How to Replace the Thermal Sensor on a Lennox Furnace?

Answer Because your Lennox furnace runs on gas, it is important that safeguards are working properly. One such safeguard is the thermal sensor. This component sits next to the pilot light in the furnace a... Read More »

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How to Clean a Flame Sensor on a Lennox Elite Furnace?

All Lennox Elite Series furnaces come with a flame sensor. The sensor is a safety device that permits the furnace to operate. A dirty flame sensor causes a furnace shut down, so it needs occasional... Read More »

How to Clean the Flame Sensor on a Lennox Pulse 21 Model G21Q3-60-1 Furnace?

The Lennox Pulse 21 furnace has a flame sensor that will not allow the furnace to run if it is covered in debris. If the sensor is dirty, the heat will not go on. You can remove the flame sensor an... Read More »

Lennox Vs. Trane Furnace?

Furnaces are used for heating homes and commercial buildings. Most furnaces use either electricity, gas or oil to heat air that is then pumped throughout the HVAC (heating, ventilation and air-cond... Read More »

Pilot Instructions for a Lennox Air-Ease Furnace?

Energy-efficient Air-Ease furnaces by Lennox come in gas and electric models. Gas furnaces are equipped with a pilot that must be lit for the furnace to produce heat from natural gas. If the furnac... Read More »