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 Heater Maintenance & Repair in Calgary: Your Complete 2026 Guide

Your Reznor unit heater is working hard — likely 7–8 months out of every year in Calgary’s demanding climate. Like any commercial mechanical system under that kind of sustained load, it needs proper maintenance to perform at peak efficiency, and it will occasionally need repairs. Knowing what to expect, when to call for service, and how to find qualified help in Calgary can save your business significant money and downtime.
This guide from Next Air — Calgary’s dedicated Reznor commercial heating specialists — covers everything: annual maintenance schedules, the most common Reznor unit heater problems in Calgary, repair cost expectations, and what distinguishes a true emergency from a routine service call.

Internal Link: Book a Reznor unit heater service call with Next Air
Internal Link: 24/7 emergency heating repairs in Calgary

Why Regular Maintenance on Reznor Unit Heaters Is Non-Negotiable in Calgary

Calgary’s heating season is one of the longest in Canada. Your Reznor unit heater may run nearly continuously from October through April — 6–7 months of nearly daily operation. This creates natural wear on burner components, heat exchanger surfaces, fan motors, and control systems. Without regular maintenance:

Efficiency degrades — meaning higher gas bills without more heat
Minor issues compound into major failures
Heat exchanger cracks can develop — creating carbon monoxide risk
Ignition failures cause unexpected shutdowns during critical cold periods
Voiding manufacturer warranty if maintenance records aren’t maintained

Calgary businesses on a Next Air commercial maintenance plan avoid the vast majority of emergency breakdowns and extend the service life of their Reznor equipment by years.

Recommended Reznor Unit Heater Maintenance Schedule

Pre-Season Service (September — Before Calgary Winter Sets In)

The most important service call of the year. A pre-season tune-up should include:

Burner cleaning and inspection — remove combustion deposits, check for corrosion
Heat exchanger inspection — look for cracks, separations, or corrosion that could cause CO leakage
Ignition system test — replace spark igniters or hot surface igniters showing wear
Gas valve inspection and pressure test — ensure correct operating pressure
Fan motor and blower inspection — lubricate bearings, check belt tension if applicable
Flue and venting inspection — clear blockages, check for deterioration
Controls and thermostat calibration
Safety control test — high-limit, rollout switches, pressure switches

Mid-Season Check (January/February — Peak Calgary Winter)

A shorter inspection focused on confirming safe operation and addressing any developing issues. Filters changed if applicable, visual inspection of heat exchanger, controls check.

Post-Season Service (April/May — After Calgary Winter)

Burner shutdown, final filter change, motor lubrication for summer standby, documentation of any items to address before next heating season.

Internal Link: Set up a commercial maintenance plan with Next Air

Most Common Reznor Unit Heater Problems in Calgary

1. No Heat / Unit Won't Start

Common causes: failed igniter, faulty gas valve, tripped high-limit switch, pressure switch failure. A Next Air technician can typically diagnose and resolve this on a single service call.

2. Insufficient Heat Output

Common causes: dirty or blocked burner, deteriorating heat exchanger, undersized unit for the space (or building envelope changes that increased heating load), fuel pressure issues. In Calgary’s -30°C weather, insufficient heat can shut down business operations entirely.

3. Unit Cycles On/Off Rapidly (Short-Cycling)

Common causes: oversized unit for the space, dirty air filters (on filter-equipped models), tripping high-limit switch due to restricted airflow or overheating. Short-cycling dramatically increases wear and reduces efficiency.

4. Unusual Noises

Banging on startup: delayed ignition — a serious issue requiring immediate attention. Squealing: worn fan motor bearings. Rattling: loose panels or fan blades. None of these should be ignored in Calgary commercial environments.

5. Fault Codes on LED Display

Reznor UDXC models feature a 7-segment LED fault code display. Common Calgary fault codes include ignition lockout (check igniter and gas supply), high-limit lockout (check airflow and heat exchanger), and pressure switch fault (check venting for blockage — critical in Calgary winters when vent terminations can ice over).

6. Iced/Blocked Vent Terminations

Unique to cold climates like Calgary: unit heater vent terminations can become partially or fully blocked by ice and frost accumulation during extreme cold snaps. This triggers pressure switch faults and shuts down the unit. Regular inspection of vent terminations during extreme weather is an important Calgary-specific maintenance practice.

Reznor Unit Heater Repair Costs in Calgary (2026)

Typical repair cost ranges for common Reznor unit heater issues in Calgary:

Igniter replacement: $280 – $480 including labour
Gas valve replacement: $450 – $850 including labour
Fan motor replacement: $550 – $1,100 including labour
Control board replacement: $600 – $1,200 including labour
Heat exchanger replacement (if repairable): $1,200 – $2,800
Full unit replacement (older systems): varies by model

Note: After-hours emergency calls in Calgary carry a premium service rate. Businesses on Next Air maintenance plans receive priority scheduling and discounted repair rates.

When Is It Time to Replace vs. Repair?

A Reznor unit heater that is well-maintained can last 20+ years. But at some point, repairs stop making economic sense. Consider replacement when:

The heat exchanger is cracked or failed (safety risk, often uneconomical to repair)
The unit is over 15 years old and experiencing repeated breakdowns
Repair costs exceed 50% of the cost of a new unit
A newer high-efficiency model would deliver energy savings that offset replacement cost

Internal Link: Explore Reznor unit heater replacement options
Internal Link: Commercial energy-saving upgrades — calculate your savings

What to Do When Your Reznor Unit Heater Fails in Calgary Winter

A heating failure in a Calgary warehouse or commercial facility during winter isn’t just uncomfortable — it can freeze inventory, damage equipment, and force your business to shut down. Here’s what to do:

Check the LED fault code display on your Reznor unit if accessible
Check that gas supply is on and that other gas appliances in the facility are working
Check for any circuit breakers that may have tripped for the heater’s electrical circuit
Visually inspect vent terminations outside — are they iced over?
If you cannot identify and safely resolve the issue yourself, call Next Air immediately

Do NOT attempt to manually bypass safety controls or operate a unit heater with a known fault. Cracked heat exchangers and gas system failures create serious carbon monoxide and fire hazards.

Reznor unit heater not working? Call Next Air 24/7 at (587) 329-8603. Calgary’s commercial heating emergency specialists.

Internal Link: Explore our Commercial Energy Saving Upgrades

FAQ: Reznor Unit Heater Maintenance & Repair in Calgary (People Also Ask)

Q: How often should Reznor unit heaters be serviced in Calgary?

At minimum, once per year — ideally in September before Calgary’s heating season begins. Facilities with heavy use or older equipment benefit from twice-yearly service (pre-season and mid-winter). Next Air’s commercial maintenance plans provide structured, documented service that protects your warranty and equipment investment.

Q: Why is my Reznor unit heater not igniting?

Common causes include a failed igniter (hot surface igniters wear out over time), a faulty gas valve, a tripped high-limit switch, or a pressure switch fault (often from a blocked vent in Calgary winters). A qualified technician can diagnose the root cause quickly with a fault code reading from the LED display.

Q: How do I reset a Reznor unit heater in Calgary?

Most Reznor unit heaters have a reset button on the control module. However, resetting without diagnosing the underlying cause may allow the unit to restart only to fail again — and in some cases, repeated resets can mask a serious safety issue. Always have a qualified technician diagnose before resetting.

Q: Can Reznor unit heaters freeze up in Calgary winters?

The unit heaters themselves won’t freeze, but vent terminations can ice over during extreme cold snaps, blocking exhaust flow and triggering safety shutdowns. This is a Calgary-specific issue Next Air monitors and addresses proactively for clients on our maintenance plans.

Q: Does Next Air offer 24/7 emergency Reznor repair in Calgary?

Yes. Next Air provides 24/7 emergency commercial heating repair across Calgary and surrounding communities. Our service vehicles are stocked with common Reznor parts for first-visit resolution whenever possible. Call (587) 329-8603.

Internal Link: Book a Reznor maintenance visit today
Internal Link: Commercial furnace and heating services in Calgary