Reptile & Amphibian Forums

Where should they be located? On top and it lets out heat, near the bottom and it lets in cool air so which is best for a boa cage that needs to stay humid and warm in a rather drafty house?

Also because we have extremes of weather(even with air conditioning and heat the house varies widely) I need to be able to keep another cage cool in summer(under 80).How can i put in vents that will hold in some heat in winter but let it out in summer? Maybe closeable vents and some sort of fan?
Should the fan be facing in or out?

It sounds like your house is a candidate for "cash for caulkers". Because the house does such a poor job of buffering the inhabitants from environmental fluctuation, either your cages or the room they're in will have to do the buffering.

If you have a sizable collection you should consider insulating a sole-purpose room or closet. There have been ideas posted here over the years that would work for renters; I'm not just talking about getting behind the sheetrock. For example, on this forum I've seen folks talking about draping reflectix on the walls.

Because you mention a warm-humid animal (the boa) and also mention something else needing cool temps (

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Well I am putting the animals in the warmest room, it only has one window so stay a bit better then the rest the house.
But if I was only putting vents in the boas cage where should they go?

I will deal with the kings and milks here in a month or two they are fine right now in bins.

Sorry, I had a system error and lost a long post too (as Jeremy noted recently about himself).

I'd said something like "lots of people are happy with a pair of vents - 1 on each end, halfway up from the bottom". Sort of a hedging strategy balancing heat & humidity loss (with high vents) with lower efficacy (or something bad??? - with low vents). Perhaps the prejudice against low vents is based on nose-rubbing, I don't know.

With heavier gases like CO2 or radon, low vents would actually be better (and lose less heat and water vapor); an arboreal animal like a young common boa would also be less prone to nose rubs with low than with high vents.

I have on occasion over-done ventilation; it can be corrected with temporary or permanent solutions. Rubber bands with plastic wrap, glued-on rigid plastic, etc. Under-ventilation is a little harder to fix once you're committed...but a drill is a great tool!

Best,
Jimi