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Best boiler installation pros near Sunnyvale, CA

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    Average homeowner rating
  • Verified reviews icon1.8k+
    Verified boiler installation services reviews

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

Avatar for DUKES HEATING & AIR CONDITIONING
DUKES HEATING & AIR CONDITIONING
4.8(
135
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Sunnyvale, CA and surrounding areas

Approved

In business since 2005

Free estimates

Emergency services offered

"Great. They contacted me right away. It wasn't an emergency but Iti was cold, so they still came first thing on the first business day. The technician explained what he was doing and why the prior repair done by somebody else probably failed. The rate was reasonable. It's been a couple of days and it seems the furnace is working, so everything good so far."
Heat Pump Repairs & Installations
Central Air Cut-Ins
Electric Furnace Repairs & Installations
Response time1 day
Response rate100%
32 neighbors recently requested a quote
Avatar for Comfort Energy Inc
Comfort Energy Inc
4.6(
120
)
Gas Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install - For Business

Serving Sunnyvale, CA and surrounding areas

Approved

In business since 2003

Free estimates

Emergency services offered

"I'm super glad I took advantage of this offer. James Hayden came out to my house and did a thorough inspection on my furnace that was probably from 1970. He had the tools and equipment to be thorough, and I found him super knowledgeable and friendly. James found very high CO levels in my exhaust and recommended that I not run the system until we got this resolved. For the safety of my family, I'm so glad he had the tool to measure CO levels, and that he identified the safety problem."
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+12

Response time1 day
Response rate100%
11 neighbors recently requested a quote
Avatar for Lorenzo Heating & Cooling
Lorenzo Heating & Cooling
5.0(
1
)
Gas Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install - For Business

Serving Sunnyvale, CA and surrounding areas

Approved

In business since 2021

Free estimates

Warranties offered

We are committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.

AC on roof
AC/FURNACE REPLACEMENT
Heat Pump Mini Split
Air Handler
Air Handler

+8

Response time1 hour
Response rate91%
Avatar for HVAC Utor Services
HVAC Utor Services
5.0(
31
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Sunnyvale, CA and surrounding areas

In business since 2010

Free estimates

Emergency services offered

"Diego and his crew are exactly what you would wish for when you need an hvac related service. After over 10 calls to other companies Rachel and Diego were the only ones willing to work with us on a time restricted job. We sold our house and needed work done on our furnace for the new buyers. They are always available when you call them, and the job gets done when they say it will be. Price quotes were straight forward and reasonable compared to other finished job prices I see listed here. Loved them so much I recommended my mother in law use them to replace her heat/ac units in her big house where we temporarily live, another positive review to come!"
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+24

Recommended by100%of homeowners
Avatar for Bell Brothers Plumbing Heating & Air
Bell Brothers Plumbing Heating & Air
4.6(
401
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Sunnyvale, CA and surrounding areas

In business since 1954

Free estimates

Warranties offered

"Had a wonderful experience when Joaquin, Ben and Anthony of ABC Cooling, Heating & Plumbing came out to install my mini-split heat pump unit this week. Professional, respectful, skilled at their craft, and with attention to detail. They communicated clearly, kept mess to a minimum, and cleaned up thoroughly after themselves. Highly recommended!"
AIR CONDITIONING REPAIR
The AC repair company in Sacramento and the East Bay who gets it done right the first time.

When you need an air conditioning repair, you deserve on-time service, upfront pricing, and friendly technicians that you’re comfortable having in your home. At Bell Brothers, we’ve been doing exactly that for 30 years.
There comes a time in the life of any furnace and heating system when continuing to repair and maintain it is no longer cost effective.

We can install a new, more energy-efficient heating system that keeps you comfortable and saves on energy costs. You’ll love the guarantees we give with every furnace installation, including:

Installation Workmanship Guarantee
‘No Lemon’ Guarantee
Guaranteed Upfront Quotes
AIR CONDITIONING REPLACEMENT
When you need a new air conditioning system, it’s not the time for guessing if you’re getting the best replacement experience. You need to know FOR SURE.
WATER HEATER REPAIR OR REPLACEMENT
No hot water in your home? Is there leaking, dripping, or staining around your water heater? Don’t panic. But don’t wait either. Call Bell Brothers, Sacramento and the East Bay’s top-rated water heater repair & replacement company.
Air Conditioning Service, Repair, & Installation With REAL Guarantees & NO Surprises. 
We have 9 guarantees, and all of them are in writing. This kind of protection is true peace of mind:

Homeowners love our No Surprise Guarantee: the price we quote is the price you pay. You’ll never have to be worried about being shocked by the final invoice. We have other great guarantees, too:

+5

Recommended by94%of homeowners
Avatar for Green Apple Duct Cleaning
Green Apple Duct Cleaning
5.0(
18
)
Boiler or Radiator Heating System - Install or ReplaceElectric Boiler or Radiator Heating System - InstallGas Boiler or Radiator Heating System - Install+3 more

Serving Sunnyvale, CA and surrounding areas

In business since 2016

Free estimates

Credit card accepted

"Great! Tony called in advance & was very prompt. Personable and professional, he quickly hooked up his equipment and let the machines do their work, which took about 30 minutes for our 1400 SF house. He took photos of the intake duct so we could see their condition. I will be scheduling a manual deep cleaning of the whole system next!"
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+18

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

Propane is more cost-efficient than natural gas on a per-unit basis because it produces twice as much heat energy as an equivalent amount of natural gas. But propane is not ideal if you already have a gas line installed. The best choice for your home depends on the efficiency of your appliances and the amount of installation required of your fuel choice.

The cost-efficiency of baseboard heaters depends on the type and how you use them. Generally, standard electric baseboard heaters can be expensive to run because they use electric resistance heating, which is less energy-efficient than systems like forced-air or heat pumps. However, hydronic and gas versions are typically much cheaper to operate. Hydronic models are more energy-efficient because they heat a liquid that retains warmth longer, preventing the thermostat from turning on and off as often. The overall running cost is also influenced by local electricity rates, your home's insulation, and your usage habits. To increase efficiency, you can use baseboard heaters for zoning, meaning you only heat the specific rooms you are using.

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.

A furnace takes in cool air, heats it through the burner and heat exchanger, and sends the air on its way to warm your home. A boiler is a pressurized vessel that produces hot water or steam to heat the home and provide hot water. A boiler may or may not work together with a furnace.

Steam boilers require flushing at least every six to 12 months to keep them operating effectively for as long as possible. Depending on your water quality and frequency of use, you might need to do this more frequently. The flushing process helps to remove problematic buildup of sediments. While a boiler contractor near you can perform a thorough annual flush, learning how to drain the system yourself means you can do this monthly if you experience speedy mineral accumulation because of hard water. 

The Sunnyvale, CA homeowners’ guide to boiler installation services

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