Heating & Air Conditioning in Clay County, FL

Clay County stretches from the St. Johns River suburbs of Orange Park and Fleming Island to the rural roads around Green Cove Springs, Keystone Heights, and Penney Farms. The housing changes with it: older homes with aging ductwork, newer master-planned communities, and acreage properties where heat pumps carry the load all year. Comfort Zone works across the whole county, and every visit ends the same way, with findings in writing, photos of what we found, and pricing before any work starts.

We specialize in HVAC repair, installation, maintenance, and energy-efficient system upgrades designed to keep your property comfortable year-round.

Historic red brick courthouse with clock tower

Trusted HVAC Services in Clay County

Clay County’s coastal humidity and seasonal temperature swings can put serious strain on your HVAC system. Our team is experienced in handling everything from high-efficiency air conditioning systems to complete heating replacements.

Our services include:

✓ Air conditioning repair and replacement

✓ Heating system repair and installation

✓ Heat pump services

✓ Indoor air quality solutions

✓ Preventative HVAC maintenance

✓ Emergency HVAC repair

✓ Duct cleaning

We work with all major brands and provide honest assessments so you can make informed decisions about your comfort system.

Call (904) 406-0070 Book Online

Towns We Serve in Clay County

Orange Park

Orange Park is our Clay County anchor and home to one of our full service locations. Older riverfront homes, mature subdivisions, and busy family neighborhoods keep our techs there every week.

Fleming Island

Master-planned communities and newer systems along the river.

Green Cove Springs

The county seat, with historic homes and river humidity.

Middleburg

Acreage homes, manufactured homes, and new subdivisions, with heat pumps doing most of the work.

Oakleaf Plantation

Large family neighborhoods of two-story, multi-system homes.

Keystone Heights

Lake country homes where humidity never takes a day off.

Penney Farms

A retirement community where straight answers and no pressure matter most.

Why Clay County Homeowners Choose Comfort Zone of North Florida

✓ EPA-certified technicians who service all makes and models, from riverfront homes in Orange Park to lake houses in Keystone Heights.

✓ Paid by the hour, never on commission or quotas, so the recommendation is what your home needs and nothing more.

✓ Every visit documented: findings in writing and photos, before you approve a thing.

✓ Locally owned, in business since 2009, and based right next door in Nassau County.

✓ Carrier Factory Authorized Dealer, open 24 hours a day, with one number for the whole county: (904) 406-0070.

What Your Neighbors Say

      EXCELLENT  
   Based on 1009 reviews 
    
 
 
 
   
 
 
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   Carolyn Jones 
 
 
 
 Trustindex verifies that the original source of the review is Google. He's my guy.  On time. Considerate. Friendly and knows his craft
  
 
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   Trish Dinkla 
 
 
 
 Trustindex verifies that the original source of the review is Google. Technician was on time and very professional. He was very knowledgeable and took the time to answer my concerns. Thank you Antywan!!
  
 
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   Jean Greene 
 
 
 
 Trustindex verifies that the original source of the review is Google. He was great at listening to our concerns. Took time to trouble shoot. He is nice to talk with. You have a wonderful man working for you.
  
 
      Posted on Google  
   
   Stephanie 
 
 
 
 Trustindex verifies that the original source of the review is Google. Today we had Antywan out for our maintenance. He was very nice and knowledgeable about all the questions I was asking him. Help me understand the best things for our unit in order to keep it running smooth and suggests for us. I had lots of questions with no technical knowledge but he was still able to walk me thru what I was asking. Thank you!
  
 
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   John Gioia 
 
 
 
 Trustindex verifies that the original source of the review is Google. I had an excellent experience with Matthew Bulmer from Comfort Zone Heating & Air Conditioning. He was incredibly professional, courteous, and took the time to answer all of my questions with a high level of expertise. It is clear that he is very knowledgeable in his field, which gave me complete confidence in his work. The overall service was top-notch from start to finish. A+ service—I highly recommend Matthew and Comfort Zone Heating & Air Conditioning to anyone looking for reliable and expert care.
  
 
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   Reba Richardson 
 
 
 
 Trustindex verifies that the original source of the review is Google. Matthew performed our 6 months HVAC system maintenance. He was very knowledgeable, professional and courteous. He took the time to do a thorough check and answered all of our questions. Thank you!
  
 
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   Garrett Johnson 
 
 
 
 Trustindex verifies that the original source of the review is Google. My man was super nice super professional in and out top notch experience
  
 
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   Matt Vallez 
 
 
 
 Trustindex verifies that the original source of the review is Google. Had follow up maintenance preformed by different tech today and continue to be impressed by everyone that comes to my house representing this company.
  
 
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   Alan Boarts 
 
 
 
 Trustindex verifies that the original source of the review is Google. Matthew Bulmer was amazing. Installed new thermostats and upgraded my drainage system. His work is excellent. I highly recommend him and Comfort Zone.
  
 
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   Lady Justice 
 
 
 
 Trustindex verifies that the original source of the review is Google. The service rep did a great job.  He was on the scheduled time and fixed my a/c in no time at all.  Thanks Mr. Youmans