Choosing the right exterior tankless water heater can be a daunting task. With a myriad of options available in the market, customers often find themselves overwhelmed and unsure about which product fits their needs the best. One of the biggest pain points customers face is determining the appropriate size and capacity for their home, which can lead to increased energy costs or insufficient hot water supply. This article will guide you through essential tips to make an informed choice.
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Before diving into features and specifications, it’s crucial to assess your household's hot water requirements. A common source of confusion is the difference between ‘flow rate’ and ‘temperature rise’. The flow rate is how many gallons per minute (GPM) the heater can supply, while the temperature rise is how much the heater can increase the incoming water temperature. For instance, if your incoming water temperature is 50°F and you need it to reach 120°F, the temperature rise needed is 70°F.
To determine the ideal flow rate, consider all hot water appliances you’ll be using at once. A typical shower uses about 2.5 GPM, while a washing machine may use around 3 GPM. If you plan to run two showers and a washing machine simultaneously, you’ll need a water heater with a flow rate of at least 8 GPM. Knowing this critical information upfront can save you from making a purchase that won’t meet your needs.
Exterior tankless water heaters come in various sizes and capacities. A common misconception is that larger units always mean better performance. However, a heater that is too large for your needs can lead to excessive energy consumption, resulting in higher bills. On the other hand, if the unit is too small, you may find yourself with lukewarm water during peak usage times.
Consider the case of a family in Denver, Colorado, who opted for a 7 GPM tankless water heater believing it would meet their needs. However, they regularly had simultaneous demands, including showers and running the dishwasher. After a few cold showers, they realized they should have chosen a unit with a higher capacity. Ultimately, they switched to a 12 GPM heater, significantly improving their hot water situation and reducing complaints from family members!
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Modern exterior tankless water heaters are often rated for their energy efficiency, typically displayed via the Energy Factor (EF) rating. An EF of 0.80 or higher means that the unit is efficient, translating to lower utility bills. Look for heaters that meet or exceed the ENERGY STAR® standards, as these units are designed to use at least 10% less energy than non-certified models.
To put things into perspective, a family that installs an efficient tankless water heater could expect to save up to $100 a year on energy costs compared to traditional water heaters, according to the U.S. Department of Energy.
Lastly, think about installation and ongoing upkeep. Tankless water heaters usually require specific venting arrangements, especially for exterior models. Ensure that you are hiring a licensed professional to handle the installation to avoid future headaches. Furthermore, plan for routine maintenance, including descaling the unit every 1-2 years, to keep the heater running efficiently.
Choosing the right exterior tankless water heater doesn’t have to be complicated. By assessing your hot water needs, selecting the proper flow rate and capacity, watching for energy efficiency, and planning for professional installation, you can make an informed decision that suits your household.
Ready to find the perfect tankless water heater for your home? Start by measuring your water flow needs and checking out top-rated models during your research phase. Your warm showers await!
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