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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

Find Heating and air conditioning pros in Key Largo

Avatar for One Hour Air Conditioning & Heating of Miami
One Hour Air Conditioning & Heating of Miami
4.4(
13
)

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
ARI AIR MECHANICAL LLC
5.0(
3
)

Serving Key Largo, FL and surrounding areas

Approved

Free estimates

Credit card accepted

Offers commercial services

"My experience could not have been better, every time I needed Ariel. More than once my medical practice has had air conditioning problems and he has done everything he could resolve the situation as fast as possible. The same has happened at my home. I have the utmost respect for him and his business. He is efficient, very responsive and his price is very fair. He has never disappointed and I think anyone can expect the same outcome!!"
4 Ton System
4 Ton System
Residential Installations
Residential Installations
Residential Installations

+6

Avatar for S.B.R.P.E CONTRACTORS, INC.
S.B.R.P.E CONTRACTORS, INC.
5.0(
7
)

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%
Avatar for City Electric Engineering, Inc.
City Electric Engineering, Inc.
5.0(
6
)

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
Core Mechanical
4.4(
28
)

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
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Heating and Air Conditioning questions, answered by experts

A home AC unit provides anywhere from one-half to five tons of cooling and requires approximately two to four pounds of refrigerant per ton of cooling. At approximately five to 10 minutes to fill one pound of refrigerant, a home that requires three tons of cooling will take about six to 12 pounds of refrigerant and approximately 30 minutes to two hours to completely recharge the unit.

A blocked return air vent can cause your HVAC system to work much harder and, therefore, less efficiently. The result is higher utility bills and poorer air quality. A blocked return air vent can also cause unpleasant dust, dander, and odors to linger in your home’s air.

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.

Yes, technicians check refrigerant levels, loop performance, and system calibration for peak efficiency.

Deciding whether to replace just the AC coil or the entire system depends on the age of your unit and the overall cost. Replacing a coil is less expensive than a full system replacement, but it can still be a pricey repair. If your HVAC system is relatively new and still under warranty, or if the replacement cost is significantly lower than a new system, replacing the coil can be a worthwhile investment that restores efficiency and extends the unit's life. However, for older systems (nearing the end of their 10-15 year lifespan) or those with extensive damage, it is often more cost-effective to replace the entire AC unit. Mismatched coils in an older system can lead to inefficiency and future breakdowns, so a full replacement ensures optimal performance and avoids further costly repairs.

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.