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HVAC Contractor in Markham

From Unionville to Cornell, we install high-efficiency furnaces, tank and tankless water heaters, water softeners and air quality systems in Markham homes. Upfront installed prices and no rental contracts.

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  • 5.0★ from 55 Google reviews
  • Same-day installs often available
  • 10-day money-back guarantee
Main Street Unionville in Markham, Ontario
Photo: Can Pac Swire, CC BY-SA 2.0

Brands We Install

Markham's Trusted HVAC Experts

Many Markham homes still have the furnace and water heater the builder put in. When yours is due, we help you choose a replacement that suits your family and your home, install it properly and handle the warranty registration for you.

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Explore Our Product Categories

Discover the systems we install every week. Every price includes standard installation, so you can compare options that fit your home and budget.

Tank Water Heater Tankless Furnace Power Vent Two-Stage Furnace Water Softener Reverse Osmosis UV Water Sterilizer HEPA Air Filtration UV Air Purifier HRV Ventilator

Home Comfort Services in Markham

Water Heaters Markham

Water Heater Installation in Markham

Reliable hot water without renting. We install gas tank water heaters from Bradford White, John Wood, Rheem and Lennox, and haul the old tank away, often the same day you call.

Installed from $2,195
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Markham Tankless Water Heaters

Endless Hot Water on Demand in Markham

A Rinnai condensing tankless heater hangs on the wall, frees up floor space and heats water only when you need it. We size it to your fixtures so showers never run cold.

Installed from $5,495
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Furnace Services Markham

Furnace Installation in Markham

Two-storey Markham homes often have a warm upstairs and a cool main floor. A two-stage Lennox furnace runs longer on a gentle setting to even that out. Single-stage from $4,945, two-stage from $5,495 installed.

Installed from $4,945
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Water Treatment Markham

Water Softeners & Filtration in Markham

A softener helps a new water heater last longer and cuts scale on fixtures. The Excalibur Chlor-A-Soft is installed from $2,195 and is designed for municipal water like Markham's.

Installed from $1,345
Explore Water Treatment
Indoor Air Quality Markham

HRVs & Air Purification in Markham

Fresh, filtered air all year. Lifebreath HRVs, Lennox HEPA filtration and UV lights connect to your furnace ductwork and quietly clean the air in every room.

Installed from $795
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Markham Civic Centre, Ontario
Photo: Raysonho (public domain)
10 yearsinstalling across Southern Ontario
Local know-how

Replacing builder-grade equipment in Markham homes

Much of Markham was built in the 1980s, 1990s and 2000s, and a lot of that original builder-grade equipment is now reaching the end of its life. Gas water heaters typically last 10 to 15 years and furnaces around 15 to 20, so if you are in one of those homes, a replacement may be close.

Replacing before a breakdown means you pick the equipment and the date, rather than taking whatever is available on a cold night. Many Markham families use the change to move from a rented tank to one they own, or to add a water softener to protect the new heater.

  • Two-stage furnaces for two-storey homes with uneven heat
  • Tankless water heaters for busy family homes
  • Excalibur water softeners to protect new equipment
Get a free quote Call 905-418-2629
10-Day Money-Back Guarantee Not happy with your new equipment within 10 days of installation? Tell us and we'll make it right. See the guarantee Need More Flexibility? Replace a failed furnace or water heater now and spread the cost. Choose humm at checkout to pay monthly, subject to approval. Learn more
Same-Day Installs in Markham Book early and we can often install the same day. Our technicians remove your old unit and register your manufacturer's warranty for you. Check today's availability
Technician installing a new water heater

Our Go-To Guide for Home Comfort

View all guides
Water HeatersBuy vs Rent a Water Heater in Ontario: 15-Year Cost Comparison Renting a power vent water heater in Ontario costs more than $6,800 over 15 years at typical rates. Buying ... Read more Water HeatersWater Heater Replacement Cost in the GTA & Ontario (2026) Replacing a 40 to 60 gallon gas water heater costs $2,195 to $3,295 installed across the GTA and Southern O... Read more FurnacesLennox ML196 vs ML296: Single-Stage or Two-Stage Furnace? Both Lennox Merit furnaces are 96% AFUE. The ML296 adds two-stage heat and a variable-speed blower for $550... Read more Water HeatersPower Vent vs Chimney Vent: Which Water Heater Does Your Home Need? A chimney vent tank is the simplest swap if your chimney still works well. After a furnace upgrade, a power... Read more Water TreatmentSigns You Need a Water Softener Scale on fixtures, spotty dishes and stiff laundry are classic signs of hard water. Learn how to test your ... Read more FurnacesHow to Check Your HVAC Contractor Is TSSA-Registered in Ontario Before anyone works on your gas furnace or water heater, check the company on TSSA's public registry and as... Read more

Serving Homes Across Markham & Nearby Areas

From older bungalows to brand-new builds, we install furnaces, water heaters, water treatment and air quality systems in every part of Markham and across York Region. We also serve nearby Richmond Hill, Stouffville, Scarborough and North York.

Neighbourhoods we serve in Markham

  • Unionville
  • Markham Village
  • Cornell
  • Berczy Village
  • Cathedraltown
  • Angus Glen
  • Box Grove
  • Milliken Mills
  • Wismer
  • Greensborough
  • Cachet
  • Thornhill (Markham)
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Real Homeowners. Real Reviews.

Join 300+ happy homeowners across the GTA and Southern Ontario

5.0 out of 5 based on 55 Google reviews
S
Saad R.Google review
★★★★★

Great experience with Mr. Heating and Home. Clear and helpful communication throughout, talked me through options, cost/benefit and answered every question. Installation was on-time, clean and with licensed professionals. And the best part, beat Costco pricing and let me pay by Amex!

M
Marion H.Google review
★★★★★

We had pleasant experience with Mr. Heating and Home. They installed a heat pump, electrical furnace, thermostat and a new electrical panel. Everything went smooth. No complaints. They laid down a red carpet and were respectful, professional.

G
Garry T.Google review
★★★★★

I had an old air system taken out and a new heat pump put in. These guys did a great job and were quick installing the new heat pump. When they left everything was clean and tidy. I would recommend Mr.Heating and Home team to anyone looking to upgrade! Great team!

T
Tamkin N.Google review
★★★★★

Uthman was amazing! The process was so smooth and the installers were helpful and polite. They put down a carpet to make sure nothing was damaged and were very professional. I highly recommend them.

N
Nancy D.Google review
★★★★★

Installed a water heater and water softener. There was issue during installation with a blocked pipe from my old water heater. I initially was upset but they resolved everything and made sure I was happy in the end.

D
Debbie D.Google review
★★★★★

Awesome man helped me so much thankyou Mohammed. I got the whole house UV purification system, and a reverse osmosis system, so excited to not use plastic bottles anymore.

Markham Furnace & Water Heater FAQs

How long do furnaces and water heaters last in Markham homes?
Gas tank water heaters typically last 10 to 15 years and furnaces around 15 to 20. If your home still has the builder's original equipment, it is worth planning a replacement before it fails.
Can you install a furnace in Markham the same day?
Often, yes, when you call early and the equipment is in stock. Call 905-418-2629 and we'll check today's schedule for your street.
Should I add a water softener in Markham?
Many homeowners do. A softener reduces scale in your water heater, dishwasher and fixtures. Our Excalibur Chlor-A-Soft is installed from $2,195.
Do you register the manufacturer's warranty?
Yes. We register your new equipment with the manufacturer so you get the full warranty, and we give you a copy for your records.

Ready for a quote in Markham?

Tell us what you need and we'll follow up the same day. No pressure, no surprise fees.

  • Upfront installed pricing
  • Licensed, insured technicians
  • Same-day installs often available

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