1. Rheem RET 13 Electric Tankless Water Heater, 4 GPM
http://www.amazon.com/gp/product/B003UHUSGQ/ref=as_li_tf_tl?ie=UTF8&tag=emfamazon0d-20
2. Rheem Outdoor Liquid Propane Tankless Water Heater for 2-3 Bathroom Homes - RTG-66XP
http://www.amazon.com/gp/product/B003UHURXU/ref=as_li_tf_tl?ie=UTF8&tag=emfamazon0d-20
3. Rheem 42VR5040F High Efficiency Natural Gas Water Heater, 50 Gallon
http://www.amazon.com/gp/product/B001UJNYJO/ref=as_li_tf_tl?ie=UTF8&tag=emfamazon0d-20
4. Noritz NR71-SV NG Indoor/Outdoor Tankless Natural Gas Water Heater, 6.3 GPM
http://www.amazon.com/gp/product/B003UHUXFC/ref=as_li_tf_tl?ie=UTF8&tag=emfamazon0d-20
5. Rinnai R94LSi Natural Gas Indoor Tankless Water Heater, 9.4 GPM
http://www.amazon.com/gp/product/B002M42S0W/ref=as_li_tf_tl?ie=UTF8&tag=emfamazon0d-20
