Short YouTube video clip (single speaker) filmed at a site "unit graveyard" where an HVAC technician shows a recently replaced package unit, points out corrosion, dirt, and buildup on the old coils, explains these contaminants reduce heat-transfer efficiency and force the system to work harder, warns that occupants may breathe those contaminants, and advises regular cleaning, servicing, and checks.
I'm back here at the office in the unit graveyard. I call it that because this is where we put the old units after they've been replaced. I like to come out here and take a look at them and see what you are breathing inside your homes. So take a look at this unit. This is a package unit we just replaced. This is the old one. Look at that. Coral, dirt, stuff, build up on it. All this makes the unit work harder, become it becomes less efficient, becomes harder to transfer heat through these coils. And on top of that, you're breathing this stuff in the house. So, as usual, get your unit clean, serviced and checked. Help prevent this from happening to your system at home.
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