About the locating the price of the defrost bar for the 4 ton york unit. I was quoted what seemed like a very unreasonable price. I will assume that you meant a local YORK dealer and I appreciate your input. I went online to YORK and entered the defrost bar and that was my first indication that I was being taken to the cleaners. Their highest price for any defrost anything was HALF of the price I was quoted by the company that installed this unit in 2000 This all started Dec. 10 with me being quoted the price and them saying it would be here in three days. I'am running off emergency or aux ,don't even know which.