21 Oct, 2019 → by ClaimboUser491353
Modification to UL/AGA/CSA Listed appliances.
The return air source modifications to a conditioned space located dryer would void any listed approval. The temperature limits of internal wiring now has preheated return air. The heating of your house with a dryer is only safe if it’s an electrical appliance. YOU MUST emphasize this. Again, modification of Listed Appliances! Your well intentioned advice can be dangerous. Life cycle cost analysis should be done for a typical energy savings scenarios.