Furnace
Furnaces
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Evolution™ 98 Variable-Speed Modulating Gas Furnace987M
AFUE EFFICIENCY: Up to 98.3%
GAS VALVE TYPE: Modulating
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Evolution™ 96 Variable-Speed Gas Furnace
986T
AFUE EFFICIENCY: Up to 96.7%
GAS VALVE TYPE: Two-Stage
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Evolution™ 80 Variable-Speed Gas Furnace
880TA
AFUE EFFICIENCY: 80%
GAS VALVE TYPE: Two-Stage
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Evolution™ 80 Variable-Speed Ultra-Low Nox Gas Furnace
830CA
AFUE EFFICIENCY: 80%
GAS VALVE TYPE: Single-Stage
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Evolution™ 95 Ultra-Low Nox Gas Furnace
935CA
AFUE EFFICIENCY: Up to 95%
GAS VALVE TYPE: Single-Stage
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Preferred Series OVL Oil Furnace
OVL
AFUE RATING: Up to 87.5%
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Preferred Series OVM Oil Furnace
OVM
AFUE RATING: Up to 86.4%
Built on Trust. Powered by Expertise.
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Fast, Reliable Service 24/7From emergencies to routine calls, our team is always ready, day or night, to restore your comfort quickly.
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Financing & Membership PlansWe offer flexible financing and value-packed memberships to keep your home running smoothly all year.
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Licensed, Bonded & InsuredYour home is in safe hands with fully certified technicians and reliable, code-compliant service.
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Locally Owned & OperatedServing Snohomish and King County with trusted, community-focused HVAC and electrical expertise.
Hear From Our Happy Customers
At ONESTOP, your satisfaction is our priority! See for yourself what our customers have to say about working with us.
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"12/10 recommend them for all of your HVAC needs!"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 interests in mind when doing their job. You can tell they strive for excellence- Craig M.
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"10 out of 10!"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.- Michael B.
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"My house has never been more comfortable!"Adam was phenomenal. He was not pushy and provided me with all my options. He even explained everything to me in great detail. He really helped me make an educated decision. He educated me on SEER ratings and the different types of furnaces that exist.- Bob C.
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"Highly recommended, five stars!"It was amazing to watch OneStop Heating's team in action. Heat pumps are not small investments so it makes all the difference to know you've got a quality installation and the company will back its work with a sound maintenance program.- Ann M.
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"Fantastic services!"Absolutely amazing service from OneStop! They quickly diagnosed and fixed my heating issue, restoring the heat to my home in no time. Professional, efficient, and courteous throughout the process. Highly recommend!- Ryan J.
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"I will definitely be using their services again in the future."I recently hired Onestop to install a new AC unit in my rental property in Mountlake Terrace, and I couldn't be more pleased with the service I received. From start to finish, the team impressed me with their professionalism, expertise, and attention to de- Danielle B.
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"They went the extra mile - no customer could ask for more!"
My new HVAC system works perfectly, and their teamwork was a pleasure to behold, even in hot July weather. The best communication and customer service anyone could hope for. They all really are five stars!
- Joy A. -
"If you want great customer service and great quality work give them a call!"I have to say, Onestop is top-notch, and Adam was great to work with, did not give us the run-around of what we didn’t need, as most companies seem to do. Adam was upfront and honest. Fantastic prices, exceptional customer service!- Sarah H.