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AC Not Cooling in San Mateo, CA

If your air conditioner is not working or the vents are pushing room-temperature air, call us before the house heats up. Our San Mateo technicians carry the parts that fix the most common reasons an AC stops cooling, so most homes are cold again the day you call.

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HomeLocationsSan Mateo, CA › AC Not Cooling

AC not cooling repair in San Mateo: what we fix

The most common reasons an air conditioner stops cooling are low refrigerant from a leak, a failed run capacitor that keeps the compressor or fan from starting, a frozen evaporator coil from restricted airflow, a dirty condenser coil that cannot reject heat, or a tripped float switch in the condensate drain. Each has a different fix, and each is one we handle every day.

Call for AC not cooling repair if you notice

  • Fan runs but air from the vents is warm
  • Outdoor unit fan not spinning
  • Ice on the indoor coil or refrigerant lines
  • AC turns on then shuts off within minutes
  • Thermostat set to 72 but house stays at 80
  • Hissing or bubbling sound near the indoor unit

Why San Mateo homeowners choose us

  • 24 hour emergency service in San Mateo, including weekends and holidays
  • Diagnosis explained in plain language, with photos when useful
  • Parts for the most common failures carried on every truck
  • One company for AC, heating, ductwork and thermostats
  • Maintenance plans that put you first in line during heat waves
  • Straight answers, fair prices, and we show up when we say we will

AC not cooling repair near me in San Mateo, CA

Neighbors in San Mateo looking for "AC not cooling repair near me" call us because we answer, we arrive on time and we fix the problem on the first visit whenever parts allow. We serve every street in San Mateo and the nearby towns listed below.

We also handle AC not blowing cold air, air conditioner not working, AC not cooling house, AC blowing warm air, air conditioner not cooling for San Mateo homes and businesses, and serve the nearby communities of Burlingame, Foster City, Hillsborough, Belmont, Millbrae, San Carlos. If you are not sure what your system needs, call and describe the problem. Our dispatcher will book the right technician.

How AC not cooling repair works

Call or book online

Tell us what the system is doing. Our dispatcher gives you an honest arrival window, often the same day.

Diagnosis on arrival

The technician tests the system, shows you what failed and explains why in plain language.

Flat price, your approval

You get a written price for the repair before any work begins. No hourly surprises.

Repair and verify

We fix it, test the system under load and leave the work area clean.

San Mateo customers on our AC not cooling repair

★★★★★

Our AC quit during the hottest week of the year and they had a technician at our San Mateo home the same afternoon. Fixed a capacitor, charged exactly what was quoted. Cold air within an hour.

Maria G., San Mateo
★★★★★

Our restaurant rooftop unit died on a Friday lunch. They came out that afternoon and had us cooling again before the dinner rush. Lifesavers for a business in San Mateo.

Robert M., San Mateo
★★★★★

Called at 10 pm on a Saturday with no heat and someone actually answered. The furnace was running again before midnight. Cannot recommend them enough for anyone in San Mateo.

David R., San Mateo

AC Not Cooling in San Mateo: frequently asked questions

Why is my AC running but not cooling?

Most often low refrigerant, a frozen coil, a bad capacitor or a dirty condenser coil. A technician can pinpoint which in about 20 minutes.

Can I just add refrigerant myself?

No. Refrigerant is a regulated substance, and low charge means there is a leak that will drain a new charge just as fast. We find and repair the leak first.

How quickly can you come out?

Same-day service is available across San Mateo in most cases, and 24/7 emergency dispatch is always on.

AC Not Cooling service area: San Mateo, CA

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Call (855) 459-5498 now for AC not cooling repair in San Mateo. We are available 24 hours a day, and most same-day requests are on the schedule within minutes of your call.

Need AC not cooling repair in San Mateo, CA right now?

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