The Carlson Mechanical Difference benefits Seattle-area homes and businesses

Seattle radiant heat

Carlson Mechanical specializes in the installation, repair and maintenance of radiant heat systems, boilers and indirect water heaters for the entire Seattle metro area, from Everett to Redmond to Renton.  

We provide residential and commercial service from installing new multi-zone hydronic heat systems to repairing turn-of-the-century steam heat to maintaining boilers. 

With customer service as our highest priority, our goal is to make working with us as stress-free as possible.  Whether we’re making a quick repair or installing a new heating system, we go all out to deliver a better value than other companies.

Efficient and reliable heating systems

The design and installation of your new heating system requires a high degree of skill and knowledge and our staff, with their 90 plus years of combined experience, has it.  We understand your new heating system will be a part of your home for decades to come so it needs to be designed and installed correctly.

That’s why our technicians combine new technology with proven methods to create an installation process that’s second to none.  The result is a dependable system you can count on to operate at peak efficiency while making your home more comfortable. 

Big enough for complex jobs & yet small enough for personal service

Carlson Mechanical is large enough for the most difficult jobs, yet small enough to provide the individual attention you want. All projects are completed with the same precision and passion, whether they are small residential jobs or large commercial projects.

Our fully stocked warehouse ensures a well-stocked truck, which means we always have what we need.  Being prepared is the sign of a mechanic who takes pride in his work.

Meet The Carlson Mechanical Team:

Mark Lee-Master and Commander

Mark Lee, Journeyman plumber with 27 years of experience, has been working for Carlson Mechanical since its beginning in the 1990's and the owner since 2005.  He's passionate about hydronic heating, customer service and the Minnesota Vikings. 

Tim Carlson

Tim Carlson, founder of Carlson Mechanical. A Journeyman plumber with over 40 years heating experience, he started the company to specialize in high quality boiler and hot-water heating. 

He now works at the company he started as a trouble-shooting and problem-solving savant.  

Dennis Dietzel

Dennis is an excellent mechanic with over 30 years experience working with boilers, hot-water heating systems, swimming pools of all types and oil-fired equipment. 

He shines at customer service and has been an important part of Carlson Mechanical since 2007.

Riley Cartwright

Riley has been with Carlson Mechanical for over 8 years now. His talents as a mechanic include producing some of the most beautiful mechanical rooms in the Puget Sound.

His attention to detail will turn a Ho-Hum boiler room into a room which the homeowner will be proud. His high priority on customer service makes him very popular with customers.

Shirley Miller

Shirley is the ‘voice’ and office manager for Carlson Mechanical. She’ll listen to your needs and schedule service for repairs or maintenance on your boiler system.

Her years of experience in customer service will guarantee a pleasant experience all around. In short, she keeps the office running smoothly which benefits us and our customers.

James Dinnie

James joined Carlson Mechanical in October of 2015. He is a state certified journeyman plumber with 20 years of plumbing experience under his belt.

With a "can do" attitude and strong emphasis on customer service, he fits right in with the rest of our staff. We’re happy to have him as a part of our team!

Cody Just

Cody started in October of 2016. He has several years of experience as an automotive mechanic with emphasis on emissions, electrical work and welding.

Mechanically inclined and an enthusiastic learner, he has done extremely well in his training for boiler and radiant heating systems. He’s a great asset to our growing business!

The Truck

I really appreciated the time you took to answer all of our questions, assisting with the planning and placement of the radiators, the constant communication about the status of our project. . . I have nothing but good things to say about Carlson Mechanical.

- Melissa Carr

We fix what others can’t

ToolsOur technicians work on a variety of radiant heating systems, boilers, water heaters and related equipment so we have developed a deep understanding of how things works.

This knowledge is why Carlson Mechanical is often called in to solve a problem when other companies have failed. Our expertise allows us to quickly diagnose the situation so we can get to work fixing it.

Seattle Radiant Heat Systems

Service after the sale

While other companies let customer service slide after they’ve gotten the sale, Carlson Mechanical is devoted to maintaining the same high level of service throughout the entire process. 

Communication is key to our success.

  • Easy to understand estimates
  • Clear and concise answers to your questions
  • Follow-up after completion of project

Our focus has always been on taking care of the customer before, during and after the sale.

Seattle Radiant Floor Heat

Clean, Prompt and Courteous

As you read through the testimonials on this website, you'll see our technicians pride themselves on their professional conduct. 

From their on-time arrival to their flexibility when working with other contractors and accommodating changes in your schedule, our staff maintains their cheerful demeanor while working to complete your installation or repair on time.

The best part?  They clean up after themselves so you can just relax.