Not unless your unit has air flow drop sensors that could damage the pumps. If you installed a new filter and the furnace then quit maybe you didn't properly replace the door. There may be a switch attached to the door or filter. Look fer it!
Yes. They are there to draw the air back into the furnace that blows out of your heat/cooling vents. They help create air circulation and clean the air that is "returned" to the furnace and passes thru the furnace filter.
yes, because the a/c compressor in operating in the defrost mode.
There is always a wall thermostat for regulating furnace heat.
In a furnace large amount of the heat supplied is wasted in the form of exhaust or flue gases.. that s called as heat loss in a furnace..
First check your thermostat to determine if the anticipator is set correctly and is operating properly.
Somewhere between the return air grille in the home and the return air duct connection on the furnace.
No, unless the airflow is so restricted that the heat builds up and triggers the thermal disc, which will shut down the furnace. The thermal disc is a safety switch that shuts the gas down so the unit will not over heat. About the filter, I change mine at a minimum of three times a year.
If the compressor ls operating then either the heat control is stuck on heat, or the diverter door is not opening. Turn on the heat an see if the heat temp will go up and down, If its ok then a door is probably stuck in heat mode. Check for vacuum leaks, as the door operates on a vacuum.
A heat pump will do this, a furnace should not. Are you sure you have a furnace?
ruud furnace only blows cold air, no heat
it is necessary to heat the compressor and strike it with a rubber mallet!
Furnace is an enclosed chamber in which heat is produced