Updated November 9, 2026. Sources: canada.ca, Natural Resources Canada, ceip.abmunis.ca, Environment and Climate Change Canada. The short answer Canada’s National
If you're in the market or looking for a high-efficiency furnace in Calgary, this guide will assist you in identifying key factors, steering clear of expensive errors, and grasping actual costs and financing opportunities such as CEIP and SHARP because we know it's not easy navigating without the info to make the right decisions. You'll also discover the brands that are frequently encountered by Calgarians, along with straightforward questions to pose before you commit to any agreement which will enable you with details and the oversights often missed by homeowners.
TLDR
Understanding High Efficiency Furnaces
AFUE is a quick way to read and check your furnace's effiiciency - basically the set of letters that mean the percent of heat in the fuel that becomes useable heat for the home versus being lost to the process of producing heat and loss in the system escaping from incomplete combustion etc.
Read More on Energy Start Furnace Key Product Criteria Guideline Here>>
Why do Calgary homeowners care so much about High Efficiency Furnaces?
Heating demand is big here, and Calgary is listed around 5000 heating degree days (HDD18) in climate zone 7A using National Building Code design data. That is a fancy way of saying we heat our homes a lot. In Canada, numerous newly installed gas furnaces are operating within the high efficiency range, with a typical minimum standard being 95 percent AFUE for the majority of new gas furnaces. This is because of the extreme cold weather and the usage of gas for heating.
Many references consider a gas furnace to be high efficiency if it achieves an AFUE of approximately 90 percent or greater. Call for a FREE Quote
How High Efficiency Furnaces Work
Most present-day condensing furnaces are considered high efficient. With the use of something called the "heat exchanger," extra heat fromt the exhaust is collected and transferred back into the system. Then the exhaust cools enough that water vapor turns into liquid. That liquid is the condensate that needs a proper drain. This is an important understanding of why installation is important. In some cases, this is missed the drain backs up and causes potential flooding of the heat exchanger and damage to the furnace.Because the exhaust is cooler, many condensing furnaces vent through plastic piping instead of an old-style metal chimney, and this can change what the installer needs to do in your home.
A credible contractor will obtain Gas Permits to ensure the safety and legal installation of gas appliances.
Key Features to Look for in a High Efficiency Furnace
ENERGY STAR certification
If you plan to use CEIP financing for a high-efficiency gas furnace, the program lists ENERGY STAR certification as a requirement. So even if you are not a label person, it can matter for funding.
A blower motor that does not waste electricity
CEIP also lists an ECM motor upgrade for furnaces and explains that efficient fan motors with variable speed control use significantly less electricity.
Two-stage or modulating heat
For Calgary winters, two-stage and modulating furnaces are often popular because they can avoid the loud on-off feeling of a basic system. A two-stage furnace can run at low heat most of the time and step up when it is truly cold.
Right sizing (do not let anyone guess)
Short cycling is when the furnace turns on and off too often. A major cause is oversizing, and one troubleshooting guide calls an oversized furnace the most common cause of short cycling. If you have added insulation or sealed leaks recently, the needed furnace size may be lower than it used to be.
A plan for venting and condensate
Moving to a 90+ AFUE furnace can mean venting changes and adding or improving a condensate drain. This is one reason quotes can differ a lot between homes.
High Efficiency Furnace Brands in Calgary
These brands come up often because local HVAC companies say they install, repair, or service them in the Calgary area. This does not mean all models are equal within a brand, it just shows what is common on trucks and in supply chains.
CEIP even builds paperwork requirements around contractor quotes, model numbers, and warranties, which is a hint that the program expects real variation by installer and project.
Maintenance Tips for High Efficiency Furnaces
The easiest, highest-impact habit is filter care. ENERGY STAR recommends checking your filter every month, changing it if it looks dirty, and changing it at least every 3 months.
Also, plan for a yearly professional inspection. Health Canada explicitly recommends having a professional inspect fuel-burning appliances at least once a year (or per manufacturer instructions) to help prevent carbon monoxide exposure.
In Calgary, the Calgary Fire Department says working CO alarms provide the only warning of dangerous CO gases and notes the furnace is the most common source of CO gas in homes. They also recommend at least one CO alarm on every level of the home, with the most important location near bedroomsCTA: If you're helping a parent or grandparent, check two things on the alberta.ca SHARP page before you assume SHARP fits: total household income of $75,000 or less, and at least 25% equity left in the home after the loan.
Government Rebates and Incentives for Energy-Efficient Heating
CEIP in Calgary
The City of Calgary describes CEIP as a financing program, with repayments through your property tax bill. Financing can cover up to 100 percent of project costs, to a maximum of $50,000, at a fixed rate locked when you sign, with terms up to 20 years. Calgary's program has no rebate: you repay everything you borrow. Residential intake is closed until Jan 26, 2027 (estimated).
CEIP’s upgrade list includes a high-efficiency gas furnace category and states eligibility requirements like ENERGY STAR certification, natural gas or propane fuel, and replacement of less-efficient primary heating equipment. The CEIP page also notes that thermostats and duct insulation can be eligible costs in that context.
CTA: If you want CEIP, do not start work early. One CEIP page warns projects started before approval are not eligible, and it also points you to the pre-qualification path.
SHARP for seniors in Alberta
The Government of Alberta's SHARP page (alberta.ca, checked October 2026) sets out the basics.
If you or your spouse is 65 or older, Alberta's Seniors Home Adaptation and Repair Program (SHARP) may help. It's a low-interest home equity loan from the Government of Alberta, from $500 to $40,000, with no monthly payments. You repay it when you sell or move out. The province lists furnace and hot water tank upgrades as examples, and it decides who qualifies.
Making the Right Choice for Your Home
If you want the best odds of comfort and lower bills in Calgary, focus on three things in this order: proper sizing, a clean install that handles venting and condensate correctly, and an efficient furnace with the features you actually want to live with. Oversizing can cause short cycling, and high-efficiency installs can involve venting and drainage details that should be planned, not improvised.
We Specialize in Senior Accessibility
Give us a call to find out more about how we help with age-in-place
See What Our Customers Have To Say...
"Terrence and James arrived promptly to replace our very old furnace. They were very knowledgeable about the product and installation process. They worked diligently and professionally and answered all of the questions we had. They left the furnace room as clean as they found. We highly recommend them. Thank you to both of you"
Jan Peterson
"I normally would hesitate to write a review but I thought I should for this company. Carla and her team are great to work with. I had a split ac installed on my apartment unit and no other company are willing to do the approval process and provide the detailed pricing and the exact specs. The service delivered is prompt and professional, with no hidden cost. I am glad that I've chosen Alberta Indoor Comfort. Thank you!"
May Ngu
"Alberta indoor Comfort replaced my old furnace several years ago. They were fast and efficient with a one day install. I decided to order my A/C from them because of their good services and products. Their quote was exactly what I paid. They were on time to install the unit. No mess left behind. I am very happy with their products and service. I will continue to use their services in the future. Very happy with their service and products. They always follow up on any work or installs they do."
Bev De Paoli
DID YOU KNOW ?
More studies show that cognitive function was shown to be up to 50% worse in environments with higher carbon dioxide concentration, which is a symptom of insufficient make up air.
Consult our Experts to enhance your home to a great learning environment.
Proudly Serving Greater Calgary, AB
Refer a friend
Know someone who needs us?
Send someone our way and we pay you for it. Cash out in seven to fourteen days — no points, no credit against a future job.
- $100your first system referral
- $150your second
- $200every one after that
- $25any install, service or repair
System referrals apply to a complete heating and cooling system purchase. Terms and conditions apply.
Wondering how your own home measures up? The Wellness by Home Readiness Check is free, takes three minutes, and returns a written profile across air, water, humidity, light and sound.
Read us first on Google. Add Alberta Indoor Comfort as a preferred source and our Calgary home-environment articles are more likely to appear in your Top Stories and AI Overviews.
Add albertaindoorcomfort.com as a preferred source on Google
