Based in Leesburg, VA

AC Repair in Gaithersburg, MD

AC repair in Gaithersburg, MD for central air, heat pumps and ductless systems, with the same rate at any hour.

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Cooling Back On, Without the Guesswork

Brick Street Plumbing Heat & Air offers AC repair in Gaithersburg, MD every day of the year, at any hour, with no overtime fees. When a central air conditioner stops cooling, the cause is usually one of a short list: a failed capacitor, a contactor that has burned out, a frozen or dirty evaporator coil, low refrigerant from a leak, a clogged condensate drain, or a compressor that will not start. Our licensed HVAC technicians test the system piece by piece, show you what failed, and explain the fix before any work begins.

Gaithersburg summers in Montgomery County are hot and humid, and an air conditioner here does two jobs at once: it lowers the temperature and pulls moisture out of the air. When either job falls short, the house feels sticky even with the thermostat set low. Homes range from older split-levels and colonials to newer planned neighborhoods such as Kentlands and Lakelands, plus plenty of townhomes, so we see every kind of equipment. Our HVAC team in Gaithersburg handles repair, maintenance and heating work as well.

Where AC Failures Usually Start

The parts we test first on a Gaithersburg repair call, and what each one does when it goes bad.

Run capacitor

It gives the compressor and fan motor the boost they need to start. A weak one causes humming, clicking or an outdoor fan that will not spin.

Evaporator and condenser coils

Dirt on either coil cuts cooling and can freeze the indoor coil solid. A cleaning restores airflow and heat transfer.

Compressor

The heart of the system. We check whether it is truly failed or simply not getting the signal or power to start.

Refrigerant charge

An AC does not use up refrigerant. If it is low, there is a leak, and we look for it instead of just topping it off.

Condensate drain

Humid weather sends a lot of water down this line. A clog can trip a float switch and shut the system off or leak through a ceiling.

Thermostat and controls

Wiring faults and thermostat problems can mimic a broken AC. We rule them out early so you do not pay for parts you do not need.

THE BIG DECISION

Repair or Replace Your Air Conditioner?

Most AC calls end in a repair. Capacitors, contactors, fan motors and drain lines are normal wear items, and fixing them gives the system a lot more life. Replacement starts to make sense when the compressor has failed on an older unit, when the system uses an outdated refrigerant that has become hard to get, or when you have paid for several repairs in a couple of seasons and the house still is not comfortable. In those cases we explain both paths honestly and help you compare them. If you choose new equipment, our AC installation team sizes the system for the house rather than matching the old unit by default.

BEFORE YOU CALL

Three Checks That Take Two Minutes

First, look at the thermostat. Make sure it is set to cool, the set point is below room temperature, and the screen is not blank from dead batteries. Second, check the breaker panel and the disconnect box near the outdoor unit. A tripped breaker that trips again right after you reset it means an electrical fault, so leave it off and call us. Third, pull the air filter. If it is gray and matted, replace it, let the system rest for an hour in case the coil has iced over, then try again. If none of that brings the cold air back, it is time for a technician.

Hot House in Gaithersburg?

A licensed technician is a phone call away, day or night.

Call (240) 969-4911 to schedule. You can also read about our AC repair service or see every community in our service area.

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(240) 969-4911

Based in Leesburg, VA.

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Frequently asked questions

Why is my AC running but not cooling my Gaithersburg house?

The most common reasons are a dirty air filter, a frozen evaporator coil, a failed capacitor that has stopped the outdoor unit, or low refrigerant from a leak. Start by checking the filter and making sure the outdoor fan is spinning. If the fan is still and you hear humming, turn the system off to protect the compressor and call a technician. Running it that way for hours can turn a small repair into a large one.

Who does HVAC repair in Gaithersburg, MD after hours?

Brick Street Plumbing Heat & Air is available 24/7 for heating and cooling repair in Gaithersburg, and we do not charge overtime fees. A call at 11pm costs the same as a call at noon. Our technicians are licensed HVAC professionals and are factory-certified on the equipment they install, so they work on air conditioners, heat pumps, furnaces and ductless systems.

How do I know if my AC capacitor is bad?

Typical signs include a humming outdoor unit with a fan that does not turn, an AC that takes several tries to start, or a system that shuts off soon after starting. Sometimes the top of the capacitor is visibly swollen. Capacitors hold an electrical charge even with the power off, so this is not a safe homeowner repair. A technician can test it with a meter and replace it if it is out of range.

Why is there water leaking from my air handler?

In most cases the condensate drain line is clogged, or the drain pan has cracked. In humid Gaithersburg summers the system removes a lot of moisture, and algae or debris in the line can back it up quickly. A frozen coil melting off can also overflow the pan. Turn the system off, put towels down, and call for service. Clearing the line and adding a safety float switch can prevent ceiling damage next time.

Can you repair a heat pump that is not cooling?

Yes. A heat pump cools the same way a central air conditioner does in summer, so many of the same parts fail: capacitors, contactors, fan motors and refrigerant lines. Heat pumps also have a reversing valve that can stick in heating mode. We diagnose both functions, since a problem in cooling season can show up again when winter arrives. Our heat pump technicians handle repair, maintenance and replacement.

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