If you’ve lived in at least a single home component in your life, you’ll guess what I’m referring to when I talk about the air handler closet. It’s the a single closet in the home that has a metal door, instead of wood or any other material. This closet is where the air handler is kept, which is the interior portion of a split cooling system, and normally, the closet for the air handler is just big enough to house the handler and possibly the water heater. You could use the section for storage, but I wouldn’t command edit – here’s why! Last summer, I used the air handler closet to store a few folding chairs and some tarps for outdoor use, and my air conditioning method coincidentally started to put out worsening air quality each day since I put those things in the closet, but I never made the connection in our head! Eventually, after many weeks of a gradual decline in our indoor air pollen levels, the a/c method completely died on me. I had no method what caused this, until a certified heating and a/c worker came to the home on behalf of the property management. The first place he looked was, of course, the air handler closet. When he saw the tarps and chairs blockading the air handler, he couldn’t help however laugh! He turned to me, explaining that this was a big no-no when tending to the HVAC method in an apartment. “You’re lucky”, he explained, “this could have caused drastic water damage in your apartment!” Apparently the drip pan for the a/c method was also in this closet, and it was full to the brim with condensate from the air conditioning unit, then he was right – I easily was lucky this didn’t get worse!