AC Installation in Hockessin, Wilmington & Newark, DE


A quality AC installation isn't a matter of plopping the unit on a concrete pad and hooking up a few wires. It takes skill and experience. Through theirĀ NATE certification, our technicians have the skills. With more than 40 years in the HVAC business, we have the experience. Our technicians are well-versed with the EPA requirements associated with air conditioning installation and know how to work with refrigerant safely.


When we complete an AC installation, we are proud to use Carrier products. Well-known for using innovative technology to enhance your comfort, Carrier offers a selection of energy-efficient heat pumps and air conditioners that will provide relief from the heat for many years to come. Value and economic performance are at your fingertips when we install a Carrier comfort system.


Improperly sizing a cooling system is a frequent mistake made by inexperienced contractors. At William G. Day, we take into account the size and architecture of your home, the square footage, your lifestyle habits, passive cooling methods such as trees that are already in place, the number of doors and windows, and insulation levels. This data enables us to determine the size you need to maintain optimum comfort and provide the energy efficiency that eliminates skyrocketing bills.


At William G Day Company, we have the experience you're looking for when it comes to residential and commercial air conditioning installation for new construction. With our knowledge of climate conditions and local building codes, we can focus on the small details that enhance your comfort. Whether you choose a heat pump, ductless air conditioning or a conventional system with ductwork, our comfort specialists can design and install a system that is long-lasting, energy-efficient and affordable.


The efficiency, precision, and comfort that comes with a new HVAC installation are priceless. We have options to fit every budget, so there's no reason to need to sacrifice your comfort because of budget constraints. Installing a new system will also decrease energy bills and lower repair costs in the future.

Buying a new AC unit is a big decision that ranks close behind purchasing a home or your child's college education. That's why it's essential to choose the right contractor. At William G Day Company, we have the expertise you need at the prices you want. Contact us today at 302-427-3700 for a quality, professional installation. Our service areas include but are not limited to New Castle County, DE and the surrounding areas.