Yes they can. Furnace filters help to divert dust and keep your furnace and air conditioning coil clean. As long as it doesn't break, a furnace filter can be reused.
Make sure the condensation water, inside the furnace, is draining out. You probably should check the coil, inside the furnace and clean it.
re-level the unit,and/or clean the coil
after (dowanstream) of the gas or oil-fired furnace
For one to maintain a good furnace, one must: clean the furnace regularly, replace or clean the filter, service the furnace once or twice a year, make sure that the furnace is kept clean and dry to name a few.
Yes it does.
simply by measuring the coil voltage, coil current & power factor.
Hire someone to clean your furnace and give it a tune up. Worked for me.
Could be a drain for the inducer motor if it has one and it depends do you have a a/c coil on your furnace if so it could be a drain for it.
yes....just need to support evap coil and plenum while removing furnace and seal back up once furnace is set into place.
How much does a company charges to clean a condenser and evaporator coil
Furnace filters control the amount of particles that pass out of the furnace and into the house. They are essentially the first line of defence in keeping the air in your home clean.