NORA Video 5, Primary Controls, Part 1

[@NORAoilheatvideos]

Understand your point. However, new technology improves efficiency and can save thousands a year.

[@ThePete2432]

As long as the heat exchanger is good, I'm fixing whatever's wrong. With oil burners, an upgrade solely for efficiency improvement is a bad idea... the new unit will be dead before you make your money back.

[@mbungufamilytv4846]

Thank you Nora

[@teddbrown4262]

Stack switches have not been used for over ten years

[@sirhc07]

I still run into them every once in awhile even the sid Harvey's I go to sells remanufactured ones