Washington is our home and we pride ourselves on the service that we give to our friends, family and neighbors. Learn about our long history and reputation for excellence as we've lead the HVAC industry in the greater Puget Sound area for over 40 years.

Our History

MM Comfort Systems got its start back in 1977 as B&B Heating.  Within just a few years, their exceptional reputation led them to be recognized as the National Residential HVAC Contractor of the Year.  In 1993 they joined with a leading Seattle mechanical contractor, also nationally honored for their history of quality dating back to 1965.  

The name MM Comfort Systems was established when key employees purchased the residential portion of the company in 2001.  A few years later, building on 51 years of expertise in serving residents of Tacoma and Pierce county, Heritage Heating and Rite Way Gas became part of MM Comfort Systems and a second location was opened in Sumner.  

With the vision of being the most desirable home services contractor in Western Washington, MM Comfort Systems has continued to welcome other well established, reputable locally owned companies into the brand.  These companies include G&S Heating & Cooling of Everett, Sullivan Heating of Bremerton, Comfort Mechanical of Auburn and Scribner Electric of Kirkland.  

MM Comfort Systems has been built on a solid foundation of excellence. Because of the associations we’ve chosen over the decades, we are confident in our mission to discover and deliver on the expectations of our customers.

mmcs building

Why Choose MM Comfort Systems?

The reason we keep our customers for life is because of the way we conduct our business.
Keeping people comfortable in their homes since 1977
Experts in all facets of HVAC: design, installation & service
NATE Certified Technicians and ongoing industry standard training
Background screened and drug tested employees
Shoe coverings, dropcloths and clean jobsites
Quality installations that exceed industry standards
Proven HVAC products from industry leaders
5 year labor warranty on all new equipment
Employees empowered to do the right thing
Review ratings that lead the industry
Follow up calls after every install
We do all we can to discover and deliver on your expectations

Our Promise

MM Comfort Systems is dedicated to ensuring that your heating, air conditioning, and water heater services are done professionally. Our goal is to create a comfortable living environment while maximizing efficiency of your comfort system. Our commitment includes a satisfaction promise to all our customers, no matter how big or small the project may be.

Your satisfaction and comfort are our primary concern. If for any reason you are not completely satisfied with our service, contact us and we will do everything we can to make it right.

Ryan Rastetter


Our Accreditations

ACCA Quality Assurance Accredited
Snohomish Registered Trade Ally
Snohomish County
North American Technician Excellence Certified
NATE award
Accreditated Business
MM Comfort Systems BBB Business Review
Carrier Authorized Dealer
Angie's List Super Service Award
MM Comfort Systems believes your comfort should never be compromised. Over the years, we’ve finessed our delivery of HVAC products and services to a unique level of service we’ve become known for: #FixitFast #InstallitRight
Years Experience
Installations Completed
Comfort Club Members

“Super friendly”

The install was completed today and I have to say the guys were pretty amazing. Super friendly, cooperative, easy to ask questions and very thorough.

Tom W.


“Very knowledgeable”

Tech did a wonderful job during these trying times. Very knowledgeable and completed maintenance timely. Pointed out some issues that were never addressed to us previously.

Pam B.


“Very Helpful”

Everyone that I interacted with was professional, informative, and very helpful. They answered all my questions and addressed any concerns I had. I really appreciate how quick the whole process was.

Terry R.


“MM had a top-rated product at a good price”

Evaluated several companies. MM had a top rated product at a good price. Install was seamless, system works superbly.

Jerry L.



Our Office

Office: M-F 8am - 5pm
Services: 24/7
9680 153rd Ave NE,
Redmond, WA 98052

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