Can you use a tank and tankless water heater combination?

Takagi Tankless Water Heaters can be used as an indirect water heater in conjunction with a storage tank for high volume situations. The Storage tank should be 30 gallons or larger and must always be set at least 5 degrees below the Takagi Tankless Water Heater.

Can you have two water heaters one house?

Note: Both water heaters must be ON, and set to same temperature. If one heater is off, then it will add cold water to the line while other water heater supplies hot. This means a malfunction in one heater will impact hot water supply and a timer cannot be added to one heater but not the other.

Do you need a pressure tank with a tankless water heater?

If you have a tankless water heater, you don’t have to worry about an expansion tank because you don’t have a primary tank to begin with. However, if you have a traditional tank-style water heater, you will most definitely need to consider if an expansion tank is needed.

Can I preheat water before it goes through a tankless water heater?

Winter time, customer discovers tankless can not heat water fast enough, but increasing thermostat setting on tankless causes unit to shut down. Tempering tank can solve problem by pre-heating water before it reaches tankless.

Can you run hot water into a water heater?

While tank water heaters store heated water to be sent to a faucet upon request, a tankless water heater starts working after the request is made. When a hot water tap is turned, cold water travels through a pipe into the tankless water heater, which then heats the water with an electric element or gas burner.

Can you put tankless water heaters in parallel?

This shows a parallel installation of tankless water heaters. The use of heaters in parallel increases the heating capacity of the system while maintaining a higher flow rate with lower pressure drop through the heater.

Do I need more than one tankless water heater?

In most cases, you need only 1 tankless heater for an entire house. However, if you really have a big house (2+ bathrooms), even the big 11 GPM Rinnai gas tankless water heater will not be enough to satisfy all your simultaneous hot water needs. The big tankless heater takes care of the most hot water needs.

What size tankless water heater is needed for a family of 4?

What Size Tankless Water Heater Do I Need For A Family Of 2, 3, 4, 5, Or 6?

Number Of Family Members:	Gas Tankless Heater Size (GPM)	Electric Tankless Heater Size (kW)
What size tankless water heater do I need for a family of 3?	7-9 GPM	15-23 kW
What size tankless water heater do I need for a family of 4?	8-10 GPM	20-28 kW

Can a tankless water heater fill a tub?

With tankless, you can fill a large tub and enjoy a nice bath. You’re not ever going to run out of hot water.” He says usually the tankless water heaters are used to supply the entire home, including the bathrooms.

Is a expansion tank required by code?

The California Plumbing Code (Section 608.3) and the California Mechanical Code (Section 1005.0) requires a thermal expansion tank, or listed equivalent, to be installed to water heating systems to relieve excessive building pressure during the heating process.

Why use tankless water heater?

Tankless water heaters are capable of supplying more hot water than a tank water heater which has a stored total capacity. Exceed this capacity of stored hot water and you need to wait for another tank to heat.

Are tankless water heaters better?

Saves money in the long run – According to Energy.gov, “For homes that use 41 gallons or less of hot water daily, demand (or tankless) water heaters can be 24\%–34\% more energy efficient than conventional storage tank water heaters.”.

How do tankless water heaters work?

Tankless water heaters are said to be instant or on demand water heaters that provide you hot water anytime you want. It does not store any water in it (as it doesn’t have a tank) to keep it hot. It works on the basic pipe principle that allows water to be hot just by turning on the cold water side of the tap which should be connected to the heater.

What is a demand water heater?

On-demand water heaters warm water as it’s needed, and they’re different from a standard tank water heater. A water heater with a tank heats water to a set temperature, but as cold water enters the tank, the water temperature gradually drops, and eventually you run out of warm water.