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

Our answer is, it’s a smart method. Here's why.

Paired design—Your furnace is created to work with a matching air conditioner. This may help enhance energy efficiency and performance.

Technology advancements—There have been a lot of recent improvements in HVAC technology, especially in energy efficiency, air filtration and quiet operation. You’ll have these benefits year-round when you upgrade the complete system.

Improved heating and cooling efficiency—Efficiency ratings are formed on matched equipment performance. While getting one new unit will improve performance, efficiency will be lower from what it was engineered to be. And your savings will not be as large as they’d be with matching units.

Equipment age—If your cooling system is 10 years old (or older), your heater is likely just as outdated.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

Up-to-date warranty—A new set of units also means you’ll have valid system warranties. You’ll have peace of mind when you know the warranty protects your complete system for the same time period.

At first glance, getting only a new AC or heating system might seem like a bargain. But it’s not a very good bargain when you consider decreased efficiency.

Getting an entirely new system could be costlier, but you receive much more efficiency, reliability and comfort for many years in North America.