Commercial HVAC
Design and Build Services

Our commitment to your commercial HVAC design & build goes far beyond merely meeting a schedule and staying within a budget. Before we cut a single piece of sheet metal, we carefully plan every aspect of the job, coordinating with other trades and figuring out the smallest details in advance.

Project Management

Our job is to make your projects go smoothly. If your project is not properly managed, a lot of things can go wrong: costs overrun, schedules slip, building occupants complain, and efficiencies are lost.

At Home Comfort Alliance, we understand, which is why we take a proactive and comprehensive approach to defining, designing, and delivering every project. We provide professional, trusted advisor Project Management designed to define and meet your expectations every time. We’ve been specializing in HVAC related projects since 1965, so we know buildings and we know how to get projects done on time and within your budget.

Comfortable Environments. Smooth Projects. Energy Efficiency. Tenant Retention. If these are the concerns you have, call on the company you can trust: Home Comfort Alliance.
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Tenant Improvements

When you want it done yesterday, call us today.

Every time a tenant leaves, there’s potential for expensive downtime until a new tenant moves in. But you can drastically reduce downtime and ensure a smooth, quick transition by calling in the Home Comfort Alliance Special Projects & Tenant Improvements team.

We're extremely aware of the importance of responding quickly to your tenants’ needs. Because of this, we have assembled a quick-response team that excels at performing work on very fast track projects.

And we don't just do our work fast, we do it right. Whether you're changing office space, revising computer room systems, correcting poor zoning, or undertaking any other kind of tenant work or retrofit project, you're assured of Home Comfort Alliance quality and attention to detail throughout.

This all adds up to the fastest, most comprehensive, experienced, and expert remodeling and retrofit team available. But of course, you wouldn't expect less than that from Home Comfort Alliance.
MMCS commercial
Commercial HVAC service, design in Seattle-Tacoma

Why Choose Home Comfort Alliance?

Your Comfort is Our Promise
We promise...
Reliable heating, air conditioning, plumbing and electrical service - all from one trusted company.
To educate and guide you through your options so you’ll find the right solution at the right price.
Knowledgeable and respectful workers who ensure both your own comfort during the installation process, and lasting comfort from your home systems.
Outstanding service, communication, and follow-up, so your home is comfortable now and for years to come.

It's a promise we've kept with thousands of homeowners across Western Washington

Years Experience
Installations Completed
Comfort Club Members

What our Customers are Saying!

Ousman Kamara
Ousman Kamara
I did installation with Heather & Air-condition. In my house. It was perfectly while removing the old furnace by Scott and two men and one electrician did completely professionally done. Thank you Petrick, and Chris Palmer!!! Also office people are very friendly to answer my questions.I want to recommended it with high confidence.Iam very much satisfied with the price and their job.
Jia Pak
Jia Pak
Mark Heffernan
Mark Heffernan
Joyce Marsh
Joyce Marsh
Kyle was the absolute best, he has worked with us for days trying to find a hard gas leak, brainstorming all possible solutions, offering so much guidance. We are so grateful! He also has the best attitude!
Norm Street
Norm Street
Like the job they did. From estimate to installation, I would recommend this company to other.
Yin Lu
Yin Lu
Prompt efficient and informative.
Rick M
Rick M
Great service, very professional, answered all our question and didn't try or recommend us to get upgrades. Mike is going to write up a few different quotes, which we asked for and will have them to us within 24 hours
Bob Bertoia
Bob Bertoia
Joseph and Jason from Home Comfort Alliance came out and did an amazing job installing our new furnace/heat pump combination system. We booked them through the Costco referral program and the price was excellent. I would definitely recommend them to anyone, and look forward to working with them again in the future.
Carlton Klein
Carlton Klein
Jane Comerford
Jane Comerford
We've been with Sullivan (now Home Comfort Alliance) for years. They're svc tech's are knowledgeable, professional, on time, fair in their pricing, and friendly. They've maintained/serviced our HVAC system since we moved here in 2008, and even replaced our heat pump unit. Technician Steve S. has serviced our system a number of times and he's the best. Highly recommend this company.
Rob McIntyre
Rob McIntyre
I bought through the Costco program. Adam and Marc installed my new ac unit and it was an easy and painless process.
Mike Palmer
Mike Palmer
Bought my AC from Costco. They came in as separate crews for electrical and mechanical. You know these guys are the pros when the job is done quickly and neatly. They raised the furnace to make room for the new AC unit. Joey & Alex did a good job and explained everything. Even fixed my thermostat so no more batteries are needed. Everyone I interacted with was courteous and professional, starting from the first walkthrough. Very happy with the installation.
Mark Zhou
Mark Zhou
We installed A/C and changed old furnace.Well planned, well executed from start to finish. Sam & Antonio were awesome.Very respectful and very knowledgeable.Highly recommend MM comfort and Sam and Antonio.
From the first phone contact to the last tech leaving it was the Best Quality Service Team I have encountered. I am so appreciative and grateful to have such a professional, knowledgeable and personable Team help me with an entire new Furnace, Heatpump and Thermostat Installation. I would highly recommend this company for your heating and cooling needs.If there were 10 stars they'd get them!
Pamela Walker
Pamela Walker
Iceman Top Gun
Iceman Top Gun


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Office: M-F 8am - 5pm
Emergency Service Available
9680 153rd Ave NE,
Redmond, WA 98052

1404 Riverside Drive
Suite G
Mount Vernon, WA 98273

3409 Everett Ave.
Everett, WA 98201

5373 Auto Center Way
Suite 205
Bremerton, WA 98312

3202 C St NE
Auburn, WA 98002

13701 24th Street E.
Suite A5
Sumner, WA 98390

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