Long Island, NY Central Air Conditioning Specialists 

30+ Years of Central AC Expertise 

Summers on Long Island aren’t just warm; they can be downright unbearable with heavy humidity that seems to seep into every corner of our homes. 

Staying comfortable? That’s where we come in. The challenge, of course, is that Long Island’s homes are as unique as its neighborhoods. Older properties in Nassau with narrow layouts and vintage construction materials can make modern updates tricky. Suffolk’s spacious homes come with their own quirks, like ductwork snaking through oversized attics or uneven cooling across wide-open layouts.

Our team of skilled HVAC professionals is ready to tackle it all. Whether it's a new central AC installation, a full system overhaul, or just routine maintenance, we ensure your home stays cool and feels just the way you want it.

Cool comfort is a call away! Contact us online or at (516) 347-7696 for a free estimate or to book service! We service HVAC systems across Long Island, including Wantagh and areas throughout Nassau and Suffolk Counties.

What Is Central Air Conditioning? 

Unlike window units, which can be noisy, inefficient, and an eyesore, central AC systems provide a more effective and seamless way to cool your home. Using a network of vents, central air conditioning distributes cool air evenly throughout your entire living space.

The system is made up of two primary components: a condenser, which is installed outdoors, and an evaporator coil, located indoors, typically alongside your furnace or air handler. These two parts work together by using refrigerant to absorb and remove heat and humidity from inside your home. The warm air is drawn into the system, cooled as it passes over the evaporator coil, and then circulated back through the vents.

Central AC Services We Offer

Central AC Installation

Our team specializes in seamless installations tailored to your home’s unique layout. You’ll never have to worry about unsightly ducts ruining your decor or inefficient cooling zones. We use systems that maximize airflow, energy savings, and comfort.

Central AC Repair

Whether it’s a small hiccup like a clogged filter or a bigger issue like a failing compressor, our technicians can quickly diagnose and repair the issue. And with same-day service and no extra fees for weekends or evenings, we’ve got you covered whenever you need us.

Central AC Maintenance

Our maintenance services include coil cleaning, filter changes, refrigerant checks, and a thorough inspection to catch potential problems before they snowball into big issues. It’s the easiest way to protect your investment and keep your system running like new.

Central AC Replacement

When your old system refuses to keep up during muggy 80-degree days, it’s time to bring in a replacement. Our team makes the process stress-free, offering flexible financing options, free estimates, and a 2-year workmanship warranty on all full-system replacements.

The Cool Perks of Central Air Conditioning

Thinking about upgrading your cooling system? Here’s why central air isn’t just a luxury — it’s a smart investment for your home:

Energy Efficiency That Saves You Money

Modern central air systems are light years ahead of their older counterparts. To put it in perspective, new central air conditioning systems can slash your cooling costs by 20 to 40 percent compared to systems from just a decade ago.

Even Cooling in Every Room 

Central air systems are designed to create a comfortable environment no matter where you are. Whether it’s the bedroom, the basement, or your cozy sunroom, every corner of your home receives consistent cooling.

Dehumidifies the Air

Modern central air systems remove excess moisture from the air. This is especially vital in Long Island, where summer humidity levels can make indoor spaces feel muggy and unpleasant.

Breathe Easier with Improved Air Quality 

Central AC filters are larger compared to filters in portable purifiers or window units, capturing more particles per pass. Many use high-efficiency particulate air (HEPA) or Minimum Efficiency Reporting Values (MERV)-rated filters, which remove up to 99% of airborne particles, even those as small as 0.3 microns.

Effortless Comfort at Your Fingertips

Today’s central air systems are equipped with smart thermostats. You can use your phone, tap a thermostat, or even rely on voice commands to set the perfect temperature.

When you’re ready to reap these cool perks, reach out to us for expert advice or a free estimate. Your comfort — and your wallet — will thank you.

Central Air for Older Homes? Here's How It Works.

If you’re picturing your 1930s Colonial or vintage split-level home being ripped apart to install ductwork, don’t panic. Retrofitting older homes with central air is easier and less invasive than you might think.

Creative, Minimally Invasive Solutions

Some modern units use slim, flexible tubing that can be snaked through walls and ceilings. They’re perfect for homes with limited space or unique architectural details that need to be preserved. Ductwork can be routed through closets, basements, and attics to minimize any impact on the home’s structure or appearance.

A Custom Approach

Every home is different, which is why a custom approach is key. We can install efficient, state-of-the-art systems while honoring the original character you love. Our team has years of experience working with older properties, whether it’s choosing the right system or planning the installation. 

How to Keep Your Central Air Conditioning Running Like New 

Keeping your central AC in tip-top shape requires a bit of TLC. Here’s how to make it happen:

• Change Filters Regularly. Swapping filters every 1-3 months can improve efficiency and air quality. 
• Clean the Coils. Dust and debris reduce efficiency, so an annual cleaning makes all the difference. 
• Seal Leaks. Energy escapes through even tiny gaps in ductwork. Sealing those leaks keeps cool air exactly where it’s needed. 
• Book Tune-Ups. Scheduling annual maintenance ensures system longevity and optimal performance. 

Long Island Regulations for Central Air Conditioning 

Want to install central air? Long Island has clear guidelines to help keep your home cool and compliant. Here’s a quick breakdown of some local rules:

1. New York State Residential Code - Heating and cooling equipment must be installed per manufacturer instructions and state regulations, with proper sizing determined by ACCA Manual J or an approved method. Outdoor units must be stable, supported to avoid vibration or movement, and compliant with flood safety standards in designated areas.
2. Suffolk County Regulations - Systems installed on county-owned or leased properties require refrigerant conservation devices.
3. North Hempstead HVAC Requirements - You’ll need an HVAC permit to install or modify systems.

Our team is well-versed in the latest regulations, ensuring every project remains fully compliant and up to date with all requirements.

Keeping Long Island Homes Cool and Comfortable Since 1986 

For over 30 years, Sal Manzo Plumbing, Heating & Cooling Inc. has been Long Island’s go-to HVAC company, transforming stuffy, overheated homes into cool, comfortable spaces. Here’s why families trust us:

• Red Carpet Treatment. We take pride in protecting your home, from bootie-covered shoes to our promise to clean up before leaving. 
• Proven Expertise. Our technicians are insured and constantly trained in the latest HVAC advancements and techniques.
• No Surprises, No Hassles. We offer upfront pricing with zero hidden fees and estimates that won’t leave you guessing.  
• We Deliver Fast. Same-day service? Weekend appointments? Check and check. We even have appointments until 8pm. 
• Guaranteed Work. No questions asked. One year guaranteed on all cooling repairs, and two for full system replacements. 

Don’t sweat another day without central AC! Call (516) 347-7696 or contact us online now for quick, reliable service or a free estimate.