Open Heating, Ventilation & A/C system ends up stinking

This part is usually entirely comfortable.

I can get by with just an open window & a ceiling fan most of the time.

But this year has been nothing however non stop rain. It is hard to keep a window open when it won’t stop raining outside. Thankfully my Heating, Ventilation & A/C system can be switched to an open system. That means that it takes air from outside rather than inside the house. I just turn the control unit to the fan setting & then go to the utility shed & change it to “open”. Then nice air from outside circulates throughout the whole apartment however no rain water gets in. It is entirely nice. Too bad I haven’t used this capability in more than a few years. So when I finally did use it, a terrible stench circulated the house. It stinked like an outhouse. It was disgusting. I opened a few windows, in the rain, then hoped that the stink would just air itself out & go away. After 30 hours it became clear that this was not going to happen. I had to turn off the Heating, Ventilation & A/C fan & then keep the windows open while running the ceiling fan. Then I had to put towels in all the windowsills. After that I called up our Heating, Ventilation & A/C supplier. I wasn’t sure if the stink was just because of the open system or if there was something entirely wrong with out Heating, Ventilation & A/C system. It turned out it was just the open system. There was a bunch of dirt, mold, & a dead birdie in the intake area. That is all cleaned out now. The Heating, Ventilation & A/C workers put up a mesh screen so no more stuff gets through into the tubing either. Now, if it would just stop raining, I would be thrilled as a clam.

Hybrid heating