I'm thinking... if if it goes bad aging... I should be able to junp the b and y that are side by side on the gas vaule... to see if that one is bad... they of courcs... replace it
Or junp the 2 wired one on the heat excanger side... both or nothing more then a typ of 24 v on and off switch

Thank you very much for you help... richard

I read some of your old post from 2008... that you did and do a lot of work on rheem... would you reckcomend a rheem? Or something else... I rhink rudd... NO1... makes rheem... tks...

Yes, I've had good experience with rheem. However, we now install Goodman furnaces, and have had great results with them too. It really all comes down to install when it comes to furnaces these days. A great install job can make any new furnace a good furnace, and a bad install can make any furnace a bad furnace. I work on many makes and models of furnaces and central air conditioners. Most of the new systems are very similar in design and all have their +s and -s. I feel the most important thing to take into consideration when having a new furnace installed is how quickly the installer will return to fix any problems that may arise, and taking care of warranty for the customer. And even when warranty is long gone, how dependable the original installer will be to get to you in a timely manner.