Tankless units are complicated. Rinnai Tankless Water Heaters require 120 volts AC, 60 Hz and less than three amps. (The alternative is to use an electric water heater.) The flow sensor activates to determine the amount of hot water needed. Even though the water heater uses natural gas as its primary fuel, some models do indeed use electricity to get the pilot light burning. 4. Most gas heaters provide you with at least 8 gallons of hot water per minute — expressed as 8 GPM. In fact, a tankless unit. The average home has a total capacity of 200 amps, which means an upgrade would be needed. When it comes to high efficiency tankless water heaters, no one comes close to matching the expertise and innovation of A. O. Smith. Signature Select 8-GPM Outdoor Natural Gas Tankless Water Heater. The gas control valve opens to supply the correct amount of gas. As mentioned before, there are two types of venting systems used on tankless water heaters: power … This model in particular is for a whole-house application with your standard 4 bedroom/2 bath or larger residences, or in radiant heating applications. If you’re living in a cold climate and the hot water demand is high, I personally wouldn’t recommend buying a whole house electric tankless water heater vs a natural gas tankless water heater.It’s hard for an electric unit to keep up during the cold winters when the temperature drops below freezing. What are the power supply requirements for a Rinnai Tankless Water Heater? RINNAI strongly suggests that you only purchase our products from RINNAI Independent Dealers and that you have the products installed only by licensed professionals who have attended a RINNAI installation training class. All models require 120 V AC 60 Hz and draw less than 2 Amps. For a household of one or two people, a tankless electric unit will probably be adequate. Once you close the hot water tap, the unit senses that the flow of water has stopped and shuts off the heating element. Propane heaters can provide as much as 11 GPM and natural gas as much as 10.6 GPM. service contractor, I'm When a hot water tap is opened, the tankless water heater detects the flow. The higher the energy factor, the more efficient the water heater. Gas tankless water heaters can use indoor or outdoor air for combustion, and the exhaust gases must freely travel to the outside atmosphere, with no obstructions and leaks. Gas water heaters are available in two categories – storage water heaters and tankless water heaters. Rinnai tankless water heaters are not UL certified, but are certified by CSA International to ANSI Z21.10.3 Standard Gas Water Heaters, Volume III, Storage Water Heaters with Input Ratings Above 75,000 Btu/h. The higher the energy factor, the more efficient the water heater. Installation. Tankless units have an average lifespan about twice that of conventional water heaters — 20 years or more. What Type Of Water Heater Is Right For You? Simply locate the appropriate water heater sizes on eComfort using your information. For example, a 200,000 BTU gas-fired tankless unit is able to raise the total water temperature 50 F at a maximum of 7.4 GPM. Rinnai RU199 Sensei SE Tankless Hot Water Heater. Gas units also require a safe ventilation system, while electric units do not. If you live in a multi-person household, compare tankless models, paying particular attention to the gallons per minute (GPM) flow of each model. Unlike conventional water heaters, there is no backup hot water source during these emergency situations. Gas Line Sizing Table; Can a Rinnai Tankless Water Heater be converted to a different gas type? They can help you save on your energy costs. Tankless water heaters are ventilated in two ways: power vent and direct vent. a real estate professional, The Pros and Cons of Tankless Water Heaters, How to Maintain Your Water Heater to Save You Money in the Long Run, According to the U.S. Department of Energy, Don’t Call The Plumber Just Yet: A Guide To Water Heater Maintenance, American Home Shield® Water Heater Home Warranty, 3 Most Common Reasons for Noisy Water Pipes, 5 Home Maintenance Tasks You're Probably Forgetting to Do, Don’t Call The Plumber Just Yet: 9 Ways to Unclog a Kitchen Sink Drain, 7 Common Oven Problems and How to Fix Them, How to Drain Your Water Heater and Lengthen Its Life, 6 Early-Warning Signs From Your Electric Water Heater, Make Your Dream of Instant Hot Water in Your Home a Reality. Cold water passes through the heat exchanger Electric tankless water heaters are cheaper than the gas versions. Tankless units are more expensive. Item #2844629. Typically, hot water flows from a tankless heater at the rate of 2-5 gallons per minute, and that may not be enough for several simultaneous uses of hot water in your household. And usually, it’s between 30 to 150 psi. Shop tankless gas water heaters and a variety of plumbing products online at Lowes.com. Below, we've highlighted what size water heater you would need in our example of 6.5 GPM at a 63° F temperature rise. One solution is to install multiple tankless units to meet the demands of a large household, but that can become very expensive. Model #GA14CSANG. The burner ignites providing a flame to heat the water. Talk to a PRO to learn more or schedule an installation, Register your unit to ensure the reliability of your product, Speak with a Customer Care agent to ask a question or give us feedback, Copyright 2020, Rinnai America Corporation. Smith. Item #1061596. This extra load requires at least 120 amps. 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