Serving Suffolk & Nassau County · Long Island, NY

[email protected]631-331-2102
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A1 Heating & Air Conditioning
631-331-2102

Cooling Services

AC Installation
Long Island.

Expert central air conditioning installation and replacement throughout Suffolk and Nassau County. Free in-home estimates — no pressure, no surprises.

Get a Free Estimate 631-331-2102

What we install

New AC Systems
Installed Right.

Whether you're replacing an aging system or adding central air to a home that never had it, A1 handles the full installation — from system selection and sizing to ductwork and final testing. We're an authorized Lennox dealer and install all major brands.

Central air conditioning installation
AC system replacement & upgrade
Ductless mini-split installation
Heat pump installation
Ductwork design & installation
New construction AC systems
High-efficiency SEER system upgrades
Free in-home estimates

Why upgrade your AC?

Lower monthly energy bills with high-efficiency systems
More consistent, even cooling throughout your home
Quieter operation with modern equipment
Better humidity control and indoor air quality
Financing options available — 0% interest promotions

Free estimate

Ready for a new AC system?

We'll assess your home and give you honest, upfront pricing. No pressure, no surprises.

Get a Free Estimate

Common questions

AC Installation FAQs

How much does central air installation cost on Long Island?

The cost of central AC installation depends on the size of your home, the system selected, and whether ductwork is needed. We provide free, no-obligation in-home estimates with upfront pricing — call 631-331-2102 to schedule yours.

How long does AC installation take?

A standard central AC replacement typically takes one day. New installations requiring ductwork may take two to three days. We'll give you a clear timeline before we start.

What size AC system do I need for my Long Island home?

The right system size depends on your home's square footage, insulation, ceiling height, and sun exposure. An undersized or oversized system will be inefficient and uncomfortable. We perform a proper load calculation to recommend the right size.

What AC brands do you install?

We are an authorized Lennox dealer and also install Carrier, Trane, Daikin, Mitsubishi, and other leading brands. We'll recommend the best system for your home and budget.

Do you offer financing for new AC installation?

Yes. We offer flexible financing options including 0% interest promotions on qualifying new system installations. Ask about current offers when you call for your free estimate.

Free in-home estimates

New AC Installation on Long Island

Contact us today for a free, no-obligation estimate on a new central air conditioning system.

Request a Free Estimate 631-331-2102