high efficiency furnace – Aire One East Heating & Cooling

Furnace Leaking Water? Causes and What to Do

Ben Amina — Thu, 08 Oct 2026 08:53:57 +0000

Aire One East Heating & Cooling Furnace Leaking Water?Causes and What to Do Most leaks come from the condensate drain or pump. Here is how to find the source, what you can safely check, and when to call 8 Common CausesSafe DIY ChecksDurham Region 2026 GUIDEAIRE ONE EASTDURHAM REGION ★ 4.8 Google (364)Carrier Factory Authorized24/7 Emergency ServiceFamily Owned Since 1991TSSA Licence #1219734Serving Durham Region Updated October 8, 2026 · Reviewed by Ben Amina, TSSA-certified gas technician, Licence #1219734 · Aire One East Heating & Cooling By Ben Amina, Owner and Manager · TSSA Licence #1219734Aire One East Heating & Cooling, 1910 Dundas St E #117, Whitby A furnace leaking water is almost always a high-efficiency furnace whose condensate system has stopped draining properly. These furnaces make water as part of normal operation, often several litres a day in a Durham winter, and a clogged drain line, a failed condensate pump, or a loose fitting sends it onto the floor instead of down the drain. This guide covers the eight most common causes, how to find where the water is coming from, what you can safely check yourself, and when to call a licensed technician. If the furnace has also stopped heating, see our furnace not working guide. Key takeaways High-efficiency furnaces produce water normally, so a leak usually means the condensate drain, trap, or pump is not doing its job. A clogged condensate line and a failed or unplugged condensate pump are the two most common causes. In a Durham cold snap, a condensate line running through a cold space can freeze and back up. Turn the furnace off at its power switch before you touch a wet area, because water and electrical parts do not mix. Water from inside the cabinet, rust, or a leak that keeps coming back needs a licensed technician. Short answer: a furnace leaking water is usually caused by a clogged condensate drain line, a failed or full condensate pump, or a loose drain fitting on a high-efficiency furnace. Other causes are a frozen drain line, a leaking humidifier, or an air conditioner coil pan above the furnace. Turn off the power at the furnace switch, soak up the water, and check the pump and drain line. If the leak continues, call a licensed technician. Aire One East offers 24/7 heating service across Durham Region. Call 905-576-7600. On this page Why is my furnace leaking water? 8 causes of a furnace leaking water Leak sources at a glance Quick checks you can do safely When a furnace leaking water needs a pro How to prevent furnace leaks Key terms in this article Frequently asked questions Why is my furnace leaking water? It depends on the type of furnace. A high-efficiency furnace, the kind with two white PVC pipes running outside, pulls so much heat from the exhaust that the water vapour in it condenses into liquid. That water, called condensate, flows through a small trap and a drain line to a floor drain, or into a condensate pump that pushes it to a drain. When any part of that path clogs, cracks, freezes, or fails, you end up with a furnace leaking water onto the floor. A standard-efficiency furnace does not make condensate, so if an older furnace is leaking, the water is more likely coming from a humidifier, the air conditioner coil above it, or venting problems. Finding which part is wet is the first step to the fix. 8 causes of a furnace leaking water 1. A clogged condensate drain line or trap Over time, the condensate line and trap collect sludge, scale, and sometimes algae. When they clog, the water backs up and spills out of the trap or the furnace cabinet. This is the most common reason for a furnace leaking water. A technician can flush the trap and line and confirm the water flows freely. Many furnaces also have a safety switch that shuts the burners off when the drain backs up, so a clog can also cause a no-heat call. 2. A failed, full, or unplugged condensate pump If your furnace is not next to a floor drain, a small condensate pump collects the water and pumps it away. When the pump motor fails, the float switch sticks, the outlet tube kinks, or the pump simply gets unplugged, the reservoir overflows onto the floor. Check that the pump is plugged in and that it hums and empties when the water rises. A pump that will not run leaves you with a furnace leaking water every cycle, so it needs to be replaced. A condensate pump that stops running overflows onto the floor. Check that it is plugged in and empties when the water rises. 3. A loose or cracked drain fitting The PVC drain fittings and the rubber or vinyl tubing on a high-efficiency furnace can work loose, crack, or lose their seal over the years. The result is a furnace leaking water from a joint, often right where the drain leaves the cabinet. Look for drips at each fitting with a flashlight. A cracked fitting or failed seal should be replaced, not taped. Drips at a PVC drain joint usually mean a loose fitting or a failed seal that should be replaced. 4. A frozen condensate line Some condensate lines run through an unheated garage, crawl space, or outside wall. In a Durham cold snap, the water in that section can freeze, block the line, and back up into the furnace. You may see a furnace leaking water on the coldest days, or the furnace may shut down. A technician can reroute or insulate the line, or add heat tape where it is needed. 5. Condensation from the vent pipe The PVC exhaust pipe on a high-efficiency furnace carries warm, moist air. If the pipe is not sloped back toward the furnace, or a joint is not sealed, condensation can run down the outside of the pipe or drip from a joint and look like a furnace […]

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Why Is My Furnace Blowing Cold Air?

Ben Amina — Thu, 01 Oct 2026 06:45:48 +0000

Aire One East Heating & Cooling Furnace Blowing Cold Air?9 Fixes to Try First Most causes are simple. Here is what you can safely check, and when to call a licensed gas technician 9 Common CausesSafe DIY ChecksDurham Region 2026 GUIDEAIRE ONE EASTDURHAM REGION ★ 4.8 Google (364)Carrier Factory Authorized24/7 Emergency ServiceFamily Owned Since 1991TSSA Licence #1219734Serving Durham Region Updated October 1, 2026 · Reviewed by Ben Amina, TSSA-certified gas technician, Licence #1219734 · Aire One East Heating & Cooling By Ben Amina, Owner and Manager · TSSA Licence #1219734Aire One East Heating & Cooling, 1910 Dundas St E #117, Whitby A furnace blowing cold air usually means the blower fan is running while the burners are not making heat, and in most Durham homes the cause is simple: a thermostat fan set to ON, a clogged filter, or a vent blocked by snow. This guide walks through the nine most common causes, the checks you can safely do yourself in a few minutes, and the signs that mean it is time for a licensed technician. If your home has no heat at all, see our furnace repair service. Key takeaways The most common reason for a furnace blowing cold air is the thermostat fan set to ON instead of AUTO. A dirty filter can overheat the furnace, trip the high-limit switch, and shut the burners off while the fan keeps blowing. On high-efficiency furnaces, snow or ice blocking the white PVC vent pipes outside is a very common Durham winter cause. You can safely check the thermostat, filter, power switch, and outdoor vents. Gas, ignition, and flame sensor work is for a licensed gas technician. If you smell gas or a CO alarm sounds, leave the house first and call for help from outside. Short answer: a furnace blowing cold air is most often caused by the thermostat fan set to ON, a clogged air filter tripping the high-limit switch, or a blocked intake or exhaust vent. Check those three first. If the air stays cold after that, the problem is likely ignition, the flame sensor, or the gas supply, which needs a licensed technician. Aire One East offers 24/7 heating service across Durham Region. Call 905-576-7600. On this page Why is my furnace blowing cold air? 9 causes of a furnace blowing cold air Quick checks you can do safely Causes at a glance When a furnace blowing cold air needs a pro How to prevent it this winter Key terms in this article Frequently asked questions Why is my furnace blowing cold air? A gas furnace makes heat in two parts. The burners light and warm a metal heat exchanger, and the blower fan pushes your household air across it and out through the vents. When you feel a furnace blowing cold air, the blower is running but the heat side is not doing its job. Sometimes that is normal and lasts only a moment. More often, a safety control has shut the burners off on purpose, because something such as a dirty filter, a blocked vent, or a weak flame told the furnace it was not safe to keep firing. The fix depends on which part stopped, so the causes below go from the quickest checks to the jobs for a professional. Most cold-air calls trace back to the thermostat, the filter, or the venting, so those are checked first. 9 causes of a furnace blowing cold air 1. The thermostat fan is set to ON This is the number one reason we see for a furnace blowing cold air. With the fan set to ON, the blower runs all the time, including the stretches between heating cycles when the burners are off, so you feel cool air from the vents. Switch the fan setting to AUTO, and the blower will only run while the furnace is actually heating. 2. The thermostat is on the wrong mode or has weak batteries Make sure the thermostat is set to HEAT, not COOL or OFF, and that the setpoint is a few degrees above the room temperature. A blank or flickering screen often means low batteries, which can stop the thermostat from calling for heat even though the fan still runs. Fresh batteries fix a furnace blowing cold air more often than you would think. 3. The furnace is still warming up When a heating cycle starts, the burners light first and the blower waits a short time before it turns on. On some furnaces you may feel a little cool air from the ducts for the first minute or so while the heat exchanger warms. That is normal. If the air never turns warm after a few minutes, keep reading. 4. A dirty filter is overheating the furnace A clogged filter chokes the airflow across the heat exchanger, so it runs too hot. The furnace protects itself by tripping the high-limit switch, which shuts off the burners while the blower keeps running to cool things down. The result is a furnace blowing cold air on and off. Check the filter, and if it is grey and packed with dust, replace it. Our furnace filter guide covers sizes and how often to change it. 5. Snow or ice is blocking the outdoor vent pipes High-efficiency furnaces vent through two white PVC pipes on the side of the house. After a Durham snowstorm or a hard freeze, snow, ice, or frost can block them. The furnace senses the blockage through its pressure switch and refuses to light, so the burners stay off. Gently clear snow and ice from around both pipes by hand, keep at least a foot of clearance below them, and give the furnace a few minutes to restart. 6. The condensate line is clogged or frozen High-efficiency furnaces also make water, which drains away through a small plastic line. If that line clogs or freezes, a safety switch stops the burners from firing, which can leave you with a furnace blowing cold air. Signs include […]

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How long does a furnace last in Ontario?

Ben Amina — Sat, 25 Jul 2026 15:53:54 +0000

Aire One East Heating & Cooling How Long Does a Furnace Last in Ontario? A realistic 15 to 20 year guide for Durham Region homeowners, updated 2026 15 to 20 YearsOntario Winter GuideMaintenance Tips Book a Furnace Assessment→ 2026 GUIDE AIRE ONE EAST ONTARIO ★ 4.8 Google RatingCarrier Factory Authorized24/7 Emergency ServiceFamily Owned Since 1991TSSA RegisteredLicence #1219734 By Ben Amina, Owner and Manager Aire One East Heating & Cooling, Whitby, Ontario How long does a furnace last in Ontario? Most residential gas furnaces are expected to serve for about 15 to 20 years, but the real result depends on installation quality, sizing, maintenance, filter care, airflow, and how hard the system works through winter. This guide explains what that range means, how to recognise an aging furnace, and what to do before a breakdown decides for you. Short answer: Plan on approximately 15 to 20 years for a well-maintained gas furnace in Ontario. Some systems need major repairs earlier, while a correctly sized, properly installed, well-maintained unit may run beyond 20 years. Age is a planning signal, not a guarantee. Once a furnace is around 15 years old, start comparing its condition, repair history, efficiency, and safety rather than waiting for the coldest week of the year. Aire One East serves homeowners across Durham Region, including Whitby, Oshawa, Ajax, Pickering, Courtice, Bowmanville, Port Perry, and Uxbridge. For a tune-up or an honest assessment, call 905-576-7600 or book a furnace service appointment. In this guide The average furnace lifespan in Ontario What affects how long a furnace lasts Signs your furnace is nearing the end How to extend furnace life When to plan a repair or replacement Ontario furnace safety and carbon monoxide Frequently asked questions How long does a furnace last in Ontario? The average lifespan A practical planning range for a residential gas furnace in Ontario is 15 to 20 years. Carrier Canada and Save on Energy both publish this range, while Carrier notes that annual maintenance and timely repairs can help a furnace last longer. The number is a useful benchmark, not a promise made for every brand, installation, or home. Furnace age What it usually means Smart homeowner action Under 10 years The system may still have substantial service life if it is operating safely and efficiently. Follow the manufacturer’s maintenance and filter schedule and record repairs. About 10 to 15 years Wear, airflow problems, or rising operating costs deserve closer attention. Ask for a professional inspection and start learning your replacement options. About 15 to 20 years The furnace is within the common planning window and a major repair may change the decision. Compare condition, repair history, comfort, efficiency, and replacement timing. Over 20 years The unit may continue running, but age-related repairs and efficiency concerns become more important. Arrange a licensed assessment before the next heating season and plan for replacement if needed. Ontario homes do not all put the same workload on a furnace. A system that heats a well-insulated, correctly sized home may operate differently from one that serves a drafty home with restricted airflow. A furnace that has reached 20 years is not automatically unsafe, and a younger furnace is not automatically problem-free. The condition of the equipment and the safety of the installation matter as much as the number on the nameplate. What affects how long a furnace lasts? Two furnaces of the same age can be in very different condition. The factors below explain why one reaches the top of the expected range while another needs major work earlier. 1. Correct sizing and installation An oversized furnace may turn on and off too quickly, a pattern called short cycling. That adds starts and stops, can affect comfort, and may increase wear. An undersized furnace may run for long periods and struggle to keep up. Save on Energy recommends a heat-loss calculation and a review of the home’s construction, layout, ductwork, and airflow when a replacement is being considered. 2. Annual maintenance and timely repairs Annual professional maintenance helps identify airflow, combustion, drainage, ignition, and other issues before they become a larger failure. It cannot guarantee a particular lifespan, but it gives a technician an opportunity to check the system and helps you make decisions with better information. Carrier also identifies regular maintenance and timely repairs as important lifespan factors. 3. Filter care and airflow A dirty filter can restrict airflow and make the furnace work harder. Check the filter every month during the heating season and replace it according to the manufacturer’s instructions, the filter type, and the conditions in your home. Homes with pets, renovations, allergies, or high dust levels may need more frequent attention. Save on Energy notes that some homeowners may need replacement around every three months or sooner in dusty conditions. 4. Ontario climate and operating hours A furnace that runs for long hours during a cold Ontario winter experiences more operating time than one in a milder climate. That does not create a fixed deduction from the lifespan, but it makes clean airflow, correct sizing, good insulation, and planned maintenance more valuable. Sealing drafts and addressing comfort problems can also reduce unnecessary strain on the system. 5. Ductwork, vents, and returns Blocked supply vents, covered return grilles, leaking ductwork, or an installation that does not match the home can affect airflow and comfort. Do not close a large number of vents to solve a room-by-room comfort problem without professional advice. The cause may be duct design, insulation, a filter, a blower issue, or sizing rather than a simple thermostat setting. A professional furnace inspection can identify airflow, maintenance, and wear issues before they become a larger winter problem. What are the signs that a furnace is nearing the end? Age alone does not tell you exactly when a furnace will fail. The following signs mean it is time to arrange an inspection and begin planning, especially when several appear together: Frequent service calls: repeated breakdowns may indicate that several components are reaching the end […]

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Should I repair or replace my furnace?

Ben Amina — Sat, 25 Jul 2026 15:08:05 +0000

Aire One East Heating & Cooling Should I Repair or Replace My Furnace? A Homeowner’s Decision Guide, Durham Region 2026 The 15-Year Rule Cost Comparison 7 Signs 2026 GUIDE AIRE ONE EAST DURHAM REGION ★ 4.8 Google (364) Carrier Factory Authorized 24/7 Emergency Service Family Owned Since 1991 Licence #1219734 Serving All of Durham Region By Ben Amina, Owner and Manager Aire One East Heating & Cooling, Whitby, Ontario The question “should I repair or replace my furnace?” comes down to three things: the age of the unit, the cost of the repair against a new furnace, and whether the fault is a safety issue. This guide gives Durham Region homeowners a clear way to decide, including the rule of thumb the trades actually use, an honest cost comparison, and the one exception that overrides everything else. For local service either way, see our furnace repair service. The short answer: repair the furnace if it is under about 15 years old, running efficiently, and the repair costs a small share of a new unit. Replace it if it is past 15 years, if repairs are stacking up toward the cost of a new furnace, or at any age if the heat exchanger is cracked, which is a carbon monoxide safety issue rather than a comfort one. Age plus repair cost decides most cases; safety overrides both. Aire One East is a Carrier Factory Authorized dealer serving Durham Region since 1991, with TSSA certified technicians, Licence #1219734, a 4.8 star rating across 364 Google reviews, and 24/7 service. For an honest diagnosis, call 905-576-7600 or book online. In this guide 7 signs it is time to replace When repair is the better choice Repair versus replacement cost The cracked heat exchanger exception Efficiency, heat pumps, and 2026 rebates How to decide Frequently asked questions Age plus repair cost decides most furnace cases; a cracked heat exchanger overrides both. 7 signs it is time to replace Be fair first: none of these alone forces a replacement, but the more that are true, the stronger the case. Lean toward a new furnace when you see several of these. Age past about 15 years, the point where efficiency drops and major parts start to fail. Repairs stacking up, with the running total approaching a meaningful share of a new unit. Rising heating bills from an older furnace below 90 percent efficiency. Uneven heating the system cannot correct, often a sizing or wear issue. Frequent short cycling that maintenance does not resolve. A yellow burner flame or soot, signs of combustion problems worth a prompt inspection. A cracked heat exchanger, the one sign that means replace regardless of age, for safety. When repair is the better choice Replacement is not always the answer, and a good contractor will tell you so. If your furnace is under 15 years old, running well, and the fault is a common wear part such as an igniter, flame sensor, or a single motor, a repair is almost always the better value. A one-off repair of a few hundred dollars on a furnace with years of life left is money well spent, not a reason to replace. Regular maintenance keeps a healthy furnace in the repair column longer. Our furnace repair in Oshawa and service across Durham cover exactly these fixes. Repair versus replacement cost The clearest way to decide is to compare the repair cost against a new furnace. These are typical Durham ranges, verified July 2026, and your quote depends on the specific fault and home. Option Typical Durham cost (CAD) Makes sense when Common repair (igniter, sensor, motor) $100 to $700 CAD Furnace under 15 years, otherwise healthy Major repair (control board, gas valve) $400 to $700 CAD Newer unit; weigh against age New furnace, installed $4,500 to $8,500 CAD Past 15 years, or repairs adding up Typical Durham ranges in Canadian dollars (CAD), verified July 2026, subject to change. A common rule of thumb: if a repair costs more than about half a new furnace and the unit is over 15 years old, replace it. The cracked heat exchanger exception One fault overrides age and cost. The heat exchanger is the metal wall that keeps combustion gases separate from the air you breathe, and a crack in it can let carbon monoxide into your home. That makes it a safety issue, not a comfort one, and it almost always means replacing the furnace rather than repairing it. Carbon monoxide is colourless and odourless, so detectors on every level are essential, and any headaches or nausea that ease when you leave the house should be treated seriously. Safety first, always. If you smell gas, leave the home and call your gas utility emergency line from outside. If a carbon monoxide alarm sounds, get everyone out and call 911. Never run a furnace you suspect has a cracked heat exchanger. Diagnosing and replacing it is licensed work, restricted to a TSSA certified technician in Ontario. For a no-heat emergency, see our emergency furnace repair service. Efficiency, heat pumps, and 2026 rebates If you are replacing anyway, it is worth asking whether a high-efficiency furnace, or a heat pump paired with a gas furnace, is the better long-term choice. Most Ontario incentives in 2026 favour heat pumps rather than straight furnace swaps, delivered through the Home Renovation Savings Program from Enbridge Gas and Save on Energy. The older Canada Greener Homes Grant closed to new applicants in February 2024, so do not count on it. A dual fuel system, a heat pump above the changeover point with a gas furnace below it, is worth discussing during a replacement, since you are already spending on equipment. [VERIFY REBATE: confirm current Home Renovation Savings measures and amounts at homerenovationsavings.ca on the day of publish. Do not publish a figure that has not been checked.] How to decide Under 15 years, small repair, no safety issue: repair, and keep up with maintenance. Over 15 years, or repairs approaching half a new […]

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Best HVAC contractor for furnace replacement in Whitby

Ben Amina — Sat, 25 Jul 2026 14:28:08 +0000

Aire One East Heating & Cooling Furnace Replacement in Whitby: Cost & When to Replace New Furnace Installation in Whitby 2026 Whitby, Ontario Real Costs Licensed Install 2026 GUIDE AIRE ONE EAST WHITBY, ONTARIO ★ 4.8 Google (364) Carrier Factory Authorized 24/7 Emergency Service Family Owned Since 1991 Licence #1219734 Whitby Head Office By Ben Amina, Owner and Manager Aire One East Heating & Cooling, Whitby, Ontario A furnace replacement in Whitby is a major decision, and the best HVAC contractor for the job is one that sizes the new furnace to your home, quotes it honestly in writing, and tells you plainly when a repair would still do. Aire One East is based in Whitby and has replaced furnaces across the town since 1991, from heritage homes downtown and in Brooklin to the newer north-end subdivisions. This page covers when replacement makes sense, what it costs, and what a proper install involves. To choose a contractor in general, see our guide to the best heating company in Whitby. The short answer: replace your furnace rather than repair it when it is past roughly 15 years old, when repairs are stacking up, or at any age if the heat exchanger is cracked, since that is a safety issue. A new high-efficiency furnace in Whitby typically costs between $4,500 and $8,500 CAD installed, with the final price driven by size, efficiency, venting, and ductwork. The most important part of the job is correct sizing, not the brand on the box. Aire One East is a Carrier Factory Authorized dealer with its head office in Whitby, family owned and serving the town since 1991, with TSSA certified technicians, Licence #1219734, a 4.8 star rating across 364 Google reviews, and financing available. For a written quote, call 905-576-7600 or request one online. On this page When to replace instead of repair Furnace replacement cost in Whitby What a proper replacement involves Efficiency, heat pumps, and 2026 rebates Choosing the right contractor for the job Aire One East in Whitby Frequently asked questions A correctly sized furnace matters more to comfort and efficiency than the brand on the box. When to replace instead of repair Being fair, replacement is not always the answer, and a good contractor will tell you when a repair still makes sense. As a rule of thumb, lean toward replacing your furnace when one or more of these is true. Age past about 15 years, the point where efficiency has dropped and major parts start to fail. Repairs are stacking up, and the running total is approaching a meaningful share of a new unit. A cracked heat exchanger, which is a carbon monoxide safety issue and almost always means replacement regardless of age. Rising bills from low efficiency, where an older furnace below 90 percent efficiency is costing you every winter. Uneven heating the system cannot fix, often a sign of an incorrectly sized or failing unit. If none of these apply and the unit is under 15 years old, a repair is usually the better value. Our furnace repair service covers that side. Furnace replacement cost in Whitby Furnace replacement is quote based, because size, efficiency, venting, and the condition of your ductwork all move the price. Treat these as typical Whitby ranges, verified July 2026, and expect a written quote after an in-home assessment. Furnace type Typical Whitby installed range (CAD) Best for Mid-efficiency replacement $4,500 to $6,000 CAD Straightforward like-for-like swap High-efficiency (96%+ AFUE) $5,500 to $8,500 CAD Lower bills, most Whitby homes Two-stage or variable-speed $6,500 to $9,500 CAD Even comfort, quieter operation Added venting or ductwork changes Extra $300 to $1,500 CAD Older homes, layout changes Typical Whitby ranges in Canadian dollars (CAD), verified July 2026, subject to change. Exact pricing requires an in-home assessment. Financing is available. What a proper replacement involves The difference between a good and a poor furnace replacement is mostly in the parts you do not see. A proper job in Whitby includes a heat loss calculation to size the new furnace to your actual home rather than to the old unit, correct venting, a check of the existing ductwork and return air, a new thermostat where needed, and safe removal and disposal of the old equipment. It ends with commissioning and a combustion safety check, and a permit where required. Sizing from the old furnace repeats old mistakes, so a real calculation is the honest way. Safety first, always. Furnace installation is gas and electrical work, legally restricted to certified technicians in Ontario. Never let anyone without a TSSA gas licence install or remove a furnace. If you smell gas, leave the home and call your gas utility emergency line from outside, and if a carbon monoxide alarm sounds, get everyone out and call 911. Efficiency, heat pumps, and 2026 rebates If you are replacing anyway, it is worth asking whether a high-efficiency furnace, or a heat pump paired with a gas furnace, is the better long-term choice. Most Ontario incentives in 2026 favour heat pumps rather than straight furnace swaps, delivered through the Home Renovation Savings Program from Enbridge Gas and Save on Energy. The older Canada Greener Homes Grant closed to new applicants in February 2024, so do not count on it. A dual fuel system, a heat pump above the changeover point with a gas furnace below it, is worth discussing for a Whitby home during a replacement, because you are already spending on equipment. [VERIFY REBATE: confirm current Home Renovation Savings measures and whether your furnace or heat pump choice qualifies at homerenovationsavings.ca on the day of publish. Do not publish a rebate figure that has not been checked.] Choosing the right contractor for the job The full checklist is in our Whitby heating company guide, so here is the short version for a replacement. Confirm the contractor is TSSA licensed and insured, does a heat loss calculation rather than sizing from the old unit, gives an all-in written quote covering equipment, install, permit, […]

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