Water Heater - Oil Fired Horizontal water heater provides instantaneous and continuous hot water in a small package featuring a built in fuel tank. The fuel source can be diesel or kerosene. We can build a heater to meet your needs, using your preferred fuel source. Hot water heaters from Alkota feature our industry leading hydro insulated coil. The hydro insulated coil provides user safety and well as money saving performance. Alkota hot water heaters (210WH) protect you with a 7-year coil warranty. Horizontal water heaters have many different applications we would love to talk about new ideas and put an Alkota water heater to work for you. With the support of your local Alkota dealer we can find the correct solution for you.