Smart Thermostat Installation

Smarter comfort, lower bills.

Smart thermostat installation across the Inland Empire & LA County — compatibility check, clean wiring and full app setup so you save energy from day one.

Call 626-777-4822 Schedule service

Same-day appointments most days · Open Mon–Sun · 8:00 AM – 6:00 PM.

Alex Air & Heating technician performing smart thermostat installation in the Inland Empire & LA County

Same-day

Service available across the Inland Empire & LA County — call early and we'll do everything we can to get a tech out today.

Residential & Commercial

A smart thermostat learns your schedule and optimizes your comfort while cutting energy waste. We install and configure your smart thermostat, ensure it's compatible with your system, and walk you through the app so you get the most out of it.

What's included

Compatibility check & wiring
App setup & scheduling
Energy-saving configuration
Works with all major smart brands

Why choose Alex Air & Heating

Licensed & Insured

Honest, Upfront Pricing

Same-Day Service

Satisfaction Guaranteed

Backed by our warranty

Labor warranty 3 Years · Parts warranty 5 Years · Compressor warranty 7 Years. No hidden fees — you approve the price before we begin.

Why choose Alex Air & Heating

What you actually get when you call us.

Same-day appointments.

Call during business hours and we'll do everything we can to get a technician out the same day — with a real arrival window, not an all-day wait.

Upfront pricing, no surprises.

We diagnose, quote, and explain — then you decide. You approve the price before any work begins, with no hidden fees at the end.

Every make & model.

Our licensed technicians service all major HVAC brands, and our trucks are stocked to finish most repairs in a single visit.

How it works

Four steps. No surprises.

You call

Reach us at 626-777-4822. We'll book your appointment and share a real arrival window — not an all-day block.

We diagnose

A full system inspection — refrigerant, electrical, airflow and controls — to find the real root cause, not just the symptom.

You approve

You get an upfront, flat price before any work starts. Repair or replace? We give you the honest numbers.

We fix it

Most repairs are completed on-site the same visit. We test everything, clean up, and confirm your system is running right before we leave.

Related services

Round out your home comfort.

Popular services and plans homeowners pair with this one.

Maintenance Membership

Just $199 per system per year — an annual tune-up, 10% off all repairs, no overtime fees and free filters.

See membership perks

Good to know

Smart Thermostat Installation FAQs

Most modern HVAC systems are compatible. We verify compatibility and handle any wiring (like a C-wire) needed for a clean installation.

Yes — by learning your schedule and adjusting automatically, a smart thermostat can reduce energy waste and lower your bills.

No problem — we handle any wiring needed, including adding a C-wire, for reliable operation.

We install and configure all major smart thermostat brands, including Google Nest.

Service area

Serving the Inland Empire & LA County.

Serving the Inland Empire, Los Angeles County & Surrounding Areas

Check your address

Do we cover your ZIP?

Not sure if you're in our area? Enter your ZIP above — we cover most of the Inland Empire & LA County.

Licensed & insured technicians
Honest, upfront pricing — no hidden fees
Same-day appointments often available

Prefer to talk? Call 626-777-4822

Where we workDon't see your city? Just ask.

19 cities across 4 regions

OntarioRancho CucamongaFontanaUplandMontclairRialtoRedlandsSan BernardinoRiversideCoronaEastvaleJurupa ValleyPomonaClaremontWalnutDiamond BarRowland HeightsChinoChino Hills

Locally owned & operated

An independent local team serving the Inland Empire & LA County.

Same-day appointments

Call during business hours and we'll do everything we can to dispatch a tech the same day.

Fast response times

We answer fast and show up when we say we will.

Need smart thermostat installation?

Same-day service, honest pricing, and licensed technicians who get it right the first time.

Request Service Call 626-777-4822