Suffolk County's Trusted Air Conditioning Contractor

Trusted by Long Island businesses for 25+ years. We specialize in commercial AC systems, with residential service available across Suffolk County.

Commercial Air Conditioning Services

Commercial & Residential AC Service You Can Count On

Since 1999, we’ve helped Long Island businesses and homeowners stay cool and operational. Whether you manage a warehouse or need your home system checked before summer, our licensed HVAC technicians provide fast, reliable service you can trust.

Stay informed with the latest HVAC maintenance tips and industry updates on our blog.

Types of AC Systems We Repair & Maintain in Suffolk County

Temperature Control Systems has deep experience in AC repair service throughout Suffolk County. From rooftop units and split systems to VRF setups and packaged AC systems, our team is trained and certified to diagnose, repair, install, and maintain a wide range of equipment.

Whether you’re running a restaurant, office complex, warehouse, or retail storefront, we understand how critical cooling is to your operations, and we respond fast. Our licensed HVAC technicians are equipped for large-scale commercial systems and high-efficiency residential models alike.

Serving Suffolk County businesses since 1999, we’ve completed over 6,000 projects, with a focus on performance, uptime, and year-round comfort.

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Our Services

Commercial Refrigeration

Keep your walk-ins, reach-ins, and display cases running 24/7. We service restaurants, delis, and grocery stores across Suffolk County with emergency repairs and preventative maintenance to protect your inventory.

Air Conditioning Installation

New construction or replacing that 20-year-old unit that’s barely keeping up? We size systems properly (most companies don’t), handle all permits, and get your AC running right the first time.

Furnace Installation

Installing new furnaces across Suffolk County for over 25 years. Gas, oil, or electric – we measure your house properly, size the system right, and complete most installs in 6-8 hours with minimal disruption.

Heat Pump Installation

Heat pumps are getting crazy popular because one unit does heating AND cooling. Way more efficient than old oil furnaces, and your electric bills drop like crazy. We install them right so they work in our Long Island winters.

Air Conditioning Repair

Your AC died in the middle of July? We get it – happens to everyone. Our trucks are stocked with parts for most major brands, so we usually fix it on the first visit without the “I’ll have to order that” runaround.

Emergency Heating

Heat died at 2AM when its 15 degrees outside? We answer our phones 24/7 and keep emergency trucks ready because heating problems don’t wait for business hours. Usually there within 90 minutes.

Boiler Installation

Radiant heat is incredible when it works right. We install high-efficiency boilers for homes and commercial buildings, handle all the zone controls, and make sure every room gets the heat it needs.

Commercial HVAC Installation

King Kullen, medical buildings, warehouses – we handle commercial installs that need permits, crane rentals, and weekend work so we don’t disrupt your business. Rooftop units, split systems, whatever you need.

Air Conditioning Maintenance

A $129 spring tune-up prevents a $4,000 emergency replacement in August. We clean coils, check refrigerant levels, test electrical connections, and catch small problems before they become expensive ones.

Furnace Repair

Weird noises coming from the basement? Heating bills climbing for no reason? We diagnose and fix gas, oil, and electric furnaces fast. Most repairs done same-day with our fully-stocked service trucks.

Boiler Repair

Leaking boiler? No heat in half the house? Pressure issues? We work on all boiler types and actually understand hydronic systems. Most techs don’t – we’ve been doing this since 1999.

Commercial Heating

Retail stores, restaurants, office buildings – when your commercial heat goes down, you lose money fast. We service and install commercial heating systems throughout Suffolk County with minimal downtime and proper maintenance scheduling.

What Our Clients Say About Our AC Services

Would definitely recommend. Staff showed up on time. The staff was friendly and knowledgeable. Repaired a leak and got me back running without any surprises or extra charges.

Sam Luc

I have used Temperature Control at my place of business and for personnel use for over 15 years. Very easy to deal with. Prompt service. Personality says so much about a business and Larry and Alex know how to treat there customers, with a smile and a "no problem we'll take care of it" type of attitude. Would and have recommended them to so many people over the years. Everyone has always been happy.

Steven Burgardt

Best AC service around! Alex was able to trouble shoot and repair an intermittent central AC problem at my home quickly and efficiently. He was knowledgable, prompt and professional. He got the part we needed quickly and had us up and running in no time! Highly recommended. Wouldn't use anyone else.

Christine Mencarelli

Our Service Areas

We’ve been servicing HVAC systems across Suffolk County for over 25 years. Our trucks are on the road every day from Huntington to Montauk, and we know Long Island homes inside and out. If you’re in Suffolk County, we’re already in your neighborhood.

Ronkonkoma

Our home base since 1999 – we’re your neighbors servicing furnaces, AC units, and commercial HVAC throughout the community.

Islip

Complete heating and cooling services for Islip, East Islip, and Central Islip homes and commercial properties.

Huntington

Fast response times for heating and cooling emergencies across Huntington, Huntington Station, and surrounding areas.

Babylon

Serving Babylon, West Babylon, and North Babylon with reliable furnace installation, AC repair, and emergency HVAC services.

Patchogue

From emergency furnace repairs to new AC installations, we service homes and businesses throughout the greater Patchogue area.

Brookhaven

Full-service HVAC coverage for Brookhaven Town – from residential furnace repairs to commercial heating installations.

Smithtown

Trusted HVAC contractor for Smithtown families and businesses – same-day service available for heating and cooling emergencies.

Frequently Asked Questions About Our AC Services

Got questions about our air conditioning services, response times, or coverage areas? Here are the answers we get asked most by Suffolk County customers.

Do you offer 24/7 emergency AC repair?

Yes. We provide 24/7 emergency AC repair across Suffolk County for both homes and businesses. Our technicians carry common parts on their trucks, so most emergency calls get resolved the same visit. Call 631-710-6257 any time, day or night.

What types of AC systems do you service?

We work on rooftop units, ductless mini splits, packaged systems, central air, VRF systems, and PTAC units. Our technicians are trained on all major brands including Carrier, Trane, Lennox, Mitsubishi, Daikin, and Goodman.

Do you service residential and commercial properties?

Yes. While we specialize in commercial AC systems for restaurants, offices, warehouses, and retail stores, we also handle residential AC repairs, installations, and maintenance across Suffolk County.

How fast can you respond to service calls?

Most service calls get a technician on site the same day. For emergencies, we average about 90 minutes anywhere in Suffolk County. Our trucks run the LIE, Sunrise Highway, and Route 347 daily, so we’re never far.

Do you offer maintenance plans?

Yes. We offer preventive maintenance contracts for commercial AC systems and seasonal tune-ups for homeowners. Maintenance customers get priority scheduling during peak summer months when our phones are busiest.