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Top-Rated Air conditioning pros in Marathon - Updated Nov 2026

Avatar for Powerhouse Air Conditioning, LLC
Powerhouse Air Conditioning, LLC
4.6(
11
)
Central A/C - Service or RepairCentral A/C - Service or Repair - For Business

Serving Marathon, FL and surrounding areas

In business since 2009

Free estimates

Emergency services offered

"They installed a dual-zone Mitsubishi mini split system in my home, did a wonderful job! Best purchase I've made, I love my mini splits. They are quiet and cool the house in a short time, they look great and were installed professionally with required permits. Highly recommend this contractor for all AC installations and services. They've serviced and cleaned them as well, came with a 12 year parts warranty. I will not let anyone else work on my AC!"
Mini Split Install
Line Set and Drain
Air Handler
38" Aluminum Stand
Response time7 hrs
Recommended by90%of homeowners
Core Mechanical
4.4(
28
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+3 more

Serving Marathon, FL and surrounding areas

In business since 2004

Emergency services offered

Credit card accepted

"They came to the house 30 minutes after calling about a broken air-conditioner. This was about 7:00 in the evening. He was able to find the problem and repair it in approximately an hour. I was very relieved that they could fix it, without replacing the compressor. Great service and very professional. I feel the price was fair for an evening service call. Thank you Jason Daniels.


"
Additional Photos
Recommended by87%of homeowners
Ellington Air Conditioning & Heat
4.0(
7
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+3 more

Serving Marathon, FL and surrounding areas

In business since 1998

Free estimates

Warranties offered

"First, John Page (the design consultant) was there when promised. He was very knowledgeable & took the time to really explain things & their procedures to my Mother & I which made all the difference in making a decision on whom to go with on this journey... I call it a "journey" for these reasons: Out of the 3 other companies we called here in the Keys, not one of the seemed to care enough to spend the time & effort Ellington did, & when we asked about extending our warranties & maintenance etc. nobody had anything remotely close to offer compared to the Ellington "No Worries" program wheras they take care of EVERYTHING & the best part is there are ton of benifits no one else even offered w/no exclusions for 10 plus years. They also offer a 180 day money back guarantee in writing so for those reasons it was an easy choice! The installers were punctual, clean cut & very nice on top of truly demonstrating what was extremely important to us which was true craftsmanship. When making a purchase of this magnitude we know from past experience, it is not necesarily the equipment itself that is so important, it is the installation & setup that is even more important. After all work was done, a quality control audit was performed to assure us the machine was giving us all the efficiency it is supposed to & the ductwork was indeed installed per Johns drawings & sealed air tight as he promised. It passed with flying colors! My Mother & I would certainely recommend Ellington AC to anyone tired of a slick talking salesman that promises the world & then it does not go as planned... Probably the most professional company I have ever dealt with down here, Thank you so much!"
Recommended by83%of homeowners
Avatar for North Alabama Technical Services
North Alabama Technical Services
4.9(
124
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+3 more

Serving Marathon, FL and surrounding areas

In business since 2010

Emergency services offered

Credit card accepted

"Computer did the "gotta send info to Microsoft" but when tried to reboot it ran through automatic repair without success. I did all the alternative without any success. He came and picked up the hard drive on Tuesday and returned it on Saturday. Fortunately he was able to "restore" without any data loss. Very happy with outcome."
2014 Super Service Award Winner!
Additional Photos
Recommended by97%of homeowners
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Air Conditioning FAQs, answered by experts

The compressor is the heart of your AC system and is one of the most important parts required to keep it functioning properly. If your AC unit is making a popping, banging, clanging, clicking, or screeching sound, it could point to a problem with the compressor. If the unit is physically vibrating, that can also be an indication that your AC compressor is going bad.

You should clean your air conditioner at least once per year, but you may need to clean your whole HVAC system (including the air ducts) more often. According to the National Air Duct Cleaners Association, you may need to clean them more frequently depending on factors like whether you smoke, have pets, or have allergies.

Many factors affect how much adding air conditioning will cost you, from the size of your home to the size, type, brand, and installation specifics of the system itself. Chances are, a new central air conditioning system for a 2,000-square-foot house will cost somewhere between $3,900 and $7,900 to install, with an average around $6,000. 

Yes. Your air supply should be balanced. The return and supply ducts need to maintain that balance, and this only occurs because an equal amount of air should be entering and leaving your HVAC system. Changes in pressure, extreme weather, and blocking vents with furniture or your stuff can make the air supply unbalanced and cause your home to get too cold or hot.

You should use a breathable, weather-resistant cover with ventilation. It can be a top cover or a full cover that has mesh to allow airflow. A full, non-breathable cover can cause moisture to build up, leading to rust, frozen parts, and corrosion. A full cover also attracts unwanted critters, such as mice, that can damage the wiring and your unit. If you need to protect your AC unit from falling icicles, choose a sturdy top cover or piece of wood that prevents icicles from damaging your unit.

The Marathon, FL homeowners’ guide to air conditioning services

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