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Smart Thermostat Buying Guide for Ontario Homes

A smart thermostat is the cheapest rebate-eligible upgrade on Ontario's rebate program, and one of the few where the $100 comes back as an instant discount instead of a wait-for-the-mail rebate — if you apply before you buy, not after.

This guide covers the eligible models, real pricing, how the rebate actually pays out, and what to consider before picking a brand.

By Sam Menard · Updated August 2026 · 7 min read

The Real Choices, Straight Up

ecobee Smart Thermostat

Retail price: roughly $130-$280 depending on model (3 lite, Essential, Enhanced, Premium, or voice-enabled). Best for: homes with multiple rooms that run hot or cold unevenly.

ecobee's line includes optional room sensors that let the thermostat average temperature across rooms instead of just where the unit hangs on the wall — useful in older Ontario homes with uneven heating from radiators or forced-air runs that don't reach every room equally.

Google Nest (Learning Thermostat / Nest Thermostat / Thermostat E)

Retail price: roughly $130-$280 depending on model. Best for: homeowners who want the thermostat to build a schedule automatically rather than programming one by hand.

Nest's Learning Thermostat adjusts its own schedule based on your actual behavior over the first week or two, which suits people who won't sit down and program a weekly schedule manually. It integrates well if you're already in the Google ecosystem.

Sinopé and Mysa

Retail price: roughly $100-$200 depending on model (Sinopé Lite/Pro Lite/Pro, Mysa Smart Thermostat). Best for: homes with electric baseboard or in-floor heating, which most major-brand thermostats don't support well.

Both are Canadian-made and specifically built to handle line-voltage electric heating systems — common in Ontario condos, older electrically-heated homes, and additions with in-floor radiant heat. ecobee and Nest are designed primarily for central forced-air and heat pump systems, so if your home runs baseboard heaters, Sinopé or Mysa is usually the only real fit.

BrandRetail priceBest for
ecobee$130-$280Uneven room-to-room temperature, multi-zone homes
Google Nest$130-$280Auto-scheduling, Google ecosystem homes
Sinopé / Mysa$100-$200Electric baseboard or in-floor heating

No official pricing is posted on the HRSP program site — confirm current retail pricing at the retailer before you buy.

How the Ontario Rebate Applies

HRSP pays a flat $100 for any eligible model, and you have two ways to claim it:

Eligible brands include the ecobee Smart Thermostat line, Google Nest Learning Thermostat and Nest Thermostat/Thermostat E, Honeywell Home T9/T5 Gen2/X2S/X8S, Copeland Sensi Touch/Touch 2/Sensi/Sensi Lite, Mysa Smart Thermostat, and Sinopé Smart Thermostat Lite/Pro Lite/Pro.

The $100 rate is provincial, so it applies the same in Toronto, Ottawa, Hamilton, and every other Ontario city page.

Compare full feature specs across brands in our smart thermostat comparison before you decide.

What to Check Before You Buy

What to Ask Before You Buy

  1. "Is this exact model on the current HRSP eligible list?"
  2. "Does my heating system need a C-wire adapter for this thermostat?"
  3. "Should I apply for the instant rebate before I buy, or is mail-in easier for my situation?"
  4. "If I have electric baseboard heat, will this thermostat actually control it?"
A retailer that only stocks ecobee or Nest may not mention that neither works with baseboard heating. If your home runs electric baseboards, confirm compatibility before you buy — not after installation day.

The One Number That Matters

A smart thermostat with proper scheduling typically cuts heating and cooling costs by 8-12% in a well-used Ontario home. On a $200 unit, the $100 rebate cuts your net cost in half, and most homeowners recover the remaining $100 in energy savings within the first year.

Next step: Run your address through HomePowerRebate's assessment tool to confirm your rebate eligibility before you buy — apply for the instant discount if you haven't purchased yet.

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