A Climate Efficiency Partner

Commercial HVAC Installation & Design-Build Services in the Pacific Northwest

Right-Sized Systems. Real Cost Control.

TSS HVAC is your full-service partner for commercial HVAC design-build and installation. We deliver custom, energy-efficient systems for properties ranging from 3,000 to 500,000 square feet. Since 1985, businesses across the Pacific Northwest have trusted our team for precise planning, expert engineering, and flawless execution; on time and within budget.

Why Choose TSS HVAC?

Human Support - Always

Real people, 24/7 - no phone trees.

Full Project Lifecycle Support

From design to install, our in-house team handles everything.

HVAC Design-Build

At TSS HVAC, our design-build approach combines HVAC engineering, construction, and installation into one streamlined process. This method simplifies coordination, shortens project timelines, and gives you a single point of accountability from first concept to final commissioning.

More importantly, it sets the foundation for energy-efficient system design from the start. We engineer solutions that align with your performance needs, operational goals, and sustainability standards delivering HVAC systems that are built to perform, built to last, and built to lower your energy costs.

Commercial HVAC Installation & Project Services

We provide full-service oversight for all facility projects. Whether you are upgrading an existing space or starting from scratch, our team delivers:

System Retrofits & Replacements

Often viewed as “service work,” we treat retrofits as major efficiency projects. We integrate high-efficiency systems and smart controls into aging buildings to improve comfort and drastically reduce energy waste.

New Construction & Major Projects

We collaborate with owners and architects to design and install commercial HVAC systems optimized for long-term performance and cost efficiency.

Commercial cooling is about more than just lowering the temperature; it’s about maintaining air quality and managing humidity in high-traffic environments.

  • Variable Refrigerant Flow (VRF): High-efficiency cooling that allows for zoned temperature control across different office sections.
  • Rooftop Units (RTU): Space-saving, all-in-one cooling solutions ideal for retail and industrial footprints.
  • Data Center Cooling: Specialized precision cooling to protect your most sensitive hardware from heat-related failure.
The Pacific Northwest requires heating systems that can handle damp, biting cold without sending utility bills through the roof.
  • Commercial Heat Pumps: Sustainable heating that extracts ambient heat from the air or ground to warm your facility efficiently.
  • High-Output Furnaces: Reliable, high-AFUE gas furnaces designed for rapid heating in large, open-concept spaces.
  • Boiler Systems: Specialized hydronic heating for consistent, quiet warmth in multi-unit complexes or older infrastructure.

Commercial AC & Heating Installation

From load capacity analysis to ductwork evaluation, we ensure your heating and cooling systems are perfectly sized for your footprint.
  • Tailored Cooling: Precision AC for your specific layout.
  • Efficient Heating: Furnace and heat pump systems built for PNW winters.
  • Transparent Recommendations: Budget-friendly options with no hidden fees.

Energy Efficiency Project Development & Financing

Through our partnership with Climate Efficiency Partners (CEP), we offer performance-based financing for energy upgrades; ideal for ESG-conscious clients.

Benefits for Your Business

About Plan & Spec Services

While we specialize in custom design-build solutions, TSS HVAC also provides professional Plan & Spec services for clients with pre-defined engineering requirements. We deliver reliable, high-quality execution that meets your specific procurement and performance standards.

Types of Systems We Install

Single-Split Systems

Ideal for small spaces – one outdoor unit, one indoor unit.

Multi-Split Systems

These systems connect multiple indoor units to one outdoor unit, allowing for customized temperature settings in different zones.

Rooftop Units (RTUs)

Packaged units installed on the roof to save indoor space and simplify service access.

Hybrid Split Systems

Energy-efficient systems that switch between gas and electric to optimize performance.

30+ Years of Excellence in Commercial HVAC Installation

Since 1985, businesses across the Pacific Northwest have relied on us as their commercial HVAC installation contractors. Our NATE-certified technicians deliver fast, dependable service that keeps systems running efficiently. With long-standing industry affiliations and partnerships with leading brands, we’ve built a reputation for excellence that stands the test of time.

Idaho, Portland, & Seattle

Richland Federal Building, Washington
Richland Federal Building received a 96+% Customer Satisfaction Rating for Operations & Maintenance. Customer satisfaction ratings that high are ‘unheard of’ within both GSA and its stable of contractors. I would like to extend TSS thanks and the highest commendations for the great work you and you’re techs have done here.
Metro Tech
We want to thank you for providing excellent service…we appreciate your hard work. We wish more contractors had the urgency TSS techs do.
Katie Gries, MHA, CPC, West Idaho Orthopedics & Sports Medicine
Thank you very much for your prompt response! You guys have been great to work with and I appreciate the honesty of the techs when they come out!” TSS has replaced the HVAC Company we were working with.

Companies We Support

Your Reliable Commercial HVAC Team in the Pacific Northwest

Total System Services is one of the most well-established heating, ventilation, and air conditioning service companies in the Pacific Northwest. We offer commercial and governmental HVAC repairs, maintenance, and installation in Idaho, Oregon, and Washington.