United Systems Mechanical LLC
Licensed general contractor, HVAC contractor in Seattle, Washington
United Systems Mechanical LLC holds Washington L&I licence UNITESM813QO, active, licensed since 21 Nov 2019, rated 5.0 from 2 Google reviews. Bonded for $4,000 with Merchants Bonding Co (Mutual). Washington L&I record: 0 open lawsuits against the bond, 1 infraction, citation or debarment, 0 resolved.
Read before hiring: 1 infraction, citation or debarment on the Washington L&I record. Details below, from the board's own record.
Report card
- Licence activeWashington L&I #UNITESM813QO, Hvac/Rfrg. Issued 21 Nov 2019, expires 21 Nov 2027.
- Licensed 22 yrsSince 1 Nov 2004.
- Bonded$4,000 with Merchants Bonding Co (Mutual), since 28 Oct 2019. Washington sets the bond by licence type ($30,000 for a general contractor, $15,000 for a specialty contractor, $4,000 for an electrical contractor), so the amount shows the kind of licence, not the size or quality of the business.
- Complaints on record0 open lawsuits against the bond, 1 infraction, citation or debarment, 0 resolved.Details on the Washington L&I record
- 171 building permits since 2020Naming this business as the contractor (City of Bellevue; City of Seattle), most recently 9 Oct 2026.
Checked against the Washington State Department of Labor & Industries (L&I) register on 4 Nov 2026.
Google reviews
5.0(2 reviews)Michael Euzent★★★★★ 7 years agoView on Google
Great outfit to work with. They communicate well and stick to their schedule. We had a type 1 hood, ERV, and other HVAC installed by them. All their work was neat, tidy, and built to code.
Read all 2 reviews on Google Reviews and photos from Google, 4 Nov 2026.
Recent permits
Building permits pulled under licence #UNITESM813QO, from City of Bellevue; City of Seattle open data, which names contractors up to 2 Nov 2026. Locations are shown to ZIP code only.
- 9 Oct 2026 · N/A Electrical · ZIP 98109relocating (1) existing Thermostat and adding (1) new controller for an ERV
- 9 Oct 2026 · N/A Electrical · ZIP 98136disconnecting from the (3) old RTU's and reconnecting to the (3) new RTU's the HVAC controlls.
- 8 Oct 2026 · Commercial Trade · ZIP 98125Relocate existing floor grilles per plan. Replace all the floor grilles with new. Five new ceiling exhaust fans with new associated dryer exhaust duct...
- 2 Oct 2026 · Commercial Trade · ZIP 98107New Type I kitchen hood, Type I kitchen exhaust fan, MUA, RTU & associated ductwork per plan.
- 30 Sep 2026 · Commercial Trade · ZIP 98136Replace three existing gas packs (RTU's) with new gas packs and roof curbs, replace one existing Type I exhaust fan curb with new, replace one existing Type...
Why it ranks #264 of 2,055 general contractors in Seattle
Score 70.4 / 100. Claiming this listing or using Theo never changes it. How we rank
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