A rental costs $375 per day. That includes 1 heater, 3 fans, and the power cords. The rental can heat up to 400 square feet in 24 hours. That means it can heat treat two smaller rooms (up to 200 square feet) in 12 hours per room or one larger room (between 200-400 square feet) in 24 hours. If you need to heat treat more than 400 square feet, you will need a multi day rental.