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White rectangular thermostat, slim profile, backlit display with colour-coded keys, approximately 4.8 by 4.5 inches

Venstar

Venstar P374-1100 thermostat

SKU CH-26P2-PBN45 MPN P374-1100

A slimline, 1-day programmable thermostat with two-stage heating and cooling, auto changeover, backlit display and keypad lock

  • TypeProgrammable Thermostats
  • 1-day programmable with up to 4 time periods for custom comfort schedules
  • Auto changeover switches between heating and cooling automatically for hands-free operation
  • Supports 2-stage heat and 2-stage cool for gas/electric, heat pump, electric and hydronic systems
  • Backlit colour-coded keys and large display provide clear visibility in any lighting
  • Keypad lock and non-volatile memory protect settings from accidental changes or power loss

Slimline Programmable Thermostat

The Venstar P374-1100 is a slimline programmable thermostat designed for residential and light commercial HVAC systems. It supports multi-stage heating and cooling equipment including gas/electric, heat pump, electric and hydronic configurations. The unit replaces earlier Totaline models and provides a 1-day programmable schedule with up to four time periods per day.

Wiring and Installation Notes

Installation requires a common (C) wire connection as the thermostat is not suitable for 2-wire, heat-only applications. Terminals include G, Y1, Y2, W1/O/B, R, C, W2 and remote sensor connections RS+5, RSGND and RS1. Backlit colour-coded keys and legends simplify wiring verification during setup. Keypad lock and non-volatile memory preserve settings after power loss.

Compatibility Check Before Ordering

Verify your system provides a C wire and matches the supported 2-stage heat, 2-stage cool terminal arrangement. Confirm the wall opening accommodates the approximate 4.8 inch width by 4.5 inch height footprint. Ensure the application is not a 2-wire heat-only circuit, which this model does not support.

Highlights

  • 1-day programmable with up to 4 time periods for custom comfort schedules
  • Auto changeover switches between heating and cooling automatically for hands-free operation
  • Supports 2-stage heat and 2-stage cool for gas/electric, heat pump, electric and hydronic systems
  • Backlit colour-coded keys and large display provide clear visibility in any lighting
  • Keypad lock and non-volatile memory protect settings from accidental changes or power loss

Specifications

TypeProgrammable Thermostats

Questions about this item

How can I confirm the thermostat is controlling heating and cooling correctly after wiring?

After wiring, the LED indicator glows green during cooling and red during heating, and the backlit display shows the active mode and setpoint.

What accessories are included in the box and which optional sensors must be purchased separately?

The thermostat ships with the unit only; the ACC0400 outdoor sensor and ACC0414RF wireless sensor are optional accessories sold separately.

Should I choose this P374-1100 model or the earlier P374-1000 for a 7-day schedule?

This P374-1100 model offers 1-day programming with up to 4 periods; the P374-1000 it replaces provided a 7-day program.

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