Instant Hot Water Heaters

Standard storage water heaters routinely exceed 60% efficiency, manufacturers such as Takagi and Rinnai have pushed tankless water heater efficiencies over 80%, and AO Smith has introduced tank-based versions exceeding 90% efficiency.

The rest is here:
Low Impact Living » Blog Archive » Hot New Entry In Water Heater Wars

Other articles you might like;

• Rainwater Systems For The Summer Months
• If You Can Not Come Up With The Money For Advair Because You Don’t Have Rx Access Without A Prescription Program
• Cheaper Residence Progress
• The best way to be able to Find out The Ideal Used Kitchen Appliances
• With No Rx Access, Can Americans Pay For Selzentry?