I have a set of moisture rated cans in my walk in shower. I would bet the ones in your parents house are rated for moisture also. I know for a fact I wouldn't be able to use a heat lamp because of burning up the rubber seal that seals the bulb to the housing. Also my trim piece that goes around the bulb is aluminum with a rubber seal under it. That aluminum would get very hot very fast!
I'm not a electrician either but have wired several houses with no catostrophic failures.... yet lol
I'm not a electrician either but have wired several houses with no catostrophic failures.... yet lol