The short version: The Sensi Touch ST75 is a mid-range touchscreen thermostat priced well below ecobee and Nest in Canada, while still covering a 5-inch color display, Alexa/Google/HomeKit/SmartThings support, and ENERGY STAR certification. It needs a C-wire, unlike the cheaper Sensi Lite and ST55, and it skips ecobee’s room-sensor ecosystem. For a straightforward forced-air Canadian home, it’s a reasonable value pick.

Note: Emerson’s residential thermostat business was acquired by Copeland, so Canadian retail listings now show both “Emerson Sensi” and “Copeland Sensi” branding for what is the same hardware. Don’t be thrown off if a Best Buy or Home Depot listing says Copeland instead of Emerson.

Who It’s For

The Sensi Touch fits:
– Forced-air Canadian homes with single or dual-stage gas, electric, or heat pump systems
– Buyers who want a touchscreen without paying ecobee/Nest prices
– Alexa or Google Home households, and Apple Home users, since the ST75 supports HomeKit
– Homes that already have a C-wire, or are willing to run one

It’s not the pick for electric baseboard heating (Mysa and Sinopé cover that; see Best Smart Thermostats for Electric Baseboard Heating in Canada), for buyers who want room-by-room sensors (ecobee, a Canadian company, leads there), or for anyone avoiding a C-wire install — look at the Sensi Lite or ST55 instead.

Design & Build

The Sensi Touch uses a 5-inch color touchscreen, larger than Honeywell’s T9/T10 Pro displays and comparable to ecobee’s. The housing is a plain white square, less visually distinctive than ecobee’s rounded design or Nest’s glass dial, but it sits flush and unobtrusive on the wall. Reviewers generally describe the build as solid rather than premium.

Setup & Compatibility

C-wire required. This is the ST75’s main limitation relative to the Sensi Lite and ST55: it needs continuous power, so a C-wire (or a compatible adapter, sold separately) is mandatory. Many older Canadian homes, especially pre-2000 builds, don’t have one at the furnace — check before buying.

Installation runs about 30 minutes for someone comfortable with basic wiring, with the Sensi app walking through wire labeling and terminal matching. It covers most single and dual-stage forced-air systems, including heat pumps, which matters given how many Canadian homes are adding heat pumps for winter heating. Run your system through Sensi’s compatibility checker first if you have anything non-standard, or see Smart Thermostat Compatibility: Will It Work With My System?

App & Ecosystem

The Sensi app covers standard 7-day scheduling, remote control, and basic energy-usage estimates. It’s less detailed than ecobee’s actual-consumption reporting, but reviewers consistently describe it as functional and easy for a first-time buyer.

Ecosystem support:
– Amazon Alexa — voice control
– Google Assistant — voice control
– Apple HomeKit — supported, a genuine differentiator at this price
– Samsung SmartThings — supported

HomeKit at this price point is unusual — Honeywell’s T9/T10 line skips it entirely — and it’s a real reason to pick the ST75 over an otherwise comparable Honeywell model if you’re on iPhone.

Touchscreen & Everyday Use

Independent coverage (Consumer Reports, Best Buy customer reviews, and dedicated thermostat review sites) is generally positive: reviewers describe the ST75 as easy to install and reliable day-to-day, with the touchscreen a clear step up from Sensi’s non-touch models. The most common complaint isn’t the screen — it’s buyers not realizing the C-wire requirement before purchase, which is worth double-checking against your own furnace wiring first.

Price & Value

Item Price (CAD)
Sensi Touch ST75 ~$150-234
ecobee Enhanced (for comparison) ~$188-249
Nest Thermostat (2020) (for comparison) ~$180-210

The ST75 typically runs slightly below ecobee’s Enhanced and roughly in line with the entry-level Nest, with Best Buy, Home Depot, Lowe’s, and Amazon.ca all carrying it and running periodic sales. Prices shift with retailer promotions, so check current listings before assuming a figure.

ENERGY STAR and rebates: The Sensi Touch is ENERGY STAR certified, the baseline most provincial and utility rebate programs require. Certification alone doesn’t guarantee a specific rebate — eligibility varies by province and sometimes by exact model number. Check Smart Thermostat Rebates in Canada by Province before assuming a rebate applies.

Pros & Cons

Pros:
– 5-inch color touchscreen at a below-ecobee/Nest price
– Apple HomeKit support, rare in this price tier
– ENERGY STAR certified, relevant for Canadian rebate eligibility
– Straightforward app-guided install
– Alexa, Google Assistant, and SmartThings support

Cons:
– C-wire required, a common gap in older Canadian homes
– No room-sensor ecosystem, unlike ecobee
– App lacks ecobee’s detailed energy reporting
– Emerson/Copeland brand transition means inconsistent retail listing names

Sensi Touch ST75 vs Sensi Lite vs Sensi Touch 2 vs Sensi ST55: features, price, and C-wire requirements compared

The Recommendation

Buy the Sensi Touch ST75 if your home has a C-wire (or you’re willing to install one), you want a touchscreen, and you want HomeKit/Alexa/Google support without ecobee or Nest pricing. If you don’t have a C-wire, look at the Sensi Lite or ST55. If room-by-room sensors matter, ecobee’s Enhanced — built by a Toronto company — is the stronger pick for Canadian buyers.

Frequently Asked Questions

Does the Sensi Touch ST75 need a C-wire?
Yes. Unlike the Sensi Lite and ST55, which run on batteries, the ST75 requires a C-wire or a compatible add-on adapter for continuous power.

Is Sensi Touch the same as Emerson Sensi or Copeland Sensi?
Yes. Emerson’s thermostat business was acquired by Copeland, so the same hardware now appears under both names depending on the retailer and listing age.

Does the Sensi Touch work with Apple HomeKit?
Yes, one of the few thermostats under $250 CAD with native HomeKit support, alongside Alexa, Google Assistant, and SmartThings.

Is the Sensi Touch eligible for Canadian utility rebates?
It’s ENERGY STAR certified, which is the baseline requirement for most provincial and utility programs, but exact eligibility varies by province and sometimes by model number. Check Smart Thermostat Rebates in Canada by Province before buying with a rebate in mind.

How does the Sensi Touch compare to ecobee?
ecobee (a Canadian company) offers better app energy reporting and a room-sensor ecosystem the Sensi Touch lacks. The Sensi Touch is generally cheaper and still covers touchscreen control and the major voice assistants.

Where can I buy the Sensi Touch ST75 in Canada?
Best Buy, Home Depot, Lowe’s, and Amazon.ca all carry it, with pricing that varies by retailer and ongoing promotions.