Tank Vs Tankless Water Heaters: The Best Choice Determined (2023)

Ogbo Godfrey

Updated on:

Tank Vs Tankless Water Heaters

Affiliate Disclosure: As an Amazon Associate, we earn a commission on qualifying purchases if you purchase a product through a link on our website at no extra cost to you. Thank you.

Today, we will be putting the aged-long and unending debate of Tank vs Tankless water heaters to rest. Hence, make sure to read this till the end.

Picture yourself all geared up and ready to take on the day when all of a sudden the shower water becomes ice cold. It’s an unpleasant and annoying situation that nobody wants to be in. That’s why it’s so important for every home to have a high-quality water heater that is both efficient and dependable.

There are two primary types of water heaters which are the tanks and tankless models. Each has its advantages and disadvantages, making it difficult to decide which is best for your house. 

In this post, we’ll examine the ins and outs of these water heaters. When you’re done reading this blog post, you’ll know for sure what kind of water heater is ideal for your house and your needs. 

Tank Water Heaters

Tank Vs Tankless Water Heaters

In most homes, the water heating system consists of a tank water heater, often known as a storage water heater. This water heater, as the name implies, keeps water hot in a tank until it’s needed. To provide hot water, the water heater first replaces the water kept in the tank with cold water. 

After that, it heats it to the correct temperature when the hot water tap is switched on. The water is kept heated in an insulated tank using either electricity, natural gas, propane, or fuel oil. The water heater then activates when the temperature in the tank falls below a certain threshold.

Depending on how much hot water your household uses at once, you may choose a tank water heater with a capacity anywhere from 20 gallons to 100 gallons or more. Tanks that can carry more water are ideal for homes with many occupants or several bathrooms, both of which increase the need for hot water.

It is important to keep an eye out for the Energy Efficiency rate when buying a tank water heater. Energy Factor (EF) ratings are provided for tank water heaters and provide an indication of the heater’s overall efficiency. More efficient water heaters have higher EF ratings.


There’s a solid reason why tank water heaters have been the standard in homes for decades. Some benefits of tank water heaters include:

1. Lower Upfront Cost

Based on the size and other amenities, the price of a tank water heater can be anywhere from $500 to $1,500. Tankless water heaters, on the other hand, are a more substantial investment due to their higher price tag (often $1,000 to $4,000 or more).

The initial investment in a tank water heater may be less than that of a tankless water heater, but in the long term, you may pay more because of the increased energy required to heat the water. Compared to tankless versions, conventional water heaters use more energy to heat water, which can drive up your monthly electricity costs. 

When shopping for a water heater, it’s important to think about both the up-front cost and the savings on energy bills that you’ll accumulate over time.

2. Simpler Installation

Tank water heaters are favored by those trying to save money on labor since they are so simple to set up. However, to guarantee safety and functionality, an authorized specialist should do the installation.

During installation, a water heater must be piped in, wired up, vented correctly, and brought into conformity with local building requirements, among other things. The water in the tank is then heated to the appropriate temperature. Tank water heaters are easier to install and don’t need as many specialized parts as tankless types.

You Might Also Like:   Beginners Guide to Urban Homestead: Everything You Need To Know

3. Large Capacity

For houses that need a lot of hot water, tank water heaters are a good option. Tank water heaters normally vary in capacity from 20 to 80 gallons, but can be even bigger. 

Tank water heaters are ideal because of their high storage capacities, which allow them to heat and keep a big quantity of water for use at once. 

It is helpful for any home, but especially ones with a large number of occupants, a jacuzzi, or a soaking tub, all of which consume a lot of hot water. However, tankless water heaters may not be able to keep up with extremely high demand because of their lower flow rates.

4. Resistant To Power Outages

As long as they are hooked up to a gas line or have a standing pilot light, tank water heaters may also keep water hot during a blackout. This is because hot water may be heated and stored in a tank water heater without using any electrical power.

In the case of a blackout, a gas-powered tank water heater will keep on working so long as fuel is available. A tank water heater that uses a standing pilot light to start the gas burner to heat water can also continue to work even if the power goes off.

If you are in locations prone to power outages, or you want the reassurance of knowing that they will always have access to hot water, you may benefit more from tank water heaters.

Tank Vs Tankless Water Heaters


Although tank water heaters are often used, there are a few drawbacks that make them less than ideal. Below are some of its drawbacks:

1. Limited hot water supply

Due to its storage capacity, tank water heaters have a restricted supply of hot water. The availability of hot water is affected both by the tank’s capacity and the rate of use.

For instance, the tank can run out of hot water if several people are using it at once for activities like showering or doing the dishes.

This restriction can be especially annoying for houses with many people using hot water at once, as happens frequently in the morning and evening. Furthermore, it can be disruptive to daily routines if the hot water suddenly runs out in the middle of a shower or while washing the dishes.

2. Energy Inefficiency

Another drawback of tank water heaters is that they waste a lot of energy. These systems waste energy and lead to increased electricity costs because they constantly heat and store hot water even when it is not being used. 

In addition, the tank’s heat loss over time might necessitate turning on the system to reheat the water, which would further increase energy use.

Over time, this energy waste can have a significant effect on the environment and increase utility costs. Several modern tank water heaters have better insulation to combat this problem and increase efficiency.

3. Shorter Lifespan

Compared to tankless models, tank water heaters can have a shorter lifespan. After 8 to 12 years, a tank water heater will likely start leaking or have other problems that necessitate replacement.

A tank water heater’s shorter lifespan is mostly attributable to the fact that its storage tank is continually being refilled with water, which can cause corrosion and wear. Mineral deposits from hard water can also speed up the deterioration of the tank and other parts.

ssional installation might add up to a hefty bill when it’s time to replace your old one. Water heaters are expensive investments, so it’s crucial to think about how long you’ll need to replace yours and what kind of upkeep will be necessary.

Read also: 27 Ways To Save Water At Home

Tankless Water Heaters

Tank Vs Tankless Water Heaters

Tankless water heaters, sometimes called on-demand water heaters, are an alternative to traditional water tanks since they heat water on demand. In order to provide hot water on demand, cold water is heated in a short amount of time by passing through a heating element or heat exchanger.

Tankless water heaters are often more efficient than their storage-tank counterparts due to their elimination of the need for a storage tank. This is because tank systems waste energy and money by continually heating and maintaining a big amount of hot water. 

In contrast, tankless systems only heat water when it is really being used, which can lead to considerable energy savings over time.

Tankless water heaters may be put nearly anywhere—be it a kitchen counter, a bathroom floor, a basement, or even an external wall. It can also be fueled by either electricity or gas. Depending on the size and output of the system, they can also be utilized to supply hot water to a whole house.

You Might Also Like:   How To Use Baby Powder As Dry Shampoo; A complete guide


There are several benefits of tankless water heaters over the mo tank water heaters. The following are a few of its benefits:

1. Endless hot water supply

Tankless systems heat water as it flows through the machine, unlike tank water heaters, which have a finite supply of hot water according to the size of their storage tank.

This means that a tankless water heater can continuously produce hot water so long as the water supply is not interrupted. This is helpful for any home, but it’s especially useful for those with a big family or who have more than one bathroom.

Because there is no storage tank to fill and preheat, tankless water heaters offers hot water on demand. This is helpful for tasks like taking a shower or cleaning things that require rapid access to hot water.

Keep in mind that a tankless water heater’s flow rate is limited by its physical dimensions and the quantity of heat it can provide. You should consider your home’s hot water demands to determine the size of the unit you should purchase.

2. Energy efficiency

One of the key benefits of tankless water heaters is that they use significantly less energy than traditional tank water heaters. This is because they do not have a storage tank to keep water hot and ready to use at all times, which can lead to a lot of wasted energy.

Instead of storing water for later use in a tank, tankless systems heat water as it flows through the device, either using gas or electricity. This implies that hot water is only heated when it is needed, rather than being kept hot all day and night.

Tankless water heaters not only save money on utility bills, but they also reduce carbon footprints by consuming less energy to heat water. If you are concerned about their carbon footprint, this would be a better choice for you.

3. Longer lifespan

The longevity of tankless water heaters, in comparison to tank water heaters, is another significant benefit. The average lifespan of a tank system is between 10 and 15 years, whereas a tankless system, with regular servicing, can last for 20 years or more.

Tankless water heaters can save money in the long run since they last far better than traditional ones. The environmental costs of producing and disposing of water heaters can be lowered in this way as well.

One reason tankless systems last longer is that they don’t need a storage tank, which may rust and wear out. Furthermore, tankless water heaters often have more long-lasting components and materials, such as copper or stainless steel heat exchangers.


While tankless water heaters provide numerous advantages, there are also some drawbacks to think about. They are as follows.

1. Higher upfront cost

The initial investment in a tankless water heater is more than that of a conventional tank water heater. For homes on a tighter budget or who value a smaller initial investment, it may not be the best choice. This is because they often cost two to three times as much as tank systems.

The sophisticated technology and design of tankless water heaters necessitates more specialized components and installation, which contributes to the higher initial cost. The price of installation might go up further if the model in question necessitates alterations to the existing electrical or gas infrastructure of the house.

While tankless water heaters may have a higher purchase price, they can save money in the long run due to their reduced energy use and increased durability.

2. Limited flow rate

Unlike conventional tank water heaters, tankless models have a lower maximum flow rate. As tankless systems only heat water when it’s needed, they can’t always keep up with simultaneous uses of several hot water taps, such as when many people are taking showers or doing loads of laundry.

You Might Also Like:   How To Use Baby Powder As Dry Shampoo; A complete guide

A tankless water heater’s flow flow rate is measured in gallons per minute (GPM), and its capacity might range from one model to the next. The flow rate of smaller tankless water heaters is typically 2-3 GPM, whereas bigger units may supply 10 GPM or more.

A tankless water heater may not be enough for a big family because of the high demand for hot water. Installing many tankless is also a better option here.

3. Additional installation requirements

One potential drawback of tankless water heaters is that they might be more complicated to set up than conventional tanks. These factors may increase the labor and material requirements for setting up the unit.

Tankless water heaters, for instance, may need a separate venting system to get rid of the byproducts of their operation, although a conventional tank water heater may not. 

Moreover, the installation price might go up if the model you choose needs a more powerful gas line or electrical system.

Because of the on-demand nature of tankless water heaters, they sometimes necessitate unique pipe and plumbing setups. Due to the potential for more labor and supplies, the price of the installation might rise if these changes are made.

You should think about these extra expenses when selecting a water heater.

4. Preventative measures

Regular maintenance, such as descaling, is necessary for tankless water heaters to keep them working at peak efficiency and prevent harm from mineral accumulation. 

Problems with performance and early breakdown are possible results of neglecting routine maintenance.

Which Water Is The Best For You In The Long Run?

Tank Vs Tankless Water Heaters

Many factors, such as your hot water demands, budget, and energy efficiency goals, should be considered when deciding on the best water heater for your home in the long run. To help you choose wisely, here are some things to think about:

1. Hot water needs

A tanked water heater, which can store and give a sizable quantity of hot water all at once, is a better choice for a big home with high hot water demands. 

In contrast, a tankless water heater can save you money on your utility bills over time. This is because it only warms water as it is needed, making it a good choice for smaller households with reduced hot water demands.

3. Conservation of energy

A tankless water heater may be the most cost-effective and environmentally friendly choice if you’re worried about your energy consumption and monthly utility costs. 

Although it’s more expensive to install, tankless water heaters save operational expenses since they need less energy to provide hot water.

3. Lifespan

A tankless water heater may be the best option if you want a water heater that won’t break the bank and won’t need to be replaced often. Their lifetime is often greater than that of conventional tank systems.

4. Budget

Because of its cheaper initial investment, a traditional tank water heater may be the best choice for those on a tight budget.

5.Installation Requirements

Tankless water heaters have more complicated installation processes, but they can save you money and time in the long run if you’re ready to put in the extra effort. 

But, a conventional tank water heater may be preferable if you’d rather not deal with hassles involved in installing a tankless one.

Conclusion: Tank Vs Tankless Water Heaters

As we end off this discussion of tank vs tankless water heaters, it’s worth noting that there is no universally applicable answer. Your family’s needs, priorities, and available resources will determine which option is best.

Tank water heaters are the traditional option, and they often have cheaper initial expenses. But, they might waste energy and require frequent maintenance checks. 

Tankless water heaters, on the other hand, save space and energy. However, they are more expensive up front and have restrictions on how much hot water can be used at once.

Ultimately, you should base your decision on what is most important to you. Do you want to save money and time in the long run by paying more initially? Or do you want a cheaper alternative that doesn’t require as much work to set up?

You should think about the long-term expenses and environmental effects of your choice regardless of whatever type you choose.

Ogbo Godfrey
Follow me

Leave a Comment