FlatPlate, Inc. (York, PA) touts that its brazed plate heat exchangers are gaining popularity in hydronic applications over traditional shell-and-tube heat exchangers because of their compact size and performance characteristics. It says improved thermal performance of the plate units make them ideal for hot water heating, radiant floor, snow melt, and swimming pool heating applications. The units range in size from 10,000 Btuh up to 5MMBtuh for heating.