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

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

Coordinated design—Your furnace is designed to run with a corresponding air conditioner. This may help better energy efficiency and performance.

Technology upgrades—There have been abundant recent improvements in HVAC technology, especially in energy efficiency, air filtration and quiet running. You’ll receive these perks year-round when you update both units.

Better heating and cooling efficiency—Efficiency levels are based on matching equipment performance. While getting a lone new unit will enhance performance, efficiency will be lower from what it was designed to be. And your savings will not be as big as they’d be with a matched system.

Equipment age—If your cooling system is 10 years old (or older), your furnace is likely just as outdated. Switching both means you’ll receive a lot of of years of efficient comfort, whatever the time of year.

Updated warranty—A new set of units also means you’ll get new equipment warranties. You’ll get peace of mind knowing the warranty protects your whole system for the same period of time.

At first glance, getting only a new air conditioner or heating system can feel like a bargain. But it’s not a very good decision when you consider lower efficiency.

Installing an entirely new system might be costlier, but you receive much higher efficiency, reliability and comfort for years to come in Raleigh.