Frequently Asked Questions


What Is Your Service Area?

We serve Western Washington and parts of Eastern Washington. Here is a list of counties we serve:

  • Chelan

  • Clallam

  • Clark

  • Cowlitz

  • Grays Harbor

  • Jefferson

  • Lewis

  • King

  • Kittitas

  • Kitsap

  • Kickitat

  • Mason

  • Pacific

  • Pierce

  • Skamania

  • Snohomish

  • Thurston

  • Wahkiakum

  • Yakima


What Services Do You Offer?

Northwest Thermal Hydronics specializes in commercial and industrial HVAC systems. Here is a list of services we provide to our customers:

  • Boilers

  • Water Heaters

  • Piping

  • Pumps

  • Burners

  • Ovens and Autoclaves

  • Pool and Spa Boilers

  • Cooling Towers

  • Condensing Equipment

  • Preventative Maintenance

  • Combustion Tuning

  • Service, Troubleshooting and Repair

  • Installations and Retrofits

  • Combustion and Emissions Analysis

  • Inspections

Why Is Maintenance Important?

Maintenance provides many benefits to your heating system as well as reduces the risk of a breakdown or failure. Enhance your heating system’s life, safety, efficiency and reliability by providing a routine maintenance plan.

Not sure what kind of maintenance you need? Please give us a call with the manufacturer name, model number and serial number so we may determine what services you need at: (253) 863-1202


What Are Your Hours of Operation?

Northwest Thermal Hydronics is open Monday thru Friday, between 7:00am – 4:00pm. We can be reached by phone or email: (253) 863-1202 and


What Are Your Typical Costs of Your Services?

There are no set costs for our services at Northwest Thermal Hydronics. Because each system is unique with varying needs, we will provide an estimate or bill by time and materials for your service.


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