Workout Tips
You hop out of bed to grab a hot shower when you hear a chilling sound: Your wife or kid beat you to it. Now most of the hot water will be gone.
Jump in too soon and you'll end up sudsy, shivering, and swearing. You gotta wait. But for how long?
To find out, use the following equation. Plug in how long you want to shower and how much hot water might be left.
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WAIT TIME FOR HOT SHOWER
[Expected Shower Duration minus Minutes of Hot Water Remaining] multiplied by 4.3 for electrical heater or 1.9 for gas.
For this second stat, check your tank's capacity (listed on its side) and note whether it's gas or electric.
Then see the chart below to find your tank's total available minutes of hot water, and subtract how long the last person hogged it.
Say your electric heater is 30 gallons. If the previous shower lasted 15 minutes, you're looking at about four minutes of hot water remaining.
If you want to loll in your own 15-minute shower, you'll need to wait 47 minutes before stepping in. (Gas units heat faster, so multiply by 1.9 instead of 4.3.)
Use that time to iron or brush your teeth. Then set your alarm 16 minutes earlier to get there first tomorrow.
| Tank Capacity (gallons) |
Minutes of Hot Water (electric) |
Minutes of Hot Water (gas) |
| 30 | 19 | 30 |
| 40 | 25 | 40 |
| 50 | 31 | 50 |
Assumptions: The water heater is set to 120°F; usage rate is 2.5 gallons per minute. Your target is 105°F. In this example, electric heaters are 4,500 watts; gas units are 3,800 BTUs.
The post How Long Does It Really Take for the Water to Get Warm in a Shower? appeared first on Workout Tips.
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