If you live in a house with three or more people, you understand how critical it is to have enough hot water. It would help if you didn’t have to worry about how much water you’ll use each day; your water heater should always be able to meet your needs. However, selecting the best tankless electric water heater for large family is critical to ensuring this occurs. Instead of relying on an old tank water heater, you might want to consider a top-rated tankless electric water heater.
Here is the best tankless electric water heater for large family and some advice on picking the best one and keeping your family happy!
One of the most common tankless water heater mistakes is purchasing a defective unit to meet all of your hot water requirements. You don’t want a tankless heater that is too small, nor do you want one that is too large and wastes energy. The size of your tankless water heater should be as close to your hot water needs as possible.
[wptb id=1245]Choosing the Correct Tankless Water Heater Dimensions
1 – Calculate Your Flow Rate
It expressed the flow rate in gallons per minute (GPM) and referred to the amount of water that the tankless can heat at any given time. A tankless water heater with a flow rate of 3.5 GPM, for example, will deliver 3.5 gallons of hot water every minute.
You’ll need to know we use simultaneously how many hot water fixtures during peak usage to calculate your household’s required flow rate. Calculate the total GPM required by adding the GPM of each water fixture. For instance, if your household takes two showers simultaneously, each using 2.2 GPM, your peak hot water demand is 4.4 GPM.
2 – Efficiency Score
Efficiency is one of the primary advantages of tankless water heaters. They only heat water when needed, resulting in minimal energy waste and lower utility bills. The challenge is finding accurate ratings for electric tankless water heaters, typically more efficient than their gas counterparts.
3 – Determine the Rise in Temperature
We know the difference between the heated output temperature and the incoming groundwater temperature as the temperature rise. The temperature rise will be 48F (100 – 52 = 48) if the incoming water temperature is 52F and the desired hot water temperature is 100F.
The incoming water temperature affects the GPM the unit can deliver. For instance, the incoming water temperature in Florida (67F) is significantly higher than in Nevada (47F). It means that the same tankless water heater will not be able to deliver the same GPM in both locations. Because the heater in Nevada will have to work harder to heat the water (temperature rise), the GPM will be lower.
4 – Features Included in Additional
With electric tankless water heaters, physical size is rarely an issue. Because water pipes and electrical conduits have small diameters, units are generally small and slender. However, when installing point-of-use models, dimensions may be important. The majority are extremely quiet, with none of the noise associated with gas models. Some claim to be completely deafeningly quiet.
These devices almost always have a digital display. The controls and information provided, however, differ significantly. Basic models may only have up and down arrows to increase or decrease the power and a temperature readout. Others can remember preset temperatures, offer variable flow control to reduce power consumption, or track and report energy savings.
5 – Maintenance
With proper maintenance, tankless water heaters last much longer than traditional storage tank heaters. If you make sure to delete regularly, 15 to 25 years can be reasonable. When heating hard water, de liming means removing possible scale residues that stick to the (copper/stainless steel) heating elements. Installing a water softener upstream of the water heater is another option.
6 – Installation of an Electric Tankless Water Heater
Installing an electric tankless water heater may appear simple to the average DIYer. However, if you have no experience with this, you should not attempt to do it yourself to save a few dollars. It’s simply too dangerous to take the chance. If licensed contractors do not install the water heater, the warranty may be void.
Another thing to remember is that not every home is suitable for a POE unit due to the excessive amp draw. It could mean that your old electrical service panel requires larger wires and breakers or that you need to install a completely new one, which will cost a few thousand dollars.
7 – Warranty
A lifetime product warranty is always nice to have for peace of mind.
Why Purchase a Tankless Water Heater?
1 – Convenience
The most common reason for choosing a tankless water heater is to have unlimited hot water. A traditional tank water heater can only provide hot water until it runs out. After that, you’ll have to wait for a freshwater tank to heat up. Tankless water heaters provide hot water on demand, limited only by your desires.
2 – Saving Space
You can gain additional storage or living space by replacing a tank-style water heater with a tankless version. Your new tankless water heater will be smaller than the tank heater it replaces, regardless of its size.
3 – Long Live Expectancy
Tank-style water heaters have a lifespan of eight to twelve years. A tankless water heater that receives regular maintenance can last up to 20 years. In addition to their longevity, tankless water heaters have the advantage of having mostly repairable or replaceable parts instead of tank water heaters, which have only a few repairable parts.
4 – Environmentally conscious
It heated water only when needed with tankless water heaters. As a result, they are more efficient and less harmful to the environment. Tank water heaters must keep a tank full of hot water whether or not anyone is using it. Electric tankless water heaters are environmentally friendly if they generate the electricity used to power them from renewable sources.
Our Top Collection of Best Tankless Electric Water Heaters for Large Families
1 – Stiebel Eltron 239223 Tankless Water Heater
Stiebel Eltron 239223
Key Features:
- A source with a battery
- The dimensions are 4.63 x 16.63 x 14.5 inches.
- At 240 volts, the maximum draw is 28,800 watts
- 8 gauge copper wiring and 40 amp breakers
- 1 pound of weight
- 28.8 KW wattage
- 150 pounds per square inch maximum pressure
Pros
- The slim design helps to save space.
- This heater provides precise temperature control and high efficiency.
- It is extremely light in weight.
- Operation volume is silent.
- It comes with Stiebel’s Advanced Flow Control feature.
- A simple digital display.
Cons
- This product contains California’s Proposition 65.
The Stiebel Eltrong 239223 is the best tankless water heater. It’s a great water heater for a variety of reasons. Why is this the best tankless electric water heater for large family? Because it consumes 15 to 20% less energy than traditional electric water heaters. These tankless water heaters don’t just keep hot water on hand, waiting to be used.
They provide continuous hot water when the user requires it while wasting no energy when they do not. The installation process is also simple enough that someone with no prior experience with water heaters can complete it.
This tankless water heater has an advanced flow control system. The heater uses patented German technology to maintain water temperature automatically for consistent comfort. To ensure that hot showers are not interrupted if hot water demands exceed capacity, the heater can reduce water flow slightly.
2 – Ecosmart ECO Electric Tankless Water Heater
Ecosmart ECO Electric
Key Features:
- 3.63 x 17 x 17 inch dimensions
- 10.98-pound weight
- Aluminum is the material of choice.
- 240 volts voltage
- 27 KW wattage
- Traditional tank heaters are 90 percent smaller.
Pros
- The 0.3 GPM minimum flow rate and self-modulating technology are environmentally friendly features.
- Up to 50% can reduce water heating costs.
- The list’s smallest and lightest device
- Tankless heaters are less expensive than premium heavy-duty heaters.
Cons
- To achieve 27 kW of power, three 40 A breakers are required.
EcoSmart ECO tankless water heaters (of which there are several with varying wattages but essentially the same engineering) are extremely environmentally friendly. The EcoSmart ECO 27 is the lightest tankless water heater on the list, weighing less than 11 pounds.
One distinct advantage is the extremely low activation flow of 0.3 GPM. Most tankless water heaters turn on at 0.5 GPM hot water flow when hot water is required. With a 0.3 GPM activation flow, the EcoSmart ECO series heater responds faster to low-flow hot water demand.
On 240 V, a grid of 112.5, we need 27 kW power. The EcoSmart ECO requires a 200 a grid for full-power operation. It achieved the best operational results using three double pole breakers rated at 40 amps each.
You will have on-demand hot water with high energy efficiency once the EcoSmart ECO is installed. Compared to a comparable storage water heater, you can save up to 50% on hot water. It also has self-modulating technology, balancing electric power and hot water outputs, increasing the heater’s energy efficiency.
On Amazon, the EcoSmart ECO is the best tankless electric water heater for large family. You can choose between a standard 18 kW heater and a 27 kW heater. Both devices, of course, have a limited lifetime warranty.
3 – Rinnai V75iN Tankless Hot Water Heater
Rinnai V75iN Tankless Hot Water Heater
Key Features:
- 45.6-pound weight
- 17.5 x 30 x 13 inch dimensions
- Size 7.5 GPM
- It saved energy through space-saving design
- The Right Water Pressure
Pros
- Because of its small size, someone can install it almost anywhere.
- This heater can save up to 40% on energy.
- There is no requirement for strength.
- It connects to a smartphone app.
- Installation is simple.
Cons
- Much more expensive than similar products.
Having a water heater available during a power outage can be extremely beneficial, especially on chilly evenings. Water heaters that are not powered by electricity can be very useful. The Rinnai Indoor water heater, which runs on natural gas, is one such example.
The Rinnai V75iN heater’s components are easily swappable because every part is replaceable. The heater conserves energy. This heater weighs 46.3 pounds, making it heavier than similar products. The Rinnai V75iN is a space-saving model with maximum output in a small package. Because of the compact design, it uses less energy and conserves more water. The heater can supply water at a flow rate of up to 9.8 GPM,best tankless electric water heater for large family. ideal for a large family. The uniform energy factor is 0.81, while the energy factor is 0.82.
The heater is simple enough on its own, but it has a few unique features that set it apart. You could, for example, download software that connects to your water heater and allows you to program when it warms the water. You can even put the heater on vacation mode if you want to.
4 – Rheem Tankless Electric Water Heater (18kW 240V)
Rheem Tankless Electric Water Heater
Key Features:
- AC/DC Power Source
- 18.5 x 14.5 x 3.5 inch dimensions
- 14.78-pound weight
- 240 volts voltage
- 18000 watts of power
- 7 gallons of water consumed
- 150 psi maximum pressure
Pros
- For small households, the best small electric tankless heater is
- It’s simple to use and set up (user-friendly)
- In most cases, upgrading your electricity grid is unnecessary (runs on max. 75 A)
- The price is affordable.
Cons
- If you need a lot of hot water at once, this isn’t the best option.
Not everyone requires a lot of hot water on demand. For some, simply having a hot shower without using two faucets or running a dishwasher is enough. The Rheem 240V RTEX-18 tankless heater is the best tankless electric water heater for large family. You don’t need to spend more than $1,000 on a large tankless heater if you have a small household with few simultaneous hot water needs (faucets, dishwasher, and shower all at once). A small electric one with a straightforward installation should suffice.
If your electricity grid is 240V, 75A, you can use the Rheem 240V RTEX-18 (no need to upgrade your grid to 200 A). It generates 18 kW of power, sufficient for a 4.4 GPM maximum hot water flow. In reality, that is what the majority of smaller households require. Because it’s small, it’s also very light. The Rheem 240V RTEX-1 weighs only 8.5 pounds but has a power output of 18 kW thanks to its two heating chambers (most heaters only use the 1). The Rheem 18 kW Classic Series electric tankless water heater weighs less than 10 pounds and is small but powerful.
It’s user-friendly because it’s simple to use and install and has a straightforward digital thermometer display. It shows that electric tankless heaters don’t have to be complicated devices that only HVAC engineers can install using a 100+ A power grid. Rheem tankless water heaters come in various models with up to four heating chambers and a maximum power of 36 kW.
5 – EcoSmart ECO 11 Electric Tankless Water Heater
EcoSmart ECO 11 Electric Tankless Water Heater
Key Features:
- 3.75 x 8 x 11.5 inches in size
- 6.5-pound weight
- 220 volts voltage
- 13000 watts of power
- It has a flow rate of 1.3 to 3.1 gallons per minute.
Pros
- Affordably priced unit.
- Extremely effective.
- Technology that self-modulates.
- Temperature control via computer.
Cons
- Some customer service and warranty complaints.
The EcoSmart ECO 11 is an excellent choice for those who live in small modern homes. With a maximum flow rate of 3.1 GPM, this affordable unit can simultaneously provide hot water for a shower and a low-flow faucet. With an outstanding efficiency of 99.8%, it is one of the few electric tankless water heaters that use the precise UEF standard.
The ECO 11 has self-modulating technology, as do all EcoSmart models. The DOE estimates that it saves around 50% on annual hot water costs. Adjust the temperature in 1-degree increments between 80 and 140 degrees Fahrenheit with the digital temperature control. The EcoSmart ECO 11 is a 13 kW device requiring 220V and a single 60A breaker.
6 – Bosch Electric Mini-Tank Water Heater
Bosch Electric Mini-Tank Water Heater
Key Features:
- 13.75 x 10.75 x 13.75 inches in size
- 15.5-pound weight
- The cord plugs 36-37 inches
- 120 volts voltage
- 1440 watts of power
- 2.5-gallon size
Pros
- Mounting is simple.
- Dependable water heater
- Fits beneath sinks
- It has a mini-tank that fits under the sink and provides hot water.
- It provides instant hot water, making it simple to use.
- For a longer service life, it’s made of premium glass-lined material.
Cons
- Because of its cube shape, it may be awkward in some places.
A point-of-use tankless water heater is small enough to fit under sinks and is commonly used to increase the amount of hot water in bathrooms and kitchens. You can use it to supplement a tankless water heater in the house or a traditional water heater far from the sink. There is no way to mount the Bosch model on a wall, shelf, or cabinet floor. It measures only 13.75 x 13.75 inches.
Despite only supporting one sink, it offers instant hot water and does not waste energy storing and heating water. It also has an excellent 98 percent energy efficiency rating.
Conclusion
Because there are so many options on the market today, choosing the best tankless electric water heater for large family can be difficult. While tankless heaters can help you save money on your utility bills and water, they aren’t for everyone. This guide will go over some of the benefits and drawbacks of these water heaters before purchasing one.
Frequently Asked Questions
A: A tankless model can provide hot showers for the entire family, plenty of warm water for dishes and laundry, and a relaxing soak in a warm bath after a long day at work.
A tankless water heater that can produce 7 gallons of hot water per minute is ideal for a family of four. During peak times, most families use about 6.5 GPM. You’ll need to know how many appliances your family will use at the same time to determine the tankless water heater size.
Tankless water heaters, gas, and electric are more efficient than traditional water heaters of the same fuel type. We gave a gas model an excellent rating for annual energy consumption and a fair rating to an electric model, but both received a Very Good rating for energy efficiency.
Please keep in mind that tankless water heaters come in various sizes, and you’ll need one that can deliver a powerful flow to the tub. Filling a large tub with a small tankless water heater can take along. Second, bite the bullet and replace your current water heater with a larger one.