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Best boiler installation pros near San Antonio, FL

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TRUSTED BY SAN ANTONIO, FL HOMEOWNERS

  • Average homeowner rating star icon4.5
    Average homeowner rating
  • Verified reviews icon1.4k+
    Verified boiler installation services reviews

Top-Rated Boiler installation pros in San Antonio - Updated Nov 2026

Avatar for A Breath Of Fresh Aire
A Breath Of Fresh Aire
4.7(
187
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving San Antonio, FL and surrounding areas

Approved

Super Service Award Winner

In business since 2016

Free estimates

Emergency services offered

"Ken Marcus, the technician who performed the work, was highly professional and courteous. He completed the work in the time frame promised, including the recommendation and installation of a germicidal unit inside the air handler. Ken indicated that the germicidal unit was 99.9% effective in the killing and removal of mold, spores and bacteria from the A/C system. This would be of great help in the improvement of air quality inside the home, as well as prolong system life. Ken cleaned up thoroughly when the job was completed."
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+16

Response time11 hrs
Response rate100%
7 neighbors recently requested a quote
Avatar for Fontana Brothers Heating & Air Conditioning
Fontana Brothers Heating & Air Conditioning
5.0(
37
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving San Antonio, FL and surrounding areas

Approved

In business since 2012

Free estimates

Emergency services offered

"Fontana Brothers installed my new Bosch HVAC system, and I couldn’t be happier with the experience. Freddie and Shaquille arrived exactly on time, worked efficiently, and left the work area cleaner than it was before they began. Their attention to detail and professionalism were outstanding. As a Realtor for more than 30 years, I’ve dealt with many HVAC companies, and Fontana Brothers continues to be one of the very best. They consistently deliver excellent service to both me and my clients, and their pricing remains highly competitive. I trust them completely with my referrals. Special thanks to Dan Fontana, who heads the service department — always organized, responsive, and helpful — as well as the entire office staff, who are consistently friendly and a pleasure to work with. I will absolutely continue to recommend Fontana Brothers to others seeking HVAC installation, repair, or replacement."
Response time1 day
12 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for IERNA's Heating & Cooling
IERNA's Heating & Cooling
4.6(
718
)
Electric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install - For Business+2 more

Serving San Antonio, FL and surrounding areas

In business since 2003

Free estimates

Emergency services offered

"Excellent. They installed the system 3 months ago. Today the system shut down due to a fluid back up when I was cleaning the drain line. The technician came out within 2 hours and promptly got the system up and running and checked the drain line. He also installed a new end to the drain line outside the house."
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Ierna's Company Photo
MOE Group Photo
MOE Logo

+5

Recommended by92%of homeowners
D AND C AIR AND WATER
4.8(
63
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving San Antonio, FL and surrounding areas

In business since 2006

"Dan and Tim are a super team.  They investigated, quoted, ordered, delivered and installed the water system which turned our well water in to holi-water.  Love their sense of humor, and their way of doing their job, and at the end of the day I am very happy.
"
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+3

Recommended by94%of homeowners
Avatar for Air 4 U Air Conditioning and Heating Inc.
Air 4 U Air Conditioning and Heating Inc.
4.9(
21
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving San Antonio, FL and surrounding areas

In business since 2006

Free estimates

Emergency services offered

"Steve showed up and first filled the unit with nitrogen to see if the leak could be located that way. Since the leak was so small and was located under some line insulation it was not evident. Step 2 was to vacuum out Nitrogen and replace with Freon and dye. We ran the unit for 24 hours and then Steve came back the following day and found the leak from the dye. He then had to repair the hole and then refill the system with coolant again after another deep vacuum.  
All in all he was very professional and he told me from the very beginning how much the cost would be and stuck to that exact price to the penny. Steve is definitely one of the most honest tradesmen in the business and I will definitely be using him again when it comes time to replace my ageing AC unit.
"
Recommended by95%of homeowners
Avatar for Kelly Plumbing LLC
Kelly Plumbing LLC
4.8(
53
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving San Antonio, FL and surrounding areas

In business since 2000

Free estimates

Emergency services offered

"Plumber was prompt and arrived when scheduled.  He unclogged my bathroom pool toilet.  He then gave me a price for the installation of a laundry tub.  He came the next day and neatly broke through the garage wall to get to the pipes to be able to install  the laundry tub.  This precise cutting of the sheetrock made it possible for my husband to reinstall it  without any problem.  I would recommend this company and will use them again."
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Recommended by97%of homeowners
Avatar for True Integrity
True Integrity
5.0(
15
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving San Antonio, FL and surrounding areas

In business since 2012

Free estimates

Credit card accepted

"Patriot installed everything as quoted, plus some unexpected issues which arose after quote. Installation was done in very professional manner, extremely clean installation. All debris and old equipment removed. Very professional contractor. Went above and beyond my expectations for installation. Would HIGHLY recommend if you need AC repair or replacement."
Recommended by100%of homeowners
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Install Boiler FAQs, answered by experts

Professionals can recommend efficient layouts or appliances and ensuring regulatory compliance.

Using heating oil to heat your home has its advantages, but it also has its disadvantages. 

Consider these drawbacks before installing a heating oil system:

  • Heating oil prices fluctuate frequently

  • Risk of oil spills or leaks

  • Produces more air pollution and soot compared to a gas furnace

  • Regular maintenance required for equipment

  • Need to reorder heating oil consistently to avoid running out

Unless they are connected to the same system, boilers and water heaters will both need their own expansion tanks. The only case they wouldn’t have separate expansion tanks is if the boiler is pulling double duty and managing a heating system while also supplying hot water for a home. In which case, you may not need a hot water heater.

In some cases, conversion kits are available, but not all boilers are compatible. Conversion may require significant modifications and should only be performed by a qualified professional. Before making a decision, compare conversion costs to the cost of a complete replacement to determine the most cost-effective and reliable option for your home.

You should get anywhere from three to five quotes for HVAC replacement to get an idea of the average cost of a new unit. Although this quote-collecting process can be time consuming, it allows you to compare what work is required, what type of unit you should install, and how much you should expect to pay for the service.

The San Antonio, FL homeowners’ guide to boiler installation services

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