When substituting the outdoor system, should the indoor unit also be replaced?

Our response is, it’s a good approach. Here's why.

Matched design—Your furnace. This might help better energy efficiency and performance.

Technology enhancements—There have been a lot of recent increases in HVAC technology, especially in energy efficiency, air filtration and quiet running. You’ll have these advantages year-round when you update the whole system.

Better heating and cooling efficiency—Efficiency ratings are based on corresponding unit performance. While installing a single new unit will result in better performance, efficiency will be decreased from what it was designed to be. And your savings will not be as much as they’d be with matching equipment.

Equipment age—If your cooling system is 10 years old (or older), your heater is likely just as outdated. Replacing both means you’ll receive a lot of of years of efficient comfort, no matter the season.

Up-to-date warranty—A new system also means you’ll get new equipment warranties. You’ll get peace of mind when you realize the warranty defends your total system for the same period of time.

It would appear replacing only your AC or heater may appear to be a bargain. But it’s not a great decision when you factor in lower efficiency.

Replacing an entire system might be more expensive, but you get much more efficiency, reliability and comfort for many years in Girard.