I would like to know whether anyone has seen a Lennox Pulse in a gas pack. I have and if I am not mistaken the Pulse was close if not at 90% efficient. So why can they not make a 90% gas pack. Possably mixing a very small amount of heat from combustion to a resevoir of water till it evaporates and exits as a vapor.
Please tell me what you guys think. Maybe my imagination is just getting carried away.