During winter we run a gas-powered heater and evaporative humidifier to maintain indoor air quality.
Meanwhile, every day (big family!) we run a gas-powered clothes dryer which dumps hot, humid air outside.
Are there any gas-powered dryers that are so efficient that they can be vented indoors (like vent-free fireplaces)? Or is there a way to split the combustion vent from the dryer vent stream so the former goes outdoors and the latter can be redirected into the central air handler?
Or is the amount of energy spent on the dryer inconsequential compared to what a 98% AFUE central gas heater wastes?