TPI Fans & Heaters Home › TPI Fans & Heaters TPI Electric Heaters TPI Evaporative Coolers / Swamp Coolers TPI Fans & Accessories Ohio Power Tool carries a full line of TPI industrial fans, portable AC units and electric heaters. For professional portable heating and cooling Ohio Power Tool has a solution. Portable electric heaters like the Fostoria Heat Wave Electric Salamander that can heat a 2000 sq ft area 40 degrees in 64 minutes. While our portable air conditioning units can cool effictively up to 2,800 sq ft. If you need TPI products and accessories you do not see on our website please call 800-242-4424 and we would be happy to ship the product to you in as little as 1 day!