The Smartest DIY Home Improvements

Aprilaire Communicating Thermostat
The Interface Of Choice For HVAC Automation. Always reports to a distribution panel which will always be connected to a network system controller. The 8870 is Directly compatible with any RS485 network.

Aprilaire 8400 Series Thermostats
The 8400 Series Thermostats are easy to program and use and offer a combination of simplicity, value, reliability, comfort and style. There’s no longer a reason to use a mechanical thermostat. Get all the benefits of bringing your heating and cooling system into the digital age.

Aprilaire Programmable Digital Thermostats

Aprilaire 3-wire to 4-wire Adapter
3-wire to 4-wire Adapter for Aprilaire Thermostats

Temperature and Humidity Sensors for Aprilaire Thermostats
Temperature/Humidity Sensor designed for Aprilaire Thermostats. Includes wall mount and flush mount Sensors.

Aprilaire Single-Stage 2-Zone Control Panel
The 6202 is for two zones and is designed to work with your single-stage heat/cool equipment (for example a furnace and an air conditioner).

Aprilaire Single-Stage 3-Zone Control Panel
The 6203 is for three zones and is designed to work with your single-stage heat/cool equipment (for example a furnace and an air conditioner).

Aprilaire Single-Stage Heat Pump w/Aux Heat, 2 or 3-Zone Control Panel
The 6303 was designed to work with your heat pump. It can handle two stages of heat (one stage compressor, one auxiliary heat) and one stage of cool. It will control 2 or 3 zones.

Aprilaire Single or Multi-Stage Heat/Cool or Heat Pump, 2, 3 or 4-Zone Control Panel - expandable to 12-Zones
Aprilaire Single or Multi-Stage Heat/Cool or Heat Pump, 2, 3 or 4-Zone, expandable to 12-Zones

Aprilaire Zone Control Expansion Panel ( for use with 6404 ) up to 12-Zones
The Aprilaire 6402 is a 2 zone expansion panel that can be used with the 6404 Zone Control Panel, allowing up to 12 zones to be controlled.

Aprilaire Thermostat Adapter Plate
Thermostat Adapter Plate