Signs Your AC Needs Repair in Las Vegas

With July highs averaging 104.5°F (NOAA 1991–2020 normals), a Las Vegas AC works harder than most. Small problems tend to turn into big ones under that load. Here are the signs worth acting on, with a link to the guide for each.

1. Warm air from the vents

The system runs but the air isn't cool. Check the thermostat and filter first. More in AC blowing warm air and AC running but not cooling.

2. The outdoor unit hums but won't start

A hum with no fan, or a fan that needs a push, often points to a failed capacitor. See AC capacitor failure and AC outdoor unit not running.

3. Ice on the lines or indoor coil

Usually low airflow or low refrigerant. Turn the system off at the thermostat to let it thaw and see frozen AC coil.

4. Water around the indoor unit

A clogged condensate drain is common. See AC leaking water.

5. The breaker keeps tripping

Reset it once. If it trips again, leave it off and schedule a visit. See AC tripping breaker.

6. New or loud noises

Grinding, screeching or banging. See AC making loud noise.

7. Odd smells

Musty smells are often moisture in the system (AC smells musty). A hot plastic or electrical smell means turn the system off at the thermostat and schedule a visit.

8. It can't keep up on hot afternoons

Some temperature rise on a 110°F day is normal. A home that keeps getting warmer is not. See AC not keeping up.

Getting it fixed

See our AC repair in Las Vegas page. Colton services homes across the valley, including Spring Valley, Rhodes Ranch and 89148. If the summer is over, our AC care after a long Las Vegas summer guide helps you catch wear before next year.

Colton Air Conditioning is open Monday–Friday, 8am–5pm, and is 5.0 on Google. Call (702) 738-6976. NV license 0092120.

FAQ

What are the most common signs my AC needs repair?

Warm air from the vents, an outdoor unit that hums but won't start, ice on the lines, water around the indoor unit, a breaker that keeps tripping, and new loud noises.

Is it safe to keep running an AC that's making a strange noise?

Turn it off at the thermostat if you hear grinding, screeching or banging, or smell something electrical. Running it can turn a small repair into a larger one.

Why do capacitors fail so often in Las Vegas?

Heat. Capacitors sit in the outdoor unit, and months of 100°F+ afternoons shorten their life.

How many times should I reset a tripped AC breaker?

Once. If it trips again, leave it off and schedule a visit.

What hours is Colton open?

Monday through Friday, 8am to 5pm.