Air Conditioning Services on Long Island
Dependable AC Installation, Repair, and Maintenance From a Team You Can Trust
For over 56 years, All Weather Heating & Cooling has helped Long Island families stay cool and comfortable through the hottest summers. As a third-generation, family-owned business operating from our Copiague facility, we bring decades of hands-on experience to every air conditioning job across Nassau and Suffolk County.
Whether you need a new AC system installed in your Massapequa home, a repair in Babylon, or seasonal maintenance in Bay Shore, our factory-trained technicians work with all major brands to deliver reliable, energy-efficient cooling solutions. We treat every home like our own — because your comfort is our family's legacy.

How Much Money can
a New Air Conditioner Save You?
Our SEER2 (Seasonal Energy Efficiency Ratio 2) energy savings calculator can help determine how much you could save on your utility bills. Simply enter your current unit’s SEER value and compare it to a newer, more efficient SEER2 unit. You can even customize it to better match your home’s system for a more accurate calculation.
When your current AC system is no longer keeping up with Long Island summers, our team will help you choose the right replacement. We install high-efficiency central air systems, ductless mini-splits, and heat pump cooling systems from brands like Carrier, Lennox, Trane, Rheem, and more. Every installation starts with a thorough home assessment at your Farmingdale, Lindenhurst, or Wantagh property so we can size the system correctly and maximize your energy savings. With available rebates up to $4,500 and flexible financing options, upgrading your comfort is more affordable than you might think.
Air Conditioning Installation and Replacement
Air Conditioning Repairs
When your AC breaks down on the hottest day of the year, you need fast, reliable service. Our technicians respond quickly to homes across Amityville, Islip, West Babylon, and surrounding communities with fully stocked trucks ready to diagnose and fix most problems on the first visit. We repair all makes and models — no matter who installed your system.
Common signs your air conditioner needs professional attention include unusual noises, weak airflow, warm air from the vents, frequent cycling, unexplained spikes in your energy bills, or water leaking around the unit. If you notice any of these issues, call us at 631-823-1648 before a small problem becomes an expensive one.
- Watch for these warning signs: unusual noises or vibrations, burning or musty odors, warm air blowing from vents, ice forming on the outdoor unit, or rising electricity costs without increased usage.
Do not wait for a complete breakdown. Regular attention to these issues helps extend the life of your air conditioning system and keeps your family comfortable.
Air Conditioning Maintenance
The best way to avoid costly AC repairs is to schedule routine maintenance. Our comprehensive tune-up service includes cleaning or replacing filters, checking refrigerant levels, inspecting electrical connections, cleaning condenser coils, and testing thermostat accuracy. Regular maintenance keeps your system running at peak efficiency, extends its lifespan, and helps you avoid unexpected breakdowns during the hottest stretches of summer in Seaford, Merrick, Bellmore, and across Long Island.
We recommend scheduling your AC maintenance each spring before the cooling season begins. Our maintenance plans are designed to give you peace of mind with priority scheduling, discounted repairs, and regular system check-ups. A well-maintained air conditioner runs more efficiently, saving you money on utility bills month after month.
Frequently Asked Questions: Air Conditioning on Long Island
How often should I have my AC serviced?
We recommend scheduling a professional AC tune-up once a year, ideally each spring before cooling season begins. Annual maintenance keeps your system running efficiently, helps prevent unexpected breakdowns, and extends the life of your equipment. Homeowners in Wantagh, Seaford, and across Nassau and Suffolk County who skip annual service often end up facing costly emergency repairs mid-summer.
What size AC system do I need for my Long Island home?
The right size depends on your home's square footage, insulation, ceiling height, window placement, and sun exposure. An oversized system short-cycles — it cools too fast, shuts off, and leaves humidity behind. An undersized system runs constantly and can't keep up on the hottest days. Our technicians perform a full home assessment before recommending any system to ensure proper sizing.
How long does a new AC installation take?
A standard central air conditioning installation typically takes one day for most homes. Ductless mini-split installations can often be completed in a few hours per zone. Complex jobs involving ductwork modifications may take longer. We'll give you a realistic timeline during your estimate so you can plan accordingly.
What are signs I need a new air conditioner instead of a repair?
If your system is over 15 years old, requires frequent repairs, uses R-22 refrigerant (no longer manufactured), or your energy bills have climbed significantly without a change in usage, replacement is usually the smarter investment. Our team will give you an honest assessment — we'll never recommend replacement if a cost-effective repair will do the job.
Does All Weather offer financing for AC installation?
Yes. We offer flexible financing options to make a new system more affordable, and available rebates can reach up to $4,500 depending on the equipment you choose. As a third-generation, family-owned business serving Long Island for over 56 years, we work with every budget to find the right solution. Call us at 631-823-1648 to learn more about current financing and rebate programs.
Ready to Stay Cool This Summer? Contact All Weather Today
From installation to repairs to seasonal tune-ups, All Weather Heating & Cooling has been Long Island's trusted air conditioning partner for over 56 years. Call us at 631-823-1648 or request service online to schedule your appointment. We look forward to keeping your home comfortable all summer long.