Can I preheat water before it goes through a tankless water heater?
The typical way to pre-warm water is to install a standard tank water heater before the tankless, but leave it turned off. Using an automotive radiator is a terrible idea. You don’t want to connect something not designed for potable water to your plumbing.
How does a water line heater work?
An electric water heater works essentially the same way as a gas water heater. It brings cold water in through the dip tube (1) and heats it using the electric heating elements (2) inside of the tank. The hot water rises in the tank and is moved throughout the home through the heat-out pipe (3).
What energy is used to warm the water before it enters the water heater?
Fossil fuels (natural gas, liquefied petroleum gas, oil), or solid fuels are commonly used for heating water. These may be consumed directly or may produce electricity that, in turn, heats water. Electricity to heat water may also come from any other electrical source, such as nuclear power or renewable energy.
How far does PEX need to be from water heater?
604.11. PEX shall not be installed within the first 18 inches (457 mm) of piping connected to a water heater.
Can I use flexible pipe for water heater?
You can use flexible gas tubes or water pipes for a gas water heater in most states. If your existing gas pipe has CSST (corroded stainless steel tubes) or has not been glued, the connection should be replaced right away.
Can you have instant hot water with a tankless water heater?
As with a point-of-use water heater that includes a tank, a tankless point-of-use water heater can provide nearly instant hot water because of its location near the fixture that needs the hot water.
Can you add a tankless water heater to an existing system?
You can fit an electric tankless water heater booster right onto your existing gas or electric tank-style water heater. It can also be mounted nearby on a wall. This is often recommended by plumbing professionals.
How close can PEX be to water heater?
PEX shall not be installed within the first 18 inches (457 mm) of piping connected to a water heater.
Can PEX be connected directly to hot water heater?
PEX can’t be directly connected to a water heater. First extend a pipe 18 in. from your water heater and connect the PEX to the pipe.
How long should it take for water to get hot with a tankless water heater?
about 15 seconds
Tankless units take about 15 seconds to bring water up to temperature, but you still have to wait for that hot water to arrive at your shower head or faucet, just as you do with a tank-type heater.
How long does it take for tankless water heater to heat water?
Basically, tankless units need 15 seconds to heat water to the set temperature, but you may still have to wait longer than that until hot water comes out of the faucet/showerhead.
How much does it cost to install an electric 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.
