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

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

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

Technology advancements—There have been abundant recent advances in HVAC technology, especially in energy efficiency, air filtration and quiet operation. You’ll get these benefits year-round when you improve the complete system.

Better heating and cooling efficiency—Efficiency levels are determined on matching system performance. While putting in one new unit will enhance performance, efficiency will be decreased from what it was designed to be. And your savings will not be as big as they’d be with matching units.

Equipment age—If your AC is 10 years old (or older), your heater is likely just as outdated.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.

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

It would appear replacing only your AC or furnace could appear to be a smart decision. But it’s not a great bargain when you factor in reduced efficiency.

Installing an entirely new system might be more expensive, but you earn much more efficiency, reliability and comfort for many years in Canada.