Central Air Conditioning Installation and Replacement

Your Heating & Cooling Team Serving All Of Long Island, NY

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15 Years of Experience
Serving All of Long Island

As the temperatures rise, having a reliable central air conditioning system is essential for comfort in your home or business. At A. Monte Services, we specialize in installing and replacing central air conditioning systems, ensuring that you stay cool and comfortable all summer long.

With over 15 years of experience serving all of Long Island, our team provides top-notch service using trusted brands like Armstrong and Trane. Contact us today for reliable central AC installation and replacement services on Long Island and keep your home comfortable year-round.

Why Choose A. Monte Services?


  • Experienced Technicians
    Our team is highly trained and experienced in all aspects of central air conditioning installation and replacement.
  • Trusted Brands
    We work with leading manufacturers like Armstrong and Trane to ensure you get the best products available.
  • Comprehensive Service
    From initial consultation to post-installation support, we provide a seamless experience.
  • Local Expertise
    Serving all of Long Island, we understand the unique cooling needs of homes and businesses in this area.
Financing available through Wisetack

Financing Plans You Can Rely On

We get it: heating and cooling service can be expensive. Especially when there’s an unexpected breakdown, or you need a replacement, the costs can add up at times when we would really rather not have to deal with them. That’s why we’ve partnered with Wisetack to bring you options that can help you get the service you need without breaking the bank.

Contact Us to Apply

Our AC Services

We offer Air Conditioner installation and replacement services.

Comprehensive AC Installation Services

When it comes to central air conditioning installation, A. Monte Services delivers quality and reliability. Our experienced technicians are trained to install systems efficiently and correctly, providing you with a cooling solution that works flawlessly from day one.

Our Installation Process
  • Consultation
    We assess your cooling needs and recommend the best system for your space.
  • Selection of Unit
    Choose from top brands like Armstrong and Trane, known for their durability and efficiency.
  • Professional Installation
    Our technicians handle all aspects of the installation, ensuring optimal performance.
  • Post-Installation Support
    We provide guidance on operating your new system and offer maintenance tips.

Efficient AC Replacement Services

Is your current central air conditioning system struggling to keep up with the heat? It might be time for a replacement. A. Monte Services can help you upgrade to a more efficient system, saving you money on energy bills and improving your indoor comfort.

Benefits of Replacing Your AC
  • Increased Energy Efficiency
    Modern systems use less energy, reducing monthly utility costs.
  • Enhanced Comfort
    Newer models offer better cooling performance, maintaining a consistent temperature throughout your space.
  • Improved Air Quality
    Advanced filtration systems in new units help reduce allergens and pollutants.
  • Reliable Operation
    Say goodbye to frequent breakdowns and costly repairs with a new, dependable system.

Our Featured Air Conditioners

High-Efficiency Air Conditioners from Armstrong Air

4SCU17LE
Single-Stage Air Conditioner

4SCU17LE
Armstrong Air
Up to 16.0 SEER
  • Up to 16.0 SEER Efficiency *
  • Single-Stage Compressor
  • ENERGY STAR® Certified
  • Omniguard® Total Corrosion Protection Technology

4SHP18LX
High-Efficiency Variable-Capacity Air Conditioner

4SCU16LS
Armstrong Air
Up to 19.0 SEER
  • Up to 19.0 SEER Efficiency *
  • Pro SeriesTM Systems
  • True Variable Speed Compressor
  • Comfort Sync® A3 Enabled

4SCU23LX
High-Efficiency Variable-Capacity Air Conditioner

4SCU23LX
Armstrong Air
Up to 23.0 SEER
  • Up to 23.0 SEER Efficiency *
  • Up to 21.5 SEER2 Efficiency*
  • ENERGY STAR® Most Efficient
  • Comfort Sync® A3 Compatible
  • True Variable-Capacity Cooling

Frequently Asked Questions

How do I know if I need to replace my central air conditioning system?

Common signs include frequent breakdowns, rising energy bills, and uneven cooling. Our technicians can assess your system and recommend the best course of action.

What brands do you recommend for central air conditioning?

We trust and recommend Armstrong and Trane for their reliability, efficiency, and performance.

How long does a central air conditioning installation take?

Installation typically takes one to two days, depending on the project's complexity.

Can you help me choose the right size AC unit for my home?

Absolutely! Our experts will evaluate your space and cooling needs to recommend the perfect unit size for maximum efficiency and comfort.

Do you offer any financing options for AC installation?

Yes, we offer financing deals to help make your central air conditioning installation more affordable. Contact us for more details.

For the best central air conditioning installation and replacement services on Long Island, trust A. Monte Services. Call us today to schedule a consultation and ensure your home stays cool and comfortable all season long.

Our Featured Specials & Rebates

We always try to bring you the most affordable service available, and that includes bringing you rebates and specials so you can save.

PSEG Long Island

HVAC Instant Rebates Program

You can save energy at home by making the switch to high-efficiency heating and cooling equipment. Heating and cooling can account for nearly half the energy you use at home. If your HVAC equipment is more than 10 years old, replacing it with ENERGY STAR® certified models could save up to 20% on heating and cooling costs.*

It’s more affordable than ever to make the switch to a more energy-efficient system. Through PSE&G’s residential HVAC Instant Rebates Program, you can save up to $1,050 on eligible equipment when you work with one of our participating contractors.

Contact Us To Apply
$50 Off AC Tune-Up

$50 Off

AC Tune-Up

Cannot be combined with any other offer.

$500 Off AC Replacement

$500 Off

AC Replacement

Cannot be combined with any other offer.

$25 Off Filter Replacement

$25 Off

Filter Replacement

Cannot be combined with any other offer.

PROUDLY SERVING MT SINAI AND ALL OF LONG ISLAND, NEW YORK With Over 15 Years of Experience

Mt. Sinai

Miller Place

Rocky Point

Smithtown

Port Jefferson

Sound Beach

All of Long Island

A. Monte proudly serves Mt. Sinai and all of Long Island!
A. Monte Services
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Proudly Located in
Mt Sinai, NY

(631) 875-2966

Mon-Fri: 8AM-4PM

Emergency Service Available

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