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

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

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

Technology advancements—There have been many recent advances in HVAC technology, especially in energy efficiency, air filtration and quiet heating and cooling. You’ll have these advantages all year when you update the full system.

Higher heating and cooling efficiency—Efficiency ratings are formed on corresponding equipment performance. While installing one new unit will improve performance, efficiency will be decreased from what it was envisioned to be. And your savings will not be as much as they’d be with matching units.

Equipment age—If your air conditioner is 10 years old (or older), your heater is likely just as dated. Changing both means you’ll receive a lot of of years of efficient comfort, whatever the time of year.

Updated warranty—A new system also means you’ll have up-to-date product warranties. You’ll get peace of mind knowing the warranty covers your complete system for the same time period.

At first glance, getting only a new air conditioner or furnace could appear to be a bargain. But it’s not a very good bargain when you include reduced efficiency.

Installing an entirely new system could be costlier, but you get much more efficiency, reliability and comfort for many years in London.