Warmer days are on the way — now’s the perfect time to get your A/C ready while boosting efficiency and lowering energy costs. Take advantage of our limited-time Spring Chamber specials:

$99 A/C Tune-Up Special

$35 OFF Any Service Repair

$150 OFF a Single Unit Installation / $300 OFF a Full System Install

25% OFF Duct Cleaning

From preventative maintenance to full system upgrades and cleaner indoor air, McNally’s trusted team is here to keep your home comfortable all season long.

Don’t wait — spring appointments fill up quickly as temperatures rise!

Call today to schedule your service:

Crystal Lake: 815-344-0400

St. Charles: 630-363-9067

McNally's Heating & Cooling