How many gallon hot water tank do I need
Nathan Sanders
Published Apr 21, 2026
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.
Is 40 gallon water heater enough for a family of 4?
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.
Is a 50 gallon water heater enough for a family of 5?
Water Heater Sizes The answer to this question will vary depending on the total number of kids you have. For example, a family of 3 to 4 people should purchase a 50 – 60 gallon water heater. On the other hand, a household with 5 – 7 people may require a water heater with a 60 – 80 gallon water tank.
What is a good size water heater for 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.How do I know what size hot water heater I need?
- Look for a sticker on the side of your water heater. It should have the serial number and other information as well as the gallon capacity listed. …
- Using a tape measure, measure the height of your water heater from its base to the top. Then measure the width (diameter).
How long does it take for a 40-gallon water heater to run out of hot water?
A gas water heater will recover in half the time of an electric unit. A 40-gallon gas water heater can recover in about an hour. Recovery for a 40-gallon electric water heater takes about two hours.
How many showers 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).
Is there a big difference between a 40 gallon and 50 gallon water heater?
If you mean a 40 vs 50 gallon electric storage water heater, the only difference is the size and that you will have 10 more gallons of hot water to play with.What size water tank do I need for my house?
You can estimate the necessary tank capacity (in gallons) based on the number of people in the house: 1 or 2 people—23 to 36 gallons. 2 to 4 people—36 to 46 gallons. 3 to 5 people—46 to 56 gallons.
How many gallons of hot water used in a shower?UseAverage gallons of hot water per usageShower20=Shaving (.05 gallon per minute)2=Hand dishwashing or food prep (2 gallons per minute)3=Automatic dishwasher7=
Article first time published onWhat size water tank do I need for a family of 4?
A family of 4 would use about 250 gallons per day on average. If you want to do a bit more precise calculation of your family’s water usage with landscaping, check out this handy water usage calculator!
How many showers can you put in a 50-gallon water heater?
If a water heater has a 50-gallon tank of fully-heated water, it should easily be able to supply enough hot water for a fifteen or twenty minute shower. Showers longer than that are unnecessary.
How much does a 50-gallon hot water heater cost?
A 50-gallon water heater costs around $1,000 for an electric heater and $1,200 for a natural gas heater of the same capacity.
Is a 20 gallon hot water heater big enough?
20-gallon water heaters are a unique size. They’re large enough for smaller homes that don’t require large amounts of hot water, yet they’re an excellent choice for high-demand point-of-use (POU) applications such as bathrooms with showers. The versatility of the 20-gallon size makes these heaters ideal for many uses.
Is 40 gallon water heater enough for a family of 5?
2-3 people need a 40-gallon water heater. 3-4 people need a 40-50 gallon water heater. 5 or more people need a 50-80 gallon water heater.
What is the average size water heater for a house?
A tank size of 36- to 46-gallons is best for homes of up to four people. A home with five people can be served by a 46- to 56-gallon tank. For six or more people, look at larger tanks with a 60-gallon or greater capacity.
How much water does a 20 minute shower use?
If a standard showerhead is fitted, it will use around an extra half a gallon each minute, accounting for a 25-gallon emittance every 10 minutes, or 50 gallons throughout a 20-minute shower.
What size water heater do I need for a family of 3?
1 – 2 people, you’ll need a water tank with at least a 30-gallon capacity. 2 – 3 people, you’ll need at least a 40-gallon capacity tank. 3 – 4 people, you’ll need at least a 50-gallon capacity tank (electric) or a 40-gallon capacity tank (natural gas or liquid propane).
How long should a hot water heater last?
It would be nice to know when the time is right to replace your water before it springs a leak and causes an inconvenience or worse yet, damage to your home. Typically a residential hot water heater lasts between 6 and 13 years. Beyond 12 years, you are on borrowed time!
How long of a shower can you take with a 30 gallon water heater?
Tank Capacity (gallons)Minutes of Hot Water (electric)Minutes of Hot Water (gas)301930402540503150
Will turning up water heater make hot water last longer?
Turn up the thermostat on the hot water heater. One of the easiest ways to make a hot shower last longer is by using less hot water while it’s at a higher temperature. To do this, turn up the temperature on the thermostat that’s attached to the hot water heater tank.
How much does it cost for a 40-gallon hot water heater?
Water heater costs by gallon A standard 40-gallon water heater costs $330 to $1,500 for the unit alone, or $500 to $2,500 including installation labor. *Price for tank unit only, not including installation.
How do you size a hot water tank?
Hot Water UseFamily SizeCapacity/Gas ModelApartment: 1 bathtub/shower2 people90 liters (20 gallons)Apartment: 2 bathtubs/showers2-3 people135 liters (30 gallons)Family home: 3 bathtubs/showers3-4 people180 liters (40 gallons)Family home: 2 bathtubs/showers Dishwasher Washer4-5 people180 liters (40 gallons)
How do you size a hot water storage tank?
Generally speaking, if you live in a two-person household, you can get away with a 30 to 40 gallon heater. Three to four people require a 40 to 50 gallon tank, and if you have five or more in your house, go with a 50 to 80 gallon model.
How big is a 5000 gallon tank?
Tank / CapacityLengthSize5000 Gallon Vertical Water Storage Tank102″102″ L 102″ W 158″ H5000 Gallon Vertical Water Storage Tank119″119″ L 119″ W 92″ H5000 Gallon Rainwater Collection Tank140″140″ L 140″ W 92″ H5000 Gallon Vertical Water Storage Tank140″140″ L 140″ W 92″ H
Should I upgrade to 50 gallon water heater?
If you are running out of hot water with a 40 gallon tank, it is often possible to upgrade to a 50 gallon tank without much modification. … Upgrading to a 50 gallon would likely provide about 15 gallons of additional hot water during your peak hour of usage during the day.
Is a short or tall water heater better?
Height does not diminish the unit’s ability to produce hot water. Next to heating, cooling and refrigeration, your water heater comes in third place in terms of energy use and costs. As a general rule, you should take an “if it ain’t broke, don’t fix it” approach in selecting a tall or short water heater.
How much does it cost to run a 50 gallon electric water heater?
According to the Department of Energy, based on the assumption that an electric water heater runs for an average of about three hours per day, a 50-gallon water heater, running at 5,500 watts, with an electricity rate of $0.16 per kWh, will have an annual operation cost of $781.
How much water is used in a 30 minute shower?
You may be surprised by how many gallons per minute your shower uses — on average, it’s 2.1. The average shower water usage is calculated by multiplying that average flow rate of 2.1 gallons per minute by the average shower length of 8.2 minutes. So, 17.2 gallons is, on average, how much water is used.
How many gallons are used in a 5 minute shower?
According to the U.S. Environmental Protection Agency (EPA), a full bathtub requires about 70 gallons of water, while taking a five-minute shower uses 10 to 25 gallons.
How much hot water is used in a 10 minute shower?
Modern showers usually use between 10 to 12 liters of water per minute. For a 10 minute shower, approximately 100 liters of water is used depending on the type of showerhead and how much water pressure is used.