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Best boiler installation pros near Caldwell, ID

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

Avatar for Magic Electric, Plumbing, Heating + Air- Boise
Magic Electric, Plumbing, Heating + Air- Boise
4.6(
237
)
Electric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - InstallOil Boiler or Radiator Heating System - Install

Serving Caldwell, ID and surrounding areas

Approved

In business since 2013

Emergency services offered

Warranties offered

"There were some minor problems with the installations - a leaking faucet (brand new faucet installed by Magic), and another brand new faucet that had the cold side quit working a day after they installed new feeder lines. However, in each case, Magic quickly sent a plumber out to fix the issues. Overall, they installed 3 new faucets, two new toilets, and four new sinks. We'll have them out again to put in a water line for our new refrigerator/freezer's ice maker, as soon as the appliance arrives."
Exterior Lighting
Residential Services
Ceiling Fan Install
Outlets and Switches
Whole Home Electrical Services

+2

Response time8 hrs
38 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for DIAMOND HEATING & COOLING
DIAMOND HEATING & COOLING
4.9(
154
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Caldwell, ID and surrounding areas

In business since 1999

Free estimates

Emergency services offered

"Diamond Heating and Cooling (Caden) always does a thorough and accurate assessment and repair (if needed). The company offers memberships, payment plans as well as discounts. Definitely call them for your Heating, Cooling, Plumbing, and Electrical services."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Additional Photos

+22

Response time1 day
Response rate100%
Recommended by97%of homeowners
Avatar for Innovative Mechanical Solutions, LLC
Innovative Mechanical Solutions, LLC
4.9(
41
)
Electric Boiler or Radiator Heating System - Install

Serving Caldwell, ID and surrounding areas

In business since 2021

Free estimates

Emergency services offered

"Was very knowledgeable and explained exerything. He did warranty his work. I am a little concerned that to this day I still have not heard back from him as to when the city of Nampa would be inspecting the new HVAC system that was installed."
Low Voltage Controls
Water Tower Control
480 volt HV MESS!!!
Unsafe Electrical Panel
Low Voltage Control Interface

+6

Response time10 hrs
Response rate91%
Recommended by97%of homeowners
Avatar for Driggs Plumbing and Heating
Driggs Plumbing and Heating
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 Caldwell, ID and surrounding areas

"Was recommended to us via Facebook. He responded immediately and was at our house within half hour on a Friday night. He was able to get our pilot light re-lit. Will definitely use him for future issues and reccomend him to anyone needing plumbing work!"
Recommended by100%of homeowners
Avatar for Ada Mechanical LLC
Ada Mechanical LLC
4.4(
36
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Caldwell, ID and surrounding areas

In business since 2004

Emergency services offered

Credit card accepted

"Contacted Tully's to have a service rep come out to discuss a problem with a heating/cooling issue in one room in our home. On 7/23/2010 Bow from Tully's came out and checked out our issue and discovered the ducting to this room was too small and explained the problem with me. Bow gave me a price to do the upgrade to the proper size ducting as well as adding an additional floor register to this room to correct the problem and I agreed to the price. Bow also discussed with me, via my request, about their yearly maintenance program on the furnace and A/C equipment. I also agreed to that as the price is very reasonable for what they do and peace of mind. Work was performed on the 28th which was very quickly scheduled (thank you Laura from the office) when Bow came back out and replaced the ducting with the larger size and installed the additional floor register. Bow's work is very professional, clean and neat and there was very little in the way of clean up when he finished. Now that room is nice and cool like the rest of our home and I'm sure it will be nice and warm this Winter and we will have no need for the portable heater that we had to use last year in there. I am happy to be a satisfied Tully's customer! Thank You Tully's!"
Recommended by87%of homeowners
Showing 1-10 of 28
Install Boiler FAQs, answered by experts

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.

Many HVAC companies offer free quotes and free estimates for repairs and new HVAC systems. Others offer low-cost quotes or apply the cost of the estimates or diagnostics to your final bill if you hire them. Be aware that some companies advertise free HVAC quotes and recoup the costs by charging more for their services. Free HVAC quotes are never truly free—they cost the company time and effort—so be a good customer. Also understand that you may end up paying for free quotes in another way if you don’t hire a reputable company.

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.

Overall, heating your home with an oil furnace tends to be less expensive than heating your home with an electric heating system. Oil heating systems stay warm for longer periods of time without drawing a constant electrical current to maintain a temperature. Plus, heating oil systems typically have a longer lifespan and lower price tag than their electrical counterparts, resulting in short- and long-term savings.

If you have a closed-system boiler that requires an expansion tank, you cannot safely operate it without one, as this risks extensive damage or even explosions. You must find a way to make room for the installation. Options include repositioning the boiler, rerouting the boiler piping to a more open area, or performing minor remodeling to create the necessary space. If you are unsure whether your boiler needs an expansion tank or how to best accommodate one, it's recommended to have a local heating service professional assess the situation. They can confirm the requirement and suggest the most practical solution.

The Caldwell, ID homeowners’ guide to boiler installation services

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