Gas furnaces have typically (2) categories.
80% Efficient Furnaces and 90% Efficient Furnaces.
80% Efficient furnaces can be determined by the metal pipe to flue this furnace. 90% Efficient furnaces can be determined by PVC pipe or pipes as the flue.
80% Furnaces can be converted to 90% to make your energy cost lower. With both of these, you can also get a variable speed blower as an option for optimal air flow and comfort. There are tax credit incentives to upgrade your 80% furnace to 90%
My Gas Furnace Equipment isn’t working……..
Check to make sure that your thermostat is set in the "heat" position
Make sure that the temperature setting on the thermostat is set above (or higher than) the indoor temperature showing on the thermostat.
(This tells your heating system that it should provide heat!)
Ensure that there is power to the furnace:
Try turning the fan to "ON" using the fan switch on the thermostat to test for power to furnace.
Check the circuit breakers at the electrical panel to make sure they are in the "On" position.
Check the SSU switch (it looks like a light switch on a gray box located at the furnace) to be sure it is in the "ON" position
Replace the furnace filter if needed.
All 1-inch thick furnace filters should be replaced monthly.
Purolator 2-inch thick, and other high-capacity pleated filters can most likely be changed every other month or just 6 times per year.
If the system is running but you have not changed your filter, the filter may need to be replaced.
Check all return air grilles to make sure they are not blocked by furniture.
Check all supply air registers to make sure they are open and blowing air. (The return air grilles are normally located on your walls and are wide and flat