Rooftop Units (RTU) Service & Replacement

We handle the full lifecycle of commercial rooftop units, from troubleshooting and repair to full replacement and commissioning.

Commercial Rooftop Unit (RTU) Services

Commercial rooftop units are the backbone of heating and cooling for many buildings. When an RTU fails, comfort drops, energy costs rise, and operations are disrupted. Express Refrigeration provides professional rooftop unit (RTU) service and replacement in Calgary, helping businesses restore performance quickly and avoid costly downtime.

Our technicians service, repair, and replace rooftop HVAC units for commercial properties across Calgary and surrounding areas. Whether your unit is short-cycling, not heating or cooling properly, or nearing the end of its lifespan, we deliver clear answers and reliable solutions.

Call now to book RTU service or request an on-site assessment.

Full-Scope Rooftop Unit (RTU) Solutions

Rooftop Unit Repairs

Fast, accurate repairs for common RTU problems such as failed compressors, ignition issues, blower motor faults, electrical failures, refrigerant leaks, and control board issues. We focus on restoring safe, reliable operation without unnecessary replacements.

Rooftop Unit Installation & Replacement

When repairs are no longer cost-effective, we provide complete RTU replacement. This includes unit selection, crane coordination, removal of old equipment, installation, start-up, and system testing to ensure proper airflow and efficiency.

Preventative Maintenance Plans

Regular RTU maintenance reduces breakdowns, improves efficiency, and extends equipment life. Our commercial maintenance plans include inspections, cleaning, performance checks, and early problem detection before failures occur.

Commercial Rooftop Unit Services

Open commercial rooftop HVAC unit showing internal electrical components during maintenance inspection

Rooftop Unit Component Repairs

We repair and replace critical RTU components, including: Compressors and condenser fans, Electrical controls and contactors Addressing component issues early helps prevent full system failure and unplanned shutdowns.

HVAC technician performing rooftop commercial unit maintenance with access panel open

Emergency Rooftop Unit Repairs

Loss of heating or cooling can stop business operations. We offer emergency RTU service for urgent breakdowns, helping stabilize systems and restore comfort as quickly as possible.

Your Calgary Rooftop Unit Experts

Express Refrigeration is a Calgary-based commercial HVAC and refrigeration company focused on fast, reliable service. Our technicians bring over a decade of hands-on experience working with commercial rooftop units in restaurants, retail spaces, warehouses, and office buildings.

Why businesses trust us for RTU service:
Clear diagnostics and honest recommendations
Fast response times for urgent issues
Experienced technicians who work on all major brands
Commercial-focused service, not residential shortcuts
A straightforward approach built on “just better service”

Schedule your rooftop unit service today.

How it works

Commercial refrigeration issues can’t wait — and neither do we. Our process is built to give you quick answers, reliable solutions, and clear communication from start to finish.

Step One - Request Service

Call or contact us to describe the RTU issue. We gather key details to prepare for the visit.

Step Two - On-Site Diagnosis

A technician inspects the rooftop unit, tests components, and identifies the root cause of the problem.

Step Three - Repair or Maintenance

We explain your options clearly. Repairs are completed where possible. If replacement is recommended, we outline the scope, timeline, and next steps.

See How We’ve Helped Calgary Businesses

When refrigeration or HVAC equipment fails, downtime can get expensive fast. That’s why business owners choose us for fast response times, clear communication, and dependable repairs. Here’s what clients say after working with our team.

Logan Wood
Logan WoodRestraunt Owner
"Express Refrigeration showed up within a couple of hours when our walk-in cooler failed. The technician diagnosed the issue quickly, explained everything in simple terms, and had us back up and running the same day. Reliable, honest, and exactly what a busy kitchen needs."
Megan Li
Megan LiOperations Manager – Airdrie
“We’ve used Express Refrigeration for HVAC and refrigeration maintenance across our facility. Their team is professional, punctual, and their work is solid. They’re now our go-to for every service request.”
Daniel Brooks
Daniel BrooksGrocery Store Supervisor – Chestermere
“Our freezer went down on a weekend, and they still made it out fast. The technician knew exactly what to do, and the repair saved us from losing thousands in product. Truly ‘just better service.’ Highly recommend.”

Rooftop Unit (RTU) Services FAQ's

Open commercial rooftop HVAC unit showing internal electrical components during maintenance inspection
What types of rooftop units do you service?

We service and repair most commercial rooftop HVAC units, including gas/electric RTUs, heat pump systems, and packaged units. Our technicians work on all major brands and can troubleshoot heating, cooling, airflow, and control issues.

If your unit is frequently breaking down, struggling to maintain temperature, or driving up energy costs, it may be time to consider replacement. We always inspect the system first and give honest advice. If a repair makes sense, we will recommend it before suggesting replacement.

Yes. We provide emergency service for rooftop units when heating or cooling failures impact your business operations. Our team responds quickly to diagnose the issue and restore comfort while minimizing downtime.

Most rooftop unit replacements can be completed within a day, depending on the size of the unit, crane access, and electrical or gas modifications. We plan installations carefully to reduce disruption to your business.

Absolutely. Preventative maintenance helps catch small issues early, improves efficiency, and extends the lifespan of rooftop units. Regular servicing also reduces the risk of unexpected breakdowns during peak seasons.

Yes. We assess your building size, usage, existing ductwork, and energy needs before recommending a unit. Our goal is to install a system that delivers reliable performance, lower operating costs, and long-term value.

Don’t Let Rooftop Unit Problems Disrupt Your Business

If your rooftop unit is underperforming or has stopped working, quick action matters. Express Refrigeration delivers dependable RTU service and replacement in Calgary to keep your building comfortable and operational.