EMERSON Blue Series 2" 1F80-0261 Thermostat | Montreal, Laval, Longueuil, South Shore & North Shore
Weekdays the house empties early and Saturday looks nothing like Sunday: the 1F80-0261 keeps a schedule for each, on 2 AA batteries or hardwired.
Quick facts
From Monday to Friday your days look alike: out the door in the morning, home late in the afternoon. Saturday means the arena and errands; on Sunday, nobody goes anywhere. The Blue Series 2" 1F80-0261 (the White-Rodgers line from EMERSON) is built around that split, with one schedule for weekdays, one for Saturday and one for Sunday.
One schedule for the week, two for the weekend
- 5-1-1 programming: weekdays, Saturday and Sunday, each with 4 periods a day.
- Override or hold: a temporary override for an evening that runs late, or a setpoint hold when you leave for a few days.
- Program memory: your schedule stays in place through a power failure.
- Easy-to-read screen: 2 sq. in. blue backlit LCD with large characters.
- Short-cycle protection and Cool Savings: compressor short-cycle protection, and the Cool Savings feature for cooling peaks.
- Your choice of power: 2 AA batteries (included) or hardwired at 20 to 30 VAC.
Which systems it runs
The 1F80-0261 controls one heating stage and one cooling stage: a gas, oil or electric furnace, or a single-stage heat pump with no backup heat. On batteries it also handles millivolt systems. It is not meant for dual fuel, which needs a backup stage, or for baseboards, electric floor heating, fan-forced heaters or wall or ducted heat pumps. The instructions also rule out 3-wire zoned hydronic systems and anything above 30 VAC and 1.5 A.
How it compares
In its 2025 cross-reference table, the brand lists the EMERSON 80 Series 1F83C-11PR to replace the 1F80-0261. That model can run a 7-day or a 5-1-1 schedule (the default) or stay non-programmable, with a 4.5 sq. in. high-contrast screen, RC and RH terminals and setpoints up to 37 °C; its sheet also lists an optional F61-2663 wall plate to hide the marks left by the old thermostat. If every day of your week looks the same, the EMERSON Blue Series 2" 1F80-0224 repeats one 24-hour schedule daily, with the same size and the same screen.
Installation by AirGreen
With no C wire, the 1F80-0261 runs on its 2 AA batteries; if the common wire is there, we hardwire it. We set it up for your equipment, single-stage furnace or heat pump without backup, then enter your weekday, Saturday and Sunday times with you. It all starts with a free in-home estimate.
Manufacturer document: 1F80-0261 installation instructions (37-7009). Sold and installed by AirGreen. We serve Montréal, Laval, Longueuil, the North Shore and the South Shore.
Key facts: EMERSON Blue Series 2" 1F80-0261
Four things to know, then its ID card in twelve answers. “—” means the manufacturer does not publish it.
Is the EMERSON Blue Series 2" 1F80-0261 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 Blue Series 2" 1F80-0261 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 Blue Series 2" 1F80-0261 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.
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 Blue Series 2" 1F80-0261 specifications
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Frequently asked questions about the EMERSON Blue Series 2" 1F80-0261
Short answers, no detours.
What does the EMERSON Blue Series 2" 1F80-0261 work with?
According to the manufacturer’s sheet: single-stage systems (gas, oil, electric, millivolt on batteries); single-stage 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.
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.