Homeowners' pick for heating and cooling across Virginia and the Mid-Atlantic
HVAC Repair in Herndon, VA — Local Techs, One Call
If your system quit last night, call us and we will get a technician out to look at it. We handle HVAC repair in Herndon on heat pumps, gas furnaces, straight cool AC systems and the ductwork running through vented crawlspaces and tight attics. Herndon summers stay humid well into September, which is when weak systems start short cycling and rooms over the garage stop keeping up. Tell us what the thermostat reads, what you hear from the outdoor unit and how long it has been going on. We will tell you what we think it is before we drive out.
Call (888) 365-6280- A real person answers
- Open 7 days
- Written quote before work starts
Taking calls until 5:00 PM ET
What is your system doing in Herndon?
Find your service below, or skip it and describe the problem by phone.
One heating and air conditioning company for the whole system, from air conditioner repair to furnace replacement and seasonal maintenance.
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 full system replacements for Herndon homeowners, and the fastest way to get on the schedule is to call or send us a message with what your system is doing. Herndon runs the range from 1960s and 70s split-levels and colonials off Elden Street to newer townhouses near the Metro, and each one fails differently. The older houses often have ducts running through a vented crawlspace, so July humidity condenses on cold metal and you end up with damp air upstairs even when the AC is running. Summers here sit in the low 90s with dew points that make a system work harder than the thermostat suggests. Winters bring enough nights in the teens to find every weak igniter and cracked flame sensor. If you smell gas, leave the house first, call 911 or the gas utility, then call us. Otherwise, check your filter and breaker and let us know what you find.
Most of Herndon runs from postwar frame houses near the old town center to the big waves of brick and siding colonials, split levels and townhouses built as Dulles and the tech corridor grew. Expect ducts in crawlspaces and attics, original returns that are undersized, and additions that never got balanced for humid summers.
Our vans run Route 28, Route 7, Dulles Toll Road and Elden Street most days.
Herndon ZIPs & nearby cities we cover
From Herndon we also cover Reston, Sterling, Ashburn, Great Falls, Vienna, Chantilly and Fairfax.
- 20121
- 20122
- 20151
- 20153
- 20170
- 20171
- 20172
- 20190
- 20191
- 20192
- 20194
- 20195
Herndon areas we cover
- Downtown Herndon
- Kingston Chase
- Franklin Farm
- McNair Farms
- Dulles Park
- Folly Lick
- Sugarland Run
- Chandon
- Van Buren Village
- Herndon Chase
Nearby cities we also cover
- Reston
- Oak Hill
- heating and cooling in Sterling
- Chantilly heating and cooling
- South Riding
- Ashburn heating and cooling
- Oakton
- Tysons
How we compare to other HVAC companies in Herndon
| James River 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 company, nobody's quota | ✓ | ✕ | ✓ |
| Local techs who know the housing stock | ✓ | ✕ | ✓ |
What you get on every job
The quote comes first, in writing
Covering 171 cities across Washington DC, Delaware, Maryland and 5 more.A real person answers
Open 7 days, 8:00 AM to 5:00 PM ET.Every major brand, gas and electric
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 Herndon home?
Call us with your address and a short description of the problem and we will give you the next available window rather than a vague promise. Heat and cooling failures during a Herndon heat wave or a hard freeze get moved up, and we tell you honestly if the day is already full.
Do you work outside Herndon proper?
Yes. We take calls throughout the surrounding towns including Reston, Sterling, Ashburn, Vienna and Fairfax, and we cover homes across Virginia and neighbouring states. If you are unsure whether your street is in range, ask when you call and we will tell you straight.
How does pricing work?
We put the whole number in writing before touching the machine, so the invoice never surprises you.
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 form and describe what changed. Warm air, short cycling, a smell, water near the indoor unit. Details like that help us load the right parts before we leave.
- Step 2
We diagnose the whole system
We check the thermostat, the indoor unit, the outdoor unit and the ductwork, including runs in crawlspaces where damp air and loose joints quietly cause weak airflow and long run times.
- Step 3
You approve the fix
We explain what failed, what it takes to repair it, and what we would watch next season. Nothing gets replaced without your yes, and we clean up before we leave.
- A real person answers
- Open 7 days
- Written quote before work starts
Why homeowners call us
- Humidity is our home groundMuggy summers and damp shoulder seasons drive most of the calls we take. We look at moisture and airflow together, not the cooling number alone, because a clammy house often means a sizing or duct problem.
- Crawlspace ducts get checkedOlder homes across the region run supply ducts through vented crawlspaces. Crushed flex, disconnected boots and soaked insulation show up constantly, and we get under the house to look instead of guessing from the register.
- Heating and cooling bothSame crew for air conditioning repair in July and heating repair in January. We know how your furnace, heat pump and air handler share ducts and a blower, so one visit covers the whole system.
- Plain talk on repair or replaceWhen a repair makes sense, we repair it. When a system is failing in ways that will keep costing you, we say so and explain why, then leave the decision with you and your timeline.
- All major brands, gas & electricCarrier, Trane, Lennox, Goodman, Rheem, York and more, as an independent company.
- Straight answersIf a system is not worth repairing, we say so, often right on the phone.
What we cover in Herndon
Small faults get expensive on their own schedule
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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