A Furnace and ducting system that is neglected will be prone to malfunctions, reduced service life, and loss of proper heating and cooling within the home, and higher energy costs.
Common problems found in residential Heating/Cooling systems
Disconnected flex ducting, heating/cooling the attic or crawlspace rather than the room in was designed to heat/cool.
Dirty Return air ducts causing air filters to become clogged and changed more often.
Dirty fan blowers or heating/cooling coils not allowing efficient air flow to provide the rated heating and cooling.
What is in Dust.
House dust is a mix of sloughed-off skin cells, hair, clothing fibers, bacteria, dust mites, bits of dead bugs, soil particles, pollen, and microscopic specks of plastic.