HVAC
Design | Installation | Service
Furnaces
Air Conditioning
Heat Pumps
Ductless Systems
Emergency Service
Duct Cleaning
Indoor Air Quality
Maintenance
Commercial
New Construction
Plumbing
Service | Repair | Installation
Water Heaters
Toilets
Faucets
Garbage Disposals
Water Filtration
Plumbing Inspections
Leak Repairs
Re-piping & Gas Piping
Hose bibs
Sump Pumps
Electrical
Design | Installation | Repair
Generators
Panel Upgrades
Car Charging
Landscape Lighting
Commercial
Low Voltage & Data
Security Systems
Hot Tub & Sauna wiring
Inspections
New Construction
HVAC, Heating, Cooling, Plumbing and Electrical Services throught the Seattle-Tacoma Metro Area for Over 45 Years
We take care of all the essential systems (HVAC, Plumbing & Electrical) in your home or commercial property that keep you comfortable, so that they’re safe, efficient and reliable.
Covering All the Essential Home Services
Our company will take care of all the essential services and systems in your home that keep you comfortable like HVAC, plumbing and electrical services. The experts at Home Comfort Alliance make sure your heating, cooling, plumbing and electrical systems are safe, efficient and reliable.
Home Comfort Solutions and Efficiency
Home Comfort Solutions is dedicated to ensuring that your home services are done professionally. Our goal is to create a comfortable living environment while maximizing efficiency of your HVAC, heating, air conditioning, plumbing and electrical systems. Our commitment includes a satisfaction promise to all our customers, no matter how big or small the project may be.
Why Choose Home Comfort Alliance?
Your Comfort is Our Promise
We promise the comfort of
dependable heating,
air conditioning, plumbing,
and electrical services,
all from one trusted company.
dependable heating,
air conditioning, plumbing,
and electrical services,
all from one trusted company.
Our promise that you will feel comfortable with the people working in your home because they're knowledgeable, respectful, trustworthy, and tidy.
We promise the comfort of
being offered the right options
so you can find the right solution,
at the right price.
being offered the right options
so you can find the right solution,
at the right price.
Our promise of outstanding service,
communication, and follow-up,
so you're comfortable now
and for years to come.
communication, and follow-up,
so you're comfortable now
and for years to come.
It's a promise we've kept with thousands of homeowners across Western Washington
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Your Local Home Comfort Specialists
At Home Comfort Alliance, we want you to spend time enjoying all the things that make your home, home, and we’ll make sure it’s comfortable for everyone who’s there. We asked our customers what “home” means to them, watch what they have to say.
A Highly Accredited Alliance of Companies
A Brief History
Home Comfort Alliance
This timeline is a historical journey of each company and how we became Home Comfort Alliance.
The beginning
B&B Heating is founded and within a few short years, they are recognized as the National Residential HVAC Contractor of the Year serving the greater Seattle-Tacoma area.
Starting with just 2 employees, GS Heating, Cooling & Electrical is founded in Everett and ultimately grows to a team of 50 while staying true to its "service first" beginnings.
Sullivan Heating
Sullivan Heating opens its doors serving Kitsap and Mason counties and builds a reputation of integrity and quality workmanship.-
Comfort Mechanical Services
Comfort Mechanical Services is established providing commercial HVAC services to the greater Puget Sound area. 
MM Comfort Systems
Key employees at B&B Heating purchase the residential side of the business and rename the company MM Comfort Systems.
Scribner Electric
Scribner Electric is established and quickly develops a reputation throughout King and Snohomish counties for professionalism and high-quality workmanship.-
MM Comfort Systems acquires Heritage Heating
MM Comfort Systems acquires Heritage Heating of Tacoma and RiteWay Gas of Auburn and opens a second location in Sumner. 
A new transformation
MM Comfort Systems is acquired by local community members with a vision of becoming the most desirable home services contractor in Western Washington.-
Joining together
MM Comfort Systems and GS Heating, Cooling & Electrical join together becoming the first two companies of Home Comfort Alliance. -
Growing Further
MM Comfort Systems purchases Scribner Electric, providing more electrical services to residential and commercial customers.
Sullivan Heating and Comfort Mechanical become part of the family of brands, adding a commercial division and extending services throughout Washington's peninsula. -
Alpine Aire Joins
Alpine Aire of Wenatchee is acquired, bringing the promise of comfort to homes east of the mountains. -
Home Comfort Alliance is established
A rebranding initiative introduces Home Comfort Alliance to represent the joining together of all our companies delivering the comforts of home.
- 2022
- 1977
- 1994
- 1999
- 2001
- 2008
- 2009
- 2015
- 2018
- 2020
- 2021
- 2022
What our Customers are Saying!
Zach & Jeremy came in to replace a furnace and install a new heat pump. We went with the Carrier Infinity system and they did a really professional job with the installation. They were prompt, on time and courteous. They did a good job and everything passed inspection without any issues. Plan on using MM Comfort Systems for all our HVAC repairs and maintenance.
Justin Wendlandt (jwendl)
16:55 10 Aug 22
Great!
Gayle Detweiler
20:52 08 Aug 22
Really pleased with my experience. Installation was timely, the staff were knowledgeable and our AC works great. Pricing was transparent and reasonable for what we get. Not sure what else you can ask for.
Alex Hogan
16:27 08 Aug 22
The mini split system we purchased works great! I have lived in this house for over 40 years and expected the system to be good, but this is fantasic! We purchased through Costco and got a great price. The installers Mikel and Ina were efficient and friendly. They left the areas where they worked completely cleaned up! I highly recommend MM Comfort Systems!!
Mona Wiles
15:26 08 Aug 22
We had A/C installed on one of the hottest days so far of the summer. The installation team worked so hard in the heat and did an amazing job. Great experience all around. Thank you!
Anna Bisch
05:16 08 Aug 22
We ordered our mini-split duct a/c system from Costco, who used MM Comfort Systems as the provider. MM did a great job, especially our two installers, Matt and Alex, along with Jennah and Hannah in the office. thanks.
Hugh Lawrence
19:37 07 Aug 22
Sam and Antonio did a great job with our installation. They answered all of our questions patiently and finished the job without any issues. I highly recommend them and MM Comfort Systems.
Abhishek Uppalapati
16:35 04 Aug 22
Billy Reese
02:03 02 Aug 22
This is the second time I've hired MM Comfort Systems, first time was through costco, 2nd time I reached out directly. They replaced an old furnace and installed a new AC. They were professional and on time. When they got here they looked through various parts of the ceiling and wall to determine a least intrusive way to route the AC coolant lines. Their patchwork was also well done aesthetically. They installed the components and AC was up and running within 8 hours. Drew and Jason did a great job with the unit, I have already recommended MM Comfort Systems to some neighbors.
Drake Hei
23:18 28 Jul 22
I'd like to split my review into two parts, the actual installation, and the process leading up to it. The day of installation and our techs Randy & Clinton were amazing, very professional, quick, and responsive. Our units work perfectly and the installation was painless.However, the lead up to installation was a real pain. I had to go back and forth several times with the initial planner because they kept sending docs that had the AC Units in the wrong place and were missing key elements needed for our HOA approval. In general, our representative was non responsive and I had to call customer service several times just to get them to respond to an e-mail. I understand that this is an insanely busy time in Washington for HVAC installation, but this part of the process was a pain through and through.Overall, the end result is great, so I can't complain too much, but be prepared to have to do some legwork in the lead-up.
Ashton Macaulay
16:22 28 Jul 22
Jonny was a great electrician. He went an extra mile to teach us about the generators and other safety and practical tricks. Really satisfied with his work. The company provided a better bid than several others bids. Very satisfied
Sid H. Siahpush
00:12 28 Jul 22
Sam & Zach installed my new Heater and AC system on time for this year's hot weather. They were very professional and he seems to be very detailed oriented in making sure the installation not only done properly but looked good , even facing the PVC pipe printing to towards the back. I used this company when I purchased my new heating and cooling system VIA Costco. I will highly recommend their services for others. Although the installation took a while to schedule due to their busy schedule and lack of supplies I was told. I choose the high efficiency furnace this time to save on gas and energy. Now waiting for my $2,300 refund.
Jeremy Mseitif
17:16 26 Jul 22
We're delighted with the expert HVAC installation by Mike & Jeremy of MM Comfort Systems. Especially pleased with their suggestions to change locations of outdoor compressor and one indoor unit that work much better than what salesman had advised.
Joy W
20:54 23 Jul 22
Kelly Kjostad
20:44 21 Jul 22
Cornell Daia
03:17 20 Jul 22
We had MM Comfort Systems install a whole house water filter and a new water heater along with installing a new kitchen faucet and a new pressure regulating valve. Chris and his apprentice did a great job. They work was clean and has performed well. We had an issue with the hot water circulation pump but Chris made the corrections. Only reason for the 4 stars is that it took quite a while to get the proposal for the work.
Ross Tanner
04:06 18 Jul 22
Recently had heat pump with mini-split units installed. Luis and Mario arrived on time each day, were considerate and professional. When a change was required, Luis explained why and what the change would entail. The work was completed in a timely way and they made sure all the units were working before they left. They picked up after themselves and left the site clean.
Kathy Carson
19:32 15 Jul 22
Got the AC and Heating system installed. Installation was done efficiently and on time. Mikel and Ina were absolute best with their work. Made everything easy, answered all the questions and kept it clean. Highly recommend MM.
shyam kumar nukala
20:51 11 Jul 22
Mikel and Ina installed our new gas furnace and thermostat. They arrived on time and worked through the morning. They kept us informed and showed us how the unit was different, how to change filters and use the new thermostat. The old unit and all materials were removed, everything was left in great condition.
Penny Blair
04:08 08 Jul 22
Family owned they've been taking care of us for 20 years
Tracy Sharpe
03:22 01 Jul 22
Advice from your Home Comfort Experts
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Have ALL the comforts of Home!
Stay informed with seasonal reminders, tips to prolong the life of your system, and the latest in comfort innovations.