Joy Allen
Joy Allen
2024-07-13
To Brad, Adam and Rob. This is to thank you all for your excellence in the field, the best communication and customer service anyone could hope for. Good job to each of you and congratulations on a job well done. My new HVAC system works perfectly and you teamwork was a pleasure to behold, even in hot July weather. It was tough, but Adam and Rob kept at it for nearly 10 hours at the job site. I appreciate your effort. You went the extra mile, did why I asked, and were respectful and polite in your attitude. No customer could ask for more. Brad, you streamlined the permitting process so work could begin as soon as possible. Thank you. You all really ARE Five-Star! E. Joy Allen Redmond WA
Jessica Northey
Jessica Northey
2024-06-23
Great local company
Bismark Asubonteng
Bismark Asubonteng
2024-06-13
I’m so impressed with this company. Adam is top notch when it comes to explaining and performing service. Definitely recommend!!
Hank Derka
Hank Derka
2024-06-13
Adam does a great job. He was priced fare & done the work in the time allowed.
Steve Edson
Steve Edson
2024-06-12
They came on time and did a wonderful job on our A/C unit. Very courteous and polite people and very efficient and quick. Would truly recommend this company to all my friends, as a matter of fact I have.
Fermin Mandujano
Fermin Mandujano
2024-06-03
I had a really messy HVAC issue impacting both my heat and ac. 2nd visit to take care of the furnace/heat repair and this visit just as terrific as the 1st! Adam arrived on time, brought all needed parts and in less than 2 hours a fully functioning furnace and warm heat! - Appreciate it!
craig marker
craig marker
2024-05-29
We are impressed with the whole experience. We got an AC unit installed and Brad walked us through the whole thing with patience and knowledge. He answered any questions we had with a wealth of knowledge that made us feel so comfortable with the whole process to get a bid and figure out what we needed. We had other bids and his was so competitive and thorough. He went over things that others did not. The installers Adam & Rob were top notch as well. Their attention to detail was outstanding and I don’t say that often. The professionalism shown by these two, was a refreshing to experience. We ran into a couple hiccups with my old equipment they were working with and they handled it like it was no big deal. They went above and beyond our expectations and I not only look forward to working with them in the future, but I feel confident and safe knowing they genuinely have our best interest in mind when doing their job. You can tell they strive for excellence. It’s hard to trust people sometimes when it comes to sales and we 100% didn’t feel pressured to upgrade anything we didn’t want to, but instead we were educated on the ins and outs of how things work and left to make the decisions for ourselves. 12/10 recommend them for all of your HVAC needs!
Jonathon Stevens
Jonathon Stevens
2024-05-28
Provided clear diagnosis with the ability to help me understand properly what was needed to get my system up and running once again. So thankful for these guys and all that they were able to do for us!
Michael Barber
Michael Barber
2024-05-27
This company fixed a refrigerant leak that was left by a larger company in the area. They did it at a reasonable rate, they were friendly, knowledgeable, and perform the work in a timely manner. 10 out of 10 recommend
Angela Hawkins
Angela Hawkins
2024-05-27
Professional and excellent service- I highly recommend this company and will only use them for my home.

Elevate your Comfort
with our Furnace Repair
and Air Conditioning Repairs Services
in Mountlake
Terrace, WA


We believe in prioritizing the customer, meeting their genuine needs, rather than solely chasing profits. Our team emphasizes training employees in integrity, honesty, and transparency. Our staff embodies our values and shares our commitment to delivering exceptional service to our customers. We understand that trust is the cornerstone of a lasting relationship between a business and its clientele. By fostering an environment where customer satisfaction is paramount, we not only build loyalty but also create a positive impact on the community. We are dedicated to continuously improving our products and services based on the feedback and needs of our customers. Our goal is to create meaningful experiences that resonate deeply with those we serve. Every interaction is an opportunity for us to demonstrate our commitment to excellence and to show that we truly care about the people who choose to do business with us. In a world where many companies focus on short-term gains, we are proud to stand out by prioritizing long-term relationships and ethical practices. We believe that by putting people first, both our customers and our employees, we can achieve sustainable success and make a difference in the lives of many.

Please note our Privacy Policy, and Terms and Conditions.

Our HVAC Services in Snohomish County Are All-Inclusive

Discover our extensive range of residential HVAC installation, maintenance and repair services in Snohomish, WA, designed to enhance the comfort, safety, and efficiency of your home.

Gas Furnaces Repair And Installation

Warm your home with our advanced gas furnaces, offering superior energy efficiency and dependable heating solutions.

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Air Conditioning Repair Services

Embrace the modern convenience and efficiency of Air Conditioners, tailored for flexible climate control and energy savings. Our Install Teams care about how it looks when it's installed as much as the functionality of keeping your home or business comfortable.

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Heat Pump Installation and Repairs

Our heat pumps deliver consistent, eco-friendly climate control, perfect for keeping your home comfortable year-round. We have the very best equipment available, From Mitsubishi Heat Pump Installation, American Standard Heat Pump Installation or even Bosch Heat Pump Installation we have you covered.  Take a look at our products page to see more options. 

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How We Work
Request Your Service

Give us a Call or Fill out our Online Service Request form to set up an appointment. We’ll reach out to Finalize your Appointment and Schedule a Time for a Service Technician to Arrive at your Location. With our Office in Mountlake Terrace, we are centered around most Major Cities to get to you Quickly.

Technician Arrives

We’ll send a Technician to your Address to Assess your Concerns and Perform Repairs to your Satisfaction.

Satisfaction Guaranteed

Once the job is complete, We Guarantee your Full Satisfaction. We Provide Expert Solutions for any of these, AC Installation, Furnace Installation, Heat Pump Installation or Ductless Mini Split Installation. We use the best parts for Repairs and love working as a team. We are all friends at Onestop and want to make You a part of the Greatness We have Created.

How We Work

Why Choose Onestop

With our Highly Trained Service Technicians, Your Project will be taken Seriously and it will be done the Right Way! We care about Your Home and Will Show you the Respect you Deserve!

Technician Arrives

We’ll send a Technician to your Address to Assess your Concerns and Perform Repairs to your Satisfaction.

Request Your Service

Give us a Call or Fill out our Online Service Request form to set up an appointment. We’ll reach out to Finalize your Appointment and Schedule a Time for a Service Technician to Arrive at your Location. With our Office in Mountlake Terrace, we are centered around most Major Cities to get to you Quickly.

Satisfaction Guaranteed

Once the job is complete, We Guarantee your Full Satisfaction. We Provide Expert Solutions for any of these, AC Installation, Furnace Installation, Heat Pump Installation or Ductless Mini Split Installation. We use the best parts for Repairs and love working as a team. We are all friends at Onestop and want to make You a part of the Greatness We have Created.

Why Choose Onestop

With our Highly Trained Service Technicians, Your Project will be taken Seriously and it will be done the Right Way! We care about Your Home and Will Show you the Respect you Deserve!

We Service All Major Brands

We service all brands and try to get your repairs done on the same day! We are Trained and Certified for AC Repairs, Furnace Repairs, Heat Pump Repairs, and Ductless Mini Split Repairs.

100% Satisfaction Guarantee

We Understand Customer Satisfaction. We have dedicated staff that will help resolve any issues that may arise. We take the Time to Understand our Customers and Will Earn your business.

Available 24/7

Have an Emergency No Problem 24/7, Onestop will be on the Road Ready to take Care of your System.

Locations We Serve

At Onestop Heating Cooling and Electric LLC, We’re Proud to Serve many areas across Washington State, ensuring Top-Notch Residential and Commercial HVAC services in Snohomish County and King County, WA for every Home and Business.

  • Lake Stevens, WA
  • Kenmore, WA
  • Smokey Point, WA
  • Arlington, WA
  • Green Lake, WA
  • Ballard, WA
  • Bellevue, WA
  • Marysville, WA

Latest News/Blogs

Heat Pump and How They Work

A heat pump is a key component of a home’s heating and cooling system, typically located outside the house. Similar to a central air conditioner, it can both cool and heat your home. During colder seasons, it extracts heat from the outdoor air and brings it indoors, while in warmer seasons, it removes heat from the inside to cool the space. Powered by electricity and utilizing refrigerants, heat pumps ensure year-round comfort without the need for separate heating systems. In colder regions, an electric heat strip can be integrated into the indoor Air Handler for enhanced heating capabilities. Unlike furnaces, heat pumps do not rely on burning fossil fuels, making them a more eco-friendly heating and cooling option.

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The Power of Prevention: Why Electrical Maintenance is Key for Your Home

Welcome to the OneStop Heating Cooling Electric Blog! Today, we’re diving into the crucial topic of electrical maintenance and why it’s essential for your home. As a leading provider of electrical services, we understand the importance of keeping your electrical systems in top condition to ensure safety, efficiency, and peace of mind for you and your family.

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What Our Customers Say

Hear directly from Our Satisfied Customers and Dy Onestop Heating Cooling  Electric LLC is the trusted choice for Residential and Commercial HVAC Services in Mountlake Terrace.

Satisfaction Guaranteed

Once the job is complete, We Guarantee your Full Satisfaction. We Provide Expert Solutions for any of these, AC Installation, Furnace Installation, Heat Pump Installation or Ductless Mini Split Installation. We use the best parts for Repairs and love working as a team. We are all friends at Onestop and want to make You a part of the Greatness We have Created.