Tank gas water heater sizes chart
| Tank capacity (gallons/liters) | Dimensions (in./cm.) | Dimensions (in./cm.) | Max. Temperature (F/C) | Weight (lbs/kg) |
| Tank capacity (gallons/liters) | Diameter | Max. Temperature (F/C) | Weight (lbs/kg) | BTU |
| 30, 40, 50, 75, 100 | 16 - 25 | 30 - 70 | 140 - 150 | 75 - 160 |
| 114, 151, 189, 284, 379 | 41 - 64 | 76 - 178 | 60 - 66 | 34 - 73 |
Full Answer
What are the measurements of a water heater?
- What is the pattern of hot water usage? ...
- What is the incoming (ground) water temperature? ...
- You can use a map to determine an average temperature in your area.
- Location is also important as the ground or incoming (inlet) water, for example, is colder in northern regions than in southern.
How to size your water heater?
- 1 - 2 fixtures at once, you’ll need at least 3.5 GPM.
- 2 - 3 fixtures at once, you’ll need at least 5 GPM.
- 3 - 4 fixtures at once, you’ll need at least 7 GPM.
- If your plan to use 5 or more fixtures at once, you may need multiple tankless units in sequence.
What is the size of a standard water heater?
The most common water heater capacities are 40 and 60 gallons (180 and 270 litres, respectively). They also come in 20-, 80- and even 100-gallon sizes. Choosing a tank that's too big will bump up your electricity bill, while a size too small could cause you to run out of hot water. . Also to know is, is a 50 gallon water heater enough?
What size water heater do I Need?
- 1 or 2 people—23 to 36 gallons
- 2 to 4 people—36 to 46 gallons
- 3 to 5 people—46 to 56 gallons
- 5 or more people—over 56 gallons (add 10 gallons per additional person)
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What are the dimensions of a standard water heater?
Tall water heaters typically range in height from 50 to 76-inches, and most have a diameter between 18 to 21-inches.
What are the dimensions of a 40-gallon hot water heater?
Smith® 40-Gallon Tall Natural Gas Water Heater 18" D x 61-3/4" H | HD Supply.
How much space do you need for a water heater?
Water heaters must be surrounded by a certain amount of clearance, or air space, to function properly and safely. A clearance area of 12 inches is required on all sides of a hot water heater.
How do you figure out what size water heater you need?
Measure the amount of water and multiply by 60 to get the gallons per minute (or liters per minute). The flow rate through the demand water heater should be at least 3.25 gallons (12.3 liters) per minute. To reduce flow rates, install low-flow water fixtures.
What are the dimensions of a 50-gallon hot water heater?
A 50-gallon American Standard water heater has a height of 57.75 inches and a diameter of 20.31 inches.
How tall is a state 40 gallon water heater?
Frequently Purchased With...Brand:State IndustriesCollection:ProLineDimensions:51.5 in X 22 inFuel Type:Natural GasHeight:51.55 more rows
Can you put a water heater in a cabinet?
You can purchase a wooden cabinet, although more people prefer to use an all-metal unit. They are durable, and they offer better use of space. You can even create a water heater cabinet to put in a closet for enhanced security and protection.
How small can a water heater room be?
Depending on whom you will ask and what your situation is, the answer to this can be a yes or a no. The water heater needs air space of at least 12 inches or 30 centimeters on every side of the heater. This is to ensure that the heater will be able to have proper ventilation and combustion.
Can I enclose my water heater?
In most instances, a home's water heater is placed in the basement. When the basement is finished so it can be used for another purpose, leaving the water heater in plain view can detract from the appearance of the room. You can enclose the water heater by building a wall around it and constructing a utility closet.
What size water tank do I need for a family of 4?
Start with Your Household Size So, for a family of 4–5 people, you will need to get a tank that is able to hold at least 50–60 gallons. For a family that is bigger than 5, you will need to look for tanks ranging up to 80 gallons.
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.
Which is better short or tall water heater?
Short water heaters are generally more energy-efficient as they have a lower power rating. They also heat the cold water faster and recover than tall ones due to the lower water volume in the storage tank. This is important when trying to save money.
Does water heater closet need to be vented?
When a residential, gas fired water heater is installed in a closet, the heater combustion gases must be vented to the outside of the residence and the fresh air needed for combustion must be drawn in from outside the home using double wall metal pipe; single wall pipe is not permitted.
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.
What are the dimensions of a 30 gallon hot water heater?
Product DimensionsType:TallHeight:46 1/2"Diameter:19"Width:19"Depth:19"1 more row
Is a tankless water heater worth it?
Tankless: Gas and electric tankless water heaters run more efficiently than the conventional water heaters of the same fuel type. We rated the annual energy consumption cost Excellent for a gas model but only Fair for an electric, but both rate Very Good for energy efficiency.
What Size Water Heater Do I Need?
If you’re going with a storage tank water heater, here’s a rough guide for storage tank capacity:
How to determine water heater flow rate?
To determine the water heater flow rate needed, you'll want to add up the flow rates of all the appliances you plan to use at the same time ( showers, washing machines, etc.). You'll then determine the necessary temperature rise by subtracting the incoming temperature from the desired outgoing water temperature.
What temperature should a tankless water heater be?
In this case, you would want a tankless water heater with a temperature rise of 50 degrees. Based on average ground water around 50 degrees, here are the sizes you would need for a tankless unit based on your ...
What is storage tank water heater?
Storage tank water heaters are far more common than tankless. This type of water heater features an insulated tank that stores hot water until it’s needed.
What are the two types of water heaters?
There are two primary types of water heaters: storage tank water heaters and tankless. Before finding the right size water heater, you must determine which type you’re going to purchase
What is the most important factor to consider when buying a water heater?
Household size - Do you have a small condo or a large house? Is it just you and your partner, or do you have multiple family members? The size and occupancy of your household are some of the most important factors to consider when water heater shopping because you don’t want the last person showering to be stuck with cold water.
How many gallons of water do you need for a 2 person tank?
2 - 3 people, you’ll need at least a 40-gallon capacity tank.
What is a water heater?
Water heaters and boilers are residential and commercial appliances that provide a continuous supply of hot water throughout a building for conditioning or washing. The variation in names and functions of hot water heaters is attributed to their capacity to heat drinking water, usage in the a range of purposes in the domestic or industrial sphere, ...
How many gallons of water does a water heater last?
A household of 2 to 3 people calls for 40-50 gallons (151-189 liters) and 50-60 gallons (189-227 liters) for 3 to 4 people. How long do water heaters last? The general lifespan of a water heater ranges from 8 to 12 years.
What is a 75 gallon water heater?
The Rheem Performance High Demand Gas Water Heater (75 Gallon) is a smaller version of the 98-gallon capacity. It runs on propane and features an eco-friendly burner with low NOx design. The heater requires no filters, hence easy to clean and is also easy to light since it needs no matches.
What is a 9.5 GPM tankless water heater?
The Rheem Mid Efficiency Tankless Gas Water Heater (9.5 GPM) is an indoor-only installation tankless water heater with a minimum activation flow rate feature that ensures users receive hot water even when the demand situation is low . The tank uses natural gas as fuel, can be connected to four showers and has a freeze protection feature that ensures the water temperature does not go below -30 °F.
Is a 65 gallon water heater good for the environment?
The Rheem Professional Prestige Hybrid Water Heater (65 Gallon) will benefit not only your household but also the environment as it produces fewer greenhouse gases. It is ideal for showers, washing dishes, doing the laundry, and can operate in any weather or season. The water heater features an EcoNet built-in leak detection system to send you water leak alerts to your phone and operation modes with energy saver. Vacation modes also allow you to set the heater to provide water when needed or hold indefinitely.
Does a Rheem Marathon water heater rust?
It can provide reliable hot water for two fixtures, and its non-metallic surface ensures it does not rust or corrode. The polyurethane insulation ensures low energy consumption, and the several layers of filament wound fiberglass ensure the tank last longer.
Tankless Water Heater Sizes vs Traditional Tank Sizes
Tankless water heaters deliver 2 GPM all the way up to 12 GPM of hot water. How many GPM will you need? The 5-10 GPM ones work just fine for the majority of households. The water heater model you choose will vary based on the temperature rise, peak hour demand and first hour rating.
What Does Gallons Per Minute Mean?
Gallons per minute is a unit of flow in the US Customary system. There are 231 cubic inches in one gallon, so there are 7.4 gallons in one cubic foot. Therefore, 1 gallon per minute is equivalent to 0.00222801 cubic feet per second (cfs).
How to Determine How Much Water Your House Uses
Water is a precious resource in California, and similar to temperature rise, it’s important to know how much water your household is using. Before you attempt to install a traditional tank or any size tankless water heater, use these tips on how to determine how much water your house is using:
Additional Factors to Consider While Sizing Water Heaters
Aside from peak hour demand, here are a few other factors that you need to keep in mind when sizing the water heater which we will discuss in this article.
What to consider when sizing a tank-type water heater?
Before you learn how to size a water heater for a family of 3, 4, 5, or more, a small house with 1 or 2 bathrooms, or a large house with 3+ bathrooms , make sure to get answers to the following questions:
What are the important data to know when checking for a water heater?
When checking for heaters, you will notice some important data in the specifications provided by the manufacturer: Power, Efficiency, Peak Hour Demand, First Hour Delivery, and Recovery Rate. As you analyze the technical data, you become more familiar with the available models and how to size a water heater properly.
How much hot water does a 50 gallon tank have?
Keep in mind that only 70% of the hot water of the heater's tank size is actually available for use (50-gallon tank size has 35 gallons of hot water for use).
Why is it important to size a water heater?
Sizing a water heater is important because if you buy a small unit, it will run out of hot water fast, and if you buy larger than you need, you will pay more for hot water that you won't even use. Either you are looking to buy a gas or electric water heater from Rheem, AO Smith, Bradford White, State, GE, Kenmore, or any other manufacturer, ...
What brand of water heaters are available?
Either you are looking to buy a gas or electric water heater from Rheem, AO Smith, Bradford White, State, GE, Kenmore, or any other manufacturer, you will have a wide range of models available; from small point-of-use to high-recovery and ultra-efficiency type.
What is the recovery rate of a water heater?
The Recovery Rate is the amount of water (in gallons per hour) one heater can raise when the temperature increases by 60 F.
How does groundwater temperature depend on the weather?
The groundwater temperature depends on the location, elevation, and time of the year (climate). You can use a map to determine an average temperature in your area. Location is also important as the ground or incoming (inlet) water, for example, is colder in northern regions than in southern. As seen from the above, it is important ...
How to size demand water heater?
Therefore, to size a demand water heater, you need to determine the flow rate and the temperature rise you'll need for its application (whole house or a remote application, such as just a bathroom) in your home. First, list the number of hot water devices you expect to use at any one time. Then, add up their flow rates (gallons per minute).
How hot is water in a water heater?
Typically, a 70ºF (39ºC) water temperature rise is possible at a flow rate of 5 gallons per minute through gas-fired demand water heaters and 2 gallons per minute through electric ones. Faster flow rates or cooler inlet temperatures can sometimes reduce the water temperature at the most distant faucet.
How to determine demand water heater flow rate?
If you don’t know the flow rate, estimate it by holding a pan or bucket under the faucet or shower head and measure the flow for a minute. Measure the amount of water and multiply by 60 to get the gallons per minute (or liters per minute). The flow rate through the demand water heater should be at least 3.25 gallons (12.3 liters) per minute. To reduce flow rates, install low-flow water fixtures.
What is the first hour rating on a water heater?
The first hour rating is the number of gallons of hot water the heater can supply per hour (starting with a tank full of hot water). It depends on the tank capacity, source of heat (burner or element), and the size of the burner or element. The EnergyGuide label lists the first hour rating in the top left corner as "Capacity (first hour rating).". ...
How many gallons of water do you need for a water heater?
Therefore, this household would need a water heater model with a first hour rating of 66 gallons or more.
What temperature should a dishwasher be?
For dishwashers without internal heaters and other such applications, you might want your water heated at 140ºF (60ºC). In that case, you'll need a temperature rise of 90ºF (50ºC). Most demand water heaters are rated for a variety of inlet temperatures. Typically, a 70ºF (39ºC) water temperature rise is possible at a flow rate ...
How to calculate peak hour?
To estimate your peak hour demand: 1 Determine what time of day (morning, noon, evening) you use the most hot water in your home. Keep in mind the number of people living in your home. 2 Use the worksheet below to estimate your maximum usage of hot water during this one hour of the day—this is your peak hour demand. Note: the worksheet does not estimate total daily hot water usage.
Residential Sizing
To select the right State water heater for your home, try our Xpert product selector for personalized estimates of the performance and estimated energy cost.
Commercial Sizing
For Commercial Sizing applications, we have developed StateSize, a robust sizing program. You can select your application, and we'll guide you through the process.
Do water heaters need a higher BTU?
That is, a water heater in the North – either tank or tankless – will need a higher BTU input in the winter than the summer to heat and deliver water to a given temperature. Regardless of which type of water heater is used, you should start with a lifestyle audit of your client’s typical usage:
Do tankless water heaters run out of water?
While tankless water heaters do not run out of hot water, if not sized correctly, the flow rate of that water can be adversely impacted. The temperature of the shower will remain the same, but flow could slow to a trickle.