I have a 50yr old furnace. Bill Howe was able to locate and replace all the old parts. Valves, lines,switches and more. The tech #496 was very nice and helped me understand why the parts cost so much, which is only a couple of companies make them and they charge three to four times what they should be. Also i was able to get a senior discount but remember to ask for it. It seems to be a company rule to not advise the customer they are qualify for the discount. At the end he told me i basically have a new furnace and they don’t make them like ours anymore. Thankyou again.