Is a tankless water heater good for a large family?

From a comfort standpoint, a tankless model can ensure hot showers for the whole family, enough warm water for dishes and laundry and a restful soak in a warm bath after a long day at work.

What is the downside of a tankless water heater?

The main disadvantage of tankless water heaters is their upfront cost (unit and installation) is significantly higher than tank-style heaters. Including installation, tankless water heaters cost 3 times more than tank-style water heaters on average.

How big of a tankless water heater do I need for a family of 5?

In short, a family of 5 would need a 10 GPM gas tankless heater or 27 kW electric tankless heater if you live in the northern part of the USA, where the input water has a lower temperature. The tankless heater has to work extra hard to bring the water temperature up to 110˚F or 120˚F.

Can you use a tankless water heater for the whole house?

Built with scale-reduction technology, both electric tankless and gas tankless whole-house water heaters perform with high efficiency and are built to serve a wide range of applications. A whole-house tankless water heater is built to provide continuous hot water whenever you need it.

Is it worth getting a tankless water heater?

While these systems are more expensive, they are also more efficient. In fact, Consumer Reports indicates that tankless water heaters are 22% more efficient than standard models. The monthly savings might be nominal, but homeowners can expect to save hundreds of dollars annually.

Is it worth switching to a tankless water heater?

More About Energy (and Money) Savings

of Energy, a tankless water heater is more efficient and uses less energy than a conventional water heater, providing a $25 to $107 in annual savings. If your hot water use is low (less than 41 gallons per day), a tankless water heater will be 24% to 34% more efficient.

What size tankless water heater do I need for a family of 4?

A family of 4 should look for a tankless water heater that can produce 7 gallons of hot water per minute. Most families use about 6.5 GPM during peak times. To determine the tankless water heater size, you'll need to know how many appliances your family will use simultaneously.

How far does a tankless water heater need to be from a window?

A tankless water heater requires a 4-foot clearance from the side or below a door or window that opens, unless the unit is directly vented to the outside. If the water heater is installed above the door or window, it needs 12 inches of clearance.

How do I keep my tankless water heater from freezing outside?

How to Prevent Your Tankless Water Heater from Freezing

1. Install Your Water Heater in a Warm Place. ...
2. Drain Your Water Heater. ...
3. Maintain a Power Source. ...
4. Consider a Recirculation System. ...
5. Insulate, Insulate, Insulate. ...
6. Run a Trickle of Water.

What is better tankless or tank water heater?

According to Energy.gov, “For homes that use 41 gallons or less of hot water daily, demand (or tankless) water heaters can be 24% to 34% more energy efficient than conventional storage tank water heaters.” Tankless water heaters (if gas-fired) will save homeowners over $100 annually the longer they remain in service.

Can you oversize a tankless water heater?

As suggested when selecting a tank-type heater, you don't want to buy an oversized or undersized tankless water heater, as it will result in unnecessary issues such as the rising upfront price, operating costs, and wasted water, and energy - affecting your budget and time.

How many bathrooms can a tankless water heater support?

For a home with 1 bathroom, we recommend 6-7 GPM; 2 bathrooms, 8 – 9 GPM; and 3+ bathrooms, 9-11 GPM. In our experience, smaller 4-5 GPM units are suitable for studio apartments and small one bathroom homes or other application specific needs.

What is the lifespan of a tankless water heater?

Most tankless water heaters will last for up to 20 years or more, which is a long lifespan in comparison to tank water heaters, which last around 10–15 years. Tankless water heaters use new technology that helps them to stay functional and operational for much longer than some of the alternatives out there.

Can I replace my hot water heater with a tankless?

Absolutely! In fact, tankless water heaters are becoming the standard for new home construction because of the energy efficiency. Newer tank water heaters have a UEF (Uniform Energy Factor) rating of 0.70 compared to your standard tankless water heater that has a rating of 0.94.

Can a tankless water heater explode?

Because there is no tank which can overheat or experience a massive spike in pressure, a tankless system doesn't have the danger of bursting or exploding. A tankless system is also a safer device to have with children around.

Can I vent my tankless water heater into chimney?

The tankless heater cannot share vent piping with any other appliance, and it cannot use a masonry chimney flue for venting. Special stainless steel pipe. The vent pipe must be made of stainless steel designed for venting corrosive gases.

Can a tankless water heater be installed in a cabinet?

Tankless water heaters can be installed anywhere inside your home. You can even have a tankless water heater in a bathroom! Some families with larger homes choose to install two, one for each floor, for example. Because of their small size, they fit in closets, cabinets, pantries or laundry rooms.

How do I choose the right size tankless water heater?

How to Select the Right Size Tankless Water Heater

1. Determine the maximum number of devices you want to run and their total flow rate. Then, add up their flow rates (gallons per minute). ...
2. Determine required temperature rise. ...
3. Sizing Example: An average shower will be between 104–106° and uses 2.6 gallons of water.

How many gallons of hot water does a shower use?

A shower uses approximately 10 gallons of hot water per shower. A dishwasher uses 6 gallons during every use, while hand washing uses 4 gallons per wash, and shaving uses 1 to 2 gallons per shave.

How long does it take to install a tankless water heater?

Additional time is required to install new power and water lines and air vents. Afterward, the tankless unit must also be mounted and connected. Tankless to Tankless Installation: This generally takes between one to three hours.

What is the largest size tankless water heater?

If your required temperature rise is 70 °F, a large tankless gas water heater can supply 5.0 – 5.5 gallons per minute. The largest electric unit (36 kW) maxes out at little more than 3.0 gpm.

Is a 50 gallon water heater enough for a family of 5?

If you do decide to go with a tank water heater, the size of your family will be one factor that dictates the size of the tank that you go for. A general way to estimate what size of tank you'll need is to add 12 gallons per family member. So a 50-gallon tank would be adequate for the average family of 2–3 children.

What happens if your water heater is too big?

When your tank water heater is too big for your home, you have ample hot water, but issues occur in other areas. An oversized water heater heats more hot water than your household needs, which wastes energy.

Is a 50 gallon water heater too big?

You can estimate the necessary tank capacity (in gallons) based on the number of people in the house: 1 or 2 people—23 to 36 gallons. 2 to 4 people—36 to 46 gallons. 3 to 5 people—46 to 56 gallons.