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The Stiebel Eltron Tankless Water Heater – Tempra 24 Plus is a robust option for homeowners looking for an electric solution to efficiently provide hot water on demand. With a flow rate of 4.0 GPM and the ability to maintain a temperature rise of up to 140°F, it can comfortably supply hot water for multiple outlets simultaneously, making it suitable for larger households. Its eco-friendly design incorporates advanced flow control technology, which adjusts the water flow to maintain a consistent temperature, ensuring that you won’t be left with a cold shower.
One of the standout features is its space-saving design. The unit is compact and does not require venting, which allows for flexible installation options. The digital display and preset temperature buttons make operation simple, even for those who may not be tech-savvy. Energy efficiency is a strong point, too, as the heater saves power through auto-modulation, and a savings monitor shows how much you’re saving on energy costs.
However, there are a few considerations to keep in mind. The Tempra 24 Plus requires a minimum electric service of 150 A, which may necessitate upgrades to your home's electrical system if it doesn't meet this requirement. Additionally, while the compact size is beneficial, it may not be suitable for very high-demand scenarios where multiple fixtures are used simultaneously at peak demand times. The warranty coverage is quite favorable, offering a 7-year leakage warranty and a 3-year parts warranty, which is reassuring for potential buyers. The Stiebel Eltron Tempra 24 Plus is a solid choice for those seeking an efficient and reliable tankless hot water heater that can provide endless hot water without the bulk of traditional systems.
The Rheem RTEX-24 is a solid choice for those looking to upgrade to a tankless electric hot water heater for their home. With a flow rate of up to 5.9 gallons per minute (GPM), it can efficiently provide hot water for multiple outlets simultaneously, making it great for medium-sized households. Its self-modulating power control ensures that you get just the right amount of energy needed for heating water, which contributes to its impressive energy efficiency rating of 99.8%. This means you can enjoy consistent, on-demand hot water without worrying too much about energy consumption.
One notable feature is its ON/OFF dial control paired with an adjustable digital temperature display, making it user-friendly. Installation is straightforward, as it is designed for wall mounting and comes with necessary fittings, although professional help might still be recommended for optimal setup. The compact size of the unit (17.63” W x 18.25” H) allows it to fit conveniently in smaller spaces.
While the flow rate is decent, it may struggle to meet the hot water demands of larger households with simultaneous usage in multiple bathrooms or kitchens. The 24 kW power requirement also means that proper electrical infrastructure is necessary; homes must have the right voltage and amperage to support this unit. Additionally, while the warranty coverage is decent, some users may prefer a longer guarantee for peace of mind.
The EcoSmart ECO 27 Tankless Water Heater is a solid choice for homeowners seeking a reliable and efficient hot water solution. One of its major strengths is its endless hot water supply, which means you won't run out even during peak usage times. It offers a flow rate between 2.7 to 6.5 gallons per minute depending on the inlet water temperature, making it suitable for whole-house applications. The unit is compact, taking up significantly less space than traditional tank heaters, allowing for flexible installation options.
Energy efficiency is another highlight, as it operates at 99% thermal energy efficiency. This means it heats water only when needed, which can lead to savings of up to 50% on water heating costs, according to the Department of Energy. The digital temperature control with increments of 1 degree offers users precise control over water temperature.
There are some considerations to keep in mind. The ECO 27 requires a significant electrical setup, needing three 40 AMP double pole breakers and a recommended 200 Amp electrical panel. This might involve additional upfront costs for installation if your home isn't already equipped for it. Additionally, the warranty, while limited lifetime on components, does not cover labor costs or incidental damages, which could be a drawback for some users. This heater is particularly suitable for families or households that require consistent hot water without the bulk of traditional storage heaters, but may not be ideal for those with limited electrical infrastructure.
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