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 Conditioner189BNV
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™ Technology127TBN
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 Conditioner126S
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 Conditioner115S
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 Conditioner115SAN***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 Pump215S
COOLING EFFICIENCY: Up to 15.5 SEER2
HEATING EFFICIENCY: Up to 8.1 HSPF2
COMPRESSOR TYPE: Single-Stage -
Legacy™ Single-Stage Heat Pump235SAN
COOLING EFFICIENCY: Up to 16 SEER2
HEATING EFFICIENCY: Up to 7.8 HSPF2
COMPRESSOR TYPE: Single-Stage -
Legacy™ Single-Stage Coastal Heat Pump215SAN***C
COOLING EFFICIENCY: Up to 16 SEER2
HEATING EFFICIENCY: Up to 7.8 HSPF2
COMPRESSOR TYPE: Single-Stage -
Legacy™ Single-Stage Coastal Heat Pump235SAN
COOLING EFFICIENCY: Up to 16 SEER2
HEATING EFFICIENCY: Up to 7.8 HSPF2
COMPRESSOR TYPE: Single-Stage
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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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"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. -
"The job was extremely well done!"Adam and Gram came in today to install a new furnace. The job was extremely well done and completed in half a day. I couldn't be happier with their service and the quality of materials they used.- Chris M.
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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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"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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"Completely satisfied with his knowledge and customer service!"He pointed out some conditions that function best with regular inspection and recommended their maintenance program.- Missy A.
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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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"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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"They were on time, nice, kind, honest, did their job efficiently and well."Adam and his installers arrived the next morning, on time! The crew did a great job and were done sooner than I'd expected. They not only installed my new Trane furnace, but they also made the whole area look better and cleaner.- Carrie S.