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Thermostat Repair & Smart Thermostat Installation in San Mateo, CA

Thermostat repair and smart thermostat installation in San Mateo. A thermostat that reads wrong, loses its schedule or will not talk to the system can make a perfectly good furnace or AC seem broken. We repair and replace thermostats and install Nest, ecobee, Honeywell and other smart models across San Mateo.

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Home › Locations › San Mateo, CA › Thermostat Repair & Smart Thermostat Installation

Thermostat service in San Mateo: what we fix

Thermostat issues range from dead batteries and loose wiring to failed control boards and incompatible smart thermostats wired without a common wire. We verify the wiring, confirm the thermostat is right for your equipment (single-stage, multi-stage, heat pump with auxiliary heat) and set up schedules that actually save energy.

Call for thermostat service if you notice

  • Thermostat screen blank or unresponsive
  • Room temperature does not match the display
  • System will not turn on or will not turn off
  • You want to control heating and cooling from your phone
  • Old mercury or dial thermostat
  • Heat pump or two-stage system needs a compatible control

Why San Mateo homeowners choose us

  • Local technicians who know San Mateo homes and their systems
  • A real person answers the phone, day or night
  • Written quotes, no hourly surprises
  • Repairs on all brands, all ages, all fuel types
  • Financing available on new systems
  • Every job backed by our workmanship guarantee

Thermostat service near me in San Mateo, CA

If you typed "thermostat service near me" from San Mateo, this is the page for you. Our technicians work San Mateo neighborhoods daily and know the equipment common to homes here, from attic split systems to rooftop packaged units, so diagnosis is fast and repairs are done right.

We also handle smart thermostat installation, thermostat not working, Nest thermostat install, ecobee installation, thermostat replacement 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 thermostat service 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 thermostat service

★★★★★

Two other companies told me I needed a whole new system. These guys found a refrigerant leak, repaired it and my 8-year-old unit is cooling like new. Honest people.

Jennifer L., San Mateo
★★★★★

Straightforward pricing, no upsell, and the technician clearly knew heat pumps inside and out. Our system is finally heating properly.

Michael B., San Mateo
★★★★★

They sealed and repaired our attic ducts and the back bedrooms are finally the same temperature as the rest of the house. Should have done this years ago.

Rachel S., San Mateo

Thermostat Repair & Smart Thermostat Installation in San Mateo: frequently asked questions

Can you install a Nest or ecobee on my system?

Almost always, yes. Some systems need a C-wire or adapter, which we install during the visit.

Why does my thermostat say 72 but the house feels cold?

Poor thermostat placement, a miscalibrated sensor or airflow problems. We check all three.

Will a smart thermostat save money?

Most homeowners in San Mateo see 8 to 15 percent lower heating and cooling costs from scheduling alone.

Thermostat Repair & Smart Thermostat Installation service area: San Mateo, CA

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Ready for thermostat service in San Mateo? Call (855) 459-5498 any time, day or night. A real person will answer, take your details and dispatch the nearest technician.

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