What Are Tankless Water Heaters?


Tankless Water Heater Installation in Philadelphia

When it comes to providing hot water for your home, there are several options available. While traditional tank water heaters are most common, tankless water heaters are quickly gaining popularity. Our plumbing professionals at Reliable Plumbing & Drain Cleaning are here to guide you through what tankless water heaters are, how they work, and the benefits they can offer for your home. 

Understanding Tankless Water Heaters

Unlike traditional water heaters, which store and heat water in a large tank, tankless water heaters (also known as on-demand or instantaneous water heaters) heat water directly as it flows through the unit. They eliminate the need for a storage tank and deliver hot water whenever needed, hence their alternative name – “on-demand.”

How Do Tankless Water Heaters Work?

When you turn on a hot water tap, cold water travels through a pipe into the unit, where either a gas burner or an electric element heats the water. Consequently, tankless water heaters deliver a constant supply of hot water, with no waiting for a storage tank to heat up.

Types of Tankless Water Heaters

There are primarily two types: whole-house units and point-of-use units. Whole-house heaters are capable of handling the hot water demands of an entire home, while point-of-use heaters are smaller and only heat water for one or two outlets, like a single bathroom or kitchen sink.

The Benefits of Going Tankless

Energy Efficiency

Tankless water heaters are generally more energy-efficient than traditional models because they eliminate the need to maintain a tank of hot water, reducing standby energy losses.

Longer Lifespan

On average, tankless units last longer than traditional water heaters. While the typical lifespan of a traditional water heater is 10-15 years, tankless models can last up to 20 years with proper maintenance.

Space-Saving Design

Without the need for a bulky storage tank, tankless water heaters take up significantly less space, offering more flexibility in installation locations.

Unlimited Hot Water

As long as the unit is working within its capacity, you can enjoy hot water whenever you need it – no more timing your showers or laundry around the water heater’s schedule!

Considerations Before Going Tankless

While tankless water heaters offer numerous benefits, they may not be the best fit for every household. They have a higher upfront cost, and retrofitting a house with a tankless system may require significant changes to your plumbing system and electrical service. Also, they may not be able to keep up with simultaneous, high-demand uses in larger homes.

Install A Tankless Water Heater in Your Philadelphia Home Today!

Tankless water heaters are an efficient and modern approach to providing hot water in your home. However, it’s essential to assess your home’s needs, your budget, and the potential energy savings before making a decision. At Reliable Plumbing & Drain Cleaning, our team is ready to guide you through your options and find a solution that works best for you. Contact us today for tankless water heater installation in the Philadelphia area!

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Reasons to Choose Reliable Plumbing

Plumbing, HVAC drain cleaning contractors serving Philadelphia, Bucks and Montgomery Counties


As a LICENSED MASTER PLUMBING COMPANY, we have the technical skill and over 20 years experience in the field. That means we get the job done right the first time, every time.

Trying to do plumbing work yourself can be a hassle. Leave it to the professionals to handle all your plumbing jobs. We are FAST, RELIABLE & AFFORDABLE. No job is too big or too small.




since 1994


I had issues with a leak underneath my sink. Mark was friendly and informative. He had my issue resolved in an hour at a very fair price. Even gave me advice on some basement hvac upgrades that can improve my water heaters lifespan. Will always use reliable plumbing for all my future issues.

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