24/7 Air Conditioning Repair Service in Suffolk County

When your air conditioning system fails, our licensed techs respond fast, with 24/7 emergency service and expert repairs for commercial and residential units.

AC Repair Services

Emergency & Routine AC Repair You Can Count On

At Temperature Control Systems, we specialize in fast, professional air conditioning repair for commercial facilities and residential properties across Suffolk County. Whether it’s a rooftop unit in Ronkonkoma, a ductless system in Selden, or central air in your Medford home, we’re equipped to get your system back up and running, fast.

From emergency calls to scheduled diagnostics, our team is licensed, insured, and trained to service all major AC brands.

AC Systems We Repair Across Suffolk County

With 25+ years of experience and over 6,000 projects completed, our team handles everything from large-scale commercial units to compact residential systems.

Rooftop AC Units
Split & Packaged Systems
Central Air Conditioners
Ductless Mini Splits
Energy-Efficient Models
Legacy Commercial Units

Projects Done

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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 Suffolk County Customers Say About Our AC Repair Service

Our store’s rooftop unit went down. They were there within hours and had it cooling again same day.

Mike. P

Patchogue, NY

Diagnosed a capacitor issue on our residential system. Fast, fair, and honest.

Danielle L

Sayville, NY

These guys are pros. Fixed a split system in our office building that 2 other companies couldn’t.

Ramon S

Smithtown, NY

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.

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Frequently Asked Questions About AC Repair

Got questions about timing, emergency availability, or the systems we service? Here are the most common ones from Suffolk County customers.

Do you offer same-day or emergency AC repair?

Yes, we’re available 24/7 for emergency repairs in Suffolk County, including weekends and holidays.

What types of AC units do you work on?

We service rooftop units, central air systems, split systems, mini splits, and more.

Can I get a quote before work begins?

Absolutely. We provide upfront pricing after diagnosing the issue on-site.

What brands do you repair?

We work with all major commercial and residential brands including Trane, Carrier, Goodman, Lennox, and Mitsubishi.

Do you offer maintenance to help avoid repairs?

Yes, we offer commercial maintenance plans and seasonal residential AC tune-ups.