The other primary option for using a heating system to produce hot water is to install an indirect or indirect fired water heater.
Electric hot water heater connected to oil burner.
Then you have to power it of course.
Indirect fired water heaters connected to a boiler.
There are various ways to heat domestic hot water with oil.
Please see my other vids for burner construction and running waste oil burners.
This is a separate insulated water tank that is heated using hot water from the gas or oil fired boiler.
When you disconnect your hot water from your oil boiler it reduces the need for the boiler to cycle and burn oil in the warmer months of year.
All water heaters have one job.
Circulator pumps relays may be used if the water heater is connected to a continuous hot water loop plumbing system or in more rare cases where an oil fired water heater is being used as a building area heating device usually not code approved.
They are normally 220 volts.
This means less cost on oil for the year.
This is how i made a water heater from an old gas hot water service and converted it to run on waste oil instead of gas.
The most common types of domestic hot water heaters.
Tank style water heaters electric gas or oil tankless on demand or instantaneous water heaters.
There is of course a slight increase in your electric bill each month to run the hot water tank.
You could also preheat the water going into the water heater but after a while the coil may get clogged up and your water pressure would be suffer.
The indirect tank is usually plumbed to be a separate zone on the heating system.
You can have a heating coil inside your furnace an indirect fired water heater connected to your furnace or a stand alone oil fired hot water heater.