Heat Pumps
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Evolution™ Extreme 24 Variable-Speed Heat Pump284ANV
COOLING EFFICIENCY: Up to 22 SEER2
HEATING EFFICIENCY: Up to 10.5 HSPF2
COMPRESSOR TYPE: Variable-Speed -
Evolution™ Variable-Speed Heat Pump288BNV
COOLING EFFICIENCY: Up to 18.5 SEER2
HEATING EFFICIENCY: Up to 9 HSPF2
COMPRESSOR TYPE: Variable-Speed -
Preferred™ 2-Stage Heat Pump with Intelisense™ Technology227TBN
COOLING EFFICIENCY: Up to 16 SEER2
HEATING EFFICIENCY: Up to 7.8 HSPF2
COMPRESSOR TYPE: Two-Stage -
Preferred™ Single-Stage Heat Pump225S
COOLING EFFICIENCY: Up to 15.2 SEER2
HEATING EFFICIENCY: Up to 8.1 HSPF2
COMPRESSOR TYPE: Single-Stage -
Preferred™ Single-Stage Heat Pump with Intelisense™ Technology246SAN
COOLING EFFICIENCY: Up to 16 SEER2
HEATING EFFICIENCY: Up to 7.8 HSPF2
COMPRESSOR TYPE: Single-Stage -
Preferred™ Compact Heat Pump38MURA
COOLING EFFICIENCY: Up to 18 SEER2
HEATING EFFICIENCY: Up to 9.8 HSPF2 -
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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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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"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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"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.
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"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.
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"I couldn't be happier with the experience!"The techs arrived on time, were courteous and respectful of my home, and quickly diagnosed and fixed the issue with my HVAC system. They took the time to explain the problem to me in a way that I could understand and offered solutions to prevent issues.- Travis R.
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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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"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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"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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"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.