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

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

Coordinated design—Your furnace. This might help improve energy efficiency and performance.

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

Better heating and cooling efficiency—Efficiency rankings are based on matched unit performance. While adding a lone new unit will improve performance, efficiency will be lacking from what it was engineered to be. And your savings will not be as much as they’d be with matching equipment.

Equipment age—If your air conditioner is 10 years old (or older), your furnace is likely just as outdated. Replacing both means you’ll receive many years of efficient comfort, whatever the weather.

New warranty—A new set of units also means you’ll have new product warranties. You’ll receive peace of mind knowing the warranty covers your whole system for the same amount of time.

On the surface, installing just a new air conditioner or furnace can appear to be a smart decision. But it’s not quite a good bargain when you factor in lower efficiency.

Replacing an entire system may cost more, but you earn much more efficiency, reliability and comfort for many years in Gaithersburg.

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