What is your system doing in Herndon?
Choose the closest match, or call and describe what the system is doing.
An independent HVAC service company covering air conditioning repair, heating repair, HVAC installation and tune-ups.
AC Repair
Air conditioners blowing warm, short-cycling or refusing to start
Furnace Repair
Furnaces with no heat, short cycling or a locked-out control board
Heat Pump Repair
Heat pumps that will not heat, stick in defrost or run nonstop
AC Installation
New central air, replacements and ductless installations
Furnace Installation
New gas and electric furnaces, replacements and upgrades
Ductwork Repair
Leaking ducts, weak airflow and rooms that never get comfortable
HVAC Maintenance
Seasonal tune-ups for cooling and heating systems
Duct Cleaning
Air duct, vent and register cleaning
Thermostat Installation
Smart thermostats, replacements and zoning controls
Mini-Split Repair
Ductless mini-splits and multi-zone systems
Indoor Air Quality
Air purifiers, humidifiers, dehumidifiers and ventilation
HVAC repair in Herndon, the local picture
We handle air conditioning repair, heating repair and system replacement for homeowners in Herndon, and if your house is too hot or too cold right now, call us and we will get you on the schedule. Herndon summers run hot and sticky, and that humidity is usually what makes a house feel worse than the thermostat reading suggests. An AC that runs all afternoon without pulling moisture out of the air is telling you something, whether that is low refrigerant, a dirty coil or a blower that is not moving enough air. Winters here drop below freezing often enough that a furnace or heat pump problem turns urgent fast. We work on the mix of housing Herndon has: townhouses off Elden Street with tight utility closets, split levels and ranches from the older neighborhoods, and newer builds with zoned equipment. Before you call, you can check thermostat batteries and settings, look for a tripped breaker, swap a clogged filter and clear leaves away from the outdoor unit.
Most homes here went up from the 1960s through the 1990s, with townhouse and single-family construction on slabs, crawlspaces and basements, plus newer infill near the Metro. That mix means aging ductwork in tight attics, undersized returns, and split systems that struggle with humid summers unless airflow and refrigerant charge are checked.
Our vans run Route 28, Route 606 (Elden Street), Route 267 (Dulles Toll Road) and Fairfax County Parkway most days.
Herndon ZIPs & nearby cities we cover
From Herndon we also cover Reston, Sterling, Great Falls, Vienna, Ashburn, Chantilly and Oak Hill.
- 20195
- 20196
- 22009
- 22027
- 22032
- 22033
- 22034
- 22035
- 22037
- 22043
- 22066
- 22067
Neighbourhoods we work in around Herndon
- Downtown Herndon
- Kingston Chase
- Franklin Farm
- McNair Farms
- Dulles Park
- Folly Lick
- Sugarland Run
- Chandon
- Reston Heights
Nearby cities we also cover
- Reston heating and cooling
- Oak Hill
- heating and cooling in Sterling
- Chantilly heating and cooling
- South Riding
- Ashburn
- heating and cooling in Oakton
- Tysons
How we compare to other HVAC companies in Herndon
| Temple Heating & Air | Big-box repair chains | Handyman listings | |
|---|---|---|---|
| Written quote before any work | ✓ | ✕ | ✕ |
| Live answer seven days a week | ✓ | ✕ | ✓ |
| Every major brand, gas or electric | ✓ | ✓ | ✕ |
| Independent, no manufacturer quotas | ✓ | ✕ | ✓ |
| Local techs who know the housing stock | ✓ | ✕ | ✓ |
What every visit includes
The quote comes first, in writing
Covering 147 cities across Washington DC, Delaware, Maryland and 5 more.Phones answered by people
Open 7 days, 8:00 AM to 5:00 PM ET.All major brands serviced
Carrier, Trane, Lennox, Goodman and more. We are not an authorized dealer for any of them.HVAC repair in Herndon — quick answers
How soon can you get to my house in Herndon?
Call us and we will give you the first opening we have, and no-heat and no-cooling calls get moved up when the weather is extreme. Herndon is close in on our route, so same-day or next-day is common outside of the first hot stretch of summer and the first hard freeze of winter, when the phones stay busy.
Do you work outside Herndon if I own another property nearby?
Yes. We cover Reston, Sterling, Ashburn, Vienna, Great Falls, Chantilly and the surrounding Fairfax and Loudoun County neighborhoods, and we can look at two addresses on the same trip if they are close together. Tell us both locations when you call so we can plan the day.
What does a repair visit cost?
You approve a written quote before any work starts: visit, parts and labor. No surprises on the invoice.
What brands can you service?
Carrier, Trane, Lennox, Goodman, Rheem, York, Bryant, American Standard and more, gas and electric, as an independent repair company.
How it works
- Step 1
Tell us the symptom
Call or fill in the quote form. We ask what changed, when it started, and what the thermostat reads against the actual room temperature. That short conversation tells us what parts to load on the truck.
- Step 2
We diagnose on site
A technician checks the thermostat, the electrical side, airflow through the filter and coil, refrigerant behaviour and the outdoor unit. You get a plain explanation of what failed and why, before any work starts.
- Step 3
Repair and verify
We make the repair, then run the system through a full cycle and measure temperatures at the supply and return. If something upstream caused the failure, we tell you so it does not repeat.
- A real person answers
- Open 7 days
- Written quote before work starts
Why homeowners call us
- We know salt airCoastal homes lose condenser coils to salt corrosion years before inland systems do. We look for fin damage and pitted line sets on every visit, because a clean-looking unit can still be shedding capacity from the outside in.
- Humidity is part of the jobHurricane-season air loads a system in ways a temperature reading will not show. If your house feels clammy at 74 degrees, we look at run times, airflow and drainage rather than just adding refrigerant and leaving.
- Crawlspace realitiesHigh water tables mean wet ground under ductwork, rusted plenums and condensate lines with nowhere good to drain. We check what is happening under the floor, since that is often where comfort problems actually begin.
- Straight answersWe tell you what failed, what it will take to fix, and whether a repair makes sense on an older system. No pressure to replace something that has honest years left in it, and no vague diagnosis.
- All major brands, gas & electricIndependent service on Carrier, Trane, Lennox, Goodman, York and the rest.
- Straight answersWhen a replacement beats a repair, we tell you, sometimes before we roll a truck.
What we cover in Herndon
A failing system does not get cheaper by waiting
A part on its way out usually takes something more expensive with it. Getting started takes about a minute.
- A real person answers
- Open 7 days
- Written quotes
- All major brands
- Gas & electric
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