EMERSON 70 Series 1F75C-11PR Thermostat | Montreal, Laval, Longueuil, South Shore & North Shore
If you turn the heat down at night and forget to turn it back up in the morning, this thermostat does it for you, on a 7-day or 5-1-1 schedule with 4 periods a day.
Quick facts
Your gas, oil or electric furnace works fine, and so does the central air, but the old hallway thermostat only knows one temperature. The 1F75C-11PR (EMERSON’s White-Rodgers line) gives that system a schedule without changing any equipment. It runs on batteries or on a C wire, depending on what your wiring offers.
A schedule that follows your week
- Your choice of programming: 7-day or 5-1-1 (the default), with 4 periods per day; it can also stay in non-programmable mode.
- 1 heat, 1 cool: on a millivolt or 24 V system.
- Two power options: 2 AA batteries, or hardwired at 20 to 30 VAC with a C wire.
- Easy to read: large backlit display, with continuous backlight as an option with a C wire.
- Small extras: filter change reminder and built-in level.
- Setpoint range: 7 to 37 °C (45 to 99 °F).
Which systems does it run?
It controls a conventional gas, oil or electric system: heat only, cool only or both. A central heat pump with no backup heat (1 heat, 1 cool) also suits it. It is not for dual fuel, which needs a backup stage, or for baseboards, convectors, fan-forced heaters, electric floor heating or wall or ducted heat pumps. Its spec sheet does not name hot water or steam systems.
How it compares
Its twin, the EMERSON 70 Series 1F75C-11NP, is the same thermostat without a schedule: same size, same terminals, same power options. The EMERSON 80 Series 1F83C-11PR has the same programming; its sheet lists a 4.5 sq. in. high-contrast backlit display, keypad lock, setpoint limits and a lower load rating: 1.0 A per terminal and 1.5 A total, versus 1.5 A and 2.5 A on the 1F75C-11PR. In its 2025 cross-reference table, the brand lists the 1F75C-11PR to replace the EMERSON Classic 70 Series 1F78-151.
Installation by AirGreen
At the free in-home estimate, we check whether your thermostat cable has a C wire: if it does, the thermostat can be hardwired, with continuous display backlight as an option; if not, it runs on its 2 AA batteries. We set it up for your furnace or your heat pump without backup, enter your schedule with you and, if marks remain on the wall, fit the optional F61-2663 wall plate.
Manufacturer document: 1F75C-11PR installation instructions (37-7841). Sold and installed by AirGreen. We serve Montréal, Laval, Longueuil, the North Shore and the South Shore.
Key facts: EMERSON 70 Series 1F75C-11PR
Four things to know, then its ID card in twelve answers. “—” means the manufacturer does not publish it.
Is the EMERSON 70 Series 1F75C-11PR compatible with your heating?
Two steps, thirty seconds. The verdict takes your system and your wiring into account.
Full compatibility table
The terminals behind the thermostat
Tap an element to see what it does. A working diagram, not a substitute for the manufacturer’s installation guide.
Try the EMERSON 70 Series 1F75C-11PR before you buy
Raise the setpoint, change the mode: see how it responds.
How much good programming can save you
Set up your typical week. The math follows the rule published by Natural Resources Canada.
Winter, Rate Flex D and rebates: what this thermostat changes
With Hydro-Québec’s Rate Flex D, electricity costs less most of the winter and more during a few peak hours. A programmable thermostat does the work for you.
The EMERSON 70 Series 1F75C-11PR or its closest sibling?
The most useful comparison: the model right next to it in our catalogue.
The right thermostat in three questions
If this model is not the right one for you, the page says so and shows you which one is.
Products that go with the EMERSON 70 Series 1F75C-11PR
Parts named in its spec sheet that we sell and install.
Installed and set up by our technicians, in five steps
What we do at your place, in order. The on-site estimate is free.
- 01InspectionEquipment, stages to control and existing wiring.
- 02C wireCommon wire added if the model needs it and it is missing.
- 03MountingWall base, terminal wiring, cover plate if needed.
- 04SettingsEquipment type, stages, dual energy and accessories.
- 05Start-upConnection, app, schedule and tests with you.
EMERSON 70 Series 1F75C-11PR specifications
From the manufacturer’s sheet. Type a word: the list filters as you write.
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Frequently asked questions about the EMERSON 70 Series 1F75C-11PR
Short answers, no detours.
What does the EMERSON 70 Series 1F75C-11PR work with?
According to the manufacturer’s sheet: conventional gas, oil or electric (millivolt and 24 V): heat only, cool only or both; heat pump with no backup heat.
Does it need a C wire?
Per the spec sheet, it can run on batteries; a common wire is still recommended when available.
Can it control electric baseboards?
No. It is a low-voltage (24 V) thermostat. 120/240 V baseboards need a line-voltage electronic thermostat.
Can it be controlled remotely?
Not directly: it has no built-in Wi-Fi.
What is the warranty?
5 years, per the manufacturer’s information.
Does AirGreen install it?
Yes. We sell and install this product in Montréal, Laval, Longueuil, the South Shore and the North Shore. The on-site estimate is free.
No question matches. Call us at 514 316-2973.
Your thermostat, installed and set up by our technicians
We check your system and wiring, install the thermostat, connect it and program it with you. One visit, one installed price.