By Denise Koch

BALTIMORE (WJZ) — Most of us are running air conditioners on full blast.

Denise Koch reports it’s a good time to remind us to change our air conditioning filters once a month.

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Dirty filters can restrict air flow and could cause the coil in your air conditioner to freeze.

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By changing the filters once a month, you could save up to 5 percent on your cooling costs.

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