How much does it cost to install a garage heater in Calgary?

Most residential garage heater installations come in between $2,500 and $5,000. The variables are heater size (BTU), gas-line length, venting requirements, and any electrical work. Heated workshop installs sit higher because of bigger units and more involved venting. Quotes are free and itemized.

What size garage heater do I need?

For a standard insulated double garage, plan on 45,000–60,000 BTU. Tall ceilings, uninsulated walls, and detached buildings push that number up. We do a proper heat-load calculation on site so the unit can hold your target temperature on the coldest Calgary day without short-cycling.

Are gas garage heaters safe?

Yes — when installed correctly. Modern Reznor unit heaters include flame sensors, overheat protection, and sealed-combustion options for tight spaces. Safe operation comes down to proper venting, gas connections, and clearances, all of which a permitted install handles.

Do I need a permit to install a garage heater?

Yes. Calgary requires a gas permit for any new gas appliance, and most municipalities also want a building/electrical permit for the thermostat circuit. We handle the permit applications and the inspection scheduling as part of every install.

Reznor vs. Modine vs. Mr. Heater — which brand should I pick?

We install Reznor most often because the parts and warranty support are strong across Alberta. Modine is a fine alternative. Big-box brands like Mr. Heater Big Maxx work but warranty service is limited. Whichever you pick, the install quality matters more than the badge.

Calgary Garage Heating Specialists

Garage Heater Installation in Calgary

Turn your cold garage or workshop into a year-round usable space. We install Reznor unit heaters with proper sizing, permits, gas, venting, and electrical — done right the first time.

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Join hundreds of satisfied Calgary homeowners who trust Air Force Heating for their heating and cooling needs.

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What Our Customers Say

Real reviews from real Calgary homeowners. See why we're the trusted choice for heating and cooling services.

Ilhan Ahmed

5 days ago

Good experience with Air Force Heating and Air Conditioning overall. Had a Gree heat pump installed and Ivan, Dima and Rustam did the job. They showed up on time, were polite, and kept things clean during install. System is working good and you can feel the difference already. Only small thing is I had to ask a couple questions after they left to understand all the settings, but not a big deal. Solid service, would recommend.

•k

8 days ago

Great customer service and quality work. Dima was superb! Would recommend to anyone.

Nassereddin Eftekhar (Nasser)

8 days ago

I just had an air conditioning unit installed at home, and I couldn’t be more thrilled! The team was fantastic—super efficient and committed to quality at every step. What really impressed me was their honesty; they communicated everything clearly and set realistic expectations. I highly recommend them for anyone looking to enhance their comfort!

Mandi K

12 days ago

Ivan, Mike and the whole team were extremely professional and very friendly. I couldn’t be happier with my AC install. I will recommend them to all friends and family. Thanks Air Force!

Karyna Shvarts

1 month ago

Our furnace went out during a cold snap and they were here within hours. Professional, friendly, and had us back up and running in no time. If you want it done right the first time, call these guys.

One Stop HVAC

1 month ago

Very polite! Great to have bussines with Air Force!

Kristina Dominguez

3 months ago

Air Force Heating is great to work with, I’ve hired them on several occasions and always happy with their great service and expertise. Mike showed up on time, was super friendly and got the report back to us quickly. Looking forward to working with them again.

Pronto Inc

4 months ago

Happy new year to Air Force Heating from Pronto Plumbing Calgary

Calgary Garage Heater Sizing Guide

Right-sizing matters more than brand. An undersized heater never catches up on a cold morning; an oversized one short-cycles and wastes gas. Use this as a starting point — we confirm the exact BTU on site.

Single garage (350–450 sq ft): 30,000–45,000 BTU
Standard double garage (450–600 sq ft): 45,000–60,000 BTU
Triple garage or 9 ft ceilings (700–900 sq ft): 60,000–75,000 BTU
Heated workshop (900–1,200 sq ft): 75,000–100,000 BTU
Insulated shop (1,500+ sq ft): 100,000–150,000 BTU
Uninsulated detached garage: add ~25% to recommended BTU
Tall ceiling (12 ft+): add ~15% to recommended BTU
Concrete-floor cold-soak: add a programmable setback thermostat

Request an On-Site Sizing Visit

We'll measure the space, check insulation and access, and give you a written quote that covers the unit, gas, vent, and electrical — all-in.

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How a Permitted Garage Heater Install Works

A garage heater is a gas appliance — installation has to be done right or the manufacturer warranty (and your home insurance) is void. Here's the proper sequence.

Heat-Load Sizing

We measure square footage, ceiling height, and insulation, then run a Manual J style calculation so the unit isn't oversized or undersized for your space.

Gas, Vent & Electrical

Our licensed Alberta gas fitters run new lines, set venting clearances, and connect the thermostat — pulling permits where the city requires them.

Commissioning & Walkthrough

We test combustion, set the thermostat to your usage pattern, and walk you through filter changes, seasonal shut-down, and warranty registration.

1 Day

Typical install time

5 Year

Reznor warranty

83%+

Thermal efficiency

600+

Garages heated

Garage Heater Installation FAQs

Common questions about garage heater installation in Calgary.

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Garage Heater Installation in Calgary

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Calgary Garage Heater Sizing Guide

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