They re more energy efficient than a storage tank but provide only a limited flow of hot.
Replacing a gas water heater with a tankless.
The most efficient gas tankless water heater that i could find was a bosch greentherm 9900 series unit with an energy factor.
Water heater replacement cost.
The benefits of a tankless water heater system far outweigh those of a stored water tank heater.
Tankless water heater pros and cons pros.
Now that you have decided to replace your tank hot water heater with a tankless hot water heater you will be saving as much as 100 or more annually on your water heating bills.
Get the job done right.
While your choice of water heater will cause a greater or lesser upfront cost over time this will all average out to where you end up paying about the same over five years.
Today tankless water heater energy factors range between 64 and 91 for gas fired models and up to 99 for electric models.
Rather than storing water tankless water heaters use heating coils to heat the water as you need it.
For a household of one or two people a tankless electric unit will probably be adequate.
Department of energy estimates that in homes using 41 gallons or less of hot water on demand tankless units can conserve between 24 to 34 more energy than tank water heaters.
Pros and cons of tankless water heaters.
Most gas tankless water heaters fall between 95 000 195 000 btus.
Tankless water heaters can be powered by gas or electricity but even gas powered tankless water heaters rely on an electric control panel to operate the system.
The higher the energy factor the more efficient the water heater.
Whether gas or electric tankless water heaters heat water only as it is needed and may save up to 70 percent on a yearly heating bill.
While tankless water heaters run more efficiently than storage tank water heaters replacing a tank water heater with a tankless can be expensive and the payback time can be longer than the warranty.
The average hot water heater replacement cost is 650 for a traditional whole house water heater to be installed and around 1 950 for a tankless whole home water heater.
Find a water heater professional on homeguide.
Installing a tankless water heater is a greater upfront investment but these units can significantly cut the cost of monthly utilities.