Call or text (408) 497-0444 · Upfront pricing
5.0 from 215 Google reviews

Smart Thermostat Installation and Setup in the South Bay

Nest, Ecobee, or Honeywell, installed, wired, and set up right by the Morgan Hill team that would rather fix your thermostat than sell you one you don’t need.

Licensed & insured, CA CSLB #935704 · All brands · Financing available

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Replacement estimates are free · repair visits start with a $110 diagnostic
5.0 · 215 Google reviewsYelp · 178 reviews
5.0215 Google reviews
7,000+completed jobs
17 yrsfamily-run since 2009
$0replacement estimates

Smart Thermostats, Installed and Set Up Right

A smart thermostat should make your home more comfortable and cut your energy bills, not blink offline every few days because it never had steady power. Modern Air installs Nest, Ecobee, and Honeywell thermostats across the South Bay, wires them correctly, and sets them up so they actually do their job. We have handled comfort calls like yours from our Morgan Hill office since 2009.

The C-wire, done properly

Most smart thermostats want a common wire, or C-wire, for continuous power. Many older South Bay homes were never wired with one, which is why a new thermostat can seem to work and then keep losing connection. We run a real C-wire or install the right adapter, so your thermostat stays powered and online.

We’ll fix it before we replace it

A homeowner once called us to install a brand-new thermostat because the old one had quit. Our technician found the previous install had been wired wrong, corrected it, and got the existing thermostat working, so there was no new unit to buy and the bill was smaller. That is how Modern Air works: we recommend only what you actually need, and our technicians are never paid to upsell.

Compatible with your system

Not every thermostat suits every system, especially with heat pumps, dual-fuel setups, or zoning. We check compatibility first, help you choose the right model, and make sure it controls your equipment correctly. Then we connect it to your Wi-Fi, set your schedule, and show you the app before we go.

Backed by the same standard

Thermostat work carries the same upfront pricing and the same warranty standard as the rest of what we do. Whether it is a quick swap or a wiring fix, you get honest advice and a price before we start, and our HVAC cost breakdown covers where thermostat work sits against everything else. Call or text Modern Air at (408) 497-0444 to get your smart thermostat installed right.

How it works

A Simple, Transparent Process

Call or text us

(408) 497-0444, or send the form and we reach out the same day.

Same-day diagnosis

A local, background-checked tech finds the problem and quotes it upfront.

Fixed right, guaranteed

Clear pricing before work starts. Financing if you need it.

Brands we service

All Major HVAC Brands

Reviews

What South Bay Customers Say

5 star review.

“Billy was great. Checked everything out and explained what the problem was. Cleaned up the parts. Didn’t try and upsell me. And programed my thermostat. Highly recommend!!!”

Joe L.Morgan Hill · Thermostat installation
5 star review.

“So prompt and helpful! We are so relieved that our furnace problem was fixed with a new thermostat!”

Connie R.Gilroy · Thermostat installation
5 star review.

“Very responsive, timely, professional and friendly. I will call them with any HVAC issues”

Dennis S.Gilroy · HVAC service

Read all 393 reviews from South Bay homeowners →

Service area

Cities We Serve

FAQ

Frequently Asked Questions

Do I need a C-wire for a smart thermostat?

Many smart thermostats need a common wire, or C-wire, for steady power, and older homes often do not have one. We run a proper C-wire or fit an adapter so your Nest or Ecobee works reliably instead of dropping offline.

Which smart thermostats do you install?

All the major ones, including Nest, Ecobee, and Honeywell. We help you pick the model that fits your system and your home, and we make sure it is compatible with your equipment before we install it.

Can you just fix my current thermostat instead of selling me a new one?

Often, yes. Plenty of thermostat problems come down to wiring or a bad connection, not a dead unit. If your existing thermostat can be made to work, we would rather do that and save you the cost.

Will you set up the schedule and app for me?

Yes. We install the thermostat, connect it to your Wi-Fi, walk you through the app, and set up a heating and cooling schedule so it is working the way you want before we leave.

How much does thermostat installation cost?

It depends on your system and whether any wiring is needed, so we give you an upfront price after we see the setup. It is a small job compared with most HVAC work, and we never guess over the phone.

Free replacement estimates · No obligation

Schedule Your Free Estimate Today

Call, text, or send the form, a local technician gets back to you the same day.

Call or Text (408) 497-0444
Family-run since 2009 · CA CSLB #935704 · Trane, Lennox, Carrier, Mitsubishi, Daikin, Rheem, Goodman, American Standard & more
Call or Text (408) 497-0444