I am not sure if it was even discussed in this shape and form but I was wondering how difficult would it be to customise existing natural gas furnace by adding electric heat element. So, in other words create a custom dual fuel heat system when you can switch from natural gas to electric depending on current energy prices or any other considerations. I realize that is is not a simple question but besides the following obvious, even to me (an armature) problems and issues.
1. Finding the place in plenum for electric heat strips / element and properly mounting / installing them.
2. Modifying or finding a new control board capable of firing either one of heat sources.
3. Bringing 220 Volts 60-80 amps service to the existing natural gas furnace.
4. Wiring independent thermostat controlling electric heat only
Did I miss anything? I am sure I did and I am asking everybody how tough is the project? Did anybody accomplish anything similar to what I am describing? I understand that there is another solution, i.e. buying prepackaged electric furnace and incorporate it in existing ductwork, however it requires additional space which would be difficult to get in my case. I also wonder from the stand point of pure $$$'s consideration, which method is cheaper?
TIA for your always constructive input.
Merry Christams and Happy New Year to everybody.