Chantilly, VA
HVAC Repair in Chantilly, VA
Heat pump losing ground in July, a furnace that starts and stops every few minutes, or an older system you're wondering about? We repair heating and cooling across Chantilly and give the price first.
HVAC Repair
Schedule service in Chantilly
Monday - Friday: 8 AM to 10 PM
Saturday: 8 AM to 10 PM
Sunday: 10 AM to 10 PM
Diagnostic visit: $75, or $115 for a double unit.
Credited toward your repair when you approve the quote.
Chantilly notes
Heating and cooling in Chantilly houses
Much of Chantilly was built in the 1980s and 1990s, so many houses here are on their second heating and cooling system, or getting close to needing one.
Two-story houses often have a single system serving both floors, and the upstairs runs warmer in summer. Some have a zoning system with motorized dampers; when a damper sticks, one floor gets too much air and the other too little.
Short-cycling, where a system starts and stops every few minutes, can come from a dirty filter, a thermostat in a poor spot, a flame sensor on a furnace, or a system that's simply too large for the house. Each needs a different fix, so it's worth diagnosing before replacing parts.
Keep supply and return vents clear of furniture and rugs. A blocked return starves the system of air and can freeze the coil in summer.
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 Chantilly, VA, these guides explain the most common symptoms, which checks are safe to try yourself, and when a technician should take over. All guides.
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Nearby coverage
HVAC Repair in Nearby Areas
We also provide hvac repair in Reston, VA, and serve homeowners in Fairfax City, VA, Fairfax Station, VA, Vienna, VA and Tysons, VA.
This location is part of our hvac repair coverage across the DC metro area — see all appliance services in Chantilly, VA.
Neighborhoods we regularly cover in Chantilly, VA: Greenbriar, Brookfield and Sully Station.
Frequently asked questions
HVAC Repair in Chantilly, VA FAQ
Can someone come fix my AC or furnace today in Chantilly?
We're based in Alexandria, about 22 miles from Chantilly. 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 Chantilly?
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 Chantilly, VA get priority scheduling. The diagnostic visit is $75 for a single appliance 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. Typical HVAC price ranges are in our repair cost guide.
What heating and cooling problems do you fix in Chantilly?
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.
Why is my upstairs so much warmer than downstairs?
Heat rises, and one system serving two floors often can't balance them perfectly. Partly closing a few downstairs supply vents and running the fan continuously can help. If your system has zones, a stuck damper or a failed zone control could be the cause.
Should I repair or replace an older heat pump?
It depends on the repair and the age. A capacitor, contactor or fan motor is worth fixing on almost any system. A failed compressor or a major refrigerant leak on a system past about 15 years old is where replacement deserves a serious look.
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.