Honeywell Q674B1018 , Inc. Thermostat Subbase, Cool-Off-Heat

SUBBASE WITH ISO FAN (T874A-D)

Honeywell t874a-d subbase with iso fan is the most common subbase used with honeywell wall mounted air conditioners. it contains an isoflow fan that draws wiring downwards from an outlet box. This subbase is compatible with the following models: Quietset Series - V40E100D Heat Pumps, V40L100D Heat Pumps, V50V100D Heat Pumps

This Residential Thermostat Subbase - T874A includes an insulation subbase with an integrated interference ring, a compact, quiet ISO-style fan (T874D), and a 6" x 9" ceiling recessed trim plate. With the model T874, Honeywell is advancing thermostat technology with a low power consumption system that delivers exceptional comfort and indoor air quality.

The Inc. Subbase with ISO Fan enables the QTH Series thermostat to sense when your HVAC equipment is on or off, for increased energy savings. This subbase can only be used with Multi-Stage Heat QH7300A or Cool QCR7100A thermostats, and must be used with HVAC equipment that is a specific make/model with a programmed "On" cycle. An example of such HVAC equipment would be a heat pump with a run/off timer wired directly to the outside unit of the heat pump.

The Quick-Cool/Heat subbase is used to convert an area thermostat from Heat Run (commonly called 2-Stage) to Cool-Off-Heat. This precision metal subbase is assembled with fan, motor, and low voltage wire harness attached. It fits into the wall plate of most thermostats so that the original control can be retained. It's simply wired in place of the existing thermostat. It fits all Honeywell and Trane zone mounted thermostat housings except models T818AB-D, T818AB-E, T818AH-AD,

THERMOSTAT SUBBASE WITH FAN

Attach a heating and cooling thermostat to the subbase that comes included with the kit. Then, screw your thermostat onto the subbase for an easy installation on your non-inverting gas valve.

When designing your heating and cooling system, the Subbase, Cool-Off-Heat is an essential component to consider. This product has been engineered to work with select Honeywell zoning systems, allowing you to adjust temperature and air conditions for different rooms in your home.