It’s not exactly what you’re wanting, but there is Remote Video Camera on F-Droid.

If I were doing it, I would look for an app that just implements the same basic functionality as a network-connected camera. Then video storage, alerting, motion detection, etc. would all be handled by something like zoneminder.

In my experience, printers in general are terrible, but HP LasetJet Enterprise m series printers are excellent.

Dude, you don’t just pump the combustion result through your house.

I wrote “LPG or natural gas could certainly contribute to humidity levels in some cases,” and was thinking specifically of non-vented gas heaters, which are very common in my experience, and are in some cases used for whole-house heating where there isn’t a central air circulation system. In this case, the combustion result is literally released into the house.

While this thread is about gas heating, the article is about gas cooking stoves, which in most cases can be vented only at most very poorly (with a range hood), so the risk being dicussed is literally a result of releasing the combustion result into your house.

I believe hydrocarbon fuels produce water (vapor) as a combustion byproduct, so LPG or natural gas could certainly contribute to humidity levels in some cases.

There may also be a separate effect by which the heat strips in an electric furnace dry out the air versus the heat exchanger in a gas furnace, but I don’t know about that.