Today I got my furnace ready for her summer slumber. My furnace lives in the basement where it is cool and damp all summer long. This type of environment can be detrimental to the appliance. Coal ash and moisture will create sulfuric acid which is highly corrosive to metals.
I dismantled the firebox components, pulled out the grates, baffles and the front and rear liners. I also removed the firebricks. I wire brushed and vacuumed thoroughly. Next I brushed everything down with motor oil. I paid special attention to cleaning and oiling of the water coils.
Finally, I will pull off the flue pipe and seal the firebox breach with plastic and a rubber band. I will also furnish it with a 100 watt light to drive down relative humidity inside the firebox.
Shortly I'll order my 6 tons of coal for next year. In the meantime "Ashley" will get rested up for next season's heating.. Everyone please feel free to post pictures and detail your summer prep work..