Pat Keegan and Amy Wheeless

If you have an aging central air conditioner — even if it’s still working — it might pay off to look into replacing it sooner rather than waiting until it fails.

Replacing an inefficient AC unit with a more efficient model could significantly reduce your electric bill; new units are likely to be 20 to 40 percent more efficient than one from the 1990s. ENERGY STAR-certified systems are even more efficient. Replacing an aging system now, before summer starts, could help you avoid delays or price premiums.

Dear Pat: We have two kids, which means we do a lot of laundry — it never ends! What are some ways we can reduce our energy use in the laundry room?  – Frank

Dear Frank: The average American family washes about 300 loads of laundry per year — all that laundry uses a lot of energy! However, there are some easy ways to reduce your energy use in the laundry room.