Air Conditioners
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Evolution™ Extreme 26 Variable-Speed Air Conditioner186CNV
COOLING EFFICIENCY: Up to 24 SEER2
COMPRESSOR TYPE: Variable-Speed
SOUND RATING (DECIBELS): as low as 51
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Evolution™ Variable-Speed Air Conditioner
189BNV
COOLING EFFICIENCY: Up to 19 SEER2
COMPRESSOR TYPE: Variable-Speed
SOUND RATING (DECIBELS): as low as 56
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Preferred™ 2- Stage Air Conditioner with Intelisense™ Technology
127TBN
COOLING EFFICIENCY: Up to 16 SEER2
COMPRESSOR TYPE: Two-Stage
SOUND RATING (DECIBELS): as low as 70
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Preferred™ Single-Stage Air Conditioner
126S
COOLING EFFICIENCY: Up to 16.5 SEER2
COMPRESSOR TYPE: Single-Stage
SOUND RATING (DECIBELS): as low as 72
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Legacy™ Line Single-Stage Air Conditioner
115S
COOLING EFFICIENCY: Up to 16.5 SEER2
COMPRESSOR TYPE: Single-Stage
SOUND RATING (DECIBELS): as low as 73
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Legacy™ Line Single-Stage Coastal Air Conditioner
115SAN***C
COOLING EFFICIENCY: Up to 16 SEER2
COMPRESSOR TYPE: Single-Stage
SOUND RATING (DECIBELS): as low as 73
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Legacy™ Single-Stage Heat Pump
215S
COOLING EFFICIENCY: Up to 15.5 SEER2
HEATING EFFICIENCY: Up to 8.1 HSPF2
COMPRESSOR TYPE: Single-Stage -
Legacy™ Single-Stage Heat Pump
235SAN
COOLING EFFICIENCY: Up to 16 SEER2
HEATING EFFICIENCY: Up to 7.8 HSPF2
COMPRESSOR TYPE: Single-Stage -
Legacy™ Single-Stage Coastal Heat Pump
215SAN***C
COOLING EFFICIENCY: Up to 16 SEER2
HEATING EFFICIENCY: Up to 7.8 HSPF2
COMPRESSOR TYPE: Single-Stage -
Legacy™ Single-Stage Coastal Heat Pump
235SAN
COOLING EFFICIENCY: Up to 16 SEER2
HEATING EFFICIENCY: Up to 7.8 HSPF2
COMPRESSOR TYPE: Single-Stage
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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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"Everything worked out really well!"I used them for maintenance on my furnace and AC. They explained things well, were polite & professional. It was scheduled quickly and the price was good.- Jon E.
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"They have earned my trust and loyalty!"I was impressed by their professionalism, politeness, and knowledge to my inquiries, with efficiency they evaluated any issues in detail and problem-solved with skill, which assures me the job would be done right the first time.- Barbara L.
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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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"Very professional and very knowledgeable!"I have to say thank you to Adam for coming out and getting us all fixed up and running again. He is very professional and very knowledgeable, and got the job done quickly. I will definitely be using him from here on out. Great guy for sure!!- Tony N.
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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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"This team is my go-to for any HVAC work!"Adam and Gram did an amazing job with our HVAC setup. They were professional, efficient, and knew their stuff. The new system was installed quickly, and they made sure we understood everything before they left. Great experience from start to finish.- Michael B.
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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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"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.