fix in Lorton?
Common calls include AC not cooling, heat not working, thermostat problems, weak airflow, system short cycling and unusual HVAC noise. The exact cause is confirmed during diagnosis.
My AC stopped and there's water in the pan under the unit. What happened?
The condensate drain has probably clogged, and the float switch has shut the system off. Leave the system off, dry the pan if you can reach it safely, and book a visit. Running it with a full pan risks a leak into the ceiling.
Why is steam coming off my heat pump in winter?
That's usually the defrost cycle. The unit briefly reverses to melt frost off its outdoor coil, and the meltwater steams. If the coil stays covered in thick ice for hours, defrost isn't working and it needs a check.
Should I try to fix the system myself first?
Two safe checks solve a surprising share of calls: fresh thermostat batteries and a clean filter - a clogged filter can shut a system down on its own safety limits. Beyond that, leave it to a technician. And if you ever smell gas, leave the home and call your gas company or 911 before anything else.