Tips on Choosing the Right Water Heater Size

Not having an ample hot water supply can be a hassle–especially in areas with particularly cold climates. If you have a large family or a high demand for hot water, the capacity of your water heater may not be sufficient. This is when you need to consider quick water heater services and purchasing a bigger model to avoid dealing with in the future.

But what size of water heater do you need? As the leading name for water heater repair in Hallsville, MO, Brian Wear Plumbing knows exactly what specs you need. Here are some tips to help you choose the right one for your household.

Evaluate Your Water Heater Capacity

The first thing to do is evaluate your current water heater and its current capacity. If it’s too small, you’ll need to choose a model with higher specs. Before the water heater installation, be sure to discuss things such as space and number of household members to make sure you get the heater that’s apt for your needs.

Know How Many People Use It

If your family has grown bigger since you bought your current water heater, you might want to adapt and consider a larger model. Another factor is if other people live in your house that often use hot water, such as lodgers or family members staying temporarily.

Calculating the Peak Hour Demand (PHD)

Another way to determine your water heater size–whether a modern or traditional water heater–is by calculating the peak hour demand (PHD). The PHD is determined by adding up the total number of gallons of hot water used during the busiest hour of the day.

First Hour Rating (FHR)

Most manufacturers include a first-hour rating or FHR on their energy guide labels that indicate how much hot water the heater can supply per hour (starting with a tank full of hot water). The higher the FHR, the more hot water is available during peak use.

To determine what size tankless water heater you need, follow these steps:

• Determine the total gallons of hot water used at one time by all appliances or fixtures that will be using hot water at the same time

• Multiply the number of gallons used by the temperature rise needed

• Subtract the incoming cold water temperature from the desired output temperature (140°F – 70°F = 70°F)

• Compare this figure with the first-hour rating (FHR) listed on an energy guide

When choosing a replacement water heater for your household, turn to the most trusted plumber in Hallsville, MO. You can count on Brian Wear Plumbing to provide you with the help you need. Contact us today!