How fast can you respond to a commercial HVAC emergency in Calgary?

Next Air responds to commercial HVAC emergencies in Calgary within 1–2 hours. Our service trucks are stocked with the most common parts so most problems are fixed on the first visit, minimizing costly downtime for your business. We offer 24/7 emergency service — call (587) 329-8603 any time.

What does commercial HVAC maintenance include?

Our commercial HVAC maintenance service includes a full inspection and cleaning of all system components: refrigerant level checks, coil cleaning, filter replacement, electrical component testing, lubrication of moving parts, thermostat calibration, gas burner inspection, and safety testing. Regular maintenance prevents expensive breakdowns, improves energy efficiency, and extends the life of your equipment.

How much does commercial HVAC maintenance cost in Calgary?

Commercial HVAC maintenance costs in Calgary vary based on the number and type of units, building size, and service frequency. Per-visit costs typically range from $200–$500, while annual maintenance contracts for commercial properties generally range from $1,000 to $10,000+ per year depending on system complexity. Next Air offers customized maintenance plans — contact us for a free quote.

How often should commercial HVAC systems be serviced in Calgary?

Most commercial HVAC systems in Calgary should be serviced at least twice a year — ideally in spring and fall before peak seasons. Systems with air filters (such as rooftop units and make-up air units) should receive a minimum of 3–4 service visits per year. Given Calgary's extreme winters and temperature swings, more frequent maintenance helps prevent costly cold-weather breakdowns.

How long does a commercial rooftop HVAC unit (RTU) last?

With proper maintenance, a commercial rooftop unit (RTU) typically lasts 15–20 years. In Calgary's harsh climate — including severe winters and Chinook temperature swings — units that are poorly maintained may fail sooner. Regular maintenance by certified technicians is the single biggest factor in extending RTU lifespan. If your unit is over 15 years old and experiencing frequent breakdowns or rising energy costs, it may be time to consider replacement.

How do I know if my commercial rooftop unit needs repair or replacement?

Signs that your commercial RTU may need repair or replacement include: frequent breakdowns, rising energy bills, inconsistent temperatures throughout your building, unusual noises or smells, and age over 15 years. A general rule: if repair costs exceed 30–40% of the cost of a new unit, replacement is usually the better investment. Next Air will inspect your system and give you an honest recommendation.

How much does it cost to install a commercial rooftop HVAC unit in Calgary?

Commercial rooftop unit (RTU) installation in Calgary typically costs between $8,000 and $25,000+ CAD per unit, depending on size (tonnage), system complexity, crane requirements, ductwork changes, and permit fees. City of Calgary mechanical and gas permits are required and are handled by our licensed technicians. Contact Next Air for a free site assessment and installation quote.

Do you service commercial refrigeration systems in Calgary?

Yes, Next Air services all types of commercial refrigeration equipment throughout Calgary. Our technicians are experienced with walk-in coolers and freezers, refrigerated display cases, ice machines, and industrial refrigeration systems. We serve restaurants, grocery stores, food service businesses, and more — keeping products safely refrigerated and your operations running.

What are the benefits of a commercial HVAC maintenance contract?

A commercial HVAC maintenance contract provides: priority emergency service, reduced risk of unexpected breakdowns, lower long-term repair costs, improved energy efficiency, extended equipment lifespan, and predictable budgeting. Businesses on maintenance contracts with Next Air also receive detailed service reports after every visit, making it easier to plan capital expenditures and track system health.

Why should I choose a commercial-only HVAC company instead of a residential contractor?

Commercial HVAC systems are significantly more complex than residential units — they handle larger loads, more complex ventilation requirements, and stricter building codes. Next Air focuses 100% on commercial and industrial HVAC, meaning our technicians are specifically trained on commercial equipment like rooftop units, make-up air systems, tube heaters, and commercial refrigeration. Residential HVAC companies often lack the expertise and equipment for commercial-scale systems.

How much can Calgary businesses save with energy-efficient commercial HVAC?

Most Calgary businesses save 15–30% on energy costs after upgrading to high-efficiency HVAC equipment or getting proper maintenance from Next Air. Calgary's long heating season and frequent temperature extremes make energy-efficient systems especially valuable here — they recover faster after Chinooks, maintain more consistent temperatures, and use significantly less energy during deep freezes. We provide a free energy assessment to show you the exact savings potential.

Do you offer 24/7 commercial HVAC emergency service in Calgary?

Yes. Next Air provides 24/7 emergency commercial HVAC service throughout Calgary and surrounding areas including Airdrie, Cochrane, Okotoks, and Chestermere. Call us any time at (587) 329-8603. Our response target for emergencies is 1–2 hours, and our trucks are stocked with common parts to resolve most issues on the first visit.

What commercial HVAC brands do you install and service?

Next Air installs and services all major commercial HVAC brands including Carrier, Lennox, Daikin, Mitsubishi, York, Bryant, Rheem, Reznor, Modine, Calcana, Schwank, Roberts Gordon, Keeprite, Heil, Coleman, Fujitsu, Allied, and Payne. Our technicians are trained across all brands and can perform warranty repairs on all major commercial equipment.

What commercial heating services does Next Air offer in Calgary?

Next Air offers a full range of commercial heating services in Calgary including: commercial furnace installation and repair, unit and tube heaters, commercial radiant heating, commercial heat pumps, exhaust fans, and make-up air units. We service all major brands and provide installation, repair, and preventative maintenance for all heating equipment types.

What areas near Calgary does Next Air serve?

Next Air provides commercial HVAC services throughout the Calgary area and surrounding communities, including Airdrie, Canmore, Okotoks, Cochrane, High River, Strathmore, Bragg Creek, Chestermere, Langdon, Didsbury, and De Winton. Call (587) 329-8603 to confirm service availability in your specific location.

What permits are required for commercial HVAC installation in Calgary?

The City of Calgary requires mechanical and gas permits for commercial HVAC installations, including rooftop unit replacements. Permit fees can range from $500 to $2,000+ depending on project scope. As a licensed commercial HVAC contractor, Next Air handles all permit applications and ensures every installation meets Calgary building codes and Alberta safety standards.

How long does a commercial HVAC installation take?

Most commercial HVAC installations in Calgary take anywhere from a few days to a couple of weeks depending on system size and complexity. A straightforward rooftop unit replacement can often be completed in 2–5 days, while larger projects involving new ductwork, crane lifts, or full system design may take longer. Next Air works around your schedule to minimize business disruption and provides a clear timeline after a site visit.

Is it worth upgrading an older commercial HVAC system in Calgary?

In most cases, yes. Older commercial HVAC systems — especially those 15+ years old — are significantly less efficient than modern units and are more expensive to run and repair. In Calgary's climate, newer systems handle extreme cold more effectively, recover faster from Chinook temperature swings, and offer smart controls for better energy management. Most Calgary businesses recoup upgrade costs through energy savings within a few years.

What is a make-up air unit and does my commercial building need one?

A make-up air unit (MAU) replaces air that is exhausted from a commercial building — such as through kitchen exhaust fans, industrial ventilation, or bathroom fans. Without proper make-up air, negative pressure can cause heating issues, back-drafting of combustion appliances, poor indoor air quality, and drafts. Many commercial buildings in Calgary — especially restaurants, warehouses, and industrial facilities — require make-up air units to meet ventilation code requirements. Next Air can assess your building's needs and install or service commercial make-up air systems.

How do I choose the right commercial HVAC contractor in Calgary?

When choosing a commercial HVAC contractor in Calgary, look for: a contractor who specializes in commercial systems (not just residential), licensed and insured technicians, experience with your specific equipment type and brands, transparent upfront pricing, detailed service reports, strong local reviews, and 24/7 emergency availability. Next Air focuses exclusively on commercial and industrial HVAC, serving businesses across Calgary with certified technicians who know local building codes and Alberta's climate demands.

Reznor Unit Heaters for Calgary Warehouses: The Complete 2026 Guide

Calgary winters are brutal. With temperatures regularly plunging to -30°C and beyond, warehouses, auto shops, manufacturing plants, and commercial facilities across the city need heating systems built for serious cold. That’s exactly why Reznor unit heaters have become the go-to choice for Calgary business owners who refuse to compromise on comfort, efficiency, or reliability.
In this complete guide, Next Air — Calgary’s commercial HVAC specialists — breaks down everything you need to know about Reznor unit heaters: how they work, which models are right for your space, what installation looks like, and why hundreds of Calgary businesses trust this technology to keep their operations running through even the deepest Alberta winter.

Internal Link: Explore our Unit & Tube Heater services
Internal Link: View our full Reznor commercial heating services

What Is a Reznor Unit Heater?

Next Air Commercial HVAC Emergency: 587-329-8603 — Available 24 hours, 7 days a week, 365 days A Reznor unit heater is a ceiling-mounted or suspended gas-fired forced-air heating unit designed for commercial and industrial spaces. Unlike central furnace systems that distribute heat through ductwork, unit heaters are self-contained: each unit houses a gas burner, heat exchanger, blower fan, and controls in a single compact package. They hang from the ceiling, blow heated air downward and outward, and can precisely heat large open areas — including warehouses, garages, workshops, hangars, and manufacturing floors.
Reznor has been manufacturing unit heaters for over 130 years, and their systems are renowned in the industry for efficiency, durability, and consistent performance in demanding environments like Calgary’s climate. a year. We serve Calgary, Airdrie, Okotoks, Cochrane, Chestermere, Canmore, and Strathmore.

Why Reznor Unit Heaters Excel in Calgary's Climate

Not all commercial heaters are engineered with Canada’s deep-freeze winters in mind. Reznor unit heaters are, and here’s why they outperform generic alternatives in the Calgary market:

1. Separated Combustion Technology

Many Reznor models — particularly the flagship UDXC series — offer separated combustion configurations. This draws combustion air from outside rather than from the heated space. In Calgary’s frigid winter months, this means the burner operates cleanly and efficiently regardless of how cold outdoor temperatures get, and it eliminates the risk of pulling in dust, paint fumes, or debris common in industrial environments.

2. High-Efficiency Heat Exchangers

Reznor’s proprietary TCORE2 heat exchanger, made from titanium-stabilized aluminized steel, delivers superior heat transfer while resisting corrosion over years of use. Calgary’s heating season can run 7–8 months per year, meaning your unit heater works harder and longer than in most other North American cities. The TCORE2 design is built for exactly this kind of sustained, heavy-duty operation.

3. BTU Range for Any Commercial Space

Reznor unit heaters are available in sizes ranging from 30,000 BTU to 400,000 BTU, making them scalable for everything from a single-bay auto shop to a massive distribution warehouse. Calgary commercial spaces vary enormously in size and ceiling height — Reznor’s broad range means there’s a right-sized solution for virtually every application.

4. Quiet Operation

Reznor’s vibration-isolated fan and venter motors ensure quiet operation — a significant advantage for auto shops, retail spaces, and office-adjacent commercial environments where noise disrupts work.

Top Reznor Unit Heater Models for Calgary Commercial Applications

Reznor UDXC — The Commercial Workhorse

The UDXC is Reznor’s most popular commercial unit heater in Canada. Available in 14 sizes from 30,000 to 400,000 BTUH, it features the TCORE2 heat exchanger, propane conversion capability, and external LED fault code display for simplified troubleshooting. The modern two-tone powder-coated finish and clean design make it a popular choice for customer-facing commercial spaces as well as industrial environments.

Reznor UDX — Residential & Light Commercial

The UDX series is ideal for smaller commercial applications — single-bay garages, smaller workshops, and light commercial spaces. Available in six sizes with optional propane conversion kits, it’s a cost-effective entry point into the Reznor ecosystem.

Reznor Tube Heaters — For Large Open Spaces

For larger warehouses and distribution centres with very high ceilings, Reznor’s infrared tube heaters complement their unit heater lineup by delivering radiant floor-level warmth across wide areas without heating the full air volume. This is especially effective in spaces where doors open frequently, such as loading docks.

Internal Link: Learn more about tube heaters and unit heaters
Internal Link: Explore Reznor tube heater options at Next Air

Reznor Unit Heater Applications in Calgary

Reznor unit heaters are trusted across virtually every type of Calgary commercial and industrial facility:

Warehouses and distribution centres
Auto repair shops and car dealerships
Manufacturing and production facilities
Aviation hangars at Calgary International Airport
Retail backrooms and loading dock areas
Commercial greenhouses
Fire stations and municipal facilities
Sports arenas and recreation centres
Churches and large assembly spaces

March–April: Transition Season Issues

Chinook season brings rapid temperature swings that stress equipment switching between heating and cooling modes. Heat exchanger cracks from winter thermal stress often reveal themselves during this period. A spring maintenance visit is the best way to catch these issues before they become emergencies.

Professional Installation Matters — Especially in Calgary

Reznor unit heaters are high-performance commercial systems, and proper installation is critical to safe operation, peak efficiency, and warranty compliance. In Calgary and across Alberta, natural gas appliances must be installed by a certified gas fitter in compliance with the Alberta Gas Code and local municipal requirements.
At Next Air, our TSSA-certified technicians have deep experience with Reznor unit heater installations across Calgary. We conduct detailed load calculations to ensure right-sizing, handle all gas line connections, venting configurations, and electrical hookups, and provide documentation for your building permits.
A Calgary business owner who tries to cut corners on installation often ends up with a unit that’s oversized (short-cycling, inefficient), undersized (can’t keep up with Calgary cold), or incorrectly vented (a safety hazard). Professional installation by Next Air eliminates all of these risks.

Internal Link: Learn about our Commercial System Design & Installation services

How Much Does Reznor Unit Heater Installation Cost in Calgary?

Installation costs vary based on unit size, the number of units required, gas line routing complexity, and venting configuration. For a detailed breakdown, see our dedicated cost guide. As a general benchmark, Calgary businesses typically invest between $3,500 and $12,000+ per unit for supply and professional installation, with larger, more complex industrial applications at the higher end.
Most Calgary businesses report recovering this investment through energy savings within 2–4 years, especially when upgrading from older, less efficient heating systems.

Internal Link: Read our full Reznor unit heater cost guide for Calgary
Internal Link: Explore energy-saving upgrade options

Reznor Warranty & Long-Term Value

Reznor backs their unit heaters with a 5-year parts warranty and a 10-year heat exchanger warranty — one of the strongest warranty programs in the commercial heating industry. In Calgary’s demanding climate, this level of manufacturer backing provides significant peace of mind for business owners making a long-term capital investment.
Combined with professional installation and a preventative maintenance plan from Next Air, a Reznor unit heater can deliver 15–25 years of reliable service in Calgary’s commercial environment.

FAQ: Reznor Unit Heaters in Calgary (People Also Ask)

Q: Are Reznor unit heaters good for Calgary winters?

Yes — Reznor unit heaters are among the best commercial heating solutions for Calgary’s extreme winter climate. Their high-BTU output, separated combustion technology, and durable heat exchangers are specifically engineered for sustained operation in harsh cold-weather environments.

Q: How long do Reznor unit heaters last in a Calgary warehouse?

With professional installation and regular maintenance, Reznor unit heaters typically last 15–25 years in commercial settings. Reznor’s 10-year heat exchanger warranty reflects their confidence in long-term durability.

Q: Do Reznor unit heaters work on natural gas in Calgary?

Yes. Reznor unit heaters are available in natural gas configurations — the most common fuel source for Calgary commercial buildings — and can be converted to propane where natural gas service is unavailable.

Q: Can I install a Reznor unit heater myself in Calgary?

No. In Alberta, natural gas appliances must be installed by a certified gas fitter in compliance with the Alberta Gas Code. Attempting DIY installation voids the warranty, creates serious safety risks, and may violate local building codes.

Q: Who services Reznor unit heaters in Calgary?

Next Air is Calgary’s dedicated Reznor commercial heating specialist. Our certified technicians provide installation, repair, maintenance, and emergency service for all Reznor unit heater models across Calgary and surrounding communities.

Internal Link: Get a free quote — Commercial Heating Services
Internal Link: Emergency heating repairs — available 24/7