Top-rated heating and air conditioning pros.

Get matched with top heating and air conditioning pros in Key Largo, FL

Enter your zip and get matched with up to 5 pros

Need a pro for your heating and air conditioning service project in Key Largo, FL?

Select your specific project to find the pro for you.

TRUSTED BY KEY LARGO, FL HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon88
    Verified heating and air conditioning services reviews

Verified Reviews for Heating And Air Conditioning Service pros in Key Largo, FL

*The Angi rating for Heating And Air Conditioning Service companies in Key Largo, FL is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Heating And Air Conditioning Service needs.

*The HomeAdvisor rating for Heating And Air Conditioning Service companies in Key Largo, FL is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Heating And Air Conditioning Service needs.

Last update on October 26, 2025

Find Heating and air conditioning pros in Key Largo

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 Largo, FL and surrounding areas

Approved

In business since 2017

Free estimates

Emergency services offered

"Ozzie was able to quickly repair my HVAC system and had great customer service. Overall extremely satisfied"
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
11 neighbors recently requested a quote
Recommended by92%of homeowners
Request Quote
Avatar for One Hour Air Conditioning & Heating of Miami
One Hour Air Conditioning & Heating of Miami
4.4(
13
)
Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace+7 more

Serving Key Largo, FL and surrounding areas

Approved

In business since 1987

Emergency services offered

Warranties offered

"They did an excellent job & were very professional. My air conditioner is like brand new again. I would highly recommend them to anyone. They also have a membership package for maintenance which is well worth it and I highly recommend that as well."
Testing Outdoor Unit
Testing Outdoor Unit
Greeting Clients
Working On Indoor Unit
Testing Indoor Unit

+7

48 neighbors recently requested a quote
Recommended by100%of homeowners
Request Quote
ARI AIR MECHANICAL LLC
5.0(
3
)
Central A/C - Service or RepairDuctless Mini-split A/C - Install or ReplaceDucts & Vents - Install or Replace

Serving Key Largo, FL and surrounding areas

Approved

Free estimates

Credit card accepted

Offers commercial services

"Ariel has serviced and maintained my AC for awhile now and recently replaced my ancient metal ducts with new ducts and vents. He is the best! Reliable, honest, hard working, efficient, neat and well organized, exceptional work ethic, a master craftsman. He is a joy to work with and I highly, highly recommend him. You couldn't be in better hands when you work with him. Forget 5 stars ---- he is at least 10 stars!!!!"
4 Ton System
4 Ton System
Residential Installations
Residential Installations
Residential Installations

+6

Request Quote
major league contracting services
5.0(
10
)
Boiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For BusinessBoiler or Radiator Heating System - Repair or Service+47 more

Serving Key Largo, FL and surrounding areas

In business since 1990

Free estimates

Emergency services offered

"La experiencia de la insulacion fue muy buena. Los técnicos fueron muy responsable y respetuoso, y hicieron el trabajo muy bien."
4 TON RHEEM...Flood Zone....
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+13

Recommended by100%of homeowners
Request Quote
Avatar for S.B.R.P.E CONTRACTORS, INC.
S.B.R.P.E CONTRACTORS, INC.
5.0(
7
)
Central A/C - InstallCentral A/C - Service or RepairCentral Air Cleaner - Repair or Service+20 more

Serving Key Largo, FL and surrounding areas

In business since 2022

Free estimates

Emergency services offered

"Excelente servicio me presto el señor, muy amable, y profesional, quede satisfecha de sus servicios, lo puedo recomendar a otras personas,. Excelente servicio me presto el señor, muy amable, y profesional, quede satisfecha de sus servicios, lo puedo recomendar a otras personas,."
Response time3 days
Response rate100%
Request Quote
Avatar for City Electric Engineering, Inc.
City Electric Engineering, Inc.
5.0(
6
)
Boiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For BusinessBoiler or Radiator Heating System - Repair or Service+47 more

Serving Key Largo, FL and surrounding areas

In business since 1992

Free estimates

Emergency services offered

"Installed a 'ULTRA VIOLET LIGHT' above my A/C Filter to kill germs, was done Very Professionally with out creating a mess. Arrived on time and ready to do the work needed to get the job done.Cost was Very Reasonable, cleaned and put all things back where they belonged. when asked questions answered in a way that anyone could understand. Will use him always for any Electrical Work at home or Business."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+7

Recommended by100%of homeowners
Request Quote
Core Mechanical
4.4(
28
)
Boiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For BusinessBoiler or Radiator Heating System - Repair or Service+47 more

Serving Key Largo, FL and surrounding areas

In business since 2004

Emergency services offered

Credit card accepted

"We've had two visits by Core Mechanical.
One for diagnosis and customer approved temporary repair to allow time to acquire a replacement unit.
Second for replacement of faulty a/c unit.
Both occasions the service tech telephoned with expected arrival, and an updated weather delay.
Services performed quickly and with no difficulties.
Costs were as quoted.
We were happy to provide a gratuity beyond the quoted price.
We would not hesitate to recommend Core Mechanical to anyone needing their services.
"
Additional Photos
Recommended by87%of homeowners
Request Quote
Avatar for Centry Air Designs
Centry Air Designs
4.9(
14
)
Air Ducts & Vents - CleanBoiler or Radiator Heating System - Install or ReplaceBoiler or Radiator Heating System - Install or Replace - For Business+48 more

Serving Key Largo, FL and surrounding areas

In business since 1986

Free estimates

Emergency services offered

"Robert and his team showed up at the time we specified and finished the work ahead of schedule. His team was courteous, clean, and professional."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+8

Recommended by100%of homeowners
Request Quote
Avatar for Miami Electric & Air Conditioning Corp
Miami Electric & Air Conditioning Corp
5.0(
6
)
Central A/C - InstallCentral A/C - Service or RepairCentral Air Cleaner - Repair or Service+3 more

Serving Key Largo, FL and surrounding areas

In business since 2010

Free estimates

Emergency services offered

"Carlos is amazing trusted and reliable 👏 we replace our old electrical panel and the experience was great punctuality, smooth service and very good price. Totally recommend this company"
Request Quote
...
Showing 1-10 of 98
Heating and Air Conditioning questions, answered by experts

No, for two very important reasons. First, it’s illegal to release refrigerant into the air or ground since it can be toxic and cause environmental damage. Technicians typically pump old or extra refrigerant into separate tanks for special disposal. Second, without professional equipment to read refrigerant pressure and levels, plus the AC’s suggested requirements, it’s impossible to know if you’ve removed the right amount of refrigerant. Stay away from a DIY solution here and seek an expert with the right tools.

Yes. It's normal for the AC compressor to cycle on and off intermittently in dry mode as it maintains the desired humidity level. The compressor cycles to prevent over-dehumidification and to maintain a comfortable indoor environment. This cycling behavior ensures efficient operation and optimal humidity control, contributing to the overall effectiveness of the dry mode function in your AC system.

If your home has an existing forced-air heat system, you can add a central air conditioner to it. An HVAC technician can retrofit your forced-air heating system by installing an evaporator coil onto the furnace plenum, the box next to the furnace that draws in air. Once installed, the air conditioning coils use the furnace’s blower to circulate the air.

The $5,000 rule for HVAC systems helps homeowners decide whether to repair or replace an AC or furnace. Take the quote for the HVAC repair cost and multiply that by the age of the HVAC system. If the total is higher than $5,000, it’s more cost-effective to replace the system. If the total is lower than $5,000, consider repairing the system.

The standard HVAC warranty is around five years. Still, many brands offer an extension to 10 years if you register the product within a specific timeframe, typically 60 to 90 days post-purchase or HVAC installation. Over the past decade, warranty periods have substantially increased, shifting from 3-5 years in the 90s to the now-prevalent 10+ year warranties. Both warranty types cover parts failing due to manufacturer defects, incurring no additional costs. Some manufacturers provide extended warranties surpassing the usual 15- to 20-year window, though these often involve extra fees. 

The Key Largo, 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.

See all articles