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When your HVAC system breaks down, Guardian Heating and Air is here to help with expert diagnosis, precise repairs, and fast turnaround times. Our skilled technicians will quickly pinpoint the issue—whether it’s a faulty compressor, clogged filter, or thermostat problem—and fix it with the highest quality materials and techniques for lasting results. With transparent pricing and a satisfaction guarantee, you can trust Guardian Heating and Air to restore comfort to your home with care and reliability.
At Guardian Heating & Air, we believe you should never pay just to find out what’s wrong. That’s why, right now, when you approve any paid repair, your service call is 100% FREE — a $99 value, waived just for trusting Jacksonville’s AC Guardians.
Whether it’s a strange noise, weak airflow, or full system failure — we’re here to fix it fast, and fix it right.
Offer cannot be combined with any other offer. This holds no cash value. Not valid on after-hours, weekend, or holiday service calls.
Trust Guardian Heating and Air to quickly diagnose and fix your HVAC issues, restoring comfort with expert care and precision.
Experienced professionals providing expert care for all HVAC needs.
Upfront, honest pricing with no hidden fees or surprises.
Prompt service to restore comfort quickly and efficiently.
Maintenance, repair, and emergency services tailored to your needs.
We stand behind our work and prioritize your satisfaction.
Only the highest quality parts and techniques for lasting results.
A reputation for excellence and reliability in your community.
Yes. The first thing we recommend any homeowner check is the electrical panel. If the breaker supplying power to your air conditioner has tripped, the outdoor unit may not be operating even though the indoor blower continues to run. When that happens, you’ll feel warm air coming from the vents.
If the breaker is tripped once, you can reset it. If it trips again, stop resetting it and contact a qualified HVAC contractor to determine why.
Yes. If the breaker isn’t tripped, another item worth checking is the float switch located near the drain line at the indoor air handler, typically where you change your air filter.
Depending on how the float switch was wired during installation, it may only shut off the outdoor unit while allowing the indoor blower to continue operating. Although this isn’t the most common wiring method, we do see it in the field.
If your thermostat uses batteries, it’s also worth replacing them to verify the thermostat is operating correctly.
Once you’ve completed the basic homeowner checks, the remaining causes are typically mechanical or electrical issues that require professional diagnosis.
Some common possibilities include:
There are many possible causes, which is why professional testing is recommended rather than guessing or replacing parts unnecessarily.
At Guardian, we don’t believe in guessing.
Every air conditioning repair service call begins with understanding the complete picture.
Our technician first interviews the homeowner to understand exactly what’s happening. From there, we evaluate:
We then deploy our diagnostic probes and perform a complete system evaluation.
Instead of focusing on one symptom, we’re collecting data from the entire HVAC system so we understand how everything is working together.
Once we’ve identified the issue, we explain everything in plain language through our Guardian Shield Vitals Program, allowing homeowners to understand what we’re seeing before any repairs begin.
After repairs are completed, we rerun the evaluation so homeowners can see the improvement using live operating data from their system.
No. If you’ve already scheduled a technician, it’s generally best to turn the thermostat to the OFF position.
We do not recommend turning off power at the breaker or disconnect unless instructed by a technician because doing so may erase fault codes that help diagnose the problem.
Turning the thermostat off helps prevent unnecessary wear on the equipment while leaving the system in its current condition for proper diagnosis.
Still blowing warm air? Guardian Heating & Air offers air conditioning repair service serving Jacksonville, FL, Ponte Vedra Beach, and Orange Park. Call (904) 776-4225 to schedule a diagnostic visit.