Commercial HVAC Installations – Expert Systems for Businesses

Professional. Scalable. Built to Last.

Creating a comfortable and efficient commercial space starts with expert HVAC installations. Weiss-Johnson specializes in designing and implementing heating, cooling, and ventilation systems that meet high performance and compliance standards.

Our certified technicians provide tailored solutions for multifamily buildings, commercial properties, and rooftop unit upgrades. We focus on precision engineering, ensuring systems are energy-efficient, reliable, and built to last.

Serving general contractors, developers, and property managers across Edmonton, Calgary, and beyond, our installations are scalable and code-compliant. We go beyond installation—we optimize, keeping your building running smoothly with systems that work as hard as you do.

Trust Weiss-Johnson for expert craftsmanship and strategic solutions. Let’s build something that stands the test of time.

Hire Plumbing Experts You Can Trust

Let Weiss-Johnson help you transform your garage into a warm, comfortable space you’ll actually want to spend time in.

Explore Our Commercial Installation Services

From office buildings to mixed-use facilities, our HVAC installation services are engineered to support large-scale performance, energy efficiency, and long-term reliability.

We specialize in heating and cooling installations for apartment complexes, condos, and townhomes. Trust Weiss-Johnson to keep your residents comfortable—and your systems worry-free.

We supply and install high-efficiency rooftop units that are designed for Alberta’s rugged climate. From new installations to replacements, we’ll help you maximize uptime and minimize costs.

Ensure proper ventilation and air quality with custom-installed MUA systems tailored to your facility’s size, use, and compliance needs.

We handle the full installation and replacement of commercial exhaust fans for kitchens, bathrooms, and mechanical spaces—with minimal downtime and maximum performance.

When Is the Right Time to Develop or Renovate Your Basement?

Alberta’s Largest Family-Owned HVAC Company

We bring the personalized service of a family-run business with the scale and capacity to handle the most demanding commercial projects.

Dedicated Commercial Team

Our commercial HVAC installers, project managers, and certified technicians are trained for large-scale systems and construction environments.

In-House Sheet Metal Fabrication

Faster turnaround, better quality control, and fully customized ductwork from our on-site fabrication shop.

Up-to-Date on Codes & Permits

We know the provincial building codes inside and out—and ensure every system is installed safely and to standard.

Safety-First Culture

We maintain strict safety standards on every job site. Your timeline matters, but safety comes first.

Long-Term Support & Maintenance Options

Your install is just the beginning. We offer scheduled commercial maintenance plans to keep your systems performing year-round.

Why Choose Us

Choosing a properly licensed and insured company is your best option when it comes to a plumbing service provider. With nearly 50 years of experience helping homes and businesses in Edmonton, our technicians are all knowledgeable and certified professionals in the industry, making us the perfect choice to keep your home or business running smoothly. We are available 24/7 for emergencies, so you can count on us no matter what time of day it is.