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Best boiler installation pros near Greencastle, IN

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  • Verified reviews icon75
    Verified boiler installation services reviews

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

Avatar for N and B HVAC
N and B HVAC
5.0(
8
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Greencastle, IN and surrounding areas

Approved

In business since 2019

Free estimates

Warranties offered

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 after you see our quality work. As a locally owned and operated business, we feel invested in our clients and constantly strive for customer satisfaction. Call or message us to schedule an estimate today!

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+17

14 neighbors recently requested a quote
Recommended by87%of homeowners
Avatar for North Alabama Technical Services
North Alabama Technical Services
4.9(
124
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Greencastle, IN and surrounding areas

In business since 2010

Emergency services offered

Credit card accepted

"Jim Farrell and North Alabama Technical Services rebuilt my computer and provided me with everything I expected and so much more.  He provided the various options in equipment, including specs and pricing, answered all our questions and helped us make the best decision for our purchases.  The computer was completed in a few days, far less than expected, the installation included clear directions for use.  The package also included a good warranty for the equipment.  I was extremely pleased with his service and would not hesitate to recommend his company to anyone with computer service needs."
2014 Super Service Award Winner!
Additional Photos
Recommended by97%of homeowners
Avatar for N&B HVAC -   Facebook
N&B HVAC - Facebook
5.0(
3
)
Gas Boiler or Radiator Heating System - Install

Serving Greencastle, IN and surrounding areas

In business since 1999

Free estimates

Credit card accepted

N & B HVAC LLC proudly serves it's customers with pride, integrity and attention to the details that matter most to you. This is one of the many things that sets us apart from the rest. We are locally owned and operated. Give us a call today!

Coil plugged
Old air conditioner
Old coil
New air conditioner
New coil

+7

Response time10 mins
Recommended by100%of homeowners
Next Generation Mechanical
5.0(
2
)
Gas Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install - For BusinessOil Boiler or Radiator Heating System - Install+1 more

Serving Greencastle, IN and surrounding areas

In business since 2022

Free estimates

Emergency services offered

Here at Next Generation Mechanical we take pride in being a local, family owned business. We live next to, and care about the people and businesses that we serve. We also take great pride in the experience, expertise, quality, and customer service that we provide, and whether it be service or replacement, we offer an honest assessment and a fair price. In order to accomplish our goals we know clear communication is key, so give us a call and let's discuss how we here at Next Generation Mechanical can help take care of you, our neighbor, and your HVAC needs.

Response time1 day
Showing 1-10 of 21
Install Boiler FAQs, answered by experts

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.

Scale from hard water is hard to diagnose until it starts causing problems. If your area has particularly hard water, that’s most likely what your boiler is using. If scale build-up becomes a problem, it starts to cause decreased flow and heating, and eventually, valve failures as valves become blocked. Let boiler professionals know if you’re worried about scale and they can offer advice or implement a solution.

Costs depend on system size, efficiency rating, and additional features like zoning or smart controls.

The average cost to replace or install a new HVAC system is around $7,500. However, the price can range from $5,000 to $12,500, depending on factors like the size of your home, the type and brand of the unit, and your specific heating and cooling needs. If you only need to replace certain components, the cost will be lower; for example, a new AC unit can cost between $2,200 and $5,500, while a new furnace costs $3,200 to $6,000. If additional work like new ductwork is required, the total cost could be as high as $22,000. It's best to contact a local HVAC company for an accurate quote.

It can take anywhere from four hours to three days to replace a boiler with a new one. How long your particular boiler installation takes will depend on whether you need a gas line installed and if you’re switching to a new boiler system. 

Replacing a combination boiler or standard boiler with the same system should only take four to six hours. Meanwhile, switching from a conventional boiler system to a combination boiler system could take a few days.

The Greencastle, IN homeowners’ guide to boiler installation services

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