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TRUSTED BY KAPAA, HI HOMEOWNERS

  • Average homeowner rating star icon4.6
    Average homeowner rating
  • Verified reviews icon32
    Verified boiler installation services reviews

Verified Reviews for Boiler Installation pros in Kapaa, HI

*The Angi rating for Boiler Installation companies in Kapaa, HI is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Boiler Installation needs.

*The HomeAdvisor rating for Boiler Installation companies in Kapaa, HI is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Boiler Installation needs.

Last update on June 19, 2026

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

Avatar for Paradise AC
Paradise AC
5.0(
7
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Kapaa, HI and surrounding areas

In business since 2021

Free estimates

Credit card accepted

"Lance is awesome! He’s easy to work with, gets things done quickly & super nice! We’d recommend him to anyone looking to install ACs! We had a minor issue with one of our units and he was out immediately and fixed it right up!"
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+44

Recommended by100%of homeowners
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AN A/C Clean
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 Kapaa, HI and surrounding areas

In business since 2020

Free estimates

Emergency services offered

We have the experience and dedication to bring your dreams to reality! Specializing in Heating and A/C Services, we guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Call or click to schedule a free estimate today!\n*5% DISCOUNT FOR MILITARY DISCOUNT!

Spraying a mold/ algae inhibitor onto the fins for an extra clean finish. Cassette has been sprayed out and additionally treated already.
Preparing cassette unit for cleaning
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+2

Recommended by100%of homeowners
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Avatar for Ultimate Air Conditioning
Ultimate Air Conditioning
5.0(
4
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Kapaa, HI and surrounding areas

Emergency services offered

Credit card accepted

Our mission is to be a provider that brings back the personal touch with our customers. We will build a relationship that will last a lifetime once you see our quality work. We're passionate about delivering an exceptional experience. When you hire us, you're hiring a team of professionals who are trained and skilled to deliver lasting value to your home. As a locally owned and operated business we feel invested in our clients and constantly strive for customer satisfaction. We won't leave until the job is done right! Call or click to schedule an estimate today!

2nd central AC outdoor unit complete
Before and after
Completed installation of a Daikin outdoor condenser
First WiFi thermostat installed
After power washing the unit, this is the dirty/moldy water coming out into the bucket

+36

Recommended by75%of homeowners
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W.Labanon Home Repair and Services
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 Kapaa, HI and surrounding areas

In business since 2019

Emergency services offered

Credit card accepted

Thank you for your interest in W.Labanon Home Repair and Services! We operate on the island of Kauai and specialize in the maintenance and management of repair projects around the home. I will work with you directly from estimate to completion and can provide a variety of services. Please contact directly and thank you for your interest!

Recommended by100%of homeowners
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Avatar for Leo’s Painting
Leo’s Painting
4.7(
6
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Kapaa, HI and surrounding areas

In business since 2006

Free estimates

Emergency services offered

We are a small local Painting Company who strives for excellence. We offer reasonable prices with outstanding results. We accept cash, check, and credit card payments. Call today for a free estimate.

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+31

Recommended by83%of homeowners
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Avatar for Universal AC Inc
Universal AC Inc
5.0(
3
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Kapaa, HI and surrounding areas

In business since 2022

Credit card accepted

Who We Are\nCOMMITTED TO EXCELLENCE\n\nUniversal AC Inc. is a local leading and reputable HVAC Company serving the Hawaii area. We have over 15+ years experience in commercial and residential HVAC service, installation, and repair. We’ve taken a comprehensive approach to project management, providing our clients with a wide range of services to cover their needs. Get in touch today to learn more about what we can offer you and to receive your free estimate.\n\nWe also offer 10% Military Discount

Recommended by100%of homeowners
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Avatar for GPV SERVICES LLC
GPV SERVICES LLC
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 Kapaa, HI and surrounding areas

Free estimates

Emergency services offered

"Very well. He arrived on time, inspected the doors and got right to work. Install worked perfectly."
Replace new window
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+10

Recommended by100%of homeowners
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Avatar for Indoor Air Quality
Indoor Air Quality
5.0(
3
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Kapaa, HI and surrounding areas

In business since 2022

Free estimates

Emergency services offered

Indoor Air Quality is locally owned and operated out of Moanalua Valley, Oahu. We Specialize in fixing and maintaining all forms of Air conditioning equipment to get it back in shape for the hot days to come.\n\nMy staff and I have been servicing air conditioning equipment for 10+ years. We have recently moved away from big business to start our own small business that is more affordable for the consumer.\n\n

Black spots= biological growth
Dark areas of foam is biological growth and dust
Chemicals use during Indoor air handler deep clean.
Indoor coil deep clean
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+3

Recommended by100%of homeowners
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Install Boiler FAQs, answered by experts

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.

An HVAC system typically lasts between 10 and 30 years, with an average lifespan of 15 to 25 years. The longevity of the system is influenced by factors such as the quality of the unit, usage frequency, local climate, and how well it is maintained. Regular maintenance, including cleaning, filter replacements, and professional inspections, can help maximize its lifespan. Different components within the system have varying life expectancies. For example:

  • Furnaces: 15 to 30 years

  • Boilers: 20 to 35 years

  • Air Conditioners (AC units): 12 to 20 years

  • Heat Pumps: 10 to 20 years

  • Ductless Mini-Splits: 10 to 30 years

Most home boilers will need an expansion tank. That’s because these boilers are closed-loop systems, where the water is trapped. An expansion tank is needed when the boiler heats the water and it expands, allowing air to condense in the tank to make room for the water. Other types of boilers don’t use an expansion tank, such as traditional steam boilers, but these aren’t as common. And hot water tanks may be able to use a pressure release valve instead. When in doubt, call in a pro to take a look.

Generally, an oil furnace is considered safer than a gas furnace for several reasons. While both types of furnaces can produce carbon monoxide, a leak in an oil furnace is easier to detect due to the smell. Oil furnaces also don't connect to a gas pipeline, which reduces the chance of a fuel leak. Most importantly, heating oil is not combustible, whereas natural gas is highly flammable. This means there is a much lower risk of combustion or explosion with an oil furnace. However, an oil furnace can still pose a fire hazard if it tips over.

On average, you’ll need about two gallons of oil per day to heat your house when it’s 50 degrees Fahrenheit outside. Most oil tank capacity is about 275 gallons, and heating your house with two gallons of oil per day will last about four and a half months. This consumption will vary depending on the climate and average temperature in your location. For example, if the winters are longer and colder where you live, you’ll probably need to refill your oil tank at least once to get through the winter.

The Kapaa, HI homeowners’ guide to boiler installation services

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

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