Loose snake, cold basement

My son’s ball python got out of her tank Thursday. After tearing apart our entire downstairs, I have 2 theories. She either somehow got into our vents, or went under the 2" gap of the basement door.

Our basement stays around 65 degrees F during the day, and I’ve checked the normal “warm” spots (furnace, hot water heater, dryer …) with no luck. Also checked some of the easier to access spots she could hide. I set up a hide with a heater on the floor on top of a blanket, and I’m hoping if she’s down there, she’ll make her way to it.

But, realistically, if she’s down there and hidden SUPER well, how long is she going to be OK? We’re coming into warmer weather, but it’ll still only get up to around 70 ambient temp.

Look up! Despite being heavy bodied balls climb very well.
Now, 65° is pretty cool for a ball but if found soon should be ok. When you find it be sure to keep an ear on the breathing for a few weeks to make sure it hasn’t developed a respiratory issue. Don’t just drop it back into a warm cage but let it warm s l o w l y so as not to cause a build up of moisture in the lung(s).
Keep an eye on other pets too. Cat, dog.They will likely find it before you do.