Rinnai RE180iP Propane Tankless Water Heater 8.5 GPM
- 8.5 GPM, up to 7 fixtures at once
- 180,000 BTU propane, non-condensing
- Indoor, wall mount
- 160 F maximum temperature
- 120 volts, LED display with error codes
- 15-year heat exchanger, 5-year parts and labor if registered
Updated 5 days ago · Based on the Amazon listing and published specifications, not hands-on testing.
A compact propane tankless heater that supplies several fixtures at once and only fires when hot water is drawn. It needs professional installation and venting, and Wi-Fi control is an add-on.
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ASIN: B0B57MDSCSModel: RE180iPCategory: Water Heaters
Overview
A gas burner and copper heat exchanger heat water only as it flows, so there is no storage tank to keep hot. Rinnai packs this propane, non-condensing unit into a suitcase-size wall cabinet with an LED display for service codes.
Endless hot water for a busy household from a small wall unit frees floor space a tank would take. Installation needs a professional, and the labor warranty drops if the unit is not registered in time.
Who it's for
Households running showers and appliances at the same time suit the flow rate. Very cold groundwater regions should check the brand's sizing map first.
Pros and cons
- High flow for several fixtures
- Compact wall-mounted cabinet
- Heats only on demand
- LED service reminders and codes
- Professional install recommended
- Wi-Fi module sold separately
- Registration needed for full labor warranty
- Description wrongly mentions natural gas outdoor use
Performance notes
Flow through the unit triggers the burner, and output modulates to hit the set temperature at the current flow rate. Colder incoming water reduces how many fixtures it can serve at full temperature, which is why groundwater temperature matters. Non-condensing units vent hotter exhaust, so venting must suit that design.
Specifications
| Brand | Rinnai |
|---|---|
| Model | RE180iP |
| Dimensions & fit | |
| Item Dimensions W X H | 14.05 x 27.24 in |
| Item weight | 24.38 kg |
| Capacity & performance | |
| Flow Rate | 8.5 gpm |
| Maximum Temperature | 160 F |
| Heat Output | 180,000 BTU |
| Power & efficiency | |
| Power Source | Propane gas |
| Voltage | 120 volts |
| Efficiency | Non-condensing |
| Construction & materials | |
| Material Type | Copper, stainless steel |
| Compatibility & installation | |
| Mount type | Wall, indoor |
| Warranty & support | |
| Manufacturer Warranty Description | 15 year heat exchanger, 5 year parts, 5 year labor (1 year if not registered within 90 days) |
| Other details | |
| Special Features | LED display, service reminders, error codes |
Frequently asked questions
How big is the Rinnai propane tankless heater?
It measures 14.05 inches wide by 27.24 inches high and weighs 24.38 kg, about the size of a small suitcase.
Can I install the Rinnai tankless heater myself?
Rinnai recommends professional installation and does not recommend installing it without a technician.
How many showers can it run at once?
Up to 8.5 GPM, which Rinnai describes as 7 fixtures at once.
Does it have Wi-Fi?
Not built in. Wi-Fi control needs the separate Controlr module.