Furnace, AC and Heat Pump Repair in Calgary & Area, 24/7

Heating and cooling services we connect

Furnaces in Calgary work harder than almost anywhere else in the country. The heating season runs from the first October snow to the last April one, the cold snaps sit at −30 °C for days at a time, and a chinook can lift the outdoor temperature by twenty degrees in an afternoon and drop it again by nightfall — which is exactly the pattern that shakes loose a tired igniter or a cracked flame sensor. HVAC Lines exists for the moment that happens: one call, answered, and you are talking to an independent HVAC technician from our network who is available now, whether the house is in the northwest hills, the deep southeast, Airdrie or Cochrane.

The HVAC services in Calgary below cover the jobs a home here actually generates: furnace repair and furnace installation first, because gas heat is the whole city; air conditioning repair and installation, which has gone from a luxury to standard in the newer suburbs and takes a beating from hail every second summer; heat pumps, which here mean dual-fuel heating and cooling systems paired with the furnace rather than replacing it; thermostats, duct cleaning and indoor air quality, which in a dry winter and a smoky August is a bigger subject than people expect. Each page explains what goes wrong with these HVAC systems, what to check before anyone drives over, what the work typically costs across the Calgary area, and which certificate the work legally needs in Alberta. Every one of them ends the same way, with a phone number that is answered.

• AC repairAir conditioner repair: warm air, ice on the lines, an AC unit that hums but will not start, or a condenser that a hailstorm flattened.
• AC installationFirst-time central air for a house that never had it, or replacing a unit that hail or age has finished off.
• Furnace repairNo heat, short cycling, strange noises, or a furnace that lights and quits — furnace repair from the first October cold to the last April one.
• Furnace installationNew furnace installation: a furnace at the end of its life, a house that has outgrown its old one, or a dead unit in a cold snap that has to be replaced this week.
• Heat pumpHeat pump repair for a unit that has stopped or iced over, heat pump installation quotes, and honest advice on pairing one with a gas furnace here.
• ThermostatA thermostat that has died, drifted, or will not talk to a dual-fuel system — and the smart upgrades that suit a chinook climate.
• Duct cleaningDust puffing from the registers, a house full of drywall dust after a renovation, or ducts that have never been touched in twenty years.
• Air qualityDry winter air, dust that never settles, and a smoky August — keeping wildfire smoke out of the house in a summer like 2023 and moisture in it through a dry winter.

All heating and cooling services

What usually goes wrong

• No heat on the first cold night

  Before anything else: thermostat on heat and set above room temperature, the furnace switch on the wall or the unit itself, the breaker, and the filter. A furnace switched off by a hand looking for the light is genuinely common, and a furnace filter clogged after a summer of renovation dust will shut a heating system down on its limit switch. Past those four, the usual suspects in Calgary's high-efficiency units are the igniter, the flame sensor, the pressure switch and the condensate line — the last two because a −30 °C night can freeze an outside vent or a drain that ran fine in November. All of them are ordinary furnace repair calls.

• Short cycling after a chinook

  The furnace fires, runs a few minutes, quits, and tries again. A chinook makes this worse: the house warms fast, the furnace barely runs, the flame sensor gathers a film, and then the cold comes back overnight and the sensor cannot prove there is a flame. A blocked filter or a restricted vent does the same thing by overheating the unit. A blocked flue is the one version that is a safety problem rather than a comfort one.

• The air conditioning is running but the house will not cool

  In a Calgary summer the causes of a weak air conditioner are a failed capacitor, low refrigerant from a leak, a dirty air filter, or — after a storm — a condenser with its fins flattened by hail so it cannot shed heat. Refrigerant work needs a federal ODS certificate; topping up a leaking system without finding the leak is not legal in Alberta either — the province's Ozone-depleting Substances and Halocarbons Regulation prohibits recharging leaking equipment.

  Hail is the local twist. Fins can be combed straight if the damage is light; a coil that is punctured is an air conditioning replacement, and often an insurance conversation before it is a repair one. See the hail guide, and the AC repair page for what each fault costs.

• Water on the basement floor in July

  Almost always the condensate drain from the evaporator coil: a blocked line or a failed pump backing water into the pan above the furnace. Dry as Calgary is, an air conditioning system pulling moisture out of a house all afternoon still produces litres a day. Cheap to fix early, expensive to ignore — and one of the things a spring HVAC maintenance visit catches.

• A heat pump that goes quiet in deep cold

  Frost on the outdoor coil and a defrost cycle that blows cool air for a few minutes is normal. What is not normal is the furnace side of a dual-fuel system running flat out while the heat pump sits idle at −8 °C — that is a changeover point set wrong, and it shows up on the power and gas bills before it shows up as discomfort. Cold-climate heat pumps keep useful output to about -15°C; below that, in this city, the gas furnace is supposed to be doing the work. The heat pump page covers installation, repair and the changeover setting.

• A new noise

  A bang on ignition is gas building before it lights — a same-day call. A high squeal is usually a blower bearing on its way out. A rumble after the burners shut off is combustion not finishing cleanly, and worth having looked at before the next cold snap rather than after.

What furnace and air conditioning repair costs in Calgary

We do not set prices and you do not pay us; the technician you are connected to quotes before touching anything. What we can give you is the published range for the Calgary area, so the number you hear on the call has some context. Most **furnace repairs** in Calgary land between $150 and $1,000, and where a job sits in that band depends on the part far more than the company. **Air conditioner repairs** follow the same logic — a capacitor is cheap, a compressor is not — and a **new furnace** or **heat pump installation** is its own table on its own page.

One fault ends the repair-versus-replace question on its own: a cracked heat exchanger. The furnace is red-tagged and shut off, and on a unit past fifteen winters the sensible money almost always goes to a **new furnace** — an **energy-efficient** condensing unit that pays part of itself back in gas.

Tonight, or tomorrow morning?

Evening and weekend rates in Calgary commonly run 25–100% above a weekday visit, so the honest question before dialling at 11 p.m. is whether this can hold until 8 a.m. In January the answer is often no; in a chinook week it is often yes.

Call now if you smell gas — from outside, and ATCO Gas first — if a carbon monoxide alarm has gone off, if a breaker trips a second time after you reset it once, or if there is soot or scorching anywhere on the unit. Those are not comfort problems and the first step for all of them is to get out of the house.

Call now as well if the indoor temperature is heading toward single digits, or if anyone at home is elderly, unwell or very young. Below about −20 °C outside, a Calgary house loses heat quickly and the pipes in the outside walls of an older bungalow become the real risk; a burst line costs far more than an after-hours visit.

Most other faults keep. A furnace that runs but rattles, an air conditioner that is weak rather than dead, a thermostat that is being odd — those are morning HVAC repairs, and a decent technician will tell you so on the phone rather than charge the premium. The cheapest repair of all is the annual maintenance visit in September, before the season starts.

Calgary by the numbers

The conditions a Calgary furnace and air conditioner actually work in, from published data. They are why the pages on this site read the way they do.

−7.6 °C

January daily mean temperature, 1991–2020 normals

−31.6 °C

The coldest night of a typical year (average annual extreme minimum)

−45.0 °C

Record low, 4 February 1893

16.9 °C

July daily mean — cooling season is short, and hot days come in bursts

139 cm

Snow in an average year; 445 mm of total precipitation

$2.8 B

Insured damage from the 5 August 2024 hailstorm, Insurance Bureau of Canada

512 h

Hours under wildfire smoke in 2023, by CBC's smoke tracker

1.48 M

People in the metropolitan area at the 2021 census; 1.31 M in the city

Normals are for the airport, which sits on the open north-east plateau; the river valleys can run colder on a still night, and the west side feels a chinook first. Sources are dated below.

Where we take calls, quadrant by quadrant, with sources

Why call hvaclines.ca

• Gas work needs a ticket, and so does refrigerant

  Every contractor in our network agrees in writing to hold the licences and insurance Alberta requires, including liability insurance and WCB-Alberta coverage: under Alberta's Skilled Trades and Apprenticeship Education Act, anything touching a furnace, a gas line or a gas water heater must be done by a certified gasfitter — Class B covers residential furnaces and Class A the larger equipment, and anyone opening a refrigerant circuit holds Environment Canada ODS certification. Ask for the certificate number before the panel comes off — a working technician has it on their phone and expects the question. Ask, too, whether parts and labour carry a warranty, because a control board that fails again in February is not a conversation you want to have from scratch.

• Answered at −30 °C, not just at noon

  Furnaces do not fail on the mild days. They fail on the first night the cold settles in over the city and the burner has to run for hours without a break — and that night the line is still answered, every night of the year, for furnace repair, air conditioning and heat pump faults alike. If nobody in the network can take the call at that moment, the assistant says so while you are still on the phone, so you can decide what to do next instead of waiting on a promise.

• The form is for jobs that can wait

  When the thermostat is reading 12 °C you should not be typing. Call. The online request is for the other kind of HVAC services — a spring HVAC maintenance visit, a new air conditioner before the July heat, a furnace installation for a heating system you know is on its last winter — and it ends in the same live connection to a technician, on a call we place to you.

• An Ontario company

  hvaclines.ca is run by PatchLead (1001689754 Ontario Inc.), which also operates 2hvac.ca and 2plumbers.ca. Your details go to the one technician you are connected to, and are never sold on to a list of buyers. The privacy policy and terms are published at real addresses on this site.

Whoever you end up hiring, look them up the way you would any Calgary trade: Google reviews with real detail in them, the Better Business Bureau file, and what the people on your street say. An HVAC company that has worked the older bungalows around Bowness and the new builds out past Airdrie will know the city's heating and cooling stock better than one that sends a truck from three provinces away.

Emergency guides

Plain steps for the first ten minutes: what to switch off, what you can safely check yourself, and why a gas smell is a call to ATCO Gas before it is a call to anyone else.

• No Heat in Calgary? Four Checks, Then One CallCheck four things in this order: the thermostat is on heat and set above the room temperature; the furnace switch (it looks like a light switch, near the furnace or at the top of the basement stairs) is on; the breaker has not tripped; and the filter is not choked.
• Smell Gas Near Your Furnace in Calgary? Get Out, Then Call ATCO GasGet everyone out of the house now — do not switch anything on or off, do not use a phone indoors, do not start a car in an attached garage.
• Air Conditioner Leaking Water in Calgary? Switch It Off, Then Read ThisSwitch the cooling off at the thermostat straight away and keep the water away from anything electrical.
• Furnace Starting and Stopping Every Few Minutes? The Calgary Version of Short CyclingA furnace that starts, runs for two to five minutes and shuts down — then does it again — is short cycling.

All emergency guides