Control board replacement in Stuart

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

Control board replacement, after we rule out the cheap stuff

The unit won't start, ignores the thermostat, or cycles for no reason. It can feel like the whole thing is haunted. Sometimes it needs a control board replacement.

Often it doesn't. A fuse, a relay, or a loose wire can act just like a bad board.

Boards cost more than fuses, so we test first

We check the control circuit before we order anything, because a board can cost several times what a fuse or relay does and the symptoms look almost identical. If it really is the board, we install a compatible one and confirm heating, cooling, and blower operation.

What the visit covers

  • Control circuit testing
  • Compatible board installation
  • Wiring and safety checks
  • Full startup test

Field notes

Jobs we've finished in Stuart

Oct 14, 2026 · Stuart, FL

Hot room issue, Stuart

One of the rooms was hot. The system wasn't distributing air properly. We checked the ductwork and adjusted the airflow to ensure even cooling throughout the space. Now, the room feels comfortable again.

Sep 03, 2026 · Stuart, FL

New condenser on a fresh pad, Stuart

New system, new concrete pad. We ran clean line sets, did the electrical to code, pressure tested, pulled a vacuum, and charged it. Airflow checked before we called it done. Permitted and inspected.

Aug 28, 2026 · Stuart, FL

No-cool call, fixed same day, Stuart

The house had no cooling. The problem was at the outdoor condenser, and we fixed it the same day. Then we checked the refrigerant, the amp draw, and the supply temperature. It runs quiet now.

Aug 17, 2026 · Stuart, FL

Rooftop package unit repair, Stuart

Rooftop package unit on a commercial building. We made the repair up top and tested it under load before we came down. A business can't wait a week for cold air.

See every job pin

What happens when you call

Tell us what the unit is doing, and any error lights you see. 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. We also cover North River Shores, Port Salerno, and Sewall's Point on these trips.

Also see the main page for this service.

Good to know

What Stuart homeowners ask us

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.

★★★★★

“JD gave me an appointment time and actually arrived early. He explained in layman terms and showed me pictures of what was happening with my system.”

Dena PhelpsGoogle review, July 2024
★★★★★

“Jonathan was on time, friendly, and done within 30 minutes. All others quoted me over $100 just to come out and diagnose the issue.”

Cody StewartGoogle review, January 2026
★★★★★

“I called them that morning and within two hours they came. Problem solved for elderly parents without air in the middle of the summer.”

Union Color SalonGoogle review, August 2025

Read all 167 Google reviews

Licensed CAC1822339

Request Control board replacement in Stuart

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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