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Pros and Cons of a Tankless Water Heater

tankless water heater installed in a brooklyn ny home

Tankless water heaters have grown in popularity over the years. Known for their ability to save you money in energy savings, these units provide an on-demand style of operations – only turning on when you use hot water inside your home.

But, as with any purchase, there are both pros and cons for tankless water heaters. The Brooklyn plumbing experts at Petri Plumbing & Heating are here to provide you with the information you need to determine if a tankless water heater is right for you.

Tankless Water Heater Pros

Highly Efficient

As previously stated, tankless water heaters are much more efficient than their traditional counterpart. According to the Department of Energy, homeowners will save 27% to 50% more in energy savings with a tankless water heater. The savings are created because the water heater only turns on when hot water is running from the tap or appliances are in use.


If space is a concern for your family, tankless water heaters may be for you. As the name implies, these units do not require a tank to operate, leaving much more room to work with. These units are typically mounted to a wall, leaving more room around the water heater.

Unlimited Hot Water

If you have a big family, you know that running out of hot water can be a concern. For example, if three people take a shower consecutively, there is a chance that the fourth person taking a shower will be bathing in cold water. Tankless water heaters solve that problem. While there is a chance to run out of hot water if multiple appliances are being used at once, you won’t have any issues if these things are down consecutively – i.e., if three people take a shower one right after the other.

Tankless Water Heater Cons

High Upfront Costs

Tankless water heaters have a higher upfront investment than traditional water heaters. These units can be as much as three times more expensive initially than tank-style water heaters. The cost of a tankless water heater, including installation, can be as high as $3,000.

Limited Hot Water Flow

When running appliances simultaneously, the amount of hot water within a tankless unit is limited. Tankless water heaters cannot keep up with the flow if hot water is being used in multiple areas at the same time.   

Need for Additional Equipment

In some cases, additional equipment may be required to maximize the benefit of having a tankless water heater. Hard water can put a strain on the unit and make it more likely to break down. Because of this, a water softening system may be required to keep the unit under warranty.

Brooklyn Water Heater Pros

These are just a few pros and cons for tankless water heaters. If you would like more information on tankless water heaters or need help with one you currently own, give our Brooklyn water heater experts a call!

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