The last fossil load on my propane tank is the clothes dryer. I'm wondering if anyone in this group has successfully retro-fited a gas or electric dryer with an air over water heat exchanger? Seems like a good idea, I have a great wood boiler and 23 acre wood lot. Plus, I love cuttin' wood! I'm interested in the design, controls, heat exchanger size, ducting, and airflow requirements. And, of course, how it performs. My storage tanks usually run between 140-180. Your input is appreciated!