Room coolers

We bought one from here 2 years ago, it’s great.
probreeze.com/collections/air-coolers

Many air purifiers blow out cold air. A fan doesn't cool the whole room and stirs the dust about...not good for chests and allergies.

My first choice would be a fan - that can make a big difference to how you feel and much cheaper to run than anything that actually cools the air. In tropical countries and many other warm places, ceiling fans are as standard as lights. But a good fan on a stand that can rotate can work well unless the temperatures are very high.
Daughter who lives in a new house got a fan for bedroom and it was sufficient for them to sleep comfortably.