AC Repair Services - Call Now! Serving Hockessin, Wilmington & Newark, DE & Surrounding Areas

During the past several decades, air conditioning has evolved from a luxury to almost a necessity. Suffering through the heat of summer without air conditioning can be costly regarding inability to sleep and the health risks associated with contaminated indoor air.

When a heat wave hits, the last thing you want to worry about is who to call when you need an air conditioner repair. Since 1977, William G Day Company has specialized in commercial and residential AC repair in New Castle County, DE and the surrounding areas.

Air conditioners, like all mechanical equipment, need repairs from time to time. Sometimes it's a routine repair that can be handled during normal business hours. Other times, however, it's a major malfunction in the middle of the night or on the weekend. That's when it's essential that you have an experienced and licensed air conditioning company that you can trust.

We respond swiftly after receiving your call, and our skilled technicians will quickly identify the source of your problem.


We're proud of our AC repair technicians because they're the best in the business. They've achieved certification through NATE (North American Technician Excellence), a very rigorous process that only a small percentage of technicians complete. When you see the NATE logo, you can rest easy knowing that an experienced, highly trained and knowledgeable professional is handling your air conditioning repair.


When you call us for AC repairs, you won't find any surprises hidden in the fine print. We give complete, clear and accurate quotes so that you understand the problem, our recommendation, and the repair cost. We provide top-quality work, and our services are fairly priced, so we're confident that you'll be pleased.


If you're looking for a qualified, professional air conditioning company that delivers excellent service for air conditioner repairs, look no further than William G. Day. For more than 40 years, residents have relied on us to help them through their AC emergency no matter when it strikes. Our service areas include but are not limited to Hockessin, Wilmington & Newark, DE.