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

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

Coordinated design—Your furnace is designed to run with a matching air conditioner. This might help improve energy efficiency and performance.

Technology upgrades—There have been a lot of recent increases in HVAC technology, especially in energy efficiency, air filtration and quiet heating and cooling. You’ll get these perks all year when you update the full system.

Higher heating and cooling efficiency—Efficiency ratings are based on matching equipment performance. While installing one new unit will result in better performance, efficiency will be lower from what it was envisioned to be. And your savings will not be as much as they’d be with a matched system.

Equipment age—If your air conditioner is 10 years old (or older), your heater is likely just as outdated. Switching both means you’ll enjoy many years of efficient comfort, regardless of the season.

New warranty—A new system also means you’ll receive valid equipment warranties. You’ll have peace of mind when you realize the warranty covers your total system for the same time period.

On the surface, installing just a new AC or heater might appear to be a good decision. But it’s not a very good choice when you consider decreased efficiency.

Replacing an entire system may be costlier, but you earn much more efficiency, reliability and comfort for long into the future in Waldorf.