For my Lennox with a 4" media filter and being able to see the flame I
dont need yearly maintenance, my installer and neighbor installer told
me this, and i have found it true. If you dont know anything about
equipment, use a cheap filter system or have a old unit you can
benefit as many folks dont know or do any maintenance, I have a staem
boiler checked ever year but not my HW boiler or furnace, as I said If
you have a good air filter that is maintained and can see the flames
condition, and the unit is not real old yearly inspection I find
usualy ends up a waste of money, the AC and coil I do believe yearly
maintenance is required. Bubba wants everyone to believe that a
furnace with AC needs 2 inspections yearly, You can do it all usualy
with your AC check on a furnace.
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