Boiler Installation & Replacement In Spokane | Mainstream

Boiler Installation and Replacement in Spokane & Spokane Valley

A boiler is a vital heating source for most homes in the winter. With winter weather dropping to 20 degrees, having a warm home is essential.

Mainstream’s team of experts can help you determine the best option for your home. We offer a selection of boilers that will fit your needs and budget, with financing options available.

*** Important Note! ***

Due to a new government regulation going into effect in 2023, new HVAC systems will come with increased prices. This means that if you have an older heating system, now is the perfect time to replace it because you'll be getting a fantastic price that wont come back.

This deal only lasts as long as we have 2022 HVAC systems in stock and is first come, first serve. Once we are sold out of 2022 systems, our inventory will change to pricier 2023 models exclusively.

Types of Boilers Available

Your boiler is a large, complex unit that will deliver years of exceptional heating to your entire home. So, it is important that it's installed correctly, otherwise, this costly investment can go to waste.

Although multiple factors determine the overall cost of new boiler installation, the type of boiler you choose has the largest impact. Our expert HVAC technicians at Mainstream will help you find the boiler that's best for your home and budget.

Traditional Boilers

Traditional Heat-Only Boilers have a two-tank system. One tank stores cold water, and the other is used to maintain the normal water level of your home’s central heating system.

One benefit of having a traditional boiler includes keeping up with a Washington winter's heating demands. Even if you have low water pressure from your mainline, there is no drawback to the capability of the traditional boiler. Traditional boilers are also compatible with older heating systems.

However, owning a traditional boiler can take up a lot of space, and you will lose more energy than alternative options if the tank is not insulated properly.

Combination Boilers

A Combination Boiler system combines a central heating boiler and a high-efficiency water heater. The system doesn’t need a cylinder to store the water because the combination boiler heats the water directly from the mainline.

Cost estimates for combination boilers tend to be lower than traditional boilers because they are smaller, more efficient, and less complicated.

Another reason to consider a combination boiler is that there is no need to worry about water pressure. Plus, hot water is on-demand because it is heated directly from the mainline rather than in a storage tank.

System Boilers

System Boilers accomplish the same task as a traditional boiler, but in a more energy-efficient way. These types of boilers have a single-cylinder that stores hot water (like the traditional boilers) but the main difference is in how the boiler unit is constructed.

The hot water and heating system components are built into the boiler unit itself versus stand-alone units. This boiler system makes it simpler and easier to install - they do not require a separate tank to accomplish the same result.

One benefit of having a system boiler unit installed is that they are compatible with solar heating systems, making them more energy-efficient than alternative options. 

If you are looking for the best boiler specialists, give Mainstream a call! We’ve been servicing the Spokane area for over 20 years. If you need a properly installed boiler that’s the right fit for your home, we are the right ones for the job!

Boiler Installation FAQs

The average boiler has a lifespan of up to 15 years. This timeline varies based on the condition and usage of the equipment. It’s recommended that you schedule annual maintenance and call a professional as soon as you notice your boiler isn’t running efficiently.

Check out why your neighbors trust us to get the job done right

Very personable and patient!

Both technicians that came to our home were great! They were very personable, and very patient. My mother in-law has a hard time with her English, as it is her second language, but they were both very patient with her, and made sure she understood everything that needed to be done. On their customer service alone I would recommend this company. We live in an old 1980's trailer which made it hard to find parts needed to fix our heating system, but they did all the research they could to try and find the parts needed. I am so glad I decided to call Mainstream Electric and will continue to use their services in the future.
Analee B.


Cody was respectful, personable, courteous, answered all our questions we had during his visit, knowledgeable. Cody helped us get in touch of the appropriate people, to finance the work that our home needs. He helped get the work scheduled so that we wont need to wait longer to get the work taken care of.
Crystal N.

Highly Recommend

The entire team was very responsive and nice. Handled scheduling quickly. Process was clearly outlined at multiple points in the job to ensure expectations were being met. Took 48 hours from time I reached out to complete issue resolution. Highly recommend
Jenn C.


Jaymin was very professional and friendly. Was knowledgeable and got right down to business. Did a great job! He deserves a KUDOS!! 👍 Daryl was also very professional and friendly. He was knowledgeable and explained the problem very clearly. He's also a good salesman! KUDOS to him, as well!! 👍
Judy W.
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Choose Mainstream for all your boiler needs

We believe in providing you with the best home services experience possible. Our experts are licensed, fully trained professionals who guarantee 100% satisfaction.

We value communication and respect your time. When you book with us, you’ll receive a call confirming the exact time our technicians will arrive.

Call us at (866) 411-9277 or contact us online to set up a hassle-free appointment today!

Special Offers in Spokane Valley, Washington

FREE Service Call with Repair

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Call for Conditions & Restrictions / Present Coupon at Time of Service / Not Available to Combine with Other Offers
$79 Once a Year, You’re in the Clear HVAC System Checks
Original Price: $ 129
Savings:$ 50
Sale Price:$79

Super convenient Heating & AC Check. Why are checks important?

  • Keeps your systems running at peak efficiency
  • Helps prevent unexpected breakdowns
  • Extends the life of your equipment
  • Keeps your family safe from carbon monoxide leaks

Schedule Now
Call for Conditions & Restrictions / Present Coupon at Time of Service / Not Available to Combine with Other Offers
$79 Off Any Repair

Schedule Now
Call for Conditions & Restrictions / Present Coupon at Time of Service / Not Available to Combine with Other Offers

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