Rinnai RL94iP Propane 9.4 Gallons Per Minute | Review

410 Gone

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Rinnai RL94iP is a 50.44 pounds sleek compact tankless water heater with the capability to produce 9.4 gallons of water per minute. It is manufactured in Japan with a dimension of 31 x18 x13 inches, occupying little space in your home. It became available 10th June 2011.

Rinnai RL94iP is an indoor installation unit with concentric venting system which opens to outside. It is energy star certified with gas inputs of 10, 300 – 199,000 BTU. This makes it highly efficient in supplying endless hot water to two showers and sinks simultaneously at a pre-set temperature. It is highly efficient and ideal for winter times, able to maintain a steady temperature in such cold climate.

Features and Benefits of Rinnai RL94iP

Rinnai RL94iP has some outstanding features that stand it apart from other tankless water heaters.

Control error code/heavy duty forged brass web stone isolator service valves

This feature helps you detect on time when something is not quiet right with the unit. The error code helps you fix the problem before a major breakdown could occur. The inclusion of service valves saves you the extra cost of buying these valves separately.

Direct power vents/no foul smell

A coaxial pipe carries both the exhaust and fresh air in a single unit. This eliminates the chance of using air from the exhaust to burn and cool down the exhaust gas. This feature ensures that you have a clean air in the home. Since it is a closed system the exhaust/intake vents are not letting cold/warm air in when the unit is off.

No standing heat loss

Rinnai RL94iP comes highly quipped to supply endless hot water at a consistent temperature irrespective of the number of faucets you turn on simultaneously. There is absolutely no heat loss witness while using this unit.

Cost effective

Rinnai RL94iP is a great energy saving device which is as high as 40%. Cost of running this unit greatly reduces during winter. There is a very significant reduction in fuel consumption at this time. Being a highly modulated device it allows for less level of propane which is enhanced by its low flow rate.

Highly Durable

It comes with a high warranty of about 12 years on heat exchanger, 5 years on parts and one year labor for residential installation. It has the ability to last up to 30 years with proper maintenance culture. You are spared from the need of constant replacement and its attendant cost.

Despite the above positive traits, Rinnai RL94iP has few short comings

It is quite sensitive and can break easily. So, extra care is need when handling the device especially during installation and repairs. That’s why Rinnai advocates for the use of their professional technician during this process.

Cold Water Sandwich

It takes about a second to power on, resulting in intermittent run of cold water and water especially when two faucets are on. This lasts up to 40 seconds before stabilizing.


When you add the cost of buying the device and of using a professional technician for installation plus the cost of buying 3/4 inches gas line, Rinnai RL9iP ends of expensive.


Going by the positive assertion from satisfied users and with over 65% 5 star rating against 12% 4 star rating, one can safely recommend Rinnai RL94iP propane powered tankless water heater to people who are looking for a water heater that is highly efficient during winter period.

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