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Best boiler installation pros near Nantucket, MA

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Top-Rated Boiler installation pros in Nantucket - Updated Nov 2026

Avatar for All Phases Mechanical
All Phases Mechanical
4.5(
75
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Nantucket, MA and surrounding areas

In business since 1983

Free estimates

Emergency services offered

"Our experience with All Phases Mechanical has been excellent. On the first occasion we used APM, we lost heat during a cold snap in the middle of winter. We called in the morning and a technician arrived that afternoon and quickly determined that not only was our 20 year old furnace in need of expensive repairs (which a friend of ours in the construction industry validated), but continuing to run it would potentially result in a carbon monoxide hazard to my family. Carl gave us clear options and helped us understand benefits (rebates, no interest loans, etc.) that are available from the state to assist families in our predicament. We decided to move forward with a new furnace and Carl's team installed it the next day. On the second occasion, APM helped us our central air conditioning system. Again, Carl sent a technician who arrived promptly the same day, who determined that the air conditioning system was fine but it wasn't working properly due to faulty wiring. He quickly fixed it and was on his way - all at no charge. I can't say enough about All Phases Mechanical. If you're looking for a local company that cares about its customers (and understands that heating and cooking problems need to be addressed quickly), All Phase Mechanical is the company you should use."
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+6

Recommended by90%of homeowners
L&G Heating and Air Conditioning
5.0(
5
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Nantucket, MA and surrounding areas

In business since 2017

Free estimates

Emergency services offered

L&G Heating and Air Conditioning provides provides a full range of heating and air conditioning services including installation and service of the latest technology in duct less and ducted mini split heat pump systems, high efficient warm air furnaces, boilers and central AC systems. we provide annual maintenance services which includes filter changes, coil cleaning, inspecting heat exchangers and flu piping, We are family owned and have been in business for seven years and working in the trade for over forty years.

Heat pump condensers
Wall mount heat pump air handler in bedroom.
Floor mount heat pump air handler in bedroom.
Floor mount heat pump air handler in bedroom.
Wall mount heat pump air handler in living room.

+12

Response time7 hrs
Response rate100%
Recommended by100%of homeowners
Avatar for Petro Home Services
Petro Home Services
3.9(
165
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Nantucket, MA and surrounding areas

In business since 1903

Emergency services offered

Credit card accepted

"We recently had Walter Haley from Petro Home Services come to our home to do an annual service on our furnace. He explained to us that our chimney was a mess and that he had to shut the hot water off until we got it fixed, no problem. We just had the chimney fixed and Walter came back to finish the initial tune up and we couldn't be happier with his service. This is the 2nd year he has serviced our furnace and he even stayed to make sure the pressure didn't go to high. Walter is a fabulous person and a great face of Petro Home Services. We will be requesting him year after year. Also we are very pleased with Petro overall. Friendly, courteous and very helpful."
Recommended by80%of homeowners
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Install Boiler FAQs, answered by experts

You can replace baseboard heaters with many other types of HVAC systems, including forced-air furnaces, hydronic heating, and heat pumps. Each one has its advantages and disadvantages, so the best choice for you will depend on your budget, preferences, and the design of your house. If you aren’t sure which option is right for you, ask an HVAC pro for guidance.

The radiators closest in proximity to the boiler heating system will heat up first. Radiators in rooms farther away from the boiler will take longer to heat up and may be the coolest rooms in the house. The radiator unit itself should heat up evenly; otherwise, there may be trapped air inside it.

Boilers are equipped with multiple safety features to ensure safe operation. These include pressure relief valves to prevent overpressure, temperature high-limit switches to avoid overheating, and flame failure safety devices in gas boilers to cut off the gas supply if the flame goes out unexpectedly. Low water cutoffs prevent operation with insufficient water levels, and pressure gauges help monitor pressure levels. Ventilation and flue systems prevent the buildup of harmful gasses. Boilers often feature error code systems for automatic shutdown during malfunctions and gas leak detection for safety. Regular maintenance is crucial to ensure these safety features function correctly.

Yes, you can build a sunroom addition to your home despite living in a cold climate. Make sure to use high-quality insulation and windows and to supplement with sufficient heating from your HVAC system. The windows in the sunroom allow enough natural light into the room to help heat it most times without having to use the furnace. Even a small electric fireplace can heat the sunroom well enough.

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.

The Nantucket, MA homeowners’ guide to boiler installation services

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