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Claim This BusinessTSS HVAC Services has operated in the Pacific Northwest since 1985, earning a 4.5-star rating from two verified reviews. The company holds Idaho Contractor License #RCE-2060 and Oregon Contractor License #153181, and fields NATE-certified technicians who maintain peak system performance across the region. Based in Mukilteo, TSS serves commercial property managers, facility managers, building owners, and national brands throughout Washington, Idaho, and Portland. The office handles inquiries Monday through Friday from 8 AM to 5 PM, with a live human answering calls around the clock every day of the year.
A free four-hour expert assessment is available to first-time commercial customers, a practical entry point that lets TSS technicians identify system vulnerabilities and plan solutions before committing to repairs. The company maintains documented relationships with national brands including PetSmart, PetCo, FedEx Retail, Lowe's, and Starbucks, built through dedicated team leads who coordinate seamless service at multiple locations. Customer feedback specifically credits TSS technicians for digging past surface symptoms to isolate root causes, a diagnostic discipline that earned commendation from the GSA for operations and maintenance at the Richland Federal Building.
Reviewers Alex and Katy praised TSS after a commercial HVAC replacement at their Seattle business, calling the crew timely and the project seamless. They singled out technician Tony for going above and beyond, saying they would not hesitate to call TSS again. A second reviewer, Mike D, described TSS as consistently providing service that keeps businesses comfortable across every season while acting respectfully on-site.
Both reviewers awarded 5 and 4 stars respectively, with each describing a commercial project scenario. One reviewer named technician Tony directly, and both praise the crew's willingness to address root causes rather than surface symptoms.
| Sunday | Closed |
| Monday | 8 AM–5 PM |
| Tuesday | 8 AM–5 PM |
| Wednesday | 8 AM–5 PM |
| ThursdayToday | 8 AM–5 PM |
| Friday | 8 AM–5 PM |
| Saturday | Closed |
Professional installation of new commercial heating and cooling systems for retail buildings, office complexes, and facilities throughout the Mukilteo area.
Emergency and scheduled repairs for all commercial HVAC system types, performed by NATE-certified technicians with rapid response times.
Service agreements offering proactive maintenance to extend equipment life, improve energy efficiency, and reduce operational costs for building owners.
Free four-hour initial assessments for new customers and buildings to identify system vulnerabilities and develop comprehensive solution plans.
Round-the-clock emergency service with human operators answering calls 24/7/365 to minimize business disruption from HVAC failures.
Multi-location HVAC management for national retail brands requiring consistent service standards across multiple facilities.