Thermostat repair and replacement in Palm City

Veteran Owned Business verified member 378772025 Best of Florida Regional Award winner, Excellence in HVAC ServiceBBB Accredited Business, A+ rating

Thermostat repair can make a good AC look broken

The screen is blank, or it says 74 and the house feels like 80. A bad thermostat makes a healthy AC look broken. Thermostat repair is a cheap place to start.

We check the wiring and power first. Then we repair it, replace it, or put in a smart one.

Smart thermostats, set up right

We install compatible smart thermostats and test both heating and cooling before we leave. A smart thermostat only saves money when it's wired correctly, has a common wire where it needs one, and is programmed for how you actually live.

What the visit covers

  • Thermostat diagnostics
  • Replacement of failing thermostats
  • Smart thermostat installs
  • Wiring and common-wire fixes

Field notes

Jobs we've finished in Palm City

Aug 04, 2026 · Palm City, FL

Two Trane systems, one bad condenser, Palm City

Two Trane systems in one house, and one had stopped cooling. The fault was at its condenser. We fixed it, checked the refrigerant, and looked over both units. We told the homeowner where each one stands. Nobody tried to sell a second system.

Mar 22, 2026 · Palm City, FL

Restaurant cooling repair, Palm City

A restaurant lost its cooling. We found the problem quickly and fixed it. A hot dining room empties out fast.

Restaurant cooling repair, Palm City
Restaurant cooling repair, Palm City

Mar 18, 2026 · Palm City, FL

New R-6 ductwork, Palm City

Old ducts out, new R-6 duct in. We sealed every joint, strapped the runs so they don't sag, and reconnected the attic ducts so every room gets its air.

New R-6 ductwork, Palm City
See every job pin

What happens when you call

Tell us what the thermostat shows and what the house feels like. JD usually picks up. If he's under a house or on a roof, someone calls you back. Ask about the diagnostic fee and we'll tell you before anyone drives out.

(772) 203-2571

Next door

We run calls in the towns next door too

Same trucks, same hourly pay, same rules.

Also see the main page for this service.

Good to know

What Palm City homeowners ask us

Yes. We check the wiring and power first, then replace a failing thermostat or put in a compatible smart one and test heating and cooling before we leave.
That depends on what failed and on the equipment. We tell you the number after we look at the unit, and if replacing it is on the table, you get both numbers.
No. Everyone here is paid hourly, not on commission. When a repair will hold, that's the recommendation.
Yes. We answer 24/7. Sundays and holidays are billed at double time.

Right now

The unit is down and it's hot

(772) 203-2571

Tell us what it's doing. Blowing warm, not blowing at all, water on the floor, a noise that's new. Say how long it's been like that. We'll tell you what it sounds like and when we can be there.

Reviews

What people say after the truck leaves

4.9 stars across 167 Google reviews. Licensed and insured.

★★★★★

“It was late at night, and couldn’t get parts until the next day, but Jonathan told us what it was, got the part the next day and it was all fixed.”

Kristin CosbyGoogle review, September 2024
★★★★★

“Transparent pricing. Technicians were on time, explained everything they were doing and gave me valuable feedback.”

Nathalia AmaralGoogle review, April 2025
★★★★★

“The estimate was quick, the estimate was a good price, the part was in stock, which was fantastic. Very happy.”

The WhoGoogle review, May 2026

Read all 167 Google reviews

Licensed CAC1822339

Request Thermostat repair and replacement in Palm City

Tell us what the unit is doing and when it started. We'll call back to set a time.

(772) 203-2571

Repairs over $500 can be financed, with approved credit.

Harmony Air LLC

5173 NW Aljo Court

Port St Lucie, FL 34986

Open 24/7 · License # CAC1822339

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