Central Air Installation for Long Island Homes

Installing central air conditioning is one of the most impactful upgrades you can make to your Long Island home. With summer temperatures routinely climbing into the mid-90s and humidity levels that make the air feel even hotter, a properly designed and installed central AC system transforms your home from a sweltering box into a cool, comfortable retreat.

At Island Comfort HVAC, we have installed central air conditioning in more than 3,200 homes across Nassau and Suffolk County since 2009. Every installation begins with a Manual J load calculation, which measures your home’s exact cooling requirements based on square footage, insulation levels, window orientation, ceiling height, and the number of occupants. This calculation determines the precise tonnage and BTU capacity your system needs. An oversized unit short-cycles, wasting energy and leaving rooms humid. An undersized unit runs constantly without reaching your desired temperature. Getting the size right is the single most important step in the process.

As a Carrier Factory Authorized Dealer and Lennox Premier Dealer, we have access to the full lineup of high-efficiency systems from both manufacturers. For most Long Island homes in the 1,500 to 2,500 square foot range, we typically recommend a 2.5 to 4 ton system with a SEER2 rating of 16 or higher. The Carrier Infinity 24VNA0 variable-speed unit is our most popular choice for homeowners who want the quietest operation and the lowest utility bills. For budget-conscious customers, the Carrier Comfort series delivers reliable cooling at a lower price point while still meeting Energy Star requirements.

Long Island presents unique installation challenges that many other regions do not face. Cape Cods, split-levels, and colonials built in the 1950s through 1970s often have limited attic space for air handlers and restrictive floor plans that make duct routing difficult. Our crew has decades of combined experience working in these homes. We route ductwork through closets, soffits, and chases to deliver cool air to every room without sacrificing living space. If your home lacks existing ductwork entirely, we can install a complete duct system or recommend a ductless mini split solution as an alternative.

Every AC installation from Island Comfort includes the outdoor condenser unit, indoor evaporator coil, copper refrigerant lines, a new thermostat (programmable or smart), all electrical connections, and a complete system commissioning. We remove and dispose of your old equipment at no additional charge. Our installations carry a 10-year parts warranty from the manufacturer and a 1-year labor warranty from Island Comfort. We also offer extended labor warranty plans for additional peace of mind.

Financing is available on all installations. We offer 0% interest for 18 months through our lending partners, with longer terms available at competitive rates. PSEG Long Island also offers rebates on qualifying high-efficiency equipment, and we handle the paperwork for you.