So I contacted Heat Controller about their brand to inquire as to if their Century furnaces have the exact same internals as Rheem/Ruud products.

Their Response:
"Heat Controller owns the Century brand name.
Our products are not Rheem's but are manufactured at the same location."

My Response:
"So Heat Controller's Century Furnaces have pretty much the exact same parts as Rheem Furnaces?
Is there any price difference?"

Their Response:
"Our product is sold through wholesalers and we do not control their selling prices to the public.
Concerning the components, we don't have any knowledge of what components Rheem uses. A local dealer should be able to provide pricing to you if you are interested."

Do any of you professionals have a concrete answer? I'm very curious about this.