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HVAC Contractor in Oshawa

From the lakeshore to Windfields, we install furnaces, tank and tankless water heaters, water treatment and air quality systems in Oshawa 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
Photo: Mhsheikholeslami, CC BY-SA 4.0

Brands We Install

Oshawa's Trusted HVAC Experts

Oshawa has some of the oldest and some of the newest homes in Durham Region. We bring the same care to both: an honest recommendation, a fixed installed price and a clean, code-compliant installation.

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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 Oshawa

Water Heaters Oshawa

Water Heater Installation in Oshawa

In older Oshawa homes, we check the chimney before we swap your tank. If it's no longer suitable, a power-vent water heater vents through the wall instead. Tanks installed from $2,195.

Installed from $2,195
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Oshawa Tankless Water Heaters

Endless Hot Water on Demand in Oshawa

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 Oshawa

Furnace Installation in Oshawa

Swapping an older mid-efficiency furnace for a Lennox high-efficiency model can noticeably lower gas bills. Installed from $4,945, with sizing confirmed before install day.

Installed from $4,945
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Water Treatment Oshawa

Water Softeners & Filtration in Oshawa

Softeners, reverse osmosis drinking water and whole-home UV sterilizers, installed and set up for your water. Protect your new water heater and taste the difference.

Installed from $1,345
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Indoor Air Quality Oshawa

HRVs & Air Purification in Oshawa

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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Parkwood Estate in Oshawa, Ontario
Photo: Mhsheikholeslami, CC BY-SA 4.0
10 yearsinstalling across Southern Ontario
Local know-how

Oshawa's older core and growing north end

Many homes in central and south Oshawa were built before the 1960s. Older homes like these often have chimney-vented appliances, older gas piping and compact basements. We inspect venting and clearances before quoting, so there are no surprises on install day.

North Oshawa, around Windfields, Taunton and Kedron, is newer and still growing. There, homeowners usually want to replace builder-grade equipment with something more efficient, or add an HRV or filtration to a tightly built house.

  • Careful replacements in older homes near downtown
  • Power-vent and tankless options when a chimney is retired
  • Efficiency upgrades for newer north-end homes
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 Oshawa 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 Oshawa & Nearby Areas

From older bungalows to brand-new builds, we install furnaces, water heaters, water treatment and air quality systems in every part of Oshawa and across Durham Region. We also serve nearby Whitby, Clarington and Ajax.

Neighbourhoods we serve in Oshawa

  • Downtown Oshawa
  • Lakeview
  • McLaughlin
  • Centennial
  • Donevan
  • Eastdale
  • Samac
  • Northglen
  • Northwood
  • Windfields
  • Taunton
  • Kedron
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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.

Oshawa Furnace & Water Heater FAQs

Do you install in north Oshawa?
Yes. We install across Oshawa, from the lakeshore to Windfields and Kedron. Call 905-418-2629 to check same-day availability.
What's the difference between a chimney-vent and a power-vent water heater?
A chimney-vent heater relies on natural draft up the chimney. A power-vent heater uses a fan to push exhaust out through a side wall, which is useful when the chimney is no longer suitable. We'll recommend the right one after checking your venting.
How much does a new furnace cost in Oshawa?
Lennox high-efficiency gas furnaces are installed from $4,945 for single-stage and $5,495 for two-stage, including standard installation.
Do you remove the old equipment?
Yes. We disconnect and haul away the old furnace or water heater as part of the job.

Ready for a quote in Oshawa?

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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Call us at 905-418-2629 and a real person will help you choose the right system.

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