avwFm87mDz2012-10-22T12:04:09+00:00What are my options for Heat Exchangers?SunMaxx offers a wide variety of Heat Exchanger options for your solar system. External Brazed Plates are available for applications from 50,000 BTU's to 160,000 BTU's. SunMaxx also offers Air to Water Heat Exchangers from 60,000 BTU's to 220,000...