Air Quality

90% of our lives are spent indoors, yet pollution can be 2-5 times greater indoors than outdoors.
We offer a variety of indoor air quality solutions that combat dust, smoke, VOCs, viruses, bacteria, odors, and gases,
so you can have peace of mind with the air you breathe.

The Benefits of an
Indoor Air Quality Solution

Freshens and purifies your indoor air
Eliminates germs and bacteria
Reduces allergy symptoms
Prevents AC clogging and malfunctions
indoor air quality
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If "Other", let us know how you heard about us below!

We Offer 3 levels of Indoor Air Quality Solutions:

Simple filtration through a 1 or 2-inch filter used with your furnace or air conditioner is a low-cost, entry-level solution for protecting your equipment. Enhanced filters that are 4-6 inches can provide a higher Merv rating to allow for cleaner air.
You can achieve enhanced filtration through the use of an electronic air cleaner or air purifier, which is sometimes known as an air scrubber. These use electricity to capture and disinfect pollutants in the air. It attaches to your HVAC system and reduces odors and dust and eliminates harmful contaminants both in the air and on the surfaces of your home. This solution is simple to add for a moderate investment.
A HEPA system can work either as a stand-alone or in combination with one of the solutions listed above. A HEPA rated filter achieves the highest level of particulate removal of any filtration system. It’s easiest and most cost effective to add this advanced filtration at the same time you install a new system.

How Often Should I Change My Air Filter?

Each type of filter will come with its own replacement timeline recommendation. As a rule, 1-2 inch filters should be replaced every 30 days. 4-6 inch filters should be changed every 90-180 days depending on contaminant load, while some high-efficiency filters can be changed annually.

air filter
Duct Cleaning

How Often Should I Clean My Ducts?

Ductwork collects dust, dirt, and pollen and over time can become a breeding ground for mold, mildew, and germs that can irritate allergies and create odors. Regular duct cleaning can prevent these pollutants from spreading throughout your home. The frequency of cleaning depends on several factors, including your preference as the homeowner. Some factors that may lead you to consider more frequent cleaning include:
Smokers in the household.
Pets that shed high amounts of hair and dander
Water contamination or damage to the home or HVAC system.
Residents with allergies or asthma
After home renovations or remodeling.
Prior to occupancy of a new home.

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.
We promise 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.
We promise outstanding service,
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

Years Experience
Installations Completed
Comfort Club Members

What our Customers are Saying!

Xinyang Li
Xinyang Li
22:16 14 May 22
Cool guys I dealt with today. They seem laid back and down to earth. I had an interview with them earlier today. Hopefully we can work something out.
Shawn Chance
Shawn Chance
23:42 21 Apr 22
Ben came out from G and S to perform a check and maintenance on my heating/heat pump system. Arrived on time, very polite and effecient. All is well.
Dave Stout
Dave Stout
15:56 10 Apr 22
C Becker
C Becker
21:49 07 Apr 22
They are always respectful, knowledgeable and prompt. Have used them for many years with zero complaints. Some of the new owner changes are frustrating but hopefully they will dial things in.
Kristi Cundy
Kristi Cundy
18:44 08 Mar 22
Sullivan installed two Mini-Splits in our home… bobby Baker was the salesman (extrodinare) Start to finish, “all the Sullivan Staff was GREAT”Highly recommend this Company 👍🏻👍🏻👍🏻👍🏻👍🏻👍🏻👍🏻👍🏻👍🏻
Les. Kay. Rose
Les. Kay. Rose
21:09 21 Feb 22
Andrew Carle
Andrew Carle
18:08 08 Jan 22
Luke Schwaigert
Luke Schwaigert
11:15 18 Nov 21
Taylor Anderson
Taylor Anderson
12:15 17 Nov 21
Always prompt response
KarenL Lindenmayer
KarenL Lindenmayer
16:11 02 Nov 21
The fellas that came, Dan & Tim, we’re professional, knowledgeable, efficient and friendly. They informed us of the process and steps involving the gas line installation. We are happy customers:)
Cherie Rezen
Cherie Rezen
20:13 30 Oct 21
Johnny came out and did a great job for us!!They were even able to schedule us quickly!!thank you so much!!
Lucinda Gardner
Lucinda Gardner
15:00 10 Oct 21
If you need the electrical done, you should call and wait for Dustin. He is professional, calm, kind and easy to work with. I was in a hurry and went with another company but things didn't work out. Dustin will take his time and do the best he can to help you out. BE PATIENT AND WAIT FOR DUSTIN!!
21:44 03 Oct 21
Started wit Nate the sales gentleman. He was very friend and courteous and explain everything to us of what we needed to get the work done, and gave the options to choose.Carlos and Eddie were amazing. They came on time and started working on installing our central AC. They were very professional and we couldn't be more happier.After they were done, they clean everything up , and put it back the way it was.The guys who came to clean our ductless were very efficient and professional. We will definitely be recommending this company to our friends and families.We will be using this company to maintain our AC and furnish from now on.
Lyly Graffam
Lyly Graffam
17:57 17 Sep 21
Chanelle Parton
Chanelle Parton
00:16 05 Sep 21
Our heat pump failed the night before the big heat wave back in late June. We were facing the prospect of having to search for a place to stay cool since all the HVAC companies we called gave us appointment times several days and even weeks away. We called Sullivan late Friday evening and they had a technician here Saturday morning and he fixed the heat pump in about 30 minutes. We needed a part and Arnold the technician had it in the truck! Go figure. Our external thermometer got up to 113 degrees two days later. I can't speak highly enough of this company. I can't imagine the misery and discomfort they saved us and possibly the death of my old dog from the heat. Thank you Sullivan Heating & Cooling.
Kitsap Craig
Kitsap Craig
16:37 19 Jul 21
Travis our service tech was friendly and knowledgeable, he explained everything he was doing and why. Fixed the problem and did not leave until he made sure everything was working correctly. Definitely will use Sullivan Heating and Cooling again in the future.
Kimmie Lancaster
Kimmie Lancaster
23:10 08 Jul 21
Sullivan installed our new heating system this year and worked with us so the thermostat settings are right. We have been so grateful during this time of hot temperatures we have the service. They do a great job!
Merrily Boone
Merrily Boone
19:23 30 Jun 21
My heat pump broke down unexpectedly the night before a record heat wave was expected. I called just about every HVAC company I could find and no one was willing to book an appointment for at least several days out. Most were several weeks. But Sullivan returned my after hours phone call within minutes and had a tech come to my house within a few hours and quickly made the repair. Their work was great, and their prices were fair. These guys are superheros and I can't recommend them highly enough.
Michael Johnson
Michael Johnson
19:36 27 Jun 21


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

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