A blank or unresponsive screen
Batteries, a tripped breaker, a wiring problem or a safety switch that shut the system off.
Thermostats · Jacksonville, FL
Thermostat Repair, Replacement & Upgrades in Jacksonville, FL
Find Out Whether It's the Thermostat or the System
Your thermostat tells your heating and cooling system when to run. When it goes blank, reads the wrong temperature or stops responding, the whole system can seem broken, even when the problem is somewhere else.
Mighty Air provides thermostat troubleshooting, repair, replacement and upgrades for residential and light commercial properties throughout Jacksonville and Northeast Florida. We check the thermostat and the HVAC system together, so you only replace what actually needs replacing.
Call Mighty Air, Inc. at (904) 292-0636 to schedule thermostat service in Jacksonville.
Thermostat troubleshooting & repair
Thermostat Troubleshooting & Repair
A thermostat problem doesn't always mean you need a new thermostat. The cause can be the thermostat itself, its wiring, a loss of power, or another part of the HVAC system that's stopping the equipment from running.
We test whether the thermostat is sending the right signal and where the system stops responding. If the thermostat is working fine, our AC Repair or Heating Repair services can take care of the equipment problem.
The thermostat is where we start, not where we stop.A blank screen can be the thermostat, the wiring, a breaker or a safety switch.
What you're noticing
Common Signs of a Thermostat Problem
Tell us the symptom. We'll find out whether it's the thermostat, the wiring or the equipment. Common signs include:
Readings that don't match the room
The thermostat's location or its sensor can throw off what it reads.
AC or heat that won't turn on
The thermostat may be calling correctly while a part in the equipment has failed.
A system that won't shut off
A stuck relay, a wiring issue or a setting that keeps the equipment running.
Heating or cooling that cuts in and out
Short cycling can start at the thermostat or somewhere in the system.
Thermostat or system?
The Thermostat Gets Blamed First. It's Often Innocent.
A failed capacitor, a tripped float switch or a loose wire all look like a dead thermostat from the hallway. We trace the signal from the wall to the equipment before anything gets replaced.
Thermostat replacement
Thermostat Replacement
When a thermostat is failing, unreliable or no longer fits your system, replacement is often the simplest fix. The right thermostat depends on your equipment, so we check compatibility first, including:
- The type of system, such as a heat pump or an air conditioner with electric heat
- The number of heating and cooling stages
- The existing wiring
- How the equipment communicates with its controls
A thermostat chosen only for its features or looks can cause problems if it doesn't match the system.
Smart thermostat installation
Smart Thermostat Installation
Smart thermostats let you adjust temperatures and schedules from your phone, and many connect with smart home platforms. Features vary by model.
Before installing one, we confirm it will work with your HVAC equipment and wiring. Many smart thermostats need a common wire, often called a C wire, for continuous power. If your system doesn't have one, we'll explain your options.
No C wire? Not a dead end.Many smart thermostats need continuous power. We'll explain your options before you buy one.
Thermostat relocation & temperature sensors
Thermostat Relocation & Temperature Sensors
Where a thermostat is mounted affects what it reads. A thermostat in direct sunlight, near a heat source or in a hallway with little airflow may not reflect how the rest of the space feels. We can move the thermostat to a better location or add remote temperature sensors so the system responds to the rooms you actually use.
If one area stays warmer than the rest, the cause may be airflow, not the thermostat. Learn more about our Ductwork & Duct Cleaning services.
Sun on the thermostat, cold in the bedroom.A sensor in the rooms you use fixes what moving the thermostat can't.
Beyond the home thermostat
Commercial Controls and System Problems
Commercial Thermostats & Controls
Light commercial buildings often have different control needs, such as schedules that match business hours or controls for rooftop and packaged equipment. We troubleshoot, replace and upgrade commercial thermostats and controls after confirming what your equipment requires.
Commercial HVAC Services
When It Isn't the Thermostat
If the thermostat is sending the right signal and the equipment still won't respond, the problem is in the system: a capacitor, contactor, control board or safety switch. We trace it and quote that repair instead. See HVAC Parts Repair & Replacement.
AC Repair Services
Family-owned since 2016
Compatibility Checked First. Everything Working Together After.
Our name is on every van and every invoice. That's why we match the thermostat to the equipment and test the whole system before we leave.
Thermostat questions
Thermostat FAQs
Quick answers to the questions Jacksonville homeowners ask us most about thermostats.
Have a question that isn't here? Call (904) 292-0636 and tell us what's happening.
Schedule Thermostat ServiceHow do I know if my thermostat is bad?
A blank screen, wrong temperature readings or a system that doesn't respond to changes can all point to the thermostat. Other HVAC problems cause the same symptoms, so we diagnose the system before replacing anything.
Why is my thermostat blank?
It may need new batteries, or it may have lost power from a tripped breaker, a wiring problem or a safety switch that shut the system off, such as a float switch on a clogged condensate drain. If new batteries don't fix it, the cause is likely elsewhere in the system.
Why is my thermostat working but my AC won't turn on?
The thermostat may be sending the right signal while another part has failed, such as a capacitor, contactor, control board or safety switch. We trace the problem from the thermostat to the equipment.
Can any HVAC system use a smart thermostat?
Not always. It depends on your equipment, the controls and the existing wiring. We'll confirm compatibility before installation.
Do smart thermostats work with heat pumps?
Many do, but the thermostat has to be set up correctly to control the heat pump and its auxiliary heat. We confirm the model works with your specific system.
Do you install thermostats for businesses?
Yes. We service thermostats and controls for light commercial properties, including rooftop and packaged equipment.
Schedule thermostat service
Schedule Thermostat Service in Jacksonville
Whether your thermostat stopped working, reads the wrong temperature or you're ready for a smart thermostat, Mighty Air will find out what your system needs and make sure everything works together.
Mighty Air is a family-owned HVAC company serving Jacksonville and Northeast Florida since 2016. Always there when you need us.
Mighty Air HVACJacksonville, Florida- Phone(904) 292-063624/7 availability
- Email[email protected]We reply the same business day
- Office8110 Cypress Plaza Dr Ste 401Jacksonville, FL 32256
Call Mighty Air, Inc. at (904) 292-0636 to schedule thermostat service in Jacksonville, FL, and surrounding areas.
Request Thermostat Service
Tell us what the thermostat is doing and we'll get back to you fast.
Need help right now? Call (904) 292-0636