We have two Jenn-Airs, both electric. (Main home in AZ and vacation home at Lake Tahoe)

Jenn-Air #1 - slide in combo oven/4 burner range style unit. As mentioned in previous comments above, the burner units can be swapped around and interchanged. We have a grill, a griddle and 2 of the older fashioned circular "burners". Advantage to the older style burners, you can put any size pot on and have (dare I say it) intimate contact burner/pot. While this type of burner doesn't look as nice, it works well.

Jenn=Aire #2, countertop 4 burner unit with ceramic burner inserts. Looks prettier, harder to keep clean though. One problem is the raised border around the double burner unit keeps larger pots (corn, lobster, etc.) from coming in direct contact with the burner...longer heating time required. In this house we have a wall mounted oven (wish there were two) with the convection feature. I'd recommend the Convection type for more even baking and roasting.

Also LF, one feature of Jenn-Aires that you need to consider is the exhaust fan located between the two burner units (both on the stove-top and the range top). This fan has to be exhausted to the outdoors via ducting. Our Jenn-Aire #1 goes through the wall and out. #2 has a 15 foot run through the floor and thence to the outside since it is mounted in a island counter.

Both units are doing well with minimum maintenance or spare parts required over the years.

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There's snow on the roof but the fire still burns in the oven.