Is it worth fixing a 20 year old air conditioner?

Your air conditioning unit is older than its lifespan Just as it doesn't make financial sense to repair an old car that breaks down all the time, spending money on an old air conditioning unit is like throwing money down the drain. If your air conditioner is more than 15 or 20 years old, it's wise to buy a new air conditioner instead of repairing it. The average lifespan of an HVAC system is 15 to 20 years, but as these systems age, they tend to become less efficient. If your HVAC is more than 10 years old, consider replacing it with a more energy efficient unit, such as one that has earned the ENERGY label STAR.

These high-efficiency units can save up to 20 percent on heating and cooling costs. Repairing an older system is also more expensive and does not guarantee an extended life of the system. Repair Costs If your unit has minor problems, such as a clogged drain pipe, the ideal is to opt for a repair, as the costs are likely to be cheaper than those of buying a new air conditioning system. While replacing an HVAC unit is a major investment in your home, it may make more financial sense if, over time, it will save you money on repairs and utilities.

The classic signs that your air conditioner cannot be repaired are its increasing inability to cool and dehumidify the space, the overwhelming energy it consumes and the resulting monthly electric bill, and the incessant amount of repairs it requires to keep running.