Orchid Home temperature

[pokefan_nat]

I live with my family and she keeps the AC on at 73 and it’s kind chilly in my room. My orchid leaves aren’t freezing but it’s lightly cool. Idk if I need to buy a miniature heater or use this heating pad I bought a while ago. It stays 73 F day and night and I’m growing cattleyas, one phal and one dendrobium ‘memory love fizz.’ Most of the cattleyas are seedling size except for two. It’s not blowing on the plants, but idk if it’s a good thing.