There are lots of options to consider when you're trying to cool your home without central air conditioning. Look at the BTU levels (the higher the number, the better the cooling) and then consider either a window (to cool a single room, like the bedroom), or a portable air conditioner. Alternatively, reversible window fans allow you to vent out warm air during the day and bring in cooler air at night. Many even have a thermostat and will shut off once the desired temperature is reached.