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TRUSTED BY SAINT AUGUSTINE, FL HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon601
    Verified heating and air conditioning services reviews

Top-Rated Heating and air conditioning pros in Saint Augustine - Updated Nov 2026

Avatar for Cool-R-Us, Inc.
Cool-R-Us, Inc.
4.8(
348
)
Central A/C - Service or RepairElectric Furnace / Forced Air Heating System - RepairElectric Furnace / Forced Air Heating System - Repair - For Business+9 more

Serving Saint Augustine, FL and surrounding areas

Approved

In business since 2007

Free estimates

Emergency services offered

"We had a great experience with Cool R Us. Our first contact was with Josh, who arrived at our home on time and completely prepared. He was very personable and truly professional, and quickly put us at ease. He asked questions to see what our priorities were and explained what his recommendations were and what each particular HVAC unit would do for our home environment. There was no pressure to decide immediately and he quickly sent us an online quote for all of the units that he recommended for our needs. Once we decided, we were given a very fair price and the installation was set up to accommodate our schedule. The installation technicians let us know they were on their way. They arrived and worked quickly and efficiently to remove the old unit and install the new one. These gentlemen were also very personable and professional and obviously, very knowledgeable. When installation was done, they did a complete clean-up and left our home spotless. Adem helped us to set up our digital thermostat and explained how to use the thermostat, which was one of our major concerns. He assured us that an answer to any questions we had was only a quick phone call away. After our first day of using our new unit, the humidity level in our home dropped appreciably and the air felt so much cleaner. We are very pleased with our purchase and highly recommend Cool R Us."
AC SYSTEM INSTALLED ON CHANGE OUT
AC SYSTEM INSTALLED ON CHANGE OUT
AC SYSTEM INSTALLED ON CHANGE OUT
AC SYSTEM INSTALLED ON CHANGE OUT
AC SYSTEM INSTALLED ON CHANGE OUT

+2

Response time6 hrs
1 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for Florida Air Flow Heating and Air LLC
Florida Air Flow Heating and Air LLC
5.0(
13
)
Central A/C - Service or RepairCentral Air Cleaner - Repair or ServiceElectric Furnace / Forced Air Heating System - Repair+9 more

Serving Saint Augustine, FL and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Emergency services offered

"This guys have been providing my business with amazing HVAC support at different properties for several years. I have also referred them to colleagues and friends and they all have had outstanding feedback about the great work, customer service, reliability, efficiency and honesty which is a very rare quality in this business. I have them on speed dial, this guys are the real deal."
Our Work
Our Work
Our Work
Our Work
Our Work

+5

Response time3 hrs
Response rate96%
Recommended by63%of homeowners
Climate Innovations Heating & Air Conditioning, Inc.
4.7(
33
)
Central A/C - InstallDuctless Mini-split A/C - Install or ReplaceCentral A/C - Service or Repair+10 more

Serving Saint Augustine, FL and surrounding areas

Approved

In business since 1998

Free estimates

Credit card accepted

"Amazing professionals! They installed my new HVAC system and listened carefully to what my needs were, without pressuring me. Each time I contacted them, Randall and Justin responded immediately! I could not recommend them more! Not to mention their affordable price! Thank you!"
Response time6 hrs
Response rate93%
14 neighbors recently requested a quote
Avatar for Breathe Easy Air Duct Cleaning
Breathe Easy Air Duct Cleaning
4.7(
217
)
Air Ducts & Vents - Clean

Serving Saint Augustine, FL and surrounding areas

Approved

Super Service Award Winner

In business since 2001

Free estimates

Customers say: True professional

"Chris was knowledgeable and efficient, and did a very thorough job cleaning our dryer vent. I am considering hiring him to clean our AC vents, and will definitely contact him again if my dryer vent needs cleaning."
2 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for David Gray Heating & Air, Inc.
David Gray Heating & Air, Inc.
4.3(
26
)
Central A/C - InstallElectric Furnace / Forced Air Heating System - InstallCentral A/C - Service or Repair+9 more

Serving Saint Augustine, FL and surrounding areas

Approved (Corporate)

In business since 2010

Free estimates

Emergency services offered

"I had to have my complete HVAC system replaced and I hired David Gray. What a wonderful experience. The three gentlemen that did the installation, Gabe, Zahkeem, and Muhamed were so professional and courteous. They did a fantastic job and were very meticulous, making sure everything was perfect and once installed they made sure everything was cleaned up and they made sure I understood how to use the new thermostat. They should be highly commended on their work ethics and professionalism. Highly recommend David Gray."
David Gray HVAC Technician, Colby
David Gray HVAC Technician, Brittany
22 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for MULTI SERVICE MECH CONTRACTING CORP
MULTI SERVICE MECH CONTRACTING CORP
5.0(
21
)
Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace+1 more

Serving Saint Augustine, FL and surrounding areas

Approved

In business since 2006

Free estimates

Credit card accepted

"I had an excellent experience with MULTI SERVICE MECH CONTRACTING CORP. From the moment he arrived, everything was handled with a high level of professionalism. He was punctual, respectful, and clearly very knowledgeable about his work. The central A/C installation was done efficiently and with great attention to detail. He took the time to ensure everything was installed properly and working perfectly before leaving. The quality of the work truly exceeded my expectations. I’m extremely satisfied with the results and would highly recommend MULTI SERVICE MECH CONTRACTING CORP to anyone in need of reliable and professional HVAC services."
6 neighbors recently requested a quote
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Heating and Air Conditioning FAQs, answered by experts

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. 

Some HVAC systems tend to use R410A refrigerant, although if you have an older model it may be using R22. R22 is banned due to its harmful environmental and health impacts, and it is a sign that your AC unit is old enough to consider a replacement and the significant efficiency gains that could come with it.

Indications of an HVAC problem include inconsistent heating or cooling throughout your home, unpredictable temperature changes, or inadequate air flow from vents. Abnormal sounds such as grinding, banging, or hissing, and unpleasant smells like mustiness or burning are also potential warning signs. A rise in energy costs without an increase in usage may also imply decreased efficiency. An HVAC system that frequently cycles on and off or cannot maintain a stable temperature is malfunctioning.

Most HVAC companies recommend against setting your AC below 70 as it could freeze up the system and cause more problems. Regardless of how hot it is outside, there is generally a 20 degree difference between the outside and inside temperatures, so even if it’s 100 degrees outside, your AC will likely not be able to cool your home to 70 degrees.

There are a few ways to determine if a vent is open or closed. You can inspect the vent and examine the position of the fins. If there are spaces between them, the vent is open. If the fins are flat and touching, the vent is closed. You can also stand under the vent when the system is running to see if you feel air flowing through it.

The Saint Augustine, 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.