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AC Repair in Gaithersburg, MD
Fast air conditioner repair for every brand — refrigerant leaks, bad capacitors, failed compressors, blower motors and thermostat faults.
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📍 Gaithersburg, MD · Open 24 Hours
AC Repair & Heating Repair in Gaithersburg, MD
Emergency Heating & Cooling Service — air conditioning repair, furnace repair, heat pump service, installation and 24/7 emergency HVAC repair for homes throughout Gaithersburg and nearby Glen Burnie, Glenn Dale, Great Mills, Hagerstown, Hampstead, Jefferson.
✅ Licensed & Insured
⏰ Same-Day Service💰 Upfront Pricing
❄ All Makes & Models🕑 24/7 Emergency
Local HVAC Contractors in Gaithersburg
Gaithersburg, MD Air Conditioning, Heating & HVAC Repair
Need an HVAC company in Gaithersburg, MD that actually answers the phone? We match you with vetted, independent Gaithersburg HVAC contractors for air conditioner repair, furnace repair, installation and emergency service. Free estimates, no obligation, and technicians who explain the problem in plain English.
Because dispatch is local to Gaithersburg, response windows are short. Technicians carry the parts that fail most often, so the majority of Gaithersburg AC repair and furnace repair calls are finished the same day the appointment is made.
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AC & Cooling
Central air repair, AC service, compressor and coil work, refrigerant leak repair, new AC installation and replacement in Gaithersburg.
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Heating & Furnaces
Furnace repair and service, no-heat calls, heater repair, boilers, electric heat, heat pumps and furnace installation in Gaithersburg.
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Emergency & Same Day
24 hour AC repair and emergency heating repair in Gaithersburg — nights, weekends and holidays, with same-day HVAC repair when it matters.
Emergency AC & Heating Repair in Gaithersburg — 24/7
No cooling in dangerous heat? No heat in freezing weather? Water pouring from the air handler, a breaker that keeps tripping, or a burning smell? Do not wait for business hours. Emergency HVAC repair in Gaithersburg is dispatched around the clock.
Complete HVAC Services
Every HVAC Service We Cover in Gaithersburg, MD
Air conditioning, heating, ventilation, ductwork and indoor air quality — repair, replacement, installation and maintenance for Gaithersburg homes and small businesses.
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AC Installation & Replacement in Gaithersburg, MD
New high-efficiency central air systems, condenser and coil replacement, right-sized load calculations and honest upfront pricing.
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Central Air Repair in Gaithersburg, MD
Whole-home central air diagnostics — weak airflow, warm air from vents, tripping breakers, frozen evaporator coils and duct leaks.
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Heating Repair in Gaithersburg, MD
No heat? We diagnose and repair furnaces, heat pumps, boilers and electric heat — usually same day, including nights and weekends.
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Furnace Repair in Gaithersburg, MD
Ignitor and flame-sensor faults, short cycling, blower failures, cracked heat exchangers, gas valve and control board repairs.
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Furnace Installation & Replacement in Gaithersburg, MD
Gas, propane and electric furnace replacement with proper venting, combustion testing and efficiency upgrades up to 98% AFUE.
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HVAC Repair in Gaithersburg, MD
One call for heating and cooling repair — licensed HVAC contractors who service the whole system, not just one part of it.
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24/7 Emergency HVAC Repair in Gaithersburg, MD
24 hour AC repair and emergency heating repair, seven days a week — same-day dispatch when your home is unsafe or unbearable.
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Heat Pump Repair & Installation in Gaithersburg, MD
Heat pump not heating or cooling, stuck in defrost, iced-up outdoor unit, reversing valve and inverter board repairs.
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AC Compressor Repair in Gaithersburg, MD
Hard-start kits, capacitors, contactors, locked rotors and full compressor replacement — with a straight repair-or-replace answer.
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AC & Furnace Tune-Up in Gaithersburg, MD
Seasonal maintenance that prevents breakdowns: coil cleaning, refrigerant check, safety and combustion tests, filter and drain service.
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Ductless Mini-Split Service in Gaithersburg, MD
Mini-split repair, deep cleaning, line-set work and new multi-zone installations for additions, garages and older homes.
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Thermostat Repair & Installation in Gaithersburg, MD
Blank screens, wiring faults, and smart thermostat installation and setup that actually works with your equipment.
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Air Ducts & Indoor Air Quality in Gaithersburg, MD
Duct sealing and repair, air duct cleaning, humidifiers, dehumidifiers, UV lights and high-MERV filtration for cleaner air.
Learn about Air Ducts & Indoor Air Quality →Common Problems
Gaithersburg HVAC Problems We Fix Every Day
If any of these sound familiar, a Gaithersburg technician can usually diagnose it on the first visit.
AC not cooling or not blowing cold air
Warm air at the vents usually points to low refrigerant, a dirty condenser coil, a failed capacitor or a compressor that is not starting.
Air conditioner not working at all
No response from the outdoor unit is often a tripped breaker, blown fuse, bad contactor, float switch or thermostat wiring fault.
Frozen evaporator coil or ice on the lines
A frozen AC coil means restricted airflow or low refrigerant charge — running it that way can destroy the compressor.
AC making noise — buzzing, grinding, screeching
Noises tell a story: buzzing points to electrical, grinding to bearings, screeching to a failing compressor or fan motor.
Furnace not working / no heat
We check ignition, flame sensor, gas pressure, limit switches, pressure switches and the control board before recommending parts.
Furnace short cycling
Turning on and off every few minutes is usually overheating from restricted airflow, an oversized system or a failing sensor.
Water leaking around the indoor unit
A clogged condensate drain, cracked pan or frozen coil melting off will flood a closet or ceiling fast.
High bills or uneven room temperatures
Duct leakage, low charge, dirty coils and poor airflow balance quietly add 20–40% to a cooling bill.
How It Works
Getting HVAC Help in Gaithersburg Takes Three Steps
- Call (877) 816-9948. Tell us the equipment, the symptom and your Gaithersburg location. Lines are open 24/7.
- Get matched & scheduled. You are connected with an available independent Gaithersburg HVAC contractor and given an arrival window.
- Approve the price, get it fixed. The technician diagnoses the system, gives you a flat-rate written price, and completes the repair — most on the same visit.
Why Gaithersburg Homeowners Call Us
Local, Licensed, Accountable
- Real 24/7 availability — emergency AC and heating repair, not an answering machine.
- Upfront flat-rate pricing — you approve the number before work begins.
- Licensed & insured independent contractors serving Gaithersburg and all of Maryland.
- All brands serviced — Carrier, Trane, Lennox, Rheem, Goodman, American Standard and more.
- Residential and light commercial HVAC repair and installation.
- Free replacement estimates with efficiency, rebate and financing options.
Service Area
Serving Gaithersburg, MD and Surrounding Communities
Coverage includes Gaithersburg proper, its surrounding neighborhoods and subdivisions, and nearby Maryland towns. If you are just outside the city limits, call (877) 816-9948 — there is very likely a contractor covering your ZIP code.
AC & Heating Repair in Glen Burnie, MDAC & Heating Repair in Glenn Dale, MDAC & Heating Repair in Great Mills, MDAC & Heating Repair in Hagerstown, MDAC & Heating Repair in Hampstead, MDAC & Heating Repair in Jefferson, MDAC & Heating Repair in Jessup, MDAC & Heating Repair in Kitzmiller, MDAC & Heating Repair in Leonardtown, MDAC & Heating Repair in Lonaconing, MDAC & Heating Repair in Monrovia, MDAC & Heating Repair in New Midway, MD
See all Maryland service areas → | Browse all 50 states →
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Gaithersburg FAQ
Frequently Asked Questions — HVAC Repair in Gaithersburg, MD
How fast can I get AC repair in Gaithersburg, MD?
Most Gaithersburg requests are scheduled the same day, and true emergencies — no cooling in dangerous heat, no heat in freezing weather, burning smells or water damage — are dispatched around the clock, 7 days a week. Call (877) 816-9948 and you will be given a realistic arrival window before you hang up.
Do you offer 24 hour emergency heating and AC repair in Gaithersburg?
Yes. The Gaithersburg network operates 24/7, including nights, weekends and holidays, for emergency AC repair, emergency furnace repair and no-heat calls. After-hours rates are disclosed up front, before a technician is dispatched.
How much does air conditioning repair cost in Gaithersburg?
In the Gaithersburg area, common repairs such as a capacitor, contactor or condensate clog typically land between $150 and $400. Blower motors, coil work and refrigerant leak repairs run higher. Your Gaithersburg technician provides a flat-rate written price after diagnosis — you approve the cost before any work begins.
Are the Gaithersburg HVAC contractors licensed and insured?
Every contractor in the network is an independent business required to carry the license and insurance Maryland requires for the work performed. We always recommend homeowners confirm license and insurance documentation directly with the contractor before work starts.
My AC is not blowing cold air in Gaithersburg — what should I check first?
Check the air filter, confirm the thermostat is set to COOL, and look at the breaker. Then check whether the outdoor fan is spinning. If the filter is clean and the outdoor unit is silent or humming, it is usually a capacitor, contactor or refrigerant issue — that needs a licensed Gaithersburg technician with gauges.
Do you repair all brands and both heating and cooling in Gaithersburg?
Yes — Carrier, Trane, Lennox, Rheem, Goodman, American Standard, York, Bryant and every other major brand, plus gas and electric furnaces, boilers, heat pumps, central air, ductless mini-splits, thermostats and ductwork for homes and light commercial buildings throughout Gaithersburg and nearby Glen Burnie, Glenn Dale, Great Mills, Hagerstown, Hampstead, Jefferson.
Can I get a free estimate on a new AC or furnace in Gaithersburg?
Yes. Replacement quotes in Gaithersburg are free and include equipment options, efficiency ratings, a load-sizing review and available rebates or financing so you can compare fairly.
More answers on our HVAC FAQ page and in the HVAC troubleshooting blog.
Need AC or Heating Repair in Gaithersburg Today?
Licensed local HVAC contractors are standing by 24/7 for same-day and emergency service in Gaithersburg, MD.
📞 Call (877) 816-9948 — Open 24/7