Skal7713
New Member
I just bought a home which has a summer winter oil boiler system for hot water. Historically between March and September oil use has been about a gallon/day heating hot water in a home for two people. I really want to replace it with an electric tank-less though it is difficult to find good data on whether this would be more efficient. Here are some points I am considering. Feel free to comment on any points as I am looking for advice:
1) This is a 3 bedroom house, and even though only I am here I would like whatever system is installed to scale to future occupants if it is a larger family. There is only 1.25 Baths plus Kitchen with dishwasher and a washing machine to compete at once for hot water. Which system would be adequate for this scenario.
2) I am limited to a currently installed 100 Amp breaker box. The power company will bring free of charge a 200 or higher amp service to the house. Is there a creative way to add another box to allow for the higher amp service coming in and provide for the electrical draw of a tank less electric water heater without having to replace the entire 100 Amp box with a 200 or greater box?
3) Is there a good practice for installing the tank-less heater in such a way that in the winter when the furnace is on, I could still preheat hot water in the boiler which is running anyhow and then feed the tankless water heater and make this work?
4) Given these factors is there a formula to calculate whether I will save money on energy costs?
Thanks in advance for any advice. I realize this topic spans the scope of the different forums since it is both about the electric tankless and the summer/winter oil burner boiler.
Skal7713
1) This is a 3 bedroom house, and even though only I am here I would like whatever system is installed to scale to future occupants if it is a larger family. There is only 1.25 Baths plus Kitchen with dishwasher and a washing machine to compete at once for hot water. Which system would be adequate for this scenario.
2) I am limited to a currently installed 100 Amp breaker box. The power company will bring free of charge a 200 or higher amp service to the house. Is there a creative way to add another box to allow for the higher amp service coming in and provide for the electrical draw of a tank less electric water heater without having to replace the entire 100 Amp box with a 200 or greater box?
3) Is there a good practice for installing the tank-less heater in such a way that in the winter when the furnace is on, I could still preheat hot water in the boiler which is running anyhow and then feed the tankless water heater and make this work?
4) Given these factors is there a formula to calculate whether I will save money on energy costs?
Thanks in advance for any advice. I realize this topic spans the scope of the different forums since it is both about the electric tankless and the summer/winter oil burner boiler.
Skal7713