So air flows from your ducts through the filter and into the furnace.
Furnace air flow diagram.
This article includes a diagram of furnaces with different air flows and an explanation of when different configurations are appropriate.
Which way does furnace air flow.
What s the right furnace filter direction.
Forced air furnaces recirculate air through a home.
Air flow configuration such as upflow downflow and horizontal is a common way to describe furnaces.
Maybe no gas to the pilot.
This sounds like your furnace is sparking clicking but there is not any ignition to the pilot.
Gas furnace diagram one of the benefits of a forced air system is that it can receive a whole house air conditioning unit a humidifier and an electronic air filter all of which can take advantage of the furnace s air handler and ducts for delivery of conditioned air to rooms.