His furnace will rust out from the condensate, spill carbon monoxide, and evolution will take it's course*.
*He probably also thinks that carbon monoxide detectors use too much electricity and emit so called "greenhouse gas emissions."
General public's attitude towards our energy predicament:"I reject the reality of finite resource depletion and substitute it with my own; energy is infinite, we just need an alternative storage medium to run the cars on. The economy can grow indefinitely - we just need to "green" everything! Technology is energy! Peak what?"
Doesn't this idiot know that h2o heater is way more inefficient than his furnace and like what others haveposted his flue will rust out and evolution will take it's course. lets all hope his wife is beautiful and we can all become funeral crashers . and how about that little invention it will save me $5 a month and will pay for it self in 2-3 years. wow truly an idiot.
He did a bang up job piping that mess too. He's also a real jerk, anyone who has pointed out technical faults in the comments has been gotten a nasty reply. I hope he makes millions and then we make millions swapping them out (see: Plexvent, etc).