About Optimal HVAC

Residential and Commercial HVAC & Refrigeration

Special Financing Available. Subject to Credit Approval.*

*This Credit Card is issued with approved credit by Wells Fargo Bank, N.A.

Our Story

Optimal HVAC is a family owned and operated company specializing in the Design, Layout, Installation, Service and Maintenance of both Residential and Commercial systems. Including but not limited to HVAC and Refrigeration.

Shawn Zielinski

The Zielinski brothers, Shawn and Derrek, started Optimal HVAC LLC in February of 2017, and have rapidly earned a reputation providing high end appliances and quality services repairing appliances. Family owned and operated means treating people respectfully, showing them that they really matter, paying close attention to detail, and the utmost dedication to the customers’ satisfaction. This is the source of true value and worth for Business Owners and Homeowners. Optimal HVAC has an ambitious mission to be the most trustworthy HVAC company in the King County and Pierce County areas.


Derrek Zielinski

Optimal HVAC works with a variety of manufacturers to offer you the best possible costs on equipment and parts. We also provide Preventive Maintenance contracts to increase the efficiency and extend the life of your equipment. Our employees are highly Trained and Experienced to Install and Service Residential and Commercial HVAC & Refrigeration Systems, and are on Call 24 hours a day, 7 days a week to provide your company with Emergency Repairs.

We have made it a priority to become the most reliable installer of high quality products and services on the market. Optimal HVAC LLC is the excellent choice for Homeowners and Business Owners with high standards in need of new equipment or repair of old equipment. We are reaching people who are in need of Heating or Cooling Specialists and Contractors because they require an Installation or Repair of products such as Furnaces, Air Conditioners, Heat Pumps, Water Heaters, Residential or Commercial HVAC and Refrigeration Equipment. Call Us Today for a Quote!


They are fantastic! Wonderful
Customer service. No question left unanswered. Quick to respond and they did a fast but thorough install. 10/10 would recommend!

Kimberly Schaub

February 5, 2018

With the recent snow and then freezing rain woke up to a frozen fan in our heat pump. Was referred to optimal who came out same day! Told us the problems, for the parts ordered, and fixed within 3 days. Will use again and refer to others!

Holly West

February 15, 2018

Timely, professional and took the time to educate me on things I had never heard from other HVAC professionals. THANK YOU!

Crystal Stanton

May 10, 2018

Came back from vacation to a non working furnace. These guys came out when they said, fixed the problem ASAP and have great pricing. They are now entrusted with my AC installation. It’s hard to find reliable vendors and contractors in today’s market, these guys are the real deal. Would recommend them for any Furnace/AC/Water heater work you may need! They go above and beyond for sure.

Dustin Corcoran

July 22, 2018

We couldn’t have asked for a better customer service experience. Local, very responsive and fantastic work hands down. If you’re thinking of installing AC definitely go with these guys!

Jack Louie

July 25, 2018

THANK YOU from the bottom of our hearts for taking great care of us & truly being just wonderful & caring human beings. The fact that YOU ALL went ABOVE & BEYOND to help take care of my family & my chronic lung disease & protecting me from getting any other weird lung infections says a lot. Not only about your business & ethics, but as a whole, your thoughtful & selfless hearts & character. 

Dynelle Gibson

November 1, 2018

Our Mission

Mission Statement

Optimal HVAC provides high end appliances and repairs on an appliance for Homeowners and Business Owners with close attention to detail and dedication to the satisfaction of our customers.

Our Vision

We strive to be your first choice when it comes to Design, Layout, Installation, Service and the Maintenance of Residential and Commercial HVAC and Refrigeration Systems.

Our Values

The customer comes first, and we will do everything in our power to deliver high quality products and services in an efficient and timely manner all while remaining affordable without compromise.

Free Quote on Installation, Maintenance and Repair

We have a competitive hourly rate and service hours for refrigeration equipment.

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Schedule an Appointment

Installations, Repairs and Maintenance of your HVAC products. Serving the greater King County & Pierce County.

King & Pierce County

Bonney Lake
Des Moines
Federal Way
Maple Valley
Prairie Ridge

Professional Installation

Here to satisfy your HVAC needs

Repairs and Maintenance

Don’t wait until an Emergency!

28120 WA-410 D4,
Buckley, WA 98321