AC Installation & Replacement Services
in Nassau County

A malfunctioning or outdated air conditioning system can make your home or business uncomfortable and inefficient. Whether you need a new AC installed or an old unit replaced, our licensed professionals ensure your system delivers reliable, energy-efficient cooling all season long.

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      EXCELLENT  
   Based on 186 reviews 
    
 
 
 
   
 
 
       Posted on Google  
   
   Dennis Merced 
 
 
 
 Trustindex verifies that the original source of the review is Google. Awesome company. Very professional.
  
 
      Posted on Google  
   
   Gilda Mckenzie 
 
 
 
 Trustindex verifies that the original source of the review is Google. Santiago was professional, pleasant, knowledgeable, and work was done in a timely manner. Would definitely recommend!!!!
  
 
      Posted on Google  
   
   Mrsb Mrsb 
 
 
 
 Trustindex verifies that the original source of the review is Google. He was on tome and very professional Msb
  
 
      Posted on Google  
   
   Carmine Tudisco 
 
 
 
 Trustindex verifies that the original source of the review is Google. These guys were awesome came in very politely and handle the job very professional very satisfied
  
 
      Posted on Google  
   
   Ginny Annitto 
 
 
 
 Trustindex verifies that the original source of the review is Google. Highly recommend . Was a two day job bc a part had to be ordered but each plumber who came was extremely nice and polite . Job was completed quickly and was much appreciated!
  
 
  
  
 
     Verified by Trustindex  Trustindex verified badge is the Universal Symbol of Trust. Only the greatest companies can get the verified badge who has a review score above 4.5, based on customer reviews over the past 12 months. Read more

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About All Island HVAC

Why Choose Our AC Installation & Replacement Team

At All Island Plumbing, Heating & Cooling, we’re trusted for fast, precise, and reliable air conditioning service. From new installations to full system replacements, our licensed technicians ensure your AC is installed correctly for optimal performance and energy efficiency.

24/7 AC Support
200+ 5-Star Reviews
Full-Service Plumbing & HVAC
Licensed & Insured Technicians
Upfront Pricing

Exceptional AC Repair & Tune-Up Services

Fast, Reliable Service - Keep Your Space Cool

At All Island Plumbing, Heating & Cooling, we handle everything from small residential AC installations to large commercial system replacements. Our licensed experts provide fast, accurate, and reliable service for homeowners and businesses across Long Island, ensuring your cooling system works efficiently all season long.

Man using pliers to repair a kitchen sink plumbing issue, emphasizing emergency plumbing services in Brooklyn.

Plumbing Repairs

Leak detection, pipe repairs, and fixture replacements done right the first time.

Service technician adjusting a heating system, wearing gloves and a blue cap, with visible plumbing pipes in the background, emphasizing emergency HVAC services in Brooklyn.

Heating Services

Installation, repair & maintenance for boilers, furnaces & gas heating systems.

Close-up of two outdoor heat pump units with visible fans, positioned on a concrete base against a blue wall, representing HVAC solutions for residential comfort.

Cooling Solutions

Stay comfortable year-round with expert AC installation, repair & servicing.

Keeping Long Island Homes Safe & Comfortable

From emergency plumbing repairs to complete heating and cooling solutions, All Island Plumbing, Heating & Cooling is committed to keeping your home safe, comfortable, and worry-free. Serving Long Island homeowners and businesses with trusted service, day or night.

Exceptional Plumbing Services

Trusted Plumbing, Heating & Cooling Experts in Long Island

01. Emergency Plumbing Services

From burst pipes to severe leaks, our 24/7 emergency plumbing team responds fast to protect your home from costly damage. We’re just one call away, anytime you need us.

02. Heating & Cooling Solutions

Stay comfortable year-round with our expert boiler, furnace, and AC repair services. Whether it’s a cold winter night or a hot summer day, All Island has you covered.

AC Installation & Replacement Services
in Nassau County

About All Island HVAC

Why Choose Our AC Installation & Replacement Team

24/7 AC Support

200+ 5-Star Reviews

Full-Service Plumbing & HVAC

Licensed & Insured Technicians

Upfront Pricing

Exceptional AC Repair & Tune-Up Services