Rinnai Tankless Water Heater Installation

rinnai tankless water heater installation

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You may be wondering if it’s worth upgrading your water heater to a Rinnai tankless water heater system?

According to the United States Department of Energy, despite being more expensive than a storage heater or heat pump, a tankless water heater saves more energy over time.

With this, deciding to install a tankless water heater can be a bit difficult.

Here we’ve listed the pros and cons to help you.

The pros include water savings, constant heat, and smaller size.

Over 27 million homes in America have at least one water heater which is over 10 years old.

This is proof of the durability of this critical household equipment.

A tankless water heater is better managed when it fails because it is linked directly to the water supply line.

providing hot water when needed through a gas burner or electric element with no storage tank.

Other advantages of Rinnai tankless water heaters are as follows.

Reduced energy bills

Calculating typical home water usage, the United States Geological Survey notes that a water-saving showerhead provides about 2 gallons of water per minute, as against 5 gallons per minute from a regular showerhead.

Also, an EnergyStar dishwasher consumes about 6 gallons of water per wash cycle, while about 25 gallons of water per load is consumed by a clothes washer.

A Rinnai tankless water heater can save you more energy about 24%-34%, ultimately saving $80-$100 yearly.

The reason for this is that it only heats water when needed.

With a 20-80 gallon reservoir of a regular water heater, the hot water has to be reheated after it has cooled from not being used, regardless of the insulation of the tank.

The result of this is known as standby energy loss.

Smaller footprint

If you have seen a cylindrical tank from a regular water heater or heat pump in the basement, garage, or kitchen, you would be shocked at how large these shiny gray boxes are. A tankless heater has such functional design that goes unnoticed in any space.

Hot water on demand

Due to the absence of a reservoir, a tankless water heater can heat water immediately you turn on the shower, sink, or other faucet – up to 10 gallons in a minute.

Remote connection

Some tankless heaters can be set as a “smart home” feature since they link to an app.

You can save some energy when you’re out, and then turn it on when you get back.


Thanks to parts which are easy to replace, Rinnai tankless water heaters can last up to 20 years.

The cons include its high purchase and installation costs, with particular whims.

Purchase price

The price of purchase will vary based on the features and fuel type of the water heater, but generally, Rinnai tankless water heaters are more expensive than regular heaters.

Cost of installation

This equipment has to be installed by an expert plumber.

According to HomeAdvisor.com, the national average cost for this is $2,000.

Other retrofitting may require a vent for rerouting or exhaust piping.

There may also be a fee for the disposal of the existing heating unit.

Initially, cost will prevail over savings.

Apart from the allure for possible buyers, you’ll likely need a new water heater system before your initial expense is compensated by the tankless heater’s energy savings.

Conflicting temperatures and limited output

This is subject to the flow rate of your fixtures, and also the capacity of your water heater.

Some models, like the RU199 from Rinnai, can supply up to five distinct fixtures at once.

(Note: we advise setting the temperature of a tankless heater under 120 degrees Fahrenheit.)

Information on sizing and “temperature rise” is made available by manufacturer.

(This will enable you determine the right unit for your entire household.)

Alternatively, you can install multiple “point of use” or single-point systems for specific independent equipments.

(The under-the-counter model earlier mentioned is great for a bathroom sink which usually runs cold.)

Power outage dependability

Rinnai tankless water heaters have a control panel which is powered by electricity.

As the power goes out, so does its “brain”. This means that it won’t work in times of an emergency.

If hard water is present, you should have a softener. This helps prevent build-up of calcium.

(Models such as the RU199 from Rinnai will shut down if mineral build-up is detected.)

What are the preferred brands or varieties of tankless water heaters?

Depending on its features and fuel type, gas models cost about $1,000-$2,000.

Some recommended and popular brands include Rinnai, Navien and Bradford White, to name a few.

Resale potential

What is the perception of buyers towards a tankless water heater?

If you are pleased with the benefits of a tankless heater, such as its energy savings – and you don’t intend to move anytime soon – getting one for your home could give it an edge as time goes on, particularly with buyers who have an interest in “smart home” and energy conservation features.

Rinnai tankless water heaters won’t boost your sales value, but it’ll help your home sell better.

Nonetheless, buyers will always want to make sure your water heater is functioning properly.

If yours is approaching the end of its useful life, try offering a home warranty to possible buyers.

Please read our article on Navien tankless water heaters next.

Call us at (559) 940-0890

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