Lennox 19L22 RETURN AIR SENSOR

RETURN AIR SENSOR

The RETURN AIR SENSOR allows for constant monitoring of air velocity and temperature in your system. It is designed to sense the return air temperature and adjust the output power accordingly, therefore integrating within most standard digital controls. This helps maintain the selected set point and also reduce unwanted delta T.

This innovative new sensor from Lennox is designed to help you get the most energy efficiency from your air conditioner. The RETURN AIR SENSOR helps protect against outside allergens that may make their way into the system from a return duct, while also controlling noise that can come with forced-air systems.

A variable-speed furnace blower operates at a lower speed when there is no return air and increases to full speed only when necessary. This improves circulation of heated or cooled air throughout your home, helping reduce waste while minimizing energy costs. The RETURN AIR SENSOR saves even more energy by reducing fan speed when the filter is clean.

The Lennox 19L22 is a single-story 19-inch by 22-inch return air sensor. This item has a piezoelectric type, single terminal. It's a solid state, temperature (ambient) and voltage, galvanically isolated sensor with an NTC thermistor to sense return air temperature. The sensor comes with a mounting plate. It's built into metal construction for corrosion resistance and protection from shock and vibration.

The return air sensor controls your furnace blower by sealing off the return air duct when the furnace reaches the desired temperature. The return air sensor replaces older two motion sensors and works in conjunction with a high-speed centrifugal blower motor.

The Lennox 19L22 return air sensor helps to protect your HVAC system by monitoring the return air temperature, which may prevent the compressor from over cycling and increasing electrical demand.

Lennox® residential AC systems have a built-in air sensor. The sensor uses technology that automatically detects the temperature and amount of moisture in the return air in order to effectively control the evaporator when it is used with Heat Pump and Heat Recovery equipment. The return air sensor also adjusts the speed of the compressor, which can give you up to 20% more energy efficiency. It's an ingenious design that makes your system work on its own, but you still retain complete control over your thermostat. Let Lennox make your life easier while reducing your utility bills and carbon footprint at the same time.