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With over 30 years’ experience working in the heating and cooling industry in Seattle, Renton, Auburn, and the surrounding areas, Custom Radiant can help educate you on the most efficient, economical, preferred brand of boiler that would best work for your home or business. We offer many boiler services from layout and designing of new systems with installation or replacing new ones, to servicing and repairs and maintenance. Our boiler experts are ready to help you with your heating needs and we do offer 24/7 emergency service.

At Custom Radiant our preferred brands of boilers are Viessmann and Buderus, which can be gas, oil, and electric. Basic to fully automated for both residential and commercial owners. It is our pleasure to help you select the right model for your home or business by assisting you in deciding which will be more efficient, economical, along with other factors, such as the load calculation for the hot water being used to make an educated choice.

We offer many boiler services from layout and designing new systems with installation to meet your specifications or replacement of old ones, service and repairs on all brands, and maintenance.

Boiler Before


Boiler After


If you’ve noticed problems with the temperature in your home or business, such as the system turning on and off, resetting itself, or just not turning on at all, call us. It may be as simple as a fix with the thermostat unit itself, but we will ensure that you get prompt quality service and fewer troubles with your boiler.

The boiler experts at Custom Radiant are ready to find the right solution to meet your needs. Whether it’s professional advice, repair and/or maintenance on an existing boiler, or installation of a new system, we’re here to help. We repair all makes and models, whether we installed it or not, and offer 24/7 emergency service.

Benefits of Yearly Service Agreements:

Talk to your technician or contact us to learn more about our service agreements and how they can help you!

Preventative Maintenance

Extend the life of your equipment and prevent costly repairs. Let us promote a safer environment for your dwelling by conducting a yearly cleaning and safety checks.

Priority Service

We will provide you with normal and/or emergency service before non-priority service customers.

Cost Savings

You will not be billed additional trip charges & in the event of emergency services you will incur no after hour fees.


Upon your written notification, service agreements are fully transferable to the new owner.


Don't forget to talk to your technician to see if you qualify for rebates. Click here for more information.

For boiler service

call us now at 206-604-7530