Okay, here’s one title option following your rules:
Find the best central air conditioning systems Cool the Home Efficiently (Save Energy & Money!)
Here’s an excerpt capturing that:
“This summer heat is no joke. Feeling pinned by rising temps? Your current setup might just be adding to your monthly costs. Find relief without the bill! Discover efficient central AC systems designed not only for powerful relief but also to cut energy use and save the pennies. Find the optimal balance of comfort and savings.”
(Character count approx 186)