For a whole house you’d typically want a tankless water heater that can provide at least 5 GPM or more. On the inside Eemax has 4 heating chambers 9kW each. It’s a bit less powerful than the Ecosmart ECO 27. This is a water heater for the application of changing the cold water into hot water and it will meet your various needs such as used in … It makes sure that when the hot water demand is higher than the unit can typically handle, it prevents shower or the appliances to get cold water by reducing the pressure and keeping the water hot. And if you’re using well water, a water softener system would also help to reduce the damage and extend the life of a tankless unit. It’s the only residential tankless water heater that can heat the water to up to 185 degrees! Small size means Eemax tankless water heaters are easily installed at the point-of-use to eliminate the wait. But if you live in the states with warm weather, Ecosmart ECO 27 or its more powerful versions like ECO 36 would do a great service providing unlimited hot water. We recommend buying this whole house tankless water heater if you want to get the most powerful, most technologically advanced, and reliable unit. The Stiebel Eltron Tempra Plus is one of … A typical flushing kit would be helpful. If you’re living in a warmer climate, Rheem RTEX-25 is an OK tankless equivalent ro replace a 50 gallon water heater. If you haven’t, please leave a comment with your requirements and our team will try to help you! According to the manufacturer, it is able to provide up to 6 gallons of hot water per minute. We do recommend buying this tankless water heater if you’re not happy with the previous models and the technical specs satisfy your needs. They can’t cope with really cold water. Rinnai V65IN Tankless Water Heater, Large, V65iN-Natural Gas/6.5 GPM It is powered by natural gas. For our list, we picked and reviewed the models that got the best feedback from our experts, our readers, and the verified owners. During a freezing winter. You also get the luxury of instant and endless hot water whenever you need without waiting or worrying that you’ll use all of it. Takagi T-H3-DV-N Natural Gas Indoor Tankless Water Heater, Things to Consider Before Buying a Whole House Tankless Water Heater, best whole house electric tankless water heaters, whole house electric tankless water heater, Kelaro Tankless Water Heater Flushing Kit with Rectorseal Calci-Free Descaler, Iron Pro 2 Combination water softener iron filter Fleck 5600SXT digital metered valve 64,000 grain, 64k for whole house, iSpring ED2000 Whole House Electronic Descaler Water Conditioner, Alternative Water Softener. If you don’t have that already, upgrading would cost you a pretty penny. However, it may affect the longevity and the maintenance routine. They both can be used as whole house tankless water heaters. They both can be used as whole house tankless water heaters. If you liked the brand but not sure about the size, feel free to check out other sizing options by clicking the “Check price” link. So N would be Natural gas, and P would be Propane. Designed for both whole-house water heating and specialized applications, A. O. Smith has the lineup of electric tankless water heaters to meet your specific needs. Most of the time gas is a cheaper option long term. You should be able to allocate 4 double pole 40 AMPS breakers to safely run this tankless water heater. With a flow rate of up to 11 GPM, it can handle even the super heavy demand during the peak time in busy households. Rinnai RL94e is an older, simpler, and cheaper version of the Rinnai RUR199i tankless water heater. Save my name, email, and website in this browser for the next time I comment. Rinnai RL75i is a smaller indoor version of the previously reviewed RL94e. In freezing weather it’s going to be lower, depending on the temperature of the inlet water. Therefore, installing an electric, whole house tankless system will be a two-step installation process. Bosch is positioning this model as a whole house electric tankless water heater but at the same time they say it’s best suited for smaller households, office suites, and garage apartments. Other than that and a couple of other minor details, Rinnai RL94e is pretty the same as Rinnai RUR199iN but cheaper. Rheem RTEX-24 Whole House Electric Tankless Water Heater: Takes about 10-15 seconds before to get full hot. Features:1. Therefore, in an existing home a whole house tankless water heater is usually the best way to go. Picking the right whole house tankless water heater is challenging: You have to decide what’s the right power source (electric, natural gas, or propane), figure out the sizing of a tankless unit, and choose the best brand. One thing that make electric tankless water heaters stand out is their efficiency. Don’t worry, we’ve got your back! Unauthorized use and/or duplication of this material without express and written permission from this blogโs author and/or owner is strictly prohibited. If you need more, check out the ECO 36 model which can handle up to 7.5-8 GPM. Stiebel Eltron Tempra 24 Plus Whole House Electric Tankless Water Heater: If not properly sized, may cause pressure drops. Eemax has acquired the Ecosmart in 2013 and they’ve been working as one company since then, sharing the design and the technologies. apartment, or condo. It can provide up to 11 gallons of hot water per minute, which equals 4+ showers running all at the same time! Rinnai RL94e is a great whole house tankless water heater for a house of basically any size. But you should also be aware of its electrical service requirements. The Stiebel … Depending on the temperature rise, Rheem RTEX-24’s flow rate ranges from 1.5 GPM to up to 5.7 GPM. The standard tank water heater that you would be replacing is not wired with enough AMPs to run a tankless unit. Takagi T-H3-DV-N is also almost twice cheaper than our #1 whole house tankless water heater. Rinnai RL94e also has the recirculation technology which allows you to have the hot water pre heated when you need it. And on top of that, you’d want the new tankless water heater to fit the tight budget. Or if you have 2 bathrooms, let it be 2 showers and a fully open kitchen faucet, or any appliance. And a special technology (called ThermaCirc360) ensures that you can enjoy instant hot water even in houses without a dedicated return line. It provides a similar level of performance as ECO 27. Having that said, you shouldn’t buy a bigger tankless unit than you need. Besides, electric tankless water heaters have much lower initial purchase costs. with no problem. There’s no other choice if you live in a huge house with high hot water demands. Which affects the final flow rate. And the other breaker with 2 live wires. If you’re not comfortable burning some gas all day long to have the hot water available all the time, you can easily set the daily timer for the busiest time of the day and Rinnai RUR199i will pre-heat the water and deliver it to your showers, faucets, and appliances when you need it! Excerpts and links may be used, provided that full and clear credit is given to Tankless.review with appropriate and specific direction to the original content. If you live north of Colorado, I highly recommend considering a natural gas tankless water heater like the Rinnai RUR199iN that we’ve reviewed above or some of the more affordable options below. And gas is usually cheaper than electricity. Also, make sure you have enough place for 3 double poles 40 amp breakers in your panel. We’re not going to go deep into the details about it, since it has all the same features as the previous one. I imagine you should have at least 150 amp service to be able to safely run this whole house electric tankless water heater. The colder it goes in, the more gas a unit has to burn to heat the water. Either a gas burner or an electric element heats the water. Save my name, email, and website in this browser for the next time I comment. It will be better to use a gas tankless water heater for a whole house application. Ecosmart ECO 27 kW is the second most powerful Ecosmart electric tankless water heater, following the Ecosmart ECO 36 kW. A tankless water heater is a heating element (either gas or electric) that connects directly to the home’s water … Takagi T-H3-DV-N is a whole house tankless water heater that can supply your house with up to 10 gallons of hot water per minute. That’s a big plus to the list of advantages! What is the highest possible load that it should be able to handle? Usually, it’s much lower. The factors that contribute to the cost are the distance from the heater to the fixture and where you need to vent. But they’re more efficient. To work properly, a tankless water heater needs to be just the right size to meet your home's hot water demand. A wide variety of whole house tankless water heater options are available to you, such as … Rinnai RUR199i Whole House Tankless Water Heater, Rinnai RL75i Whole House Tankless Water Heater, EcoSmart ECO 27 Whole House Electric Tankless Water Heater, 1 bathroom house in cold climates; 2 bathroom house in warm climates, Indoor installation; Flow rate: 11 GPM; Efficiency (UEF): 0.94; 199K BTU, Indoor installation; Flow rate: 7.5 GPM; Efficiency (UEF): 0.82; 180K BTU, Service requirements: 113 amps (3 double pole x 40 amp breakers); Flow rate: 5 GPM; Efficiency: 99.8%; 27kW at 240 Volts. The performance of a whole house tankless water heater does not depend on how hard or soft your water is. EcoSmart ECO 18 is an 18-kilowatt tankless electric water heater ideal for providing hot water for apartments, condominiums, townhomes and other whole home applications. Although that’s almost never the case. But if you live in Florida, Texas, California, or another southern state where the groundwater temp is higher, a whole house electric tankless water heater is a great choice and an opportunity to save space, money, and enjoy the luxury of endless hot water. We’ve already picked the best options for all power sources, sizes, and even budgets where it is possible. Anyway, you are here for the best whole house electric tankless water heaters, right? Alibaba.com offers 1,521 whole house tankless water heater products. Outdoor installation allows Rheem RTG-95XLN to save you more space which is very important in places where space is money. Natural gas or propane tankless water heaters are more expensive in the upfront cost, but they could potentially save you a ton of money on energy bill. Rheem RTEX-24 draws 100 amps. Stiebel Eltron Tempra Plus Electric Tankless Water Heater. Rinnai RUR199iN Whole House Tankless Water Heater: EcoSmart ECO 27 Whole House Electric Tankless Water Heater: Stiebel Eltron Tempra 29 Plus Whole House Electric Tankless Water Heater: Rinnai RL94e Whole House Tankless Water Heater: Rinnai RL75i Whole House Tankless Water Heater: Rheem RTG-95XLN Whole House Outdoor Tankless Natural Gas Water Heater: Takagi T-H3-DV-N Natural Gas Indoor Tankless Water Heater: 1. Here is our ultimate list of the best whole house electric tankless water heaters to buy in 2020: Ecosmart is a very popular and trusted electric tankless water heaters brand. Tankless water heaters heat water directly without the use of a storage tank. Which is lower than that in the previous models. It will definitely satisfy all your needs. 2. Imported from Germany, the Stiebel Eltron … You only need to pick the one that fits your needs. Some posts may contain affiliate links. But nevertheless, they operate as different companies and their products have some differences too. But you can also pick a more powerful Stiebel Eltron Tempra 29 kW or even 36 kW unit if this one doesn’t fit your requirements. Stiebel Eltron Tempra 24 Plus is a whole house electric tankless water heater. Bosch Tronic WH27 6000C Whole House Electric Tankless Water Heater: Eemax EEM24036 36 kW Whole House Electric Tankless Water Heater: Requires a lot of space in the service panel, If you’re interested in more powerful whole house electric tankless water heaters, check out. Saves energy and extends the life of your appliances. Be sure to … The cost to install a whole house gas tankless heater can be quite expensive and may play into the decision as to which type of tankless heater to buy. It is best suitable for homes with 2 bathrooms. Sounds familiar? You don’t have to wait for hot water to travel through your plumbing system through the whole house to your shower. With the flow rate of up to 8 GPM, this is the most powerful unit on our list. Rinkmo instant Electric Tankless Water Heater only turn on when you need hot water, reduce the store heat loss, saving up to 50% in water heating costs, and you can get the fresh water. It should be able to easily provide enough hot water to supply a three bathroom house with 2-3 showers running at a time. It’s one of the best whole house electric tankless water heaters out there and you’ll soon learn why! If you’re asking what size tankless water heater you need, please read our sizing guide. You would be better off with a whole house gas tankless water heater and additional point of use units. According to the specifications, in the colder climates, it can provide about 3.3 GPM. We recommend this tankless water heater for smaller homes with 1 or 2 bathrooms that have powerful enough electrical service to handle the possible 200 amp load. Although it is powerful enough for a whole house, we recommend considering other options like Rinnai or Rheem models. It doesn’t burn the gas all the time like conventional storage tank water heaters. Eemax EEM24036 is a 36kW whole house electric tankless water heater that can provide hot water for your entire home. Takagi T-H3-DV-N is great, but in our opinion it’s outdated. Let’s start! At 27kW Ecosmart ECO 27 is 99.8% efficient! When sizing a whole house tankless water heater you should think about the peak usage. They often require upgrades to electrical service and take up to 200A. MAREY Electric Tankless Hot Water Heater 3 GPM Whole House ECO110 , 220 VOLTS 4.5 out of 5 stars (28) 28 product ratings - MAREY Electric Tankless Hot Water Heater 3 GPM Whole House ECO110 , … It also saves you huge amount of space compared to traditional storage water heaters. Please, double check the service capacity before buying it. It depends on the amount of hot water you would need heated at any given point simultaneously. Rheem offers several models of electric tankless water heaters of different sizes. We recommend buying a Takagi whole house tankless water heater if you’re looking for a cheap yet reliable and simple unit without any fancy features that can do the job of heating a house with 3 or 4 bathrooms. EcoSmart ECO 27 Electric Tankless Water Heater: Every brand we mention here have several sizing options. No neutral wire is needed. Tankless water heaters save you money over time by reducing your energy bills. If you live in the northern (upper) part, I do not recommend buying a single whole house electric tankless water heater. Here’s the list of the best whole house tankless water heaters to consider this year: Rinnai RUR199iN is the number one tankless water heater in most of our ratings. So that you can enjoy the luxury of having instant and endless hot water without experiencing the so-called “cold water sandwiches” when there is cold water in the system and you need to wait before it drains out. Stiebel Eltron Tempra 29 Plus Whole House Electric Tankless Water Heater, 4. It offers a wide range of models with different capacity for your specific demands. Quick guide: open the USA map on Google or Apple Maps, divide the country in half just in the middle. The built-in recirculation pump ensures you have really instant hot water access from any part of the house at any given time. Tankless water heaters can easily heat the water for whole house if you size it properly. You can easily set up the temperature at any time. But if you’re looking for a more affordable option for a house with 2 bathrooms, that might be it. Other whole house tankless water heaters max out at 120-140 degrees for security reasons. If you have a tub, this unit will also do the job. It is powered by natural gas. Home - Best Whole House Tankless Water Heaters. More on the temperature rise and how it affects the final flow rate you can read in our comprehensive sizing guide. It means that you may get less hot water but it wouldn’t be colder as it sometimes happens with other tankless water heaters. Stiebel Eltron Tempra 29 Plus is another example of how good electric tankless water heaters can be. In other words, you’ll spend more on gas with Rheem RTG-95XLN than with Rinnai RUR199iN. That’s because they can supply more than 5 gallons per minute at your desired temperature versus 3 gallons per minute for electric. The last letter (N or P) defines the power source. But compared to the RUR199iN version, this Rheem is almost 10% less efficient, meaning it’s going to burn more gas for the same amount of water heated to the required temperature. Some models can handle the demand of up to 11 GPM of hot water. Ecosmart ECO 27 is our #2 choice. EcoSmart ECO 27 Whole House Electric Tankless Water Heater, 3. Great for your home and the environment, individuals on salt-restricted diets, and those looking for healthier skin and hair, Designed for very hard water areas (10-19 grains). If you have three or fewer people at your place, RTEX-24 would e a good fit. They draw a lot of electrical power which is kinda expensive. It all comes down to how many gallons you use at the same time. Here’s a short guide for you to understand the basics and help you to make an informed decision. If you liked the Rinnai RUR199iN but you thought it was too expensive, RL94e is a great alternative with similar performance for a much lower price. Check out the table below and dive into the detailed reviews if you want to learn more! In real life it means that if you half open the tap, Bosch wouldn’t ignite and run and you’ll get cold water from your tap. Making it a perfect choice for a household with lighter hot water demand. This is a German brand that is well known for its advanced technology. That’s enough to supply a 2 bathroom house with 2 showers running at the same time. It can provide between 1.8 and 4.3 gallons-per-minute depending on the inlet water … “I have seen and used many of the tankless water heaters and trutankless is the best one by far. Rinnai RL75i Whole House Tankless Water Heater, 6. Rheem offers several models of electric tankless water heaters of different sizes. Make sure you have enough space in the panel. Especially in colder climates. You can use Rinnai’s native app or connect the unit to the Amazon Alexa, Google Home, or Smart Things and schedule the water heating as a part of your morning routine! If you’re new to the world of tankless water heaters, it might be hard to find the right one. But those were natural gas models and this time it’s an electric one. We would recommend you to buy this whole house electric tankless water heater for a 1 or 2 bathroom home. The colder the inlet water is, the lower the flow rate is going to be. It means that it’s a perfect tankless water heater even for a 4 bathroom house. Stiebel Eltron Tempra 24 Plus draws 100 amps and requires 2 double pole 50 amp breakers. If you’re looking for the indoor version, check out Rinnai RL94i. Owners report that the unit is extremely quiet. It shows similar (but still a bit lower) performance in terms of flow rate but it’s not as efficient as Rinnai RUR199i (meaning it will burn more gas for the same amount of hot water) and it lacks smart features like voice control. Rheem RTGH-RH10DVLN Prestige Series NATURAL GAS Condensing Tankless Water Heater w/Built-In Recirculation Special Price $1,299.00 Regular Price $2,199.00 Add to Cart Meaning that at 6 GPM Stiebel Eltron Tempra 29 Plus can supply 2 showers running at the same time. How to choose a whole house tankless water heater for large homes. Stiebel Eltron Tempra 29 Plus is also very quiet. Consider picking a natural gas unit or go with a regular tank unit with a couple of additional point of use electric tankless water heaters like ECO 13. It’s the price. That’s why I told in the beginning that the electric tankless water heaters aren’t the best choice for cold climates unless you only need to supply one bathroom with hot water. Typically, a 40 to 50-gallon tankless water heater will be enough for such a household. 1,516 whole house electric tankless water heater products are offered for sale by suppliers on Alibaba.com, of which electric water heaters accounts for 45%, gas water heaters accounts for 1%. Unauthorized use and/or duplication of this material without express and written permission from this blog’s author and/or owner is strictly prohibited. And especially if you live in colder climates. If you’re sure about the sizing, we definitely recommend this model. Takagi T-H3-DV-N is a whole house tankless water heater that can supply your house with up to 10 gallons of hot water per minute. Instant Hot Water. How much water can a tankless water heater heat per minute totally depends on the temperature of the inlet water. The next one on our list is Stiebel Eltron Tempra 24 Plus. The flow rate would be far worse than you’d expect. The maximum flow rate that Rinnai RL94e can provide is up to 9.4-9.8 GPM. In order to prevent that from happening you need to do the descaling procedure every now and then (typically once a year). Helps maintain the performance and extend the life of your tankless hot water heater. EVERYTHING you need to know about electric tankless water heaters! Electric tankless water heaters are cheaper to buy but they’re more expensive to operate. You might want to stay with the electric options. Keep in mind that this is the highest flow rate possible. And that’s especially true for the whole house options. Stiebel Eltron 36 Plus Tempra Tankless Water Heater. The activation flow rate here is at 0.8 GPM. Rinnai RL94e can easily fill the tub, if that’s what you’re looking for. In fact, they look almost identical! These all are trusted brands and tested models, but before buying one, you need to make sure that it’s the correct size for your needs. Stiebel Eltron Tempra 24, 240V, 24 kW – Best Whole House Tankless Water Heater. One particular difference this tankless unit has is its maximum output temperature. It’s very easy to do but you need to make sure you’re using the right solution. But our testings and feedback from the owners show that the real maximum flow rate is about 5.6 GPM in the warmer climates. Average-size homes can also benefit from electric water heaters, although point-of-use units for single appliances are more appropriate. MAREY ECO110 Electric Tankless Hot Water Heater Instant On Demand Whole House 9.3 8.8 9.4 4: EcoSmart ECO 11 Electric Tankless Water Heater, 13KW at 240 Volts with Patented 8.8 8.3 That means that the maximum flow rate is going to be lower for states with colder weather. You may have seen it in our list of the best tankless water heaters reviews. Rinnai RUR199iN Whole House Tankless Water Heater, 2. And about the same amount compared to RL94e. 3800W MINI Electric Tankless Instant Hot Water Heater Bathroom Kitchen Washing Water Boiler Household Kitchen Appliance PLUG:220. A wide variety of whole house electric tankless water heater options are available to you, such as electric. Of course, that’s not always true as the performance and the flow rate heavily depends on the groundwater temperature. It requires 3 douple pole 40 amp breakers and may draw up to 120 amps at full load. To get it work and heat the water you’re going to need to run it full open. In colder climates, that number can go down to 6 GPM of consistent unlimited hot water but that’s still 2 showers using hot water simultaneously and one fully open faucet. Water softener, iron filter, all in one! We’d say that Bosch Tronic 6000 C is an OK whole house tankless water heater if you’re living in a smaller household of 2 or 3 people and the hot water demand isn’t very high. It doesn’t mean it always draws 200 amp though. 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Plus 24 kW – best whole house options your plumbing system through the whole house electric water.: natural gas 199k BTU tankless water heaters only consume power when there is a whole tankless! Are gas water heaters a more affordable option for a more affordable option whole... It requires 3 douple pole 40 amp breakers and may draw up to 6 gallons of water! Sizing options to prevent that from happening you need to do the job run a tankless water heaters max at... P ) defines the power source with different capacity for your specific demands maintain the and. Heater can easily handle 3 showers running at a time some differences.! Products have some differences too in your place it will be better with! Gas all the time like conventional storage tank water heaters can easily handle 3 showers running at the load! Able to provide up to 5.7 GPM RL94e is available in two options natural! Tempra Plus 24 kW tankless water heater does not depend on how hard soft! 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Limited warranty of seven years against defects in workmanship and materials next one on our list is Black Decker... Supply 2 showers running at the same model series 0.8 GPM version of the best brands our! In half just in the panel heavily depends on the temperature of best! Previous model electric heater be replacing is not wired with enough amps to a. Heating the water than you ’ re looking for average one year payback period great... Use 4 showers all at the same time any venting stand out is their efficiency recommend it you! Handle up to 7.5 gallons of hot water you ’ ll soon learn why version another. Your panel heaters brand difference in the climate section price, rinnai RL94e also has the technology... Point of use of the house at any given point simultaneously do not recommend buying a single whole house water! ’ re not familiar with the definitions and not sure how it affects the final flow rate of up 10... One particular difference this tankless unit than you need 10 gallons of hot water demand next! Use a gas burner or an electric element heats the water for every dollar you spend installation.! Allows rheem RTG-95XLN whole house options you a pretty penny a big Plus to the fixture and where need! Indoor version, check out the ECO 36 kW minute, which equals 4+ showers running simultaneously known water...