Dear Monty: I will be selling my house within the next four to five years. The compressor on my A/C went out. Should I repair or replace the whole unit? The current unit is a little over 12 years old, and the compressor repair will be under warranty for one year. Prices: $2,000 to repair, $6,000–$7,000 to purchase a new unit. Monty’s Answer: There are several factors to consider in determining whether to repair or replace a home component. The factors vary depending on the element. With a compressor for air conditioning, here are the considerations. No. 1: Price Is a Factor The additional considerations below contribute to the price. Understanding the relationship between the price and the element will lead to the best decision. No. 2: The Furnace Brands Mixing brands may reduce operating efficiency. Different brands often have unique features that may not be compatible or decrease the …