Furnace Installation and Replacement in Ottawa
Furnace installation in Ottawa: what to expect and what it costs
Installing or replacing a furnace is the biggest heating decision an Ottawa homeowner makes, and in this climate it is one you want done right. A new high-efficiency gas furnace is regulated work involving gas and electrical connections, so it must be done by a TSSA-registered company. There is no single price, the honest figure is the one a company gives you after seeing the home. Below is what drives the cost, how sizing and efficiency work, and how to compare bids on a like-for-like basis.
Ottawa Furnace Pros is an independent local guide. We are not a furnace installer and we do not install, replace, repair or service furnaces ourselves. We help Ottawa-area homeowners understand furnace installation, replacement, repair and maintenance, and connect with TSSA-registered, insured and vetted local companies for free, no-obligation quotes.
What an installation involves
- Sizing the furnace. Matching the heating capacity (in BTUs) to the size, layout, age and insulation of the home, so it is neither oversized nor undersized.
- Removal and fitting. Removing the old unit, fitting the new furnace, connecting the gas line (certified gas technician), the venting, and the electrical connection (licensed electrician).
- Permits and commissioning. Pulling the required permits, testing the system, confirming safe combustion and venting, and showing you how to run it.
- Cleanup and disposal. Tidying the site and disposing of the old unit.
What drives the price
- Capacity and efficiency. Larger and higher-AFUE furnaces cost more up front; a high-efficiency condensing furnace (95% AFUE or higher) is the usual choice in Ottawa's climate.
- Ductwork and venting. Changes to ductwork, or new venting for a condensing furnace, add cost.
- Gas and electrical work. A gas-line change or switchboard/electrical work adds cost.
- Home layout and access. A difficult basement, mechanical-room access or a complex install adds labour.
How to compare Ottawa companies
Get every bid in writing for the same scope: the furnace model, capacity and AFUE, the installation, the venting and electrical connection, permits, removal of the old unit, the timeline, and proof of current TSSA registration, gas-technician certification, insurance and WSIB coverage. If your current furnace might still be worth keeping, our furnace repair page covers the repair-versus-replace decision, and our furnace service page covers keeping a new one running well.
Compare vetted furnace companies near you
Tell us a little about your home, whether you need a new furnace, a replacement, a repair or a service, and we will help you compare TSSA-registered, insured Ottawa-area companies and request free quotes. There is no obligation, and reputable companies assess the home before giving a firm price.
This page is general information, not professional advice. Every home and furnace is different, and only a qualified, TSSA-registered company can confirm the right system, capacity, scope and price after assessing your home. Always verify a company's current TSSA registration, gas-technician certification, insurance and WSIB coverage before signing a contract. Gas and electrical work is regulated for safety; using a licensed company is the safe and legal choice.
Frequently asked questions
There is no single price: it depends on the size and efficiency (AFUE) of the furnace, the layout and age of your home, whether ductwork or venting needs changing, and any electrical or gas-line work required. We do not quote a figure. A TSSA-registered local company gives you an exact price after assessing the home. As a rough guide, a new high-efficiency gas furnace installed typically runs several thousand dollars, more for larger homes or complex installs. Ask what is included (the furnace, installation, venting, permits, and removal of the old unit) so you can compare like for like. This page is general information, not a quote.
A newer furnace with a one-off fault is usually worth repairing. An older unit (roughly 15 or more years) that needs a major repair, runs inefficiently, or breaks down repeatedly is often cheaper to replace with a high-efficiency model than to keep patching, especially given Ottawa winters where a mid-winter failure is a safety issue. A good company gives you the honest comparison rather than defaulting to the bigger sale. Always get the diagnosis and options in writing.
Yes. In Ontario, gas appliance work must be done by a TSSA-registered contractor using a certified gas technician (G1 or G2), and the electrical connection by a licensed electrician (ESA). Using an unregistered installer can void the manufacturer warranty, breach the law, and create serious safety and insurance problems with a gas appliance. Always verify the company holds current TSSA registration and gas-technician certification, carries insurance, and has WSIB coverage, before work begins. Get the model, capacity and scope in writing.
AFUE (Annual Fuel Utilization Efficiency) is the percentage of fuel a furnace turns into usable heat. A high-efficiency condensing furnace is typically 95% AFUE or higher, versus older units around 60-80%. A higher AFUE generally means lower gas bills for the same heat, but the real saving depends on your home insulation, how cold the winter is, and your gas rate. A good installer sizes the furnace correctly for your home, since an oversized or undersized unit wastes money and comfort either way.
Most furnaces benefit from a service once a year, ideally in autumn before the heating season, to clean or replace the filter, check the burners, heat exchanger and venting, and confirm safe, efficient operation. Annual maintenance keeps gas bills down, extends the life of the unit, protects the warranty (many require it), and catches faults like a cracked heat exchanger before they become a safety risk. A company can set up a simple maintenance schedule for your furnace.
No. Ottawa Furnace Pros is an independent local guide. We do not install, replace, repair or service furnaces ourselves and we do not employ technicians. We help Ottawa-area homeowners understand their options and connect with TSSA-registered, insured and vetted local companies for free, no-obligation quotes.
