ECONNEX

Select the Right Size of Water Heater

Find the perfect fit for your needs! Discover the ideal water heater size with our expert tips and ensure efficient, reliable performance.

right size of water heater

Published on 31/08/2023

By Puneet Soni

Energy Comparison

Hot water accounts for about 25% of the average home energy costs. and Purchase what suits your family's needs and at the same time save money.

Simultaneous use of the hot water system is one of the fundamental determining factors. The number of people in your home combined with how and when they use the hot water.

Let’s discuss it further.

Determine the size you need

Sizing Storage Tank & Heat Pump Water Heaters:

To properly size a hot water tank, calculate peak hour demand and compare it to different models' first-hour ratings. The hot water tank should have a first-hour rating within 1-2 gallons of peak-hour demand.

First-hour rating is the gallons of hot water the tank can supply per hour after it has been filled. This depends on gallon capacity, size, and source of heat.

How to calculate peak hour demand:

  1. Determine what time of day your household uses the largest amount of hot water.
  2. List of different ways how the hot water is used at this hour.
  3. Calculate the total gallons used in this hour by multiplying gallons used per activity by the total times completed (see example chart below).

Comparing Water Heater Size to Space Available

Dimensions of the latest water heaters are typically 2 inches wider and 2 inches taller than old models.  If a standard-size water heater can’t fit the space, consider short and tall alternatives.  A tankless water heater is the best choice when space is an issue.

The size of the hot water system you need primarily depends on your family’s peak usage period and when you use additional hot water, as opposed to the number of bathrooms or people. Taking time to consider your actual usage before buying can save you energy and money.

Energy Comparison
Related Blogs
Harnessing Australia's Renewable Energy Sources
Embrace the power of renewables! Uncover the numerous benefits and minimal drawbacks of renewable energy sources for a sustainable future.
Renewable Energy Sources: More Pros Less Cons
Finding the Best Electricity Company in Australia
Explore the best electricity company options in Australia with our comprehensive guide. Compare top energy retailers with Econnex's comparison platform.
Best Electricity Company
Energy Credit Check: All You Need To Know
Energy credit check decoded! Learn the essentials of credit assessment for energy services and how it impacts your utility options.
Energy Credit Check: All You Need To Know
Finding an Internet Deal for Your New Home
Moving to a new home but haven't connected it to the web yet? Let Econnex guide you through the journey of finding a suitable internet deal for your new space.
New Homes Internet Deals
Connecting Your Electricity When Moving House: An Econnex Guide
Moving to a new space but haven't connected it to the grid yet? Our guide can help walk you through the steps to connect your electricity when moving.
Electricity Connection
Types of Energy Discounts in Australia: A Guide to Savings
Are sky-high electricity bills hurting your pockets? Unlock savings on energy bills by understanding the mechanics behind different types of energy discounts!
Types of Energy Discounts