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Continuous Water Heater Benefits: A Guide

If you’re tired of running out of hot water during your shower, a continuous water heater might be the solution. In this guide, we’ll explain continuous water heaters, how they work, and essential features to consider when buying one. We’ll also help you decide whether to install it yourself or hire a professional. Discover the benefits of a continuous water heater and how it can improve your life.

Understanding Continuous Water Heaters

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These units provide hot water on demand, also known as tankless or on-demand water heaters. They operate without a storage tank, directly heating water, making them energy-efficient and capable of supplying continuous hot water. Ideal for homes with high hot water demands, continuous water heaters ensure a constant flow without the need for a reservoir.

Definition and Basic Concept

Continuous water heaters provide a constant hot water supply without needing a storage tank. They are compact, space-saving, and can be powered by gas, electricity, or propane. These heaters offer efficient and convenient hot water on demand for homes with high hot water demands.

How they work

Continuous water heaters quickly heat water as it flows through the unit using a heat exchanger. When a hot water tap is opened, the flow sensor activates the heating element, providing instant hot water. Turning off the tap stops the heating process, resulting in energy savings. Enjoy an endless supply of hot water with this efficient system.

Key Features to Consider When Buying a Continuous Water Heater

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When choosing the right model, select a continuous water heater that matches your household’s hot water needs. Look for energy efficiency ratings like the Uniform Energy Factor (UEF) to gauge operating costs in your type of water heater. Regular maintenance, including descaling, is essential for optimal performance. Prioritize reputable brands with positive customer reviews. Consider professional installation services for complex setups.

Size and Capacity

Selecting the right size and capacity for your continuous water heater is crucial. Consider the flow rate needed to meet simultaneous hot water demands, as well as the ambient and desired hot water temperatures. Proper sizing ensures a continuous supply of hot water without interruptions.

Energy Efficiency

Choose high energy efficiency to lower costs and environmental impact. Look for units with a high Uniform Energy Factor (UEF) for peak efficiency. Efficient models heat water only when needed, conserving energy. Consider UEF, gallons per minute (GPM), and fuel type to select the suitable model for lower costs and sufficient hot water.

Maintenance Requirements

Regular descaling and flushing are essential for maintaining heat exchanger efficiency and eliminating mineral deposits and sediment. Following the manufacturer’s maintenance intervals and procedures is crucial to extend the lifespan and optimize the performance of a continuous water heater.

Installation: DIY or Hire a Professional?

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Deciding between DIY or hiring a professional to install a continuous water heater is crucial. DIY requires knowledge of plumbing, electrical work, and building codes, as well as constant trips to Home Depot. Meanwhile, professional installation ensures proper sizing, venting, and connection compliance. Hiring a professional could have installation costs, but it minimizes errors and may be required by some manufacturers for warranty validation.


Continuous water heaters offer numerous benefits for homeowners. It provides a continuous hot water supply on demand, eliminating the worry of running out. These compact units are suitable for homes of all sizes and have a longer lifespan than traditional water heaters. Additionally, they are energy-efficient, helping you save on utility bills. Consider size, capacity, energy efficiency, and maintenance requirements when selecting a unit.