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Rinnai Tankless Water Heaters

Rinnai Tankless Water Heaters

Rinnai Tankless Water Heaters: Energy-Efficient and Endless Hot Water

When it comes to hot water supply in our homes, efficiency and convenience are key factors to consider. Traditional water heaters with tanks can be bulky, inefficient, and may not always meet the demands of modern households. However, Rinnai tankless water heaters have revolutionized the way we experience hot water. In this article, we will explore the benefits and features of Rinnai tankless water heaters, and why they are an excellent choice for energy-conscious homeowners.

$600 Federal Tax Credit on Tankless Water Heaters!

Beginning 2023, the expanded version of 25C, now called the Energy Efficient Home Improvement Tax Credit (under the Inflation Reduction Act of 2022), provides a maximum credit of $1,200 annually for most taxpayers. It is $600 for any single energy property item (including Tankless Water Heaters and Boilers)…Learn More

Our AVERAGE Tankless Water Heater Price:

$ 5500

*Click to view our average price details. 

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Benefits of Tankless Water Heaters

Energy Efficiency

One of the significant advantages of Rinnai tankless water heaters is their exceptional energy efficiency. Unlike traditional tank-based systems that constantly heat and store water, tankless water heaters only heat water on-demand. This on-demand heating mechanism eliminates the standby heat loss associated with storage tanks, resulting in substantial energy savings. By switching to a Rinnai tankless water heater, homeowners can significantly reduce their utility bills while minimizing their carbon footprint.

Space-Saving Design

Traditional water heaters with tanks can take up a significant amount of space in basements or utility rooms. Rinnai tankless water heaters, on the other hand, are compact and wall-mounted, saving valuable floor space. The space-saving design allows for more flexibility in terms of installation locations, making them an ideal choice for homes with limited space.

Endless Hot Water

Running out of hot water in the middle of a shower or while doing laundry can be frustrating. With Rinnai tankless water heaters, you can enjoy endless hot water supply. These units heat water as it flows through, providing a continuous and uninterrupted stream of hot water whenever you need it. Say goodbye to cold showers and hello to comfort and convenience.

Longer Lifespan

Rinnai tankless water heaters are built to last. Compared to traditional tank-based systems that typically last around 10-15 years, Rinnai tankless water heaters have an average lifespan of 20 years or more. With proper maintenance and care, these units can provide reliable hot water for decades, saving homeowners the cost and hassle of frequent replacements.

Reduced Risk of Water Damage

Traditional water heaters with tanks can develop leaks over time, leading to water damage and expensive repairs. Rinnai tankless water heaters eliminate the risk of tank leaks since there is no stored water. By opting for a tankless system, homeowners can have peace of mind knowing that their property is protected from potential water damage.

How Do Rinnai Tankless Water Heaters Work?

Rinnai tankless water heaters utilize advanced technology to provide an efficient and consistent supply of hot water. Here is an overview of their functioning:

Flow Sensor Activation

When a hot water tap is opened in the house, a sensor detects the flow and signals the tankless water heater to activate. This flow sensor activation ensures that hot water is produced only when needed, reducing energy waste.

Heating Process

As the water flows through the tankless unit, a heat exchanger rapidly heats the water to the desired temperature. Rinnai tankless water heaters utilize either gas burners or electric elements to heat the water, depending on the model and fuel type.

Temperature Control

Rinnai tankless water heaters offer precise temperature control, allowing users to set their preferred hot water temperature. With digital controllers and user-friendly interfaces, adjusting the temperature to meet individual preferences has never been easier.

Choosing the Right Rinnai Tankless Water Heater for Your Home

Selecting the appropriate Rinnai tankless water heater for your home requires careful consideration of several factors. Here are some essential points to keep in mind:

Consider Your Hot Water Needs

Assess your household’s hot water demands to determine the appropriate flow rate and capacity required. Factors such as the number of bathrooms, appliances, and simultaneous hot water usage should be taken into account.

Sizing the Unit

Properly sizing the tankless water heater is crucial to ensure optimal performance. Rinnai offers a range of models with varying flow rates and capacities. Consulting with a professional plumber can help you determine the right unit size for your specific needs.

Fuel Type Options

Rinnai tankless water heaters are available in both gas-fired and electric models. Consider the availability and cost of fuel in your area, as well as any specific requirements or restrictions related to installation.

Professional Installation

To maximize the benefits of your Rinnai tankless water heater, professional installation is recommended. Certified plumbers have the expertise to ensure proper sizing, safe installation, and compliance with local building codes.

Installation and Maintenance of Rinnai Tankless Water Heaters

Location Considerations

When selecting a location for your Rinnai tankless water heater, it is essential to consider proximity to gas or electrical connections, ventilation requirements, and access for maintenance. Consult the installation manual provided by Rinnai for specific guidelines.

Venting Requirements

Gas-powered Rinnai tankless water heaters require proper venting to remove combustion byproducts safely. Venting options include direct venting, sidewall venting, or using a dedicated venting system. Follow manufacturer instructions and local codes for correct venting installation.

Regular Maintenance

To ensure the longevity and optimal performance of your Rinnai tankless water heater, regular maintenance is essential. This includes descaling the heat exchanger, checking for any leaks, and cleaning or replacing filters as recommended by the manufacturer.

Everything You Could Ever Want to Know About Rinnai Tankless Water Heaters

Frequently Asked Questions

Rinnai tankless water heaters have an average lifespan of 20 years or more, outlasting traditional tank-based systems.

Depending on your location and applicable regulations, Rinnai tankless water heaters may qualify for rebates, incentives, or tax credits. Check with your local utility company or government agencies to explore potential savings opportunities.

Rinnai tankless water heaters are designed to handle various water conditions. However, in areas with hard water (high mineral content), it is recommended to install a water softener or a whole-house water treatment system to minimize scale buildup and prolong the lifespan of the unit.

Yes, Rinnai offers commercial-grade tankless water heaters specifically designed for commercial and industrial applications. These units provide efficient and reliable hot water solutions for businesses, hotels, restaurants, and other commercial settings.

Rinnai tankless water heaters operate quietly, especially compared to traditional tank-based systems. However, like any mechanical equipment, you may hear some noise during operation. The noise level is typically minimal and should not cause any significant disturbance.

Yes, proper ventilation is necessary for gas-powered Rinnai tankless water heaters. Ventilation removes combustion byproducts, such as carbon monoxide, from the unit. Follow the manufacturer’s guidelines and local building codes to ensure safe and correct venting installation.

Yes, Rinnai tankless water heaters can be integrated with solar water heating systems. The tankless unit can serve as a backup or booster to ensure a continuous supply of hot water during times when solar energy may be insufficient.

Rinnai offers limited warranty coverage for their tankless water heaters, typically ranging from 5 to 12 years, depending on the model and components. It is important to review the warranty terms and conditions provided by Rinnai for specific details and any necessary registration procedures.

Common maintenance items for a tank water heater include flushing sediment, testing and replacing the pressure relief valve, and inspecting and replacing the anode rod.
How long do tank type water heaters last? Tank type water heaters usually have a life expectancy between 10-15 years. (

It is possible to install a recirculating pump at the top of the water heater to allow hot water to travel through the plumbing pipes at certain intervals to minimize the waiting time to receive hot water.


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$4,369 average Rinnai Condensing Tankless Installation Price

a) Price includes 5% discount when paid with cash or check
b) Price is assuming gas supply line is adequately sized for tankless, an existing 110v electrical outlet is next to location of water heater for tankless cord to plug into, and no city permits or inspections (if applicable)
c) Flat Rate Price includes new Rinnai RU199 condensing tankless water heater, pan, water and flexible gas supply line connections, haul away of old tank style water heater, and taxes.
d) Warranty: 2 year warranty on labor against manufacturer defects, 5 year warranty on manufacturer parts, 15 year warranty on heat exchanger
e) Water Heater Location must be within reasonable access in attic; difficult access conditions that can potentially affect price include examples such as being placed directly behind air conditioner unit or locations without accessible walkway to water heater.