- 1 What size tankless water heater do I need for a family of 5?
- 2 What is the downside of an electric tankless water heater?
- 3 Do you need 2 tankless water heaters?
- 4 Can you put 2 tankless water heaters in series?
- 5 Can a tankless water heater fill a tub?
- 6 Can you run out of hot water with a tankless water heater?
- 7 Is it worth switching to a tankless water heater?
- 8 Why is tankless water heater installation so expensive?
- 9 How do I know what size tankless water heater I need?
- 10 How much does it cost to switch to a tankless water heater?
- 11 What are the electrical requirements for a tankless water heater?
- 12 What is the best brand for tankless water heaters?
- 13 Can you connect two hot water heaters together?
What size 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.
What is the downside of an electric tankless water heater?
Tankless water heaters produce an endless supply of hot water, take up less space, have a lower risk of leaking, are safer, and have a significantly longer lifespan on average. The main disadvantage of tankless water heaters is their upfront cost (unit and installation) is significantly higher than tank-style heaters.
Do you need 2 tankless water heaters?
For larger households that typically use more than 85 gallons per day, two tankless systems, or the largest available model, are likely needed. For smaller households that use under 40 gallons per day, one unit should suffice. They are miniature tankless water heaters designed for use at one outlet, such as a sink.
Can you put 2 tankless water heaters in series?
Tankless electric water heaters can be installed in series. Two Titan N-120 water heaters create very hot water, even at high flow rates during the winter.
Can a tankless water heater fill a tub?
A small tankless water heater can take a long time to fill a large tub. Two smaller water heaters can do the job of one big water heater.
Can you run out of hot water with a tankless water heater?
With a tankless system, there isn’t a supply of hot water that can be depleted. Instead, the water heater heats up water as there is a demand for it. It will keep doing this as long as there is demand – and that means you won’t run out of hot water!
Is it worth switching to a tankless water heater?
The big advantage of tankless water heaters is that they use less energy since they only heat up water when you need it. You can save hundreds on your energy bill each year. According to Consumer Reports, you should expect to pay about $800 to $1,500 or more to have your tankless water heater installed.
Why is tankless water heater installation so expensive?
Installation is expensive because the unit needs a bigger gas supply than a conventional water heater does, and it needs to run its own exhaust flue to the exterior. Installation costs can vary widely, depending on the location of the flue and the gas supply. The unit itself costs between $800 and $1,000.
How do I know what size tankless water heater I need?
How to Select the Right Size Tankless Water Heater
- Determine the maximum number of devices you want to run and their total flow rate. Then, add up their flow rates (gallons per minute).
- Determine required temperature rise.
- Sizing Example: An average shower will be between 104–106° and uses 2.6 gallons of water.
How much does it cost to switch to a tankless water heater?
An electric tankless unit will cost about $500 to $700, roughly the same as a traditional tank model, while the cost of a gas tankless heater runs about $1,000 to $1,200. Beyond the initial cost, the national average for the installation of a tankless unit is slightly over $1,700.
What are the electrical requirements for a tankless water heater?
Unfortunately, the average electric tankless water heater needs at least 120 amps to operate and the average household’s total capacity is 200 amps. This means you will have to upgrade your electrical system to accommodate for the larger load demand, which could cost you up to $1,500.
What is the best brand for tankless water heaters?
Our Top Picks
- BEST OVERALL: Rinnai RU160iN. The capabilities of the Rinnai RU160iN are impressive.
- RUNNER UP: Rheem 240V Tankless Water Heater.
- BEST ELECTRIC: Stiebel Eltron Tempra 36 Plus Tankless Water Heater.
- BEST PORTABLE: Hike Crew Portable Propane Water Heater.
- BEST POINT OF USE: ECOTOUCH Tankless Water Heater.
Can you connect two hot water heaters together?
Equipment being equal, two or more heaters connected in parallel will deliver more hot water than the same heaters connected in series. In a parallel configuration, the hot water demand is taken equally from each unit. Each heater will then perform the same amount of work to heat the cold water.