Local ac repair for San Mateo homes & businesses
Your San Mateo appointment is handled by our Mountain View team, about 18 miles away, rated 5.0★ by 23 customers on Google. Many Peninsula and South Bay homes have built-in and premium appliances — Sub-Zero, Wolf, Thermador, Miele, Viking — which we service every day.
Our process is simple: diagnose, quote, repair, test. You approve the price before any work begins.
Our HVAC technicians repair central AC systems, heat pumps and mini-splits — capacitors, contactors, fan motors, thermostats, drain lines and more.
Air conditioner problems we fix in San Mateo
- AC blowing warm air
- System won’t turn on
- Frozen coil or ice on lines
- Water leaking from the indoor unit
- Short cycling
- Loud noises from the outdoor unit
- High energy bills
Your nearest ZR MASTER location
ZR Master Appliance Repair & HVAC
505 Central Avenue, Unit E, Mountain View, CA 94043
(650) 943-3696 · Open 24 hours
About 18 miles from San Mateo
5.0 (23 Google reviews)
View service region505 Central Avenue, Unit E, Mountain View, CA 94043
(650) 943-3696 · Open 24 hours
About 18 miles from San Mateo
5.0 (23 Google reviews)
ZIP codes served in San Mateo: 94401, 94402, 94403
Frequently Asked Questions
Do you offer ac repair in San Mateo, CA?
Yes. ZR MASTER provides ac repair throughout San Mateo (ZIP codes 94401, 94402, 94403) and nearby communities. Call (650) 943-3696 or book online.
How soon can a technician come to San Mateo?
Same-day and next-day appointments are often available depending on the schedule. Booking online or calling early in the day gives you the best chance of a quick visit.
Why is my AC blowing warm air?
Common causes are a dirty filter, a tripped breaker, a failed capacitor or contactor, low refrigerant or a failing compressor.
How often should I change my AC filter?
Every 1–3 months during cooling season.
AC Repair in nearby cities
BelmontSan CarlosRedwood CityAthertonMenlo ParkEast Palo AltoPalo AltoNewarkLos Altos HillsLos Altos
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