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148 answers
How much does furnace repair cost in Toronto?
Most furnace repairs in Toronto cost $150–$800 once the $80–$150 diagnostic fee is folded in.
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How long does it take to install a new furnace?
A like-for-like furnace replacement takes 4 to 8 hours — one working day for a two-person crew.
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Why is my furnace leaking water?
A furnace leaking water is almost always a high-efficiency (condensing) furnace with a blocked, cracked or frozen condensate drain — the unit makes several litres of water a day and it has nowhere to go.
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Why is my furnace making a loud banging or squealing noise?
A boom at startup is delayed ignition from dirty burners; banging from the ducts is sheet metal expanding.
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What's included in a furnace tune-up in Ontario?
A real furnace tune-up in Ontario covers a heat exchanger inspection, burner and flame sensor cleaning, igniter resistance and flame-signal readings, manifold gas pressure set to the rating plate, temperature rise, blower and capacitor checks, a condensate trap flush, venting inspection, safety-control tests and a carbon monoxide reading.
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How long does a furnace last in Ontario?
A gas furnace in Ontario lasts 15 to 20 years.
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Why is my furnace not turning on?
The most common reasons a furnace will not turn on are a thermostat set wrong or dead, a tripped breaker, the furnace power switch flipped off, a blower door not fully closed, a clogged filter that tripped the high-limit, or a full condensate trap opening the float switch.
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Why does my furnace smell like gas?
A brief whiff of gas as the burners light is usually delayed ignition and needs a repair visit soon.
Read the answer →How do I reset my furnace?
To reset most furnaces, set the thermostat to Off, flip the power switch beside the furnace (or its breaker) off, wait 30 seconds, then turn the power and thermostat back on and give it up to five minutes to run through its start-up sequence.
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Why is my furnace fan running constantly?
The most common reason a furnace fan runs constantly is the thermostat fan switch set to On instead of Auto, which tells the blower to run around the clock.
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Why does my furnace click but not ignite?
A furnace that clicks but never lights is completing the electrical half of ignition and failing the gas half.
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What does a flashing furnace light mean?
A flashing light on your furnace is a diagnostic code, not a warning lamp.
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Why does my furnace pressure switch keep failing?
A furnace pressure switch that keeps tripping is usually doing its job.
Read the answer →How much does a furnace flame sensor cost?
A furnace flame sensor costs $150–$300 in the GTA, cleaned or replaced, and that figure normally includes the service call.
Read the answer →How much does a furnace blower motor cost?
A furnace blower motor costs $500–$1,500 installed in the GTA.
Read the answer →How much does a furnace igniter cost to replace?
Replacing a hot surface igniter costs $200–$450 in the GTA, part and labour, and that usually includes the service call.
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How much does a furnace control board cost?
A furnace control board costs $500–$1,200 installed in the GTA.
Read the answer →Can I replace my furnace in winter?
Yes.
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What should I do if my furnace vent is blocked by snow?
Turn the furnace off at its service switch, then clear snow and ice away from both plastic vent pipes by hand or with a soft broom until roughly a metre of open space surrounds each opening.
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Is a two-stage furnace worth it?
For most GTA homes a two-stage furnace is worth the extra money, though not for fuel savings — for comfort.
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Can a furnace be too big for my house?
Yes, and oversizing is the most common sizing error we find in GTA homes.
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Why is my house cold even with the furnace on?
Check it in three steps.
Read the answer →How do I know if my heat exchanger is cracked?
You cannot confirm a crack from outside the furnace, but several signs are worth acting on: a flame that flutters or changes colour the instant the blower starts, soot around the burners, a sharp smell during heating cycles, rust flakes in the cabinet, a rollout switch that keeps tripping, or a carbon monoxide alarm.
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Can I install a furnace myself in Ontario?
No.
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How much does boiler repair cost?
Most residential boiler repairs land between $150 and $800, on top of a $90–$150 diagnostic visit that gets credited toward the work.
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How long does a boiler last?
A cast-iron sectional boiler commonly runs 25 to 35 years, and a well-kept one can pass 40.
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Why is my boiler losing pressure?
A sealed hydronic system only loses pressure when water leaves it, or when the expansion tank stops doing its job.
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How much does it cost to run a gas furnace in Ontario?
A typical Ontario home spends around $1,800 a year on gas heat, but almost all of it lands between December and March, so no single monthly figure is useful.
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Is it cheaper to leave the heat on all day?
No.
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What temperature should I set my furnace to when away in winter?
Set it to 15–17°C for a trip of a few days, and no lower than about 12°C for a longer absence — never off.
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How long does an air conditioner last in Canada?
A central air conditioner in Canada lasts 12 to 15 years, and a well-maintained unit reaches 18–20.
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Is a ductless mini-split worth it in Toronto?
Yes, if your Toronto home has no ducts or has a room the ducts cannot reach: century homes on radiators, third-floor bedrooms in semis, basement apartments, additions and condos.
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Why is my house so humid even with the AC on?
An air conditioner that cools but leaves the house clammy is usually oversized: it drops the temperature in 8–10 minutes and shuts off before it has pulled much water from the air.
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Should I replace my furnace and AC at the same time?
Replace both if both are over 12 years old: bundling saves $1,000–$2,500 because labour, sheet metal, electrical and the permit overlap, and combined installs land at $9,500–$15,000 in the GTA.
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How long does air conditioner installation take?
A central AC replacement on existing ductwork takes 4 to 8 hours — one day for a two-person crew, with cooling running before they leave.
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How much does AC repair cost in the GTA?
Most AC repairs in the GTA cost $150–$800.
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Why is my AC not turning on?
When an AC will not turn on, the cause is usually electrical and usually cheap: a thermostat not calling for cooling, a tripped breaker or blown fuse in the outdoor disconnect, a failed capacitor or contactor, or a safety switch on the condensate drain.
Read the answer →Why is my AC leaking water inside the house?
An AC leaks water inside the house when condensate from the evaporator coil cannot reach the drain.
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Why is my air conditioner so loud?
An air conditioner gets loud for a reason you can usually name by the sound.
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Why does my AC smell musty when it turns on?
A musty smell when the AC turns on comes from mould or bacteria growing on the wet evaporator coil, in the condensate pan, or on a damp filter, and the blower pushes it through the ducts in the first minute of each cycle.
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How much does an AC refrigerant recharge cost?
An AC refrigerant recharge in the GTA costs $300–$800+ when done properly, because the price includes finding and repairing the leak, not just adding gas.
Read the answer →How much does an AC capacitor cost to replace?
Replacing an AC capacitor costs $150–$350 in the GTA, including the part, the labour and the trip.
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How much does an AC compressor cost to replace?
An AC compressor is the most expensive part in a central air conditioner, and replacing it sits well above the $150–$800 band that covers most AC repairs; the total is often close to the cost of a new unit at $3,500–$7,500 installed.
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How much does a ductless mini-split cost in Ontario?
A ductless mini-split in Ontario costs $4,000–$7,000 installed for a single-zone system, $7,500–$11,000 for two zones and $10,000–$16,000+ for three or four.
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How often should an air conditioner be serviced?
A central air conditioner should be serviced once a year, in spring before the first hot week.
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Can a heat pump cool my house in summer?
Yes.
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How cold is too cold to run the AC?
Most central air conditioners should not run when the outdoor temperature is below about 15°C.
Read the answer →Why is my AC tripping the breaker?
An AC trips the breaker when it pulls more current than the circuit allows.
Read the answer →How long should an AC run per cycle?
A correctly sized single-stage air conditioner runs 15 to 20 minutes per cycle on a warm day, two or three times an hour.
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Why is my second floor so hot in summer?
Your second floor is hot in summer because warm air rises and collects under a roof baking at 50°C or more, while a single air conditioner run by a main-floor thermostat shuts off before the bedrooms cool.
Read the answer →Do I need a permit to install an AC in Ontario?
For a like-for-like central AC replacement, many Ontario municipalities issue no building permit, but rules vary by town, so confirm with your building department.
Read the answer →Is it worth repairing a 10-year-old AC?
Usually yes, if the repair is small.
Read the answer →How much does AC maintenance cost?
A standalone air conditioner tune-up in the Burlington, Oakville and Hamilton area costs $120–$250 and takes 45 to 90 minutes.
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When is the best time to buy an air conditioner?
The best time to buy an air conditioner is in the shoulder seasons — mid-September to October, or March to mid-May — when installers have open calendars, you can compare two or three quotes calmly, and you are not deciding in a heat wave.
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At what temperature does a heat pump stop working?
A cold-climate heat pump keeps producing heat through any normal Burlington winter.
Read the answer →Why is my heat pump blowing cold air in heating mode?
Most of the time it is not cold air, it is heat pump air.
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Why is my heat pump icing up?
A light coat of frost on the outdoor coil in damp weather near freezing is normal; the defrost cycle clears it, usually within an hour or two.
Read the answer →How loud is a heat pump?
A modern variable-speed heat pump is typically rated somewhere around 50–65 dB(A) outdoors at full speed, and it is quieter at the part-load speeds it runs most of the time — roughly the level of a normal conversation or a dishwasher heard through a wall.
Read the answer →How long does a heat pump last?
An air-source heat pump in Ontario typically lasts 12 to 15 years, and a well-installed, well-maintained unit often reaches 15 to 20.
Read the answer →How much does heat pump maintenance cost?
A heat pump tune-up in the Burlington, Oakville and Hamilton area runs $120–$250 per visit.
Read the answer →Do I need a backup furnace with a heat pump?
Not necessarily.
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Can I keep my furnace and add a heat pump?
Yes.
Read the answer →How much electricity does a heat pump use?
A whole-home heat pump draws roughly 1 to 4 kilowatts while the compressor runs, and adds several hundred kilowatt-hours a month to a typical Burlington hydro bill through the heating season.
Read the answer →Will a heat pump lower my bills in Burlington?
For most Burlington homes it lowers total energy cost, but it does so by shifting spending from the Enbridge gas bill to the Burlington Hydro bill rather than by cutting either one alone.
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What size heat pump do I need?
Size comes from a CSA F280-12 heat loss and heat gain calculation done on your actual house, not from square footage or the size of the old air conditioner.
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How long does heat pump installation take?
A straight swap — a heat pump replacing an existing air conditioner on a working furnace — takes one day, usually six to nine hours on site.
Read the answer →Can a heat pump replace a boiler?
Yes, but not by connecting a heat pump to whatever radiators are already there.
Read the answer →Are ductless heat pumps good for heating?
Yes.
Read the answer →Should I turn off my heat pump in extreme cold?
No.
Read the answer →Why does my heat pump run constantly?
Long run times are normal.
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Should I rent or buy a water heater in Ontario?
Buy.
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How long does a water heater last in Ontario?
A conventional tank water heater in Ontario lasts 8 to 12 years; a tankless unit lasts 15 to 20.
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Why is my water heater not producing hot water?
On a gas tank, no hot water is usually a pilot that has gone out, a failed thermocouple ($150–$300 to replace) or a gas control valve ($400–$600).
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What size tankless water heater do I need?
Size a tankless water heater by flow at a GTA winter temperature rise.
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How much does it cost to replace a water heater in Ontario?
Replacing a tank water heater in Ontario costs $1,200–$2,500 installed; a tankless conversion runs $3,500–$6,500, with the most common 199,000 BTU gas swap landing at $4,200–$5,000.
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Is a tankless water heater worth it in Ontario?
A tankless water heater is worth it in Ontario if you will stay in the home 10+ years, run out of hot water with your tank, or want the floor space back: it lasts 15–20 years against 8–12 for a tank and saves $80–$200 a year in energy.
Read the answer →Why does my water heater pilot light keep going out?
A water heater pilot light that keeps going out is usually a worn thermocouple or thermopile that can no longer hold the gas valve open, a clogged flame-arrestor screen starving the burner of air, or a draft pulling the flame off the pilot.
Read the answer →Why is my water heater making a popping or rumbling noise?
A water heater that pops, rumbles or crackles almost always has a layer of mineral sediment on the tank bottom; water trapped under it flashes to steam and bangs its way out.
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Why is my water heater leaking?
Where the water shows up tells you why your water heater is leaking.
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How do I relight a water heater pilot light?
To relight a water heater pilot light, turn the gas control knob to Off and wait five minutes for any gas to clear.
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How much does an anode rod replacement cost?
An anode rod replacement is one of the cheaper water heater jobs: the rod itself is an inexpensive part, and the visit lands at the low end of the $150–$800 range for tank repairs, with the $90–$150 diagnostic folded in.
Read the answer →How long does water heater replacement take?
A like-for-like tank water heater replacement takes two to four hours, and you have hot water again the same afternoon.
Read the answer →What temperature should my water heater be set to?
Set a tank water heater to 60°C at the tank and deliver no more than 49°C at the taps through a mixing valve.
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Why does my hot water run out so fast?
Hot water that runs out fast on a tank that used to keep up points to a cracked dip tube sending cold water straight to the hot outlet, a bed of sediment displacing capacity, or a dead lower element on an electric tank.
Read the answer →Why does my hot water smell like rotten eggs?
Hot water that smells like rotten eggs almost always means hydrogen sulphide gas is forming inside the tank: harmless sulphate-reducing bacteria in the water feed on the magnesium anode rod and release the gas.
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Can a tankless water heater run a whole house?
Yes — a properly sized gas tankless water heater can run a whole house, including two showers at once, in a typical Burlington or Oakville home.
Read the answer →Why does my tankless water heater go hot, then cold?
A tankless water heater that goes hot, then cold, then hot again is usually a 'cold water sandwich': turn a tap off and back on within minutes and you get the hot water left in the pipe, then the cold slug that went through the unit as it re-ignited.
Read the answer →Does a tankless water heater need a bigger gas line?
Usually, yes.
Read the answer →Why is my electric water heater tripping the breaker?
An electric water heater that trips the breaker most often has a heating element whose metal sheath has cracked, letting water reach the live wire and short it to the tank.
Read the answer →Is a heat pump water heater worth it in Ontario?
A heat pump water heater is worth it in Ontario when it replaces an electric tank: in heat pump mode it uses about a third of the electricity for the same hot water, and on Ontario's ultra-low overnight rate it can heat when power is cheapest.
Read the answer →Why is my water heater taking so long to heat up?
A water heater taking longer than it used to heat up usually has sediment insulating the burner or burying the lower element, a broken dip tube mixing cold water in near the top, or a thermostat set too low.
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Do I need an expansion tank on my water heater?
You need an expansion tank if your home has a closed plumbing system — a check valve, backflow preventer or pressure-reducing valve on the water service that stops heated, expanding water from pushing back into the municipal main.
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How much does duct cleaning cost in the GTA?
Professional duct cleaning for a typical GTA house costs $300 to $700, depending on home size, number of vents, and system accessibility.
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How often should air ducts be cleaned?
Every 3 to 5 years is a reasonable interval for most GTA homes — duct cleaning is not an annual service, despite what telemarketers suggest.
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Do I need a humidifier in winter in Toronto?
Most Toronto homes with forced-air heating drop to 15–25% relative humidity in January — well below the healthy 30–40% winter range.
Read the answer →Why is my house so dusty?
A forced-air house gets dusty when the return side of the system pulls in dust faster than the filter can catch it.
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Does duct cleaning help with allergies?
Duct cleaning helps allergies when the ducts are genuinely contaminated: visible dust build-up, mould after a leak, pest debris or renovation dust.
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Why is my furnace humidifier not working?
Most of the time a furnace humidifier stops working because the water panel is crusted with minerals, the solenoid valve is not opening, or the bypass damper was left in the summer position.
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Do I need an HRV in Ontario?
If your house was built in the last decade, you likely have an HRV already — Ontario's Building Code requires mechanical ventilation in new houses, and since the 2017 SB-12 energy-efficiency update most builders meet it with an HRV.
Read the answer →Why is there condensation on my windows in winter?
Condensation forms on windows in winter when indoor air holds more moisture than the cold glass can keep as vapour, so it condenses on the coldest surface in the room.
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Do UV lights in HVAC systems actually work?
UV lights in HVAC systems work for one job: a UV-C lamp aimed at the evaporator coil and drain pan stops mould and biofilm from growing there, which prevents the musty smell and coil fouling of humid summers.
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Can a furnace filter be too thick or restrictive?
Yes.
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How do I improve airflow to one room?
Work from the room back to the furnace: open the register fully, find the balancing damper on that branch in the basement and open it, then check the run for crushed flex duct, a disconnected boot or too many elbows.
Read the answer →Why are my vents whistling?
Vents whistle when air is forced through an opening that is too small for it.
Read the answer →Should I close vents in unused rooms?
No — closing vents in unused rooms does not save energy in a forced-air system and often costs it.
Read the answer →How much does dryer vent cleaning cost?
Dryer vent cleaning typically costs $100–$200 when added to a duct cleaning visit.
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What should I do if my heat stops working at night in Toronto?
First check the simple causes: thermostat batteries and settings, the furnace power switch, the breaker, the filter, and snow over the exterior vent pipes.
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Does emergency HVAC service cost more than regular service?
Usually, yes.
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Can my furnace leak carbon monoxide?
Yes.
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Can I get same-day furnace repair in the GTA?
Yes.
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What counts as an HVAC emergency?
An HVAC emergency is anything that threatens safety, health, or your home: no heat in winter, any gas smell, suspected carbon monoxide, a major water leak from your system, or no cooling during a heat warning when vulnerable people are home.
Read the answer →What should I do if I smell gas in my house?
Leave the building immediately.
Read the answer →What should I do if my carbon monoxide alarm goes off?
If your carbon monoxide alarm goes off, get everyone — including pets — outside to fresh air first, then call 911 from outside.
Read the answer →How do I shut off the gas to my furnace?
There are two shut-offs.
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What should I do if my AC fails during a heat wave?
Deal with the house and the people in it first, then the equipment.
Read the answer →Is a cracked heat exchanger an emergency?
Yes, treat it as one.
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Can I run my furnace with a blocked exhaust?
No.
Read the answer →How do I keep pipes from freezing if my furnace fails?
Put heat and moving air where the plumbing actually runs, keep a thin trickle flowing at the most exposed tap, and open the cabinet doors under sinks on outside walls.
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Is it safe to run a space heater overnight?
A certified electric heater with tip-over and overheat shut-offs, plugged straight into a wall outlet with a metre of clear space around it, is reasonably safe to run overnight in an occupied room.
Read the answer →What should I do if my furnace was flooded?
Do not dry it out and restart it.
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Does home insurance cover a furnace breakdown?
Usually not.
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How do I choose a good HVAC contractor in the GTA?
Verify TSSA gas licensing and liability insurance, confirm they pull permits, and get itemized written quotes from two or three companies.
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Can I finance a new furnace or air conditioner in Ontario?
Yes.
Read the answer →Are HVAC maintenance plans worth it?
For most homeowners with equipment over 5 years old, yes.
Read the answer →Why are my heating bills so high this winter?
Beyond rate increases, the usual culprits are an aging or poorly maintained furnace losing efficiency, a clogged filter forcing longer run times, leaky ductwork dumping heated air into the basement, air leaks around doors and attic hatches, and thermostat habits like heating an empty house.
Read the answer →Why is one room in my house always cold?
A chronically cold room usually means weak airflow to that room: a closed or blocked damper, crushed or leaky duct run, or a register hidden under furniture.
Read the answer →How much does a heat pump cost in Ontario?
A cold-climate heat pump in Ontario typically costs $6,000–$16,000 installed before rebates, depending on system size, whether it's ducted or ductless, and whether it replaces or works alongside your furnace.
Read the answer →How much does an HVAC service call cost in the GTA?
An HVAC service call in the GTA typically costs $90–$150 for the diagnostic fee, which covers a technician coming out and finding the problem.
Read the answer →Are HVAC estimates and quotes free in the GTA?
Yes — quotes for a new furnace, air conditioner, or heat pump installation are almost always free in the GTA, including in-home assessments and itemized written pricing.
Read the answer →Does the furnace brand really matter?
Less than you'd think.
Read the answer →Should my HVAC technician be licensed and insured in Ontario?
Yes, absolutely.
Read the answer →How much does a furnace and AC combo cost?
Replacing a furnace and air conditioner together in the GTA typically runs $7,500–$11,500 installed, depending on efficiency tier and home size.
Read the answer →How much does a new boiler cost in Ontario?
A new boiler in Ontario has no single price.
Read the answer →How much does an HRV cost installed?
An HRV's installed price is set by how it is ducted, not by the unit's rated airflow.
Read the answer →How much does a whole-home humidifier cost?
A whole-home humidifier mounted on the furnace runs $500–$1,200 installed in most GTA homes.
Read the answer →How much does smart thermostat installation cost?
Smart thermostat installation is mostly labour, and the labour depends on your wiring.
Read the answer →How much does gas line installation cost?
Gas line pricing comes down to length, pipe size and how hard the route is to run, not a flat per-appliance rate.
Read the answer →How much does a garage heater cost installed?
Garage heater pricing depends on three things: the heater type — a gas unit heater versus a low-intensity infrared tube heater — whether gas and power already reach the garage, and how the exhaust gets out.
Read the answer →How much does new ductwork cost?
New ductwork is priced by how much sheet metal has to be fabricated and hung and by how hard the space is to work in, not by the size of the house.
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How much does a commercial rooftop unit cost?
A commercial rooftop unit is quoted per unit, and the equipment is often the smaller half of the number.
Read the answer →How much does HVAC cost for a new build?
HVAC for a new build prices in two halves.
Read the answer →How do HVAC contractors price a job?
Most Ontario HVAC contractors price repairs flat-rate — one number approved before the work starts, covering the part, the labour and the callback warranty — and price installations as a package built from equipment, crew hours, sheet metal, venting, permit and disposal.
Read the answer →How do I compare HVAC quotes?
Compare HVAC quotes by first making them describe the same job: same capacity, same efficiency ratings, same matched indoor and outdoor models.
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What is a labour warranty vs a parts warranty?
A parts warranty is the manufacturer's promise to supply a replacement component; a labour warranty is the contractor's promise to install it without billing you for the time.
Read the answer →What is the cheapest way to heat a house in Ontario?
For a house on the gas grid, the cheapest way to heat in Ontario is still a high-efficiency condensing gas furnace, because natural gas delivers more heat per dollar than electric resistance.
Read the answer →What is the most efficient heating system for Ontario?
The most efficient heating system for Ontario is a cold-climate air-source heat pump: it moves heat instead of burning fuel, so it delivers two to three units of heat for every unit of electricity through most of our winter.
Read the answer →How much does a furnace cost per month financed?
A financed furnace in the GTA usually lands between $60 and $150 a month.
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How much does HVAC cost for a 2,000 sq ft house?
For a 2,000 sq ft home in this region, a high-efficiency furnace replacement typically runs $4,500–$7,500 installed, a furnace and air conditioner together $7,500–$11,500, and a cold-climate heat pump $9,500–$15,000 before rebates.
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