Ratings are per hour. Divide 10,000 by 60 minutes per hour.
A tankless water heater is much more efficient as it "flash" heats the water.
An on-demand water heater heats water only when needed, while a traditional tank water heater stores and heats a large amount of water continuously. On-demand heaters are more energy-efficient and provide unlimited hot water, but they have higher upfront costs. Traditional tank heaters are cheaper upfront but less energy-efficient and can run out of hot water.
An on-demand hot water heater powered by propane offers benefits such as energy efficiency, cost savings, and endless hot water supply.
It depends on usage.
Take shorter showers, or get a tankless, "on-demand" water heater that heats the water as you use it.
Installing an on-demand under sink water heater in your home can provide benefits such as instant hot water, energy efficiency, space-saving design, and reduced water waste.
Installing an undersink on-demand water heater in a kitchen or bathroom provides benefits such as instant hot water, energy efficiency, space-saving design, and reduced water waste.
The Rheem RTEX-13 electric tankless water heater has a compact design, can provide hot water on demand, and is energy efficient. It has a maximum flow rate of 4.0 gallons per minute and requires a 240-volt electrical connection.
The most efficient heater for a water tank is a tankless water heater. It heats water on demand, only when needed, which can save energy compared to traditional water heaters that constantly heat and store water.
1- Is the piping insulated2- When was the heater serviced3- Is the heater properly sized for the fixture unit demand
It is not the square feet that determines the size water heater you need it is the demand. The more people who live in the home the higher the demand on the water heater to produce enough hot water. 1-3 people requires a 40 gallon water heater 4-6 people requires a 50 gallon water heater Of course you can make do with a 40 gallon water heater with a family of 4 or more but you will at times run out of hot water. Even if there are only 1 or 2 living in the home do not buy a 30 gallon water heater. You save very little money and may run out of hot water. But at least a 40 gallon.
At current gas prices they cost less to use and a gas heater gives you a much greater supply of hot water on demand.