TSS HVAC Services
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About TSS HVAC Services
TSS HVAC Services operates as a commercial-focused HVAC contractor based in Mukilteo, Washington, holding a 4.5-star rating distilled from two client reviews. The company maintains standard weekday service hours from 8 AM to 5 PM, with weekend availability suspended. Having served the Pacific Northwest region since 1985, TSS has cultivated enduring partnerships with property management firms including Cushman & Wakefield, Colliers, and Thornton Oliver Keller, positioning itself as a regional specialist for commercial property stakeholders.
What distinguishes TSS from broader-spectrum competitors is their deliberate concentration on commercial HVAC systems, maintaining dedicated account teams for national retail brands such as Nike, PetSmart, Home Depot, and Starbucks alongside institutional clients like Bank of the West and the Idaho Department of Health and Welfare. Their service model integrates NATE-certified technician deployment with service agreements featuring rapid-response commitments, complemented by a complimentary four-hour initial assessment for new commercial accounts, a policy that enables thorough vulnerability identification before system failures escalate.
Customer feedback underscores this operational philosophy. Reviewer Alex and Katy highlighted crew member Tony's commitment to flawless project completion during a commercial unit replacement in Seattle, while reviewer Mike D. specifically noted TSS's approach of investigating root causes rather than surface symptoms. Both reviewers awarded favorable ratings, reflecting consistent service delivery across varied commercial environments.
What Customers Say
Both reviewers awarded favorable ratings (5 stars and 4 stars), yielding a 4.5-star composite average. Positive feedback emphasizes root-cause diagnostics and technician dedication, with one reviewer specifically naming crew member Tony for going above and beyond during a commercial replacement project.
Working Hours
| SundayToday | Closed |
| Monday | 8 AM–5 PM |
| Tuesday | 8 AM–5 PM |
| Wednesday | 8 AM–5 PM |
| Thursday | 8 AM–5 PM |
| Friday | 8 AM–5 PM |
| Saturday | Closed |
Services
Commercial HVAC Replacement
Complete commercial unit replacement including equipment procurement, installation, and post-installation testing for retail and institutional facilities.
Preventive Maintenance Programs
Scheduled service agreements designed to extend equipment lifespan, improve operational efficiency, and reduce unexpected failure risiko.
Emergency Repair Services
Rapid-response deployment for commercial HVAC emergencies, minimizing facility disruption and tenant complaints.
System Diagnostics & Root Cause Analysis
Comprehensive troubleshooting identifying underlying failure mechanisms rather than symptomatic repairs, per reviewer feedback.
NATE-Certified Technician Services
Factory-trained and certified technicians providing professional assessments, repairs, and installations meeting industry standards.
National Account Coverage
Multi-location service capabilities for national retail brands with standardized performance expectations across franchise networks.
Free Commercial Building Assessment
Four-hour complimentary evaluation for new commercial accounts, enabling informed budgeting and priority-setting for system improvements.