Legacy One Heating
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Claim This BusinessAbout Legacy One Heating
Legacy One Heating has served Mukilteo and the greater Seattle area since 2016, building a reputation on honest, transparent service without commissioned upselling. The company was founded by an HVAC veteran with over two decades of industry experience who grew frustrated with the "upsell" culture at larger companies. Today the team handles both residential and commercial projects across Everett, Seattle, Kirkland, Bellevue, Edmonds, Lynnwood, and surrounding communities. With a 4.7-star rating from 65 verified reviews, the contractor offers full-spectrum heating and cooling services including AC repair, furnace installation, heat pumps, ductless mini-splits, and indoor air quality solutions.
What distinguishes Legacy One Heating is their no-commission structure, technicians recommend repairs and replacements based on what they would advise for their own families, not on maximizing invoices. They partner with major equipment brands including American Standard, Coleman, Daikin, Mitsubishi, and Bosch, offering installation and maintenance across the full product lineup. The company provides financing options and backs their work with a satisfaction guarantee. Their website also highlights a maintenance plan program and seasonal coupons, giving homeowners predictable ways to maintain their systems and manage costs.
Reviewers consistently name specific team members who delivered exceptional service. Technician Casey earned high praise for providing a thorough second opinion on a gas valve issue, saving one customer an unnecessary repair while explaining the diagnostic process in clear terms. For another homeowner selling their house, Casey delivered a detailed report needed for the sale. The installation team including Colin and Cameron received recognition for professionalism, while Karl, the owner, was cited for helping customers understand tradeoffs when selecting new HVAC systems for older homes. Collin's follow-up work specifically earned commendation for going "the extra mile" to ensure proper setup.
What Customers Say
The 65 reviews yield a 4.7-star average, with every named technician, Casey, Karl, Colin, and Cameron, receiving 5-star mentions. Positive reviews cite thorough diagnostics, honest recommendations, and quality installations, while one 4-star review notes communication gaps during equipment installation that were later resolved through follow-up.
Working Hours
| Sunday | Closed |
| Monday | 7 AM–4 PM |
| Tuesday | 7 AM–4 PM |
| Wednesday | 7 AM–4 PM |
| ThursdayToday | 7 AM–4 PM |
| Friday | 7 AM–4 PM |
| Saturday | Closed |
Services
Air Conditioning (Repair, Maintenance, Installation, Emergency)
Full-service air conditioning support including seasonal maintenance, diagnostics, repairs, new system installs and emergency outage response to restore cooling quickly.
Heating Systems (Furnace, Heat Pump, Ductless Mini-Splits)
Heating services cover furnace repair and installation, heat pump servicing, and ductless mini-split work with system selection and commissioning tailored to home size and efficiency goals.
Indoor Air Quality & Duct Services
Indoor air quality offerings include air filtration and air balancing along with duct repair to improve comfort, airflow and home air cleanliness.
Commercial HVAC & Specialized Systems
Commercial HVAC support and specialty installations such as WhisperKOOL wine cellar systems, with manufacturer experience across brands like Daikin, Mitsubishi and Bosch.
Maintenance Plans & Financing
Preventive maintenance plans and financing options help spread the cost of system upkeep and major replacements while preserving equipment warranties and efficiency.