Rheem RTEX-36 Electric Tankless Water Heater 36 kW
- 36 kW (36000 watts) heat output
- 240 volts electric supply
- 6 gpm flow rate
- 140 °F maximum temperature
- 3/4 in. NPT connections at the bottom
- Wall mount, indoor installation
- External adjustable digital temperature control
- 11.07 kg, brass and copper materials
Updated 20 days ago · Based on the Amazon listing and published specifications, not hands-on testing.
A strong candidate for whole-home or light commercial hot water where a heavy electric supply already exists. Wiring needs and warranty are missing from the listing, so plan the electrical work with an electrician.
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ASIN: B07CVPM1DKModel: RTEX-36Category: Water Heaters
Overview
A homeowner or business owner swapping a tank for on-demand hot water gets a wall-mounted electric tankless unit from Rheem. Water heats as it flows through, with an external control for setting the temperature and connections on the bottom for the plumbing.
Endless on-demand hot water from a wall unit frees the floor space a storage tank would take. It draws a large electrical load, and the listing does not state breaker size, wire size or warranty terms.
Who it's for
Owners replacing a storage tank in a house or shop with spare electrical capacity can mount this unit indoors on a wall. Homes on a small panel, or buyers wanting an outdoor install, need a different heater.
Pros and cons
- On-demand hot water, no storage tank
- External adjustable digital temperature control
- Wall mount saves floor space
- Brass and copper materials
- Needs a heavy electrical supply
- Breaker and wire sizes not listed
- Indoor installation only
Performance notes
Output depends on how far the unit must raise the incoming water temperature at the flow being drawn. Cold inlet water or several fixtures at once push it toward its limits, so outlet temperature can drop at peak demand. The external control sets the target temperature.
Specifications
| Brand | Rheem |
|---|---|
| Model | RTEX-36 |
Frequently asked questions
Does the Rheem RTEX-36 store hot water?
No. It is a tankless unit that heats water on demand as it flows through.
Can the Rheem RTEX-36 be installed outdoors?
The listing describes it as an indoor installation, wall-mounted unit, so plan for an indoor location.
Is the Rheem RTEX-36 tankless water heater for homes or businesses?
The description says it suits residential or commercial use.