Air Quality Services in Portland, Oregon

Good Old‑Fashioned Air Quality Services for Portland Homeowners

Portland enjoys good air quality, with low levels of pollution and air-borne particles, but that can change quickly during wildfire season. Wind direction can leave Portland homeowners choking on nearly twice the recommended levels of PM2.5 pollutants. At Four Seasons, we offer a variety of solutions designed to give you a breath of fresh air every time you come home. We offer a variety of products to improve your home's air quality, such as air filters, air purifiers, and smart thermostats.. Our NATE-certified technicians can often finish installations in a matter of hours. With fast, convenient scheduling and fair and honest pricing, you don’t have to wait for affordable and excellent service.

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  • Best Service
    Old-Fashioned Stress-Free Service

Our Air Quality Services in Portland


Controlling temperature and humidity levels is step one for improving indoor air quality. Portland homeowners that want affordable heating and cooling along with the right levels of humidity can see substantial improvements by installing the right thermostat. Our smart thermostats let you enjoy extra comfort, all without the hassle of inputting specific programming. If a smart hub isn’t part of your ideal home design, our knowledgeable technicians can walk you through other options. Programmable models might need a little more upfront set-up, but deliver the same great results. No matter what type of thermostat we install, it usually takes less than an hour.

Air Filters

At Four Seasons, we believe in keeping things simple when it comes to air quality. Our air filtration systems remove up to 98% of particles moving through your HVAC system, leaving you with cleaner, fresher air inside your Portland home. Every system we install is backed by our no-nonsense satisfaction guarantee. If you aren't satisfied with our work for any reason at all, we'll make it right. Plus, every air filtration system we install comes backed by a 5-year warranty on parts. We'll install the system in as little as an hour, and you won't need to worry about expensive repairs for years to come.

Air Purifiers

Take all the benefits of a great filter and magnify them with one of our whole-home air purifiers. At Four Seasons, we offer air purifiers that can eliminate odors and indoor air pollutants, reducing pollen levels and other particles that affect indoor air quality. We can even help eliminate the risk of sick building syndrome, making your Portland home an oasis protected against everything from smoke to pet dander. Our installations come with up to 5 years of parts protection and a 30-day labor warranty. If we install it and it needs adjustment, our NATE-certified technicians can be at your home quickly and get things running at no cost to you.

Customer Story in Portland, Oregon

Portland Customer Bundles Maintenance and Installation Services for Big Savings with Four Seasons


Craig C. became a maintenance plan member with Four Seasons several years ago. This year, he needed both annual service and help to improve his indoor air quality and to save on the monthly bills. A brand new thermostat was a great way to help with energy savings, and as a plan member, our quote included a 15% discount on the bill. We were happy to install a customer-purchased thermostat, and once he saw the potential savings and affordable installation quote, Craig was on board.


When it was time for the installation, our team of NATE-certified technicians arrived promptly and immediately got to work. Within an hour, Craig has a new thermostat installed and a helping hand in understanding how to get the best out of his new temperature control device. In recognition of our 5-star service, Craig left the following review.

" always feels like we're interacting with a small local business and appreciate the personal touch and care with each interaction."

“We've been using Four Seasons for several years now, with an annual maintenance plan. That plan gives us priority for emergency calls, which has come in handy during some increasingly common heat waves here, when our A/C has conked out due to extreme heat. Today during routine inspection, the tech noticed the A/C capacitor was starting to fail again and was able to replace it in the same visit. Also, today they professionally and knowledgeably installed a new smart thermostat (one we had bought ourselves), which should result in somewhat lower power usage over time (if the features work as promised), and we got 15% off their regular install fee for being maintenance plan members. All in all, we feel like someone is watching out for our climate control for us so we don't have to stress about it. Even though they've grown over the years, it always feels like we're interacting with a small local business and appreciate the personal touch and care with each interaction.”

- Craig C. | Portland, OR Homeowner

With 4.9 out of 5 stars on Google ⭐⭐⭐⭐⭐

Tired of HVAC Companies That Treat You Like a Fair-Weather Friend?

We’ve been in this business long enough to know that many HVAC companies will do whatever it takes to get your business and then fail to follow through on the promises they’ve made. At Four Seasons, we don’t cut corners, we don’t break our promises, and we don’t try to upsell you on equipment and/or services you don’t genuinely need.

If you're tired of being treated like a fair-weather friend by HVAC companies, choose Four Seasons! We won’t let you down.

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