Top 5 Hot Water Recirculation Systems in the Market Today

By: Smart Zero Home
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Once you know the tankless water heater specifications (get specifications customized for your home) befitting your needs and your home size (see tankless water considerations), its time to zero in on the tankless water heater that you want to buy.

Plug load controls can reduce the 'Phantom Loads' by ensuring the appliances are switched off

There are a lot of good tankless water heater options available in the US markets today. For example - Rinnai and Rheem natural gas tankless water heater, offer one of the highest efficiencies available (energy factor of 0.94). For very cold climates, electric tankless water heater from Ecosmart can heat input temperatures as low as 37 degrees. The following is a list of the current top rated tankless water heaters (based on retail and consumer data, and analysis):

Company Laing Watts ACT Taco Grundfos
Rating* 9 8 7.5 8.4 9.4
Price** $479 $192 $603 $473 $236
Flow Rate (GPM) 4 GPM 2.2 GPM 25 GPM 8.5 GPM 9 GPM
Model AutoCirc E10 Series Circulator with Timer, Cord and Fixed Thermostat Hot Water Recirculating System with Built-In Timer D'MAND KONTROLS System S3-100-PF Series System On Command 1/2-Inch MPT Pump with Plumbing Connection Kit Comfort Series Recirculator Pump
Model Details (from Manufacturer)  - Energy efficient ECM motor, Built-in temperature control, No return line required
 - Conserve Water - Up to 15,000 gallons of water per year, Save Money - Up to 10% of your water bill

- Maintenance Free, Easy to install in less than 1 hour
 - Recommended for use with standard plumbing systems in building up to 4,000 sq. ft. with tank water heaters

 - Pipe runs up to 100 lineal ft. with tankless water heaters
 - Runs only when activated by the user

 - Automatically senses when water is hot enough - Saves water, energy and money

 - No new return line needed and no need to drain the system
- TLC = Timer, Line Cord, 6-Foot
Flow range: 0 - 9 U.S. GPM, Head range: 0 - 6-Foot
Motors: Single phase, 115V

- Maintenance-free, low energy consumption, easy to install, quiet running
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* Smart Zero Home overall rating based on customer and retailer feedback and our 5 parameter market analyses
** Price is the best price available online, and may include discounted/bargain prices that may not be available everywhere

Also see our post on Tankless Water heater 101.