Honest!! That's a huge thing for me. Did not charge extra to come out on New Year's Day and didn't try to upsell us, Karl took the time to explain our system to us and make suggestions for future maintenance on our schedule unit in the spring. Awesome service and very reliable!
About Legacy One Heating
Legacy One Heating, Inc. is a trusted heating and cooling company serving homes and businesses in North King and Snohomish County. They provide installation and maintenance of gas and electric furnaces, air conditioners, heat pumps, ductless heat pumps, and water heaters. Customers value their honesty, transparency, and fair pricing, with no upselling tactics. The company is known for its punctuality, professionalism, and clear communication. Customers especially appreciate their quick response and friendly service during urgent situations. The technicians are skilled, patient, and diligent, ensuring smooth installation or repairs. They also care about their customers by explaining work thoroughly and following up with thank you cards and warranty information. Recently, they quickly responded when a heat pump failed during a hot streak, diagnosing the issue and installing a more efficient heat pump, allowing the house to stay comfortably at 75 degrees even on 90-degree days. Their reliable service, helpful advice, and cost-effective solutions have made them a go-to company for many customers. Whether installing a new system or updating an existing fireplace with a programmable thermostat, they deliver courteous, efficient, and high-quality work. Legacy One Heating continues to demonstrate its commitment to customer satisfaction through integrity and excellent service.
Reviews
Karl put in a brand new York furnace and a heat pump in our split level home and we can't believe we waited this long! Karl is fairly priced, is personable and professional and always showed up when he said he would and communicated throughout the process. I wouldn't hesitate to recommend him to anyone looking for an HVAC company.
They seem almost as interested in saving me money as I am. I broke up with my previous HVAC company and I’m overjoyed to now be with Legacy One. Other companies I had come take a look at my system were pushing an entirely new system to replace my 11 year old heat pump and furnace. Legacy One sent out their service manager, Casey, who was fantastic. He went into far greater depth on every facet of the problem causing issues than the other two companies I had out and explained it all more plainly. He found low cost options to give me more life out of my current system and even navigated a warranty issue that the installing dealer was giving me the run around about to… read full review
Photos

Hours
Good to know
- online estimates
- on-site services
- accepts credit cards
- offers military discount
- open to all
- verified license
Location
4403 Russell Road Suite 111, Mukilteo, WA 98275
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