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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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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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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"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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"Wonderful service from Onestop!"They serviced my furnace and AC, and they were on time and super friendly. I would highly recommend Onestop all my family and friends.- Joshua F.
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"We had such a great experience!"The team at OneStop really cares about their work and doing a great job for their clients. Highly recommend!- Lauriana L.
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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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"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. -
"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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"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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"Excellent service from ONESTOP!"They serviced my AC and furnace and were professional, friendly, and clearly knew what they were doing. No pressure, just honest and reliable service. I’m really happy with how everything turned out and will definitely be using them in the future.- Matt H.