When the Problem Is Broader Than One Part
If your problem is broader than one part, see our AC Repair and Heating Repair pages. For thermostat problems, see Thermostat Repair, Replacement & Upgrades.
AC Repair Services
HVAC Parts Repair & Replacement · Jacksonville, FL
HVAC Parts Repair & Replacement in Jacksonville, FL
Find the Failed Part. Fix It Right.
When one small part fails, your whole heating and cooling system can stop. A worn capacitor, a stuck relay or a failed blower motor can keep your system from starting, cooling or moving air, even when everything else is in good shape.
Mighty Air diagnoses and replaces failed HVAC parts for residential and light commercial systems throughout Jacksonville and Northeast Florida. We test the system to find which part actually failed, explain what we found and give you pricing before any work begins. A failed part rarely means you need a new system.
Call Mighty Air, Inc. at (904) 292-0636 to schedule HVAC parts repair in Jacksonville.
Limited-time offer
Service Call Fee Waived With Qualifying Major Repairs
Ask about current promotions when you schedule your repair.
Offer applies to qualifying repairs. Contact Mighty Air for current promotions, eligibility, and details. Cannot be combined with other offers unless otherwise stated.
Why we diagnose before we replace
Why We Diagnose Before We Replace
Many failed parts cause the same symptoms. An AC that won't start could have a bad capacitor, contactor, relay, control board or thermostat. Swapping parts until the system runs gets expensive and can leave the real problem in place.
Our technicians test the electrical supply, the control signals and the parts involved to find where the system stops working. We also look for what caused the failure. A part that burned out because of a loose wire or an overworked motor will fail again unless that cause is fixed too.
We find what failed, and why.A part that burned out for a reason will burn out again unless the reason is fixed.
Common HVAC parts we repair & replace
Common HVAC Parts We Repair & Replace
These are the parts that stop Jacksonville systems most often. Each one is tested before it's replaced. Tap a part to see what it does and how it fails.
CapacitorsHum, click or a hard start
Capacitors give motors the boost they need to start and keep running. A weak capacitor can make the system hum, click, struggle to start or shut off. Capacitors are one of the most common parts to fail in Florida's heat, and we test them before replacing them.
Contactors & RelaysClicks but won't start
Contactors and relays are electrical switches that turn the compressor, fans and other parts on and off when the thermostat calls. When they stick or wear out, the system may click without starting, run when it should shut off or work only some of the time. Contactors and relays aren't interchangeable, so we match the replacement to your equipment and circuit.
ECM & Blower MotorsWeak or no airflow
The blower motor moves air across the indoor coil and through your ducts. Many newer systems use an ECM motor, an electronically controlled motor that adjusts its speed to match what the system needs. A failing blower motor can cause weak airflow, surging, unusual noise or no air from the vents. Because ECM motors respond to signals from the system, we check the controls too before replacing the motor, and we make sure any replacement is compatible with your equipment.
Condenser Fan MotorsOutdoor fan won't spin
The fan on top of your outdoor unit moves heat away from the system. If it stops spinning, the outdoor unit can overheat and shut down. A fan that won't spin can also be a capacitor or electrical problem, which we rule out first.
Control BoardsFault codes or erratic operation
The control board coordinates the steps your system goes through when the thermostat calls for heating or cooling. A failing board can cause unpredictable operation, parts that don't turn on, or fault codes. A blinking light on the board often points to a problem somewhere else in the system, so we read the code and test the related parts before replacing an expensive board.
TransformersBlank thermostat, no response
The transformer supplies low voltage power to the thermostat and controls. When it fails, the thermostat may go blank and the system won't respond at all. A shorted wire or another failed part can take out a transformer, so we find the cause before installing a new one.
Sensors & Safety SwitchesSystem keeps shutting itself off
Sensors and safety switches protect your system and your home. A float switch, for example, shuts the system off when the condensate drain backs up so water doesn't overflow. When these parts fail, or when they're doing their job because of another problem, the system may stop running. We find out which it is.
Condensate Pumps & Drain ComponentsWater around the indoor unit
In Jacksonville's humidity, your AC pulls a lot of water out of the air, and that water has to drain. Clogged drain lines, failed condensate pumps and bad float switches can shut the system down or leave water around the indoor unit.
Hard Start KitsExtra help for hard-starting compressors
A hard start kit gives some compressors extra help starting. It isn't right for every system. We check how your system starts before recommending one.
Small part, whole system
One Small Part Can Stop the Whole System.
Most of the calls we get for a "dead" air conditioner end with one small part. We test before we quote, so you pay for the part that failed and nothing else.
Signs a part may be failing
Signs a Part May Be Failing
These symptoms don't point to one specific part on their own. Testing tells us what actually failed.
- The system won't turn on or struggles to start
- Clicking, humming or buzzing from the equipment
- Warm air from the vents
- Weak airflow or no airflow
- The outdoor fan isn't spinning
- The system turns on and off repeatedly
- The breaker keeps tripping
- Water around the indoor unit
- A blank thermostat or a system that ignores it
Safety first
Burning Smell or Smoke?
If you notice a burning smell or see smoke, turn the system off at the thermostat and call us.
- Turn it off at the thermostat. Don't keep trying to restart the system.
- Leave the panels on. HVAC equipment has high voltage parts that can stay powered even when the thermostat is off.
- Call (904) 292-0636. Tell us what you smelled or saw and we'll go from there.
Repair the part or replace the system?
Repair the Part or Replace the System?
Replacing a failed part on an otherwise reliable system is often the practical choice. Replacement may make more sense when the system is older, needs several major repairs or uses parts that are hard to find.
Usually the answerReplace the partOn an otherwise reliable system
Sometimes the answerReplace the systemOlder, several major repairs, or hard-to-find parts
What we look at before recommending either
- 01The age of the system
- 02How many major repairs it has needed
- 03Whether replacement parts are still available
- 04The condition of the rest of the equipment
We'll walk you through both options. Learn more about AC Installation & Replacement.
When it's more than one part
Broader Repairs and Commercial Parts Service
Residential & Light Commercial Parts Replacement
We replace HVAC parts in homes and light commercial buildings, including split systems, heat pumps, and rooftop and packaged units.
Commercial HVAC Services
Catch worn parts early
Catch Worn Parts Before They Fail
Regular maintenance through our Standard and Elite Maintenance Plans gives our technicians a chance to spot worn parts before they fail. Two seasonal visits a year, and a discount on qualifying repairs.
- Two seasonal visitsSpring and fall, on the calendar for you2× / yr
- Repair discountOn qualifying repairs, applied before work begins10–15%
- Priority serviceElite members move to the front of the scheduleElite
Family-owned since 2016
Tested Before It's Replaced. Explained Before It's Billed.
Our name is on every van and every invoice. That's why we trace the failure to the part, fix the cause, and show you the pricing before any work begins.
HVAC parts questions
HVAC Parts FAQs
Quick answers to the questions Jacksonville homeowners ask us most about failed HVAC parts.
Have a question that isn't here? Call (904) 292-0636 and tell us what's happening.
Schedule HVAC ServiceHow do I know which HVAC part is broken?
Many failed parts cause the same symptoms, so testing is the only reliable way to know. We test the system to find where it stops working before recommending a repair.
What are the most common HVAC parts that fail?
Capacitors, contactors, relays, blower and fan motors, control boards and drain components are among the most common. Which parts wear out depends on the equipment, how much it runs and how well it's been maintained.
Why does my AC click but not start?
The click is usually a relay or contactor trying to start the system. A bad capacitor, motor, control board or wiring problem can stop the startup from finishing. We trace the problem to the part that failed.
Why does my HVAC system have power but the blower won't run?
It could be the blower motor, the motor's controls, the control board, the thermostat or the wiring. We test each one to find where the signal stops.
Does a blinking light on my control board mean the board is bad?
Not necessarily. The light is usually a fault code pointing to another part of the system. We read the code for your specific equipment and test the related parts.
Can you replace one part without replacing the whole system?
Often, yes. If the rest of the system is in good condition, replacing the failed part is usually the most practical repair.
Should I replace an HVAC part myself?
We don't recommend it. HVAC equipment has high voltage parts that can stay powered even when the thermostat is off, and replacing the wrong part won't fix the problem.
Schedule HVAC parts repair
Schedule HVAC Parts Repair in Jacksonville
If your system won't start, is making new noises or isn't moving air, Mighty Air will find the part that failed and explain your options before we fix it.
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 HVAC parts repair in Jacksonville, FL, and surrounding areas.
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