Rheem rte-13 Electric Tankless Water Heater 13kw Reviews

Rheem tankless water heater is a leading heater brand on the market all over the world. It experts both in electric and gas tankless water heaters. Electric tankless water heater tends to be far cheaper than propane or gas type, therefore, most people would like to choose electric types used for travel or recreation.

In this article, we would like to give you Rheem RTE-13 electric tankless water heater 13kw or 4gpm reviews.

Rheem rte-13 Electric Tankless Water Heater 13kw Reviews

rheem rte 13 electric tankless water heater review
rheem rte 13 electric tankless water heater 4 gpm reviews




This one is widely regarded as the hottest selling electric tankless hot water heater on each platform. No matter for its performance or for its appearance, it is the most brilliant one.

  • Flow Rate

This tankless water heater offers a maximum flow rate of up to 4 gallons per minute. That is to say, it supports one shower or one kitchen faucet use a time. Compared with gas or propane tankless water heater, its flow rate may be lower, but for small tiny home use or for travel use, this flow rate range is a perfect one.

  • Water Temperature

In terms of water temperature range, it ranges from 50-70 degrees F. Accurate temperature shows on the screen with LED light. Unlike other electric tankless water heaters that are unable to set accurate temperature, this one adds button on the machine, from where you can change your water temperature in increments of 1 degree a time.

  • Energy

This tankless water heater is a highly energy efficient type. As we know, an electric tankless water heater is more environmentally friendly than gas or propane type, for it does not produce carbon dioxide directly.

If you are worried about its using costs, do not worry, it is designed to be 99.8 energy efficient and thus saves much money on electricity bills and also heating bills.

  • Installation

The size of which is super small, occupying little space in your bathroom. There are 3-foot electric cable and 1/2 NPT adapters included with the machine, and in installation, you need only 1 hour to put it up.

  • Price

Tankless water heater price is perhaps the most important thing in consideration of getting it. If you do want a highly cost-effective and affordable type, we can say, this is the perfect one for you. Compared with gas or propane type, the price of it is 2 times lower even. With no more than $400, then you can get the best type for a home.

Main Features:

  • External adjustable digital thermostatic control
  • Accurate temperature adjustment in increments of 1 degree F
  • 99.8% energy efficient
  • Simple installation
  • Self-modulating power control
  • Instant hot water supply
  • Multi-stranded wire


  1. Endless hot water, very efficient
  2. Hot water to hand sink takes about 15 seconds.
  3. Water stays the same temperature in using, even for long time use
  4. Easy to install, takes about 1 hour for installing.
  5. Less using cost on electricity bill
  6. Compact, suitable for studio family
  7. Money saver on using and installation


It is good for one only(you can not use it for bathroom and kitchen simultaneously) / use one faucet or shower a time

Rheem rte-13 electric 13kw 4gpm tankless water heater is the most worth buying type on the electric type. On purchasing price, it has an unbeatable advantage, but from all its performance, you will see it is far worth its price.

However, it is a perfect one for a studio home, if you have a large family with three or four bathrooms or faucets, try to find a suitable one in our whole house tankless water heater reviews. And for travel or small home daily use, get this one and you will never regret.

If you want to get more detailed information on specifications and price, please feel free to check on Amazon.



David: Penn State-educated Mechanical Engineer and Business-savvy Fluid Dynamics Specialist. Balances family plumbing business support with a thriving engineering career at a top, undisclosed company. (they want it that way) I help Will with plumbing and HVAC needs on his Real Estate.

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