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What size furnace should I buy?

Square FootageFurnace BTU
1,000-1,200 sq. ft. Home40,000 - 60,000 BTU
1,200-1,500 sq. ft. Home60,000 BTU
1,500-1,800 sq. ft. Home60,000 - 80,000 BTU
1,800-2,500 sq. ft. Home80,000 - 100,000 BTU
2,500-3,500 sq. ft. Home100,000 to 120,000 BTU

Your Trusted HVAC Resource for Ontario 

Discover the Authentic HVAC Directory

Furnace Sizing Calculator







Welcome to FurnacePrices.com, a premier resource for homeowners in Ontario seeking reliable furnace purchasing information.

Welcome to FurnacePrices.comYour Trusted HVAC Resource for Ontario 

Welcome to FurnacePrices.com, a premier resource for homeowners in Ontario seeking reliable furnace purchasing information. With a foundation deeply rooted in the HVAC industry, our goal here is to provide not just another directory filled with paid listings but a comprehensive platform featuring genuine insights, comparisons, and expert advice. 
At the helm of FurnacePrices.com is our lead contributor, Hans Vaillancourt, a seasoned professional with over 25 years of experience in the field and on the tools in the HVAC sector.  
Hans’s extensive background in the residential field ensures that the information we share is not only accurate but also reflective of the real-world experiences and the challenges homeowners face when it comes to heating their homes. 
Buying a furnace can seem over whelming especially when everyone says their furnace is the best. This is why we created furnaceprices.com to help people just like you.
Feel free at any time to reach out to our “contact page” if you have any questions or concerns.  Our team is here to answer any questions you may have. 
Why Choose Us?

Why Choose Us?

Products

Explore HVAC Products by Category

Browse top-rated heating and cooling products from Ontario’s most trusted brands.
Gas Furnaces
High-efficiency models for Ontario winters
Lennox · Carrier · Trane
Air Conditioners
Central AC units for every home size
Daikin · York · Goodman

⭐ Preferred HVAC Companies

Highly recommended by homeowners and businesses alike. These companies are known for reliability and fair pricing.
Canadian Heating and Air Conditioning Inc. logo

Canadian Heating and Air Conditioning Inc.

4.6/5
🏆 20 Years of operation

Share Canadian Heating and Air Conditioning Inc.

Hamilton Heating and Cooling logo

Hamilton Heating and Cooling

5/5
🏆 25+ Years of operation

Share Hamilton Heating and Cooling

Locations

Find Contractors in Your City 

Verified, licensed HVAC contractors across Ontario’s most popular cities.
🏙️
Hamilton
Hamilton-Wentworth Region
40+
Contractors
40+
Avg Rating
🌊
Burlington
Halton Region
28+
Contractors
4.7★
Avg Rating
🏘️
Cambridge
Waterloo Region
22+
Contractors
4.6★
Avg Rating
🔧
Kitchener
Waterloo Region
35+
Contractors
4.8★
Avg Rating
🌿
Milton
Halton Region
18+
Contractors
4.7★
Avg Rating
🏡
Oakville
Halton Region
30+
Contractors
4.9★
Avg Rating
🌾
Brantford
Brant County
20+
Contractors
4.6★
Avg Rating
Tools

All HVAC Calculators

Free online calculators to help you size, budget, and plan your HVAC system with confidence.
01 · FURNACE
💰
Cost Calculator
Estimate the full installed cost of a new furnace in Canada based on efficiency, home size, and province.
02 · FURNACE
📐
Size & BTU Calculator
Estimate total furnace purchase + installation cost
03 · FURNACE
🎯
Recommendation Quiz
Answer a few questions and get a personalized recommendation: entry-level, mid-range, or high-efficiency.
05 · FURNACE
📈
Savings Calculator
See how much you could save per year by replacing your old furnace with a modern high-efficiency model.
04 · FURNACE
⚡
Operating Cost Calculator
Calculate what your furnace costs to run each month and annually based on AFUE rating and local gas rates.
06 · FURNACE
🔧
Repair or Replace Quiz
Should you repair or replace your furnace? Answer a few questions and get a scored recommendation with reasoning.
07 · FURNACE
🩺
Troubleshooting Wizard
Furnace not working? Describe your symptoms and get a diagnosis — before calling a technician.
01 · AC
💰
AC Cost Calculator
Estimate the full installed cost of a new air conditioner in Canada — equipment, labour, permits, and disposal — based on home size and province.
02 · AC
📐
AC Size & Tonnage
Find the correct AC tonnage for your home. Avoid oversizing or undersizing — both waste energy and reduce comfort.
03 · AC
🎯
AC Recommendation Wizard
Answer a few questions and get a personalized AC system recommendation — central AC, ductless mini-split, heat pump, or window unit.
04 · AC
🔧
AC Repair Cost Calculator
Describe your AC problem and get an instant estimate of what the repair should cost — so you’re never overcharged by a technician.
05 · AC
🩺
AC Troubleshooting Wizard
AC not cooling? Use our step-by-step wizard to diagnose the problem and get recommended next steps — before calling a technician.
06 · AC
⚡
AC Operating Cost
Calculate what your AC unit costs to run each month and annually — based on SEER rating, usage hours, and your provincial electricity rates.
07 · AC
📈
AC Savings Calculator
See exactly how much you could save per year by replacing your old air conditioner with a modern high-efficiency SEER2-rated model.
Why Us

Why Choose FurnacePrices.com?

🔍
An Authentic HVAC Perspective
Real reviews and insights from industry professionals with hands-on experience — not paid placements or sponsored content.
⚖️
A Level Playing Field for HVAC Businesses
Every contractor listed gets a fair chance based on quality and customer feedback, not who pays the most.
🏙️
Focus on Ontario Cities
Hyper-local HVAC directory covering Hamilton, Burlington, Cambridge, Kitchener, Milton, Oakville, and Brantford.
By addressing these crucial components, we help you navigate the often overwhelming process of selecting and purchasing a heating system for your home.
🍂 Summer Readiness Tip

Is Your AC Ready for Ontario’s Summer?

Get a free AC inspection quote before temperatures rise. Most contractors book up fast — don’t wait.
Simple Process

Get Your New HVAC System in 3 Easy Steps

No pressure, no confusion. We make it simple for Ontario homeowners to find, compare, and install the right system.
01
📋
Tell Us About Your Home
Fill out our quick quote form with your home size, city, and current system. Takes less than 2 minutes.
02
🔍
Tell Us About Your Home
Fill out our quick quote form with your home size, city, and current system. Takes less than 2 minutes.
03
✅
Book & Get Installed
Choose your contractor, confirm the job, and get your furnace or AC professionally installed.
Free · No obligation · Ontario homeowners only
Reviews

What Ontario Homeowners Say

We believe in the power of community feedback. Here’s what some of our satisfied users have to say.
★★★★★
“I was overwhelmed by the options when looking for a new furnace, but FurnacePrices.com made it easy to compare models and prices. I love the expert articles — they helped me understand what I was investing in!”
SJ
Sarah J.
Hamilton, ON
★★★★★
“Found a great contractor in Kitchener through this site. The reviews were honest and the contractor arrived on time, did excellent work, and the pricing was fair. Would definitely recommend!”
MT
Michael T.
Kitchener, ON
★★★★★
“The furnace sizing calculator was incredibly helpful! I had no idea what size I needed and the tool walked me through everything. Saved me from buying the wrong unit.”
PM
Priya M.
Burlington, ON

Testimonials

We believe in the power of community feedback. Here’s what some of our satisfied users have to say about their experiences using FurnacePrices.com:
“I was overwhelmed by the options available when looking for a new furnace, but FurnacePrices.com made it easy to compare models and prices. I love the expert articles— they helped me understand what I was investing in!”
Sarah J.
Hamilton, ON
“I appreciate that FurnacePrices.com isn’t just another random directory. The information is so comprehensive and trustworthy. Hans’s insights are gold!”
Tom R.
Burlington, ON
Company FAQ’s

We have answers to your FAQ about purchasing a furnace here at furnaceprices.com

Having furnace issues? This guide answers common furnace questions, including signs it needs replacement, rising energy bills, and unusual noises.
Company FAQ’s
Yes, consistently rising repair and maintenance costs are one of the clearest signs that your furnace may be on its last legs. If you’re frequently calling technicians for breakdowns or spending hundreds on fixes, your system may be working inefficiently — and those costs can quickly add up.
In many cases, if repairs start costing more than 50% of the price of a new unit, it’s smarter and more cost-effective to invest in a modern, energy-efficient furnace. A new furnace can help lower future maintenance bills and keep your space comfortable all season long. Top Furnace Brands for Your Home
Another key sign it’s time to consider replacing your furnace is when it struggles to keep your home comfortable and warm. If you’re noticing some rooms are freezing while others are too warm, or your furnace runs constantly yet still fails to bring your space up to a comfortable temperature, it’s a clear indicator something’s amiss.

This inconsistency can sometimes be due to issues with your ductwork, poor insulation, or a furnace that’s simply losing its ability to generate enough heat. However, if your furnace is getting old and struggling to keep up, replacement may be the best solution. Modern furnaces are designed to be more efficient and powerful, allowing them to warm your entire home evenly and effectively.
If you notice a sudden increase in your energy bills, your furnace might be the culprit. An aging or malfunctioning furnace has to work harder to keep your home warm, consuming more energy in the process and causing your utility bills to soar. High energy bills from your furnace can be a clear sign that it’s losing efficiency or nearing the end of its lifespan.
This rise in energy usage may be due to outdated technology, inefficiency, or components starting to fail, which all affect your furnace’s ability to perform. You can check this by looking at your furnace’s Annual Fuel Utilization Efficiency (AFUE) rating — a lower AFUE means it’s converting less of its fuel into useful heat.
If your current furnace has a low AFUE and you’re experiencing high energy bills, it’s worth considering replacement over repair. A new, energy-efficient furnace can help cut your utility costs and keep your home comfortable for years to come.
Your furnace typically runs quietly, so if you start hearing strange noises — like loud banging, rattling, or whining — it’s a clear sign something may be going wrong. If you’re wondering “why is my furnace making noise?”, these sounds often indicate loose or broken components that need attention immediately. They can be a sign of significant wear and a hint that your furnace may be nearing the end of its lifespan.
Similarly, if you notice unusual smells — whether it’s a burning odor, a gassy smell, or something akin to rotten eggs — you shouldn’t ignore them. A burning smell can point to dust buildup, worn-out parts, or faulty electrical components. A gassy smell may be a sign of a leak, which is a serious safety hazard and should be addressed immediately.
If these issues continue or become more frequent, or you start seeing high energy bills due to your furnace’s inefficiency, it may be time to consider a replacement. Persistent problems and high energy bills from your furnace are often a clear indicator it’s nearing the end of its service life and should be replaced to keep your home comfortable and safe.
The age of your furnace is a key factor to consider when deciding whether you should opt for furnace repair vs replacement. Most furnaces have a lifespan of about 15 to 20 years, depending on factors like maintenance practices, the type of furnace, and usage patterns. If your furnace is approaching or has exceeded this age range, the risk of failure increases, along with the likelihood of costly repairs.
Moreover, as furnaces age, they tend to lose efficiency, which can lead to high energy bills and uneven heating. If your furnace is nearing the end of its expected lifespan and you’re experiencing issues — whether it’s making strange noises, struggling to keep up, or causing your energy bills to rise — it might be time to consider a replacement.
If you’re constantly making frequent thermostat adjustments to keep your home comfortable, it’s a clear sign that something may be amiss with your furnace. An efficient furnace should maintain a steady, comfortable temperature without you having to repeatedly turn up or down the thermostat. If you find yourself continually dialing it up just to stay warm, it could be a strong indicator that your furnace’s heating capabilities are starting to fail.
Upgrading to a new furnace with advanced smart thermostat technology can be a game-changer for both your comfort and energy savings in the long run. Smart thermostats learn your schedule, adjust temperatures automatically, and help cut down on energy usage — all while keeping your home cozy and comfortable.

Get Started Today!

If you are ready to take the next step and explore your options for purchasing a furnace, visit our homepage to start comparing prices and reading expert articles tailored specifically for Ontario residents. Remember, the right information can make all the difference in your home heating experience.
Write Emailcontact@furnaceprices.com
Services AreaBrantford, Burlington, Cambridge, Hamilton, Kitchener, Milton And Oakville