Two furnace replacement quotes can land on the kitchen table a thousand dollars apart and still describe what looks like the same job. Usually they are different jobs, because one quote covers the venting, the permit and the gas connection while the other quietly leaves them for later. The furnace itself is only part of what a homeowner pays for, and the rest is where the real differences hide. Knowing what a complete quote should list makes the comparison a lot less confusing, especially in October, when many Calgary households are collecting prices before the first real cold snap.
The Equipment Line Comes First
A good quote names the furnace by brand and full model number, rather than a line that says “96% furnace, 60,000 BTU.” The model number tells you whether the unit is single-stage, two-stage or modulating, and whether the blower is a basic PSC motor or a variable-speed ECM, which affects both comfort and running costs. It should also state the heating output and show how that size was chosen, ideally from a load calculation rather than from the rating plate on the old unit. If one contractor quotes a two-stage furnace with an ECM blower and another quotes a single-stage model, the price gap has an obvious explanation before anyone looks at labour.
When replacing a furnace in Calgary, it also helps to see whether the quote accounts for an existing air conditioner. The cooling coil usually sits on top of the furnace, and a new cabinet of a different width may need an adapter or a matched coil, so a quote that ignores the AC can grow once the old furnace is out. Asking the question up front costs nothing and avoids an awkward conversation on installation day.
Venting, Where the Surprises Usually Live
Most Calgary homes replacing an older mid-efficiency furnace move to a high-efficiency condensing unit, and that changes the venting completely. The old metal flue into the chimney gets replaced with PVC intake and exhaust pipes, typically run out through the rim joist, and those terminations have to clear the ground, the expected snow line, nearby windows and the gas meter’s regulator. A quote should say where the new vents will exit and how much pipe is involved, because a long or awkward run takes more time and material.
There is a second venting question that gets missed surprisingly often. When the furnace stops using the chimney, a gas water heater may be left venting alone into a flue sized for two appliances, which can cause poor draft and condensation inside the chimney. Many installers recommend a chimney liner in that situation, and a thorough quote either includes it or explains why it is not needed. If only one of your two quotes mentions the water heater, ask the other contractor about it directly.
Gas, Electrical and the Condensate Drain
The gas connection should be listed as its own item, including a new shutoff valve and sediment trap at the furnace, and any pipe resizing if the new unit’s input rating differs from the old one. The electrical side is usually simpler, although some older installs lack a proper service switch next to the furnace and need one added. A condensing furnace also produces water, so the quote should say where the condensate will drain, whether to a nearby floor drain or through a small condensate pump if the drain is across the basement. None of these items is expensive on its own, but together they explain a good share of the gap between a low quote and a complete one, and reading up on what a Calgary furnace replacement typically includes before the quotes arrive makes a missing line easier to spot.
Permit, Thermostat and Disposal
In Calgary, replacing a gas furnace requires a permit, and the installing contractor normally pulls it and arranges the inspection once the work is done. A quote should state plainly that the permit is included, because a job done without one can cause trouble later with insurance or when the house is sold. The thermostat deserves a line too, since a two-stage or modulating furnace may need a compatible thermostat, or an extra wire run, to use its lower firing stage properly. Removal and disposal of the old furnace should also be listed, rather than left as an unspoken assumption that turns into an extra charge on installation day.
Warranty Terms and Registration
Many manufacturers offer a 10-year parts warranty on new furnaces, but it is common for that term to depend on the unit being registered, often within about 60 days of installation. Left unregistered, the coverage can drop to a much shorter base term, and homeowners rarely find that out until a part fails. A useful quote says who handles the registration and gives the labour warranty in writing as a separate figure, since parts coverage and labour coverage are two different promises.
How to Compare Two Quotes Fairly
The simplest method is to lay both quotes side by side and build a short checklist from the items above: equipment and model number, sizing method, venting and any chimney liner, gas and electrical work, condensate drainage, permit, thermostat, disposal, and warranty terms. Anything one quote includes and the other does not becomes a question for the contractor, and the answers are often more revealing than the totals. Across the industry, a typical Calgary furnace replacement tends to fall somewhere in the $5,000 to $8,000 range installed, with high-efficiency, two-stage and modulating units toward the upper end. A quote well below that range is worth reading twice to see what was left out, and it is fair to ask whether the price could change once the old furnace is removed.
A Quote Is Also a Conversation
The contractor who takes the time to walk the basement, look at the chimney, check the ductwork and ask how the house heats in winter tends to write a more complete quote, simply because they have seen more of the job. That visit is also the best chance to raise what matters to you, such as noise or a cold upstairs bedroom. A slightly higher quote that answers those questions often costs less over the life of the furnace than a lower one that leaves them open. Gathering quotes in the fall, while there is time to compare them properly, keeps the decision in your hands rather than the weather’s.
Calgary Air Heating and Cooling Ltd Contact Information
Address
95 Beaconsfield Rise NW, Calgary, AB T3K 1X3
Phone
+1 (403) 720-0003
Hours of operation
7 a.m.–11 p.m. (including weekends)
Website
https://calgaryair.ca/furnace-replacement-calgary/
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