A hot water recirculating pump is the next best thing to a tankless heater. They can help reduce energy consumption and lower utility bills.
Hot Water On Demand - Recirculating Pump Systems
Grundfos Comfort Series UP 15-18 B7 .092 HP Hot Water Recirculation Pump 59896121 - The Home Depot
The Benefits Of A Hot Water Recirculating Pump - Big B's Plumbing
Smart Recirculation Control 32 - Leridian Dynamics
Taco Comfort Solutions SmartPlus 1/25 HP Non-Submersible Hot Water Recirculation Pump in Stainless Steel 008-IQSF6 - The Home Depot
Reviews for Taco Comfort Solutions TacoGenie 1/25 HP Hot Water Recirculating Pump with Undersink Kit
What is a Recirculation Pump & How Does it Work?
Domestic Hot Water Recirculation Systems
Laing E1-BCSVNNNW-01 60A0G1006 1/2 Sweat Circulating Pump with Cord
Residential Hot Water Recirculation Pumps
How To Design Hot Water Recirculation Systems