Tag: Water Heaters

Heat Pump Water Heaters: Performance at Varying Ambient Temperature

I recently received two graphs from AO Smith that show the difference in performance for their residential heat pump water heater, the Voltex.  A lot of manufacturers print performance at one condition.  The charts below shows the difference across the entire range. This data reiterates the importance of climate. Images Courtesy of AO Smith




AO Smith Optimizes Tankless Product Line, Discontinues ATIO-710

AO Smith, America’s largest water heater manufacturer, has stopped production of the ATIO-710.  Jeff Ogan, Product Manager of AO Smith’s On Demand Products, wrote in a note to representatives that “the performance of the ATI0-540 condensing heaters is a perfect, high-efficient replacement for the 710 series”.  He goes on to add that the flow rate…




How the New NAECA Regulations Affect Water Heaters

The National Appliance Energy Conservation Act (NAECA) was first enacted in 1987 to set minimum energy efficiency standards for certain household appliances – refrigerators, freezers, room air conditioners, clothes washers, dishwashers, ovens, and water heaters.  Since 1987, revisions were made in 1990 and 2004.  On April 16th, 2015, new regulations under NAECA will go into effect…




Rinnai Releases New Tankless Water Heater with Built-In Recirculation

According to a press release by Rinnai, a leading manufacturer of gas applicances, two new products are being introduced to their Condensing Tankless Ultra Series.   Known as the “RUR” models, the RUR98e and RUR98i are both 199,000 BTU/hr input.  The “e” designates outdoor installations, the “i” for indoor installations.  The biggest features that Rinnai…




Heat Pump Water Heater: Don’t Dismiss It In Cold Climates

The heat pump water heater (HPWH) made its debut on the market in 2010.  The big players in the game include AO Smith, GE, and Rheem.  Unlike conventional heaters,  the HPWH can operate solely by using the surrounding air to heat the water in the tank – under certain conditions.  This capability makes it far…