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TRUSTED BY KEY BISCAYNE, FL HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon426
    Verified heating and air conditioning services reviews

Top-Rated Heating and air conditioning pros in Key Biscayne - Updated Nov 2026

Avatar for Weathershield Air Conditioning
Weathershield Air Conditioning
5.0(
17
)
Central A/C - InstallBoiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For Business+47 more

Serving Key Biscayne, FL and surrounding areas

Approved

In business since 2005

Free estimates

Emergency services offered

"These folks are great!  The first couple of years that I had this central AC installed, the main HVAC unit would freeze up and flood the closet and adjacent areas.  
After paying another company for the same repair for three years, I finally ditched them and called Weathershield.  They came out, noticed that I had a bad thermostat, replace that, serviced the unit and I haven't had a problem since then. 
The folks are super polite, arrive on time and have had my AC purring now for over four years now.  Can't say enough.
"
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+1

Response time10 hrs
7 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for Ice City AC, Inc.
Ice City AC, Inc.
4.9(
212
)
Central A/C - Service or RepairDucts & Vents - Install or Replace

Serving Key Biscayne, FL and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"I had an amazing experience with Ice City AC. From the first call, they were responsive, professional, and actually showed up on time (which is rare in Miami). They diagnosed the issue quickly and explained everything in a way that made sense—no upselling, no pressure. What really stood out was the honesty. Instead of trying to sell me a whole new system, they fixed the problem and saved me thousands. The work was clean, fast, and done right the first time. You can tell they know what they’re doing. My AC is blowing colder than ever, and the airflow in my house is way better now. If you’re looking for someone reliable, knowledgeable, and fair on pricing, Ice City AC is the real deal. I won’t call anyone else. Highly recommend."
New Rheem Shorty Install
High Efficiency Installation
Jayden Mr.IceCity Checking pressure.
Mr.IceCity cooling off
Ice City AC Junior shirts

+3

Response time4 hrs
9 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Skyline HVAC LLC
Skyline HVAC LLC
4.7(
14
)
Central A/C - InstallCentral A/C - Service or RepairCentral Air Cleaner - Repair or Service+9 more

Serving Key Biscayne, FL and surrounding areas

Approved

In business since 2017

Free estimates

"Skyline HVAC did an excellent job installing my AC. The installer was professional, on time, and clearly knew what they were doing. They explained the process, worked efficiently, and made sure everything was installed cleanly and correctly. Before leaving, they double-checked that the system was running perfectly. My AC works great and I’m very happy with the service. I’d definitely recommend Skyline HVAC to anyone needing quality HVAC work."
7.5 ton replacement
7.5 ton replacement
8 neighbors recently requested a quote
Avatar for TRIPLE AAA LLC
TRIPLE AAA LLC
5.0(
31
)
Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace+1 more

Serving Key Biscayne, FL and surrounding areas

Approved

In business since 2025

Free estimates

Offers commercial services

"I had an amazing experience with Triple AAA LLC They did an excellent job on my HVAC system very professional, on time, and honest. The technician explained everything clearly and made sure everything was working perfectly before leaving. Their customer service is top notch friendly, respectful, and they truly care about their customers. I highly recommend Triple AAA LLC to anyone looking for quality HVAC service you can trust!!!"
Response time7 hrs
Response rate100%
2 neighbors recently requested a quote
Avatar for Comfort Air Conditioning, Inc.
Comfort Air Conditioning, Inc.
5.0(
36
)
Central A/C - Service or Repair

Serving Key Biscayne, FL and surrounding areas

Approved

In business since 2019

Free estimates

Credit card accepted

"Finding a dependable air conditioning repair and service provider can often feel like a daunting task, but this company truly exceeded all my expectations. They arrived promptly at the scheduled time, radiating professionalism from the moment they stepped through the door. What impressed me the most was their willingness to thoroughly explain each step of the repair process, ensuring I understood the intricate workings of my system. As they conducted their assessment, they took the time to showcase all the issues plaguing our air conditioner, walking me through the problems with clarity and detail. Their expertise was evident, and they tackled each issue with precision and efficiency. I wholeheartedly recommend this company to anyone in need of air conditioning service. Their commitment to quality and customer satisfaction truly sets them apart in a crowded market."
Response time5 hrs
Response rate98%
Recommended by73%of homeowners
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Heating and Air Conditioning FAQs, answered by experts

A window AC unit is not completely silent. You’ll hear the sound of air blowing, and if you put your ear right up next to the unit, you may hear a slight hiss or gurgle as the refrigerant flows through the system. That said, if your system is making a running water sound, a loud banging sound, a grinding sound, or physically vibrating, you may be facing an issue or malfunction with your AC unit.

The average life span of an HVAC system is 15 to 20 years. Even if your old air conditioner is still functional, it isn't as energy-efficient as a newer system (especially one with an Energy Star designation). Older HVAC systems aren't as efficient, and the 10-year mark is when you should start making full system replacement plans. Twenty years in, that plan should be well underway rather than waiting for the unit to die.

Fixing a leak in an AC unit costs $200 to $1,600, depending on the type of leak and any related damage. But depending on the age and condition of your AC, it might make more sense to replace the AC unit instead of repairing it. If your AC is only a few years old and relatively problem-free, then repairing it is the right call. But if it’s nearing a decade old and has other issues, consider replacing it.

Mold in your air conditioner isn't a good thing, as it can be harmful to your health. If the mold travels through the ductwork or is blown out of the A/C, you and your family can inhale mold spores and develop respiratory illnesses and other problems. Preventing mold from growing in the air conditioner will help protect your health.

Yes, you can potentially save $60 to $200 by handling your own air conditioner capacitor installation. However, capacitor replacement comes with the risk of electric shock. Only attempt this if you have the knowledge and protective gear to carry it out safely. Otherwise, we recommend hiring an HVAC pro with the experience to properly diagnose the issue and avoid damaging other parts of your AC unit.

The Key Biscayne, FL homeowners’ guide to heating and air conditioning services

From average costs to expert advice, get all the answers you need to get your job done.