Has anybody converted burb rear AC to

[mr wonderful]

I want to convert my rear AC unit to heat in my 86 suburban. Any ideas? Thanks..

 

[72chevy2door]

Suburbans and Blazers ha a factory option for rear heat. It was basically a blower motor and heater core mounted to the far passenger rear corner (next to where the a/c lines come up through the floor) it's expensive to put it in if ordering the parts from LMC. Although I'm sure you could just get some 3/4 and 5/8 steel pipe bend it to the same path of the A/C lines and then pull the A/C interior cover and find a heater core the same size and swap it out it would work. Just basically swap the A/C stuff to heater stuff. I would imagine time consuming but simple for the most part.

 

[bucket]

It could probably done without too much trouble, but remember, heat goes up. If it starts up high, it's not going to actually heat anyone very well. The floor heater kits can still be found.

 

[89Suburban]

I would tend to think you would not want to have the rear heater core mounted higher than the radiator opening. Also, you would have to split the flor of coolant and have a way to control that flow. IMO if you just simply put in a "Y" split without any way to control the flow i would think the flow of coolant coming from the motor would flow the path of least resistance and mainly flow trough the front core. I may stand to be corrected on that theory. have 2 of the factory rear heat units. There is also a control valve to split and divert coolant to the front or rear heater core as needed. That sucker is expensive. There are plenty of aftermarket units tough. I am just wondering how well they really work. That coolant has to try and flow pretty far to get for he rear of one on these beasts. You would figure a lot of heat would be lost on its trip back there.

 

[bucket]

I would tend to think you would not want to have the rear heater core mounted higher than the radiator opening.

Very good point.

 

[mr wonderful]

I had an 88 burb with the factory rear heat,it worked great but
Way too vulnerable. Yes,the heat up high might not be the best,but it's
Coming out from behind the backseat anyway.