## What is a good first hour rating for a water heater?

For the majority of homes, peak hot water use is in the morning when people are showering. This number is used to determine the best first-hour rating. So if your peak hour demand is 40 gallons, the best match for a water heater would have a first-hour rating of 38 to 42 gallons.

**What is first hour delivery on a water heater?**

By definition, first hour delivery is the calculated amount of hot water a fully heated water heater can deliver in the first hour period. This means you start with a water heater that has recovered to its’ thermostat setting (fully heated) and someone starts to use hot water such as in a shower.

**What is the first hour rating of a 50 gallon water heater?**

A 50 gallon water heater and a recovery rate of 40 gallons per hour (GPH). Calculate the formula as shown; 50 gallons X 0.70 + 40 gallons per hour (GPH) = 75 (GPH) first-hour rating. This means that you can get 75 gallons of heated water in the first hour of use.

### How is First hour Rating calculated?

To determine the first hour rating, you multiply the tank capacity by 70% and add the recovery rate—how quickly lost hot water in the tank is recovered. The tank capacity is multiplied by 70% to account for the loss of heat caused by cold water entering the tank.

**How long of a shower can you take with a 40-gallon water heater?**

A 40-gallon water heater can provide up to 2 showers in an hour (if you’re not using any other water appliances).

**What does first hour mean?**

First Hour means that full or portion of an hour occurring from the moment that the Parties jointly declare the NMP-2 APA consummated to the beginning of the next hour.

#### What does FHR mean water heater?

first hour rating

The first hour rating, or FHR, is another factor to consider when you’re shopping for a new water heater. The FHR rating comes from a different standardized test which essentially determines the amount of hot water that an up-to-temperature water heater can supply during its first hour of use.

**How long should 50 gallon water heater last?**

12 years

In general, 40-gallon heaters last for about eight years, while 50-gallon heaters can last 12 years. This is because 50-gallon heaters have thicker tanks. As a result, they are less likely to develop leaks. A 50-gallon water heater will last about 8 to 20 years, which is longer than most water heaters.

**Is 40 gallon water heater enough for a family of 4?**

Two and three-person families need at least a 40-gallon water heater. For a four-person family, a 50-gallon water heater is sufficient. 50-gallons is good if you’re using electricity, and 40 gallons will work for natural gas or propane.

## Is there a big difference between a 40-gallon and 50-gallon water heater?

50-gallon water heaters have a longer lifespan. In general, 40-gallon heaters last for about eight years, while 50-gallon heaters can last 12 years. This is because 50-gallon heaters have thicker tanks. As a result, they are less likely to develop leaks.

**Should I buy a 40 or 50 gallon water heater?**

Typically, the rule-of-thumb is that you want a 40 gallon tank for 1 to 4 people, a 50 gallon tank for 4 to 6 people, and a 50 gallon high recovery or 75 gallon tank for 6 to 8 people. Energy consumption for 40 and 50 gallon standard water heaters is quite comparable.

**How do I calculate my FHR water heater?**

Step 2: multiply the number of people in your household by 12. This is the FHR. For example, if you have 5 people in your house, your FHR will be 60 (5×12). If you want to figure out how much water you actually use during Peak Hour Demand and get an accurate FHR number, follow these steps.

### What is the difference between EF and UEF?

The Uniform Energy Factor (UEF) is the DOE’s newly developed metric for communicating the energy efficiency of water heaters. Previously, you may have seen efficiency measured by Energy Factor (EF). UEF replaces this metric.

**Is a 50 gallon water heater enough for a family of 4?**

For a four-person family, a 50-gallon water heater is sufficient. 50-gallons is good if you’re using electricity, and 40 gallons will work for natural gas or propane. Families with more than five persons may benefit from an 80-gallon electric water heater or 50-gallon gas water heater.

**What is water heater rating?**

Water Heater Efficiency Rating Electric water heaters have an efficiency rating of that varies from 88% to 95% while gas water heaters have an efficiency rating of around 67% or more.

#### What is the safe temp on a water heater?

Grab a heat-safe cup and a cooking thermometer.

**How fast should a water heater heat water?**

Hot water pumps. There are hot water pumps designed specifically to get you your hot water faster,and they eliminate running water down the drain while you are waiting.

**What is the safest water heater temperature?**

While everyone has different temperature preferences, most people agree that about 130 degrees Fahrenheit is the ideal water heater temperature for both gas and electric water heaters. The ideal water heater temperature range is 120°F to 140°F, depending on your preferences and hot water needs.

## What temperature should I set for my water heater?

– How To Check Your Water Heater Temperature – Recommended Temperature Settings – How To Turn Up Your Water Heater How to Set Temperature on a Gas Water Heater How to Set Temperature on an Electric Water Heater – Factors That Affect Water Temperature