Furnace and AC questions for Welland homeowners.
This page answers the furnace and AC questions Welland homeowners ask most: a furnace blowing cold air, an AC that runs but will not cool, repair cost, 2026 rebates, and repair-versus-replace.
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The same handful of questions come up most often from Welland homeowners. Here are the plain-language answers, the kind you deserve before any work starts. These are general guidance based on publicly available Ontario information; confirm specifics with a licensed HVAC contractor and check official program pages for current rebate details.
FAQ
Why is my furnace running but not blowing hot air?
Usually one of three things: a thermostat set to ON instead of AUTO so the fan runs without a heat call, a clogged filter that tripped the high-limit switch, or a furnace locked out after a failed ignition. Check the filter and fan setting first. If the burners still will not light, that is a service call because it involves the gas valve.
My AC runs but the house will not cool. What is wrong?
The two most common summer causes are choked airflow from a dirty filter or coil, and low refrigerant from a slow leak. A frozen coil will also stop the cooling while the unit looks fine. Shut it off, let any ice melt, change the filter, and if it still will not cool, book a diagnostic.
How much should furnace or AC repair cost in Welland?
No verified Niagara or Ontario figure for what this costs exists in any authoritative source, so this guide does not give one. Ask for a written, itemized quote from a licensed local contractor, and a second one itemized the same way, so the two can be compared line by line.
What HVAC rebates are available in Ontario in 2026?
The Ontario Home Renovation Savings Program (delivered by Save on Energy and Enbridge Gas) is active as of 2026 for qualifying heat-pump and efficiency upgrades. Rebate amounts and eligibility requirements change, so confirm current details on the official Home Renovation Savings program page before committing to any purchase. Do not rely on a verbal description from a contractor as the final word on rebate amounts.
Should I repair or replace my furnace?
A rough guide: if the repair cost is more than half the cost of a comparable new unit and the furnace is past fifteen years, replacement usually wins on economics. Under that threshold, a repair is often the better call. Ask any contractor to show you the repair-versus-replace math in writing before you decide, rather than defaulting to a sale.
How do I avoid getting overcharged on a furnace repair?
Ask for the diagnosis in plain terms and the part name before you approve anything, and get the repair price in writing. Be cautious if a cracked heat exchanger gets called the moment someone walks in, with no combustion test to back it up. A heat exchanger diagnosis requires a combustion analysis to be credible. A second opinion on any expensive diagnosis costs far less than a furnace you did not need.
Sources
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published here, deliberately
No verified Niagara or Ontario figure for what this costs exists in any authoritative source, so this guide does not give one.
24 sourced claims exist in this page's own fact pack, for other parts of this topic.