Mike Parker, of A.O. Smith, describes current water heater sales. This might not sound like the most exciting topic, but his findings do have significance.

Tankless water heaters have been heavily advertised in recent years, and heat-pump water heaters are seen as the wave of the future. They have experienced high sales growth, yet those sales are still a tiny fraction of the overall market. What makes up the rest? The ubiquitous plain-vanilla tank-type electric and gas heaters that are cheaper to buy and simpler to maintain. Check out William Hoover's ruminations on this same subject.

Changing the face of the water-heating landscape is still a long way off. His presentation is on the ACEEE website, so if you want to return to waterheaterrescue.com, you'll have to use your browser's back button.