Air Conditioning Repair in New Hampshire

Air Conditioner Repair for New Hampshire Homes

New Hampshire summers are short, but a hot, humid week with a broken air conditioner feels long. Courtesy Heating and Cooling repairs central air conditioners and the cooling side of heat pump systems for homeowners across Southern, Seacoast and Lakes Region New Hampshire. This page covers repairs. For an overview of everything we do for cooling, including tune-ups and new systems, see our air conditioning service page.

Call (603) 777-7749 or use the Schedule An Appointment button above.

Signs Your Air Conditioner Needs Repair

• Warm or lukewarm air from the vents while the system is running
• The outdoor unit won’t start, or it hums without the fan turning
• Ice on the refrigerant lines or on the indoor coil
• Water around the indoor unit, furnace or air handler
• Short-cycling, where the system turns on and off every few minutes
• New noises such as buzzing, banging, squealing or grinding
• Weak airflow or rooms that never cool down
• The house feels damp or clammy even when the AC is on

Common AC Repairs We Handle

Most air conditioner breakdowns come down to a handful of parts. We test the electrical components, refrigerant circuit and airflow so we fix the actual cause, not just the symptom.

• Capacitors and contactors. These electrical parts help start the compressor and fan motor, and they are among the most common failures in hot weather.
• Refrigerant leaks. Low refrigerant means there’s a leak somewhere. We look for the leak and explain repair options instead of simply adding refrigerant.
• Frozen evaporator coils. Usually caused by a clogged filter, poor airflow or low refrigerant. We find out which one.
• Clogged condensate drains and failed pumps. These cause water leaks and can trip a safety switch that shuts the system off.
• Fan motors and blower problems in the outdoor unit or the indoor furnace or air handler.
• Dirty condenser coils that make the system run longer and work harder.
• Thermostat and control wiring problems, including low-voltage wiring damaged outdoors.
• Compressor problems. When a compressor fails, we’ll talk through whether repair or replacement makes more sense.

What to Check Before You Call

A few quick checks can sometimes get your system running again, or at least help us diagnose it faster:

• Make sure the thermostat is set to Cool and below the room temperature, and replace its batteries if it uses them.
• Check the breakers for the indoor unit and the outdoor unit, plus the disconnect switch near the outdoor unit.
• Look at the air filter. A badly clogged filter can freeze the coil and cut airflow.
• Clear leaves, grass clippings and anything else crowding the outdoor unit.
• If you see ice, turn the cooling off and run only the fan so the coil can thaw before we arrive.

If a breaker trips again after you reset it, leave it off and call us.

Repair or Replace?

Repair is usually the right call when the system is in good overall shape and the problem is a single part. Replacement starts to make sense when an older system needs a major repair, uses an older refrigerant that is costly to service, or keeps breaking down. We’ll give you an honest assessment and the details on both paths, and if replacement is the better choice, our air conditioning installation page explains the process. Many homeowners also look at a cold-climate heat pump, which cools in summer and heats in winter.

Heat Pumps and Mini-Splits

If your cooling comes from a heat pump or a ductless mini-split, see our heat pump repair and mini-split repair pages. The symptoms are similar, but those systems also heat your home, so a problem can show up in both seasons.

Prevent the Next Breakdown

A spring tune-up lets us clean the coils, check refrigerant pressures and electrical parts, and clear the condensate drain before the hot weather arrives. Learn more on our air conditioning maintenance page, and ask about our $50 Off Maintenance offer.

Current Repair Offers

Ask about our Free Diagnostic With Repair and 15% Off Repairs offers when you schedule. Mention the offer to your technician at the time of service. See special offers for details.

AC Repair Across Our Service Area

We repair air conditioners in Exeter, NH, Portsmouth, NH, Dover, NH, Manchester, NH, Nashua, NH, Concord, NH and Wolfeboro, NH, along with the other towns listed below. For urgent problems outside office hours, see our emergency HVAC service page.

Frequently Asked Questions

Why is my air conditioner running but not cooling?

Common causes include a clogged filter, a frozen coil, a failed capacitor or fan motor at the outdoor unit, or low refrigerant from a leak. A technician can test the system and find the cause.

Why is there ice on my AC lines?

Ice usually points to restricted airflow or low refrigerant. Turn the cooling off and run the fan to let it thaw, check the filter, and schedule service if it comes back.

Why is water leaking from my indoor unit?

The most common cause is a clogged condensate drain line or a failed condensate pump. A frozen coil that thaws can also leave water on the floor.

Do you repair heat pumps that cool my home?

Yes. We repair central air conditioners, heat pumps and ductless mini-splits.

Do you offer any AC repair discounts?

Yes. Ask about Free Diagnostic With Repair and 15% Off Repairs when you schedule.

Schedule AC Repair

Call (603) 777-7749, book online, or contact us to schedule air conditioning repair.