24/7 Air Conditioning Repair in Ronkonkoma, NY – Your Local HVAC Experts Since 1999
As Suffolk County’s premier HVAC contractor and commercial refrigeration company, we’ve served businesses from Huntington to Montauk since 1999. Our Ronkonkoma-based team provides 24/7 emergency service throughout Suffolk County.
ABOUT US
Suffolk County's Trusted Air Conditioning Repair Service | Commercial HVAC Since 1999
Last summer, I got a call at 11 PM from a restaurant owner in Patchogue. His walk-in cooler had just failed, and $8,000 worth of inventory was at risk. Within 45 minutes, our truck was pulling into his parking lot. By 2 AM, his cooler was humming again, and his weekend prep was saved. That’s what we do here at Temperature Control Systems – we keep Long Island businesses and homes running, no matter the hour.
I’ve been fixing air conditioners and refrigeration systems across Suffolk County for over two decades now. Started right here in Ronkonkoma back in ’99, when my biggest worry was getting to job sites before the Sunrise Highway got jammed. These days, with over 6,000 projects under our belt, we’ve got trucks rolling from Huntington to Montauk daily. But one thing hasn’t changed – when your AC dies during a humid August heatwave or your heating fails during a February nor’easter, you need someone who knows these systems inside and out, and more importantly, someone who’ll actually show up.
Living and working on Long Island means understanding what our neighbors need. Whether you’re trying to keep your Smithtown colonial cool for the kids’ soccer team sleepover, or you’re managing a deli in Babylon that can’t afford to lose a single display case for even an hour, we get it. We’ve been in your shoes – sweating through that first scorching day in June when everyone realizes their AC isn’t quite right, or scrambling when the first cold snap hits and half of Suffolk County needs their heating checked yesterday.
What sets us apart isn’t just our round-the-clock availability or our certified technicians who actually know the difference between a TXV and a TEV (and why it matters for your system). It’s that we’re your neighbors. We shop at the same King Kullen, sit in the same traffic on 347, and yes, we’ve dealt with the same PSEG rate hikes that have everyone looking for more efficient systems. When you call Temperature Control Systems, you’re not getting a call center in another state – you’re getting a local team that can be at your door, usually within 90 minutes, ready to solve your problem without the runaround.
Commercial Refrigeration Solutions That Keep Your Business Running
Walking into Maureen’s Deli in Central Islip at 5 AM on a Monday, I could immediately hear it – that subtle clicking sound from their reach-in cooler that meant the compressor was cycling too frequently. “It’s been doing that all weekend,” she told me, worried about her fresh mozzarella and cold cuts. Twenty-five years of running her family business, and she knew that sound meant trouble. Within two hours, we had her system purring smoothly again, preventing what could’ve been a $15,000 loss in inventory and, more importantly, keeping her loyal customers happy.
That’s the reality of commercial refrigeration on Long Island – when it fails, it’s not just about comfort, it’s about livelihoods. From the pizza shops along Route 25A to the seafood markets in Bay Shore, businesses depend on their refrigeration systems every single day. We handle it all: walk-in coolers, reach-in units, display cases, prep tables, ice machines, and those specialized glycol systems the craft breweries in Patchogue are using now.
Our commercial refrigeration service covers the full spectrum – from emergency repairs that get you back up and running tonight, to complete system installations planned around your schedule. We’ve installed massive walk-in freezers for wholesale distributors in Hauppauge, serviced delicate temperature-controlled storage for medical facilities in Stony Brook, and kept countless restaurants across Suffolk County compliant with health department regulations. We understand that when a grocery store in Deer Park calls about their frozen food cases, or when that new gastropub in Huntington Village needs their draft system’s glycol chiller fixed before Friday night, there’s no time for excuses.
The thing about commercial refrigeration repair that most people don’t realize? It’s not just about fixing what’s broken – it’s about preventing those 2 AM emergency calls in the first place. That’s why we offer comprehensive maintenance programs that catch small issues before they become big problems. Regular filter changes, coil cleaning, checking refrigerant levels, testing defrost cycles – the unglamorous work that keeps your compressors from burning out during the Fourth of July rush when everyone in Suffolk County is buying cold drinks and ice cream.
Your Go-To Commercial HVAC & Refrigeration Partner in Suffolk County
✅ Same-Day Emergency Service
✅ Experienced, Certified Technicians
✅ Local Knowledge, Long Island Focus
✅ Transparent Pricing & Reliable Work
✅ Thousands of Happy Clients
OUR SERVICES
Full-Service HVAC Contractor for Suffolk County Homes and Businesses
Standing on a rooftop in Hauppauge last month, watching my team crane-lift a 15-ton package unit onto a medical building while coordinating with LIPA to ensure power requirements were met, I thought about how far we’ve come from simple furnace repairs. Being a full-service HVAC contractor on Long Island means juggling a hundred moving parts – literally and figuratively. One day we’re installing a complete ducted system in a new build in Dix Hills, the next we’re retrofitting ductless mini-splits in a 1950s ranch in Oakdale where running traditional ductwork would mean tearing apart original plaster walls that the homeowners want to preserve.
As your local HVAC contractor, we handle everything from the initial system design to the final thermostat programming. That means calculating proper load requirements for your space (because nobody wants to pay for an oversized system that short-cycles), pulling permits from Suffolk County or your local village, coordinating with other trades on construction sites from Port Jefferson to Lindenhurst, and making sure everything meets New York State energy codes. We’ve installed complete HVAC systems in everything from Patchogue’s new waterfront condos to those massive Amazon warehouses in Shirley, and each project teaches us something new about making systems work better for Long Island’s unique climate.
Our HVAC services cover the full spectrum: A/C system maintenance that prevents those July breakdowns when it’s 95 degrees and humid; heating system installations that keep January’s nor’easters from freezing your pipes; HVAC duct and vent cleaning that improves your indoor air quality (especially important with all the pollen from those oak trees every spring); complete HVAC system repairs when things go wrong; ductless heating and cooling solutions for additions and problem rooms; smart thermostat installations that work with your PSEG time-of-use rates; and comprehensive maintenance programs that keep everything running efficiently year-round.
What most people don’t realize about HVAC work on Long Island is how much our proximity to the ocean affects everything. The salt air from the Sound and the Atlantic corrodes outdoor units faster than inland areas, meaning coil cleaning and protective coatings aren’t optional – they’re essential. Those beautiful beach houses in Westhampton? Their systems need twice the maintenance of a home in Commack. And don’t get me started on what Sandy did to HVAC systems along the South Shore – we’re still helping homeowners in Lindenhurst and Massapequa upgrade to flood-resistant installations with elevated equipment pads.
The best part of being an HVAC contractor here? Solving problems for our neighbors. Like when the Smithtown Senior Center’s system failed during their summer lunch program, and we worked through the night to get it running before 200 seniors showed up the next morning. Or helping that young family in Centereach figure out a ductless solution that gave them proper cooling without breaking their budget. Every install AC project, every repair HVAC call, every thermostat installation – it’s another Long Island family or business we’re keeping comfortable through our wild weather swings.
Air Filters
Evaporator and Condenser Coils
Fan Blades and Motors
Condensate Drain Lines
Ductwork
Grilles and Registers
Refrigerant Lines
Outdoor & Indoor Units
Thermostat
Refrigerant Leaks
Compressor Issues
Fan Motor Problems
Thermostat Malfunctions
Blower Motor Issues
Capacitor Failures
Electrical Problems
Condenser Coil Problems
Evaporator Coil Issues
Expansion Valve Problems
Ductwork Issues
Heat Exchanger Problems
Water Leaks
Control Board Issues
Airflow Problems
Boiler Installation and Repair – Keeping Long Island Warm Through Every Winter
Three years ago, during that brutal polar vortex that had all of Suffolk County in a deep freeze, I spent 18 hours straight going from one boiler emergency to the next. Started in Commack at a medical office where the staff was wearing winter coats at their desks, then to a Ronkonkoma warehouse where the pipes were starting to freeze, and finally to an apartment complex in Brentwood where 40 families were without heat. Each call reminded me why we do this work – when it’s 8 degrees outside and the wind off the Great South Bay cuts right through you, a working boiler isn’t a luxury, it’s survival.
Installing and repairing boilers across Long Island has taught me that every system tells a story. That 30-year-old cast iron beast in your Levittown cape? It’s probably been running since the kids were born, cycling on and off through countless nor’easters, burning oil or gas depending on what made sense when PSEG rates fluctuated. The new high-efficiency condensing boilers we’re installing in Smithtown and Nesconset? They’re cutting heating bills by 30% while taking up half the basement space – perfect for homeowners who want to finish that basement before the kids head off to Stony Brook University.
We handle every type of boiler system you’ll find on Long Island – steam, hot water, gas, oil, and those combination units that do your heating and hot water. Whether it’s retrofitting an old Victorian in Northport with a modern system that preserves the home’s character, or installing multiple commercial boilers for that new development near the Tanger Outlets, we’ve got the expertise and equipment to do it right. Our boiler installation service includes full permit handling with the Town of Brookhaven, Islip, or wherever you’re located, because navigating Long Island’s building departments shouldn’t be your problem.
The truth about boiler repair is that most failures happen at the worst possible time – usually during the first cold snap in November when everyone fires up their heat simultaneously, or during those January deep freezes when systems are working overtime. That’s why we stock our trucks with parts for all major brands – Weil-McLain, Burnham, Peerless, Crown – so when your boiler stops working on Super Bowl Sunday and you’ve got 20 people coming over, we can actually fix it, not just diagnose it and promise to come back next week.
Heating Contractor Services – Your Defense Against Long Island Winters
Last February, when that unexpected cold snap dropped temperatures to -3 degrees (with winds making it feel like -20), my phone didn’t stop ringing for 72 hours straight. A family in Miller Place with a newborn had lost heat completely. An elderly couple in Sayville was trying to heat their house with their oven. A restaurant owner in Farmingdale couldn’t open because his dining room was 45 degrees. Each call was a reminder that here on Long Island, being a heating contractor isn’t just about technical know-how – it’s about being there when your neighbors need you most.
Twenty-five years of heating system installations across Suffolk County has taught me that every home has unique challenges. Those beautiful colonials in Stony Brook with three separate heating zones? They need careful balancing to avoid hot and cold spots. The split-levels throughout Selden and Lake Grove built in the ’60s? Their original heating systems are usually undersized by today’s standards, especially when families finish the lower level. And those sprawling ranches in Dix Hills with additions tacked on over the decades? Getting consistent heat throughout requires creative solutions – sometimes ductless supplements, sometimes zoning retrofits, sometimes complete system overhauls.
Our heating contractor services adapt to what Long Island homeowners actually need. We handle heating system repair for all types – forced air furnaces, hot water baseboilers, steam heat, heat pumps, and those hybrid systems that switch between gas and electric depending on PSEG rates. Our heating system maintenance programs keep your equipment running efficiently through those long stretches from October to April when the heat never really stops running. We’ve done complete heating system installations for new construction from Nesconset to Mastic Beach, always sizing systems properly because an oversized furnace that short-cycles is just as problematic as an undersized one that runs constantly.
The smart money on Long Island is moving toward high-efficiency heating solutions, especially with natural gas prices fluctuating and PSEG offering rebates for heat pump installations. We’re installing dual-fuel systems in Huntington and Cold Spring Harbor that use heat pumps down to 30 degrees, then switch to gas backup for those really cold days. These setups can cut heating bills by 40% while qualifying for utility incentives. For homes in areas like Rocky Point or Mount Sinai without natural gas access, we’re retrofitting oil systems with modern condensing boilers that squeeze every BTU from each gallon.
Beyond the equipment itself, we handle everything that makes a heating system work properly. HVAC duct and vent installation for new additions, ensuring proper airflow to that converted garage in Holbrook or the new master suite in Northport. Duct cleaning and repair for systems that haven’t been serviced since Bush was president (the first one). Smart thermostat installations that learn your schedule – preheating the house before you get home from the LIRR station, dropping temps overnight, creating custom zones so you’re not heating empty rooms. Every install thermostat job we do includes teaching you how to actually use it, because what good is smart technology if it’s too complicated to operate?
What really sets us apart as heating contractors is understanding Long Island’s specific challenges. Those old steam radiator systems in Bayport’s historic district that clang and hiss all night? We know how to quiet them down. The beach houses in Fire Island that sit empty all winter? We set up WiFi-enabled thermostats and freeze protection systems so you can monitor everything from Florida. And when nor’easters knock out power to half of Brookhaven Township, we’re ready with generator interlock installations so your heating system keeps running even when PSEG doesn’t.
Refrigerator Repair Service – Protecting Your Investment and Inventory
Walking into Giovanni’s Italian Market in Deer Park last week, I knew something was wrong before he even said a word. That distinct sound of a compressor struggling, the slight warmth near the deli case – after 25 years, you develop a sixth sense for refrigeration problems. “It started yesterday,” he said, gesturing at $5,000 worth of imported prosciutto and fresh mozzarella. Within an hour, we had his case running at perfect temp, crisis averted. But here’s the thing – if he’d waited another day, hoping it would fix itself, he’d have lost everything.
Refrigerator repair service on Long Island isn’t just about fixing residential fridges (though we certainly handle plenty of those Sub-Zero and Viking units in the North Shore estates). It’s about understanding that when refrigeration fails, whether it’s a home kitchen in Bay Shore or a supermarket in Commack, time is money and sometimes it’s memories too – like that wedding cake a Centerport bakery had stored for a Saturday event, or the medical supplies at that Smithtown pediatric office that needed precise temperature control.
Our commercial refrigerator repair covers everything from single-door reach-ins to massive walk-in coolers and freezers. We service all the major brands you’ll find in Suffolk County businesses – True, Turbo Air, Delfield, Traulsen, Hussmann – and we keep our trucks stocked with the most common parts because when your refrigeration fails at 8 PM on a Friday, you can’t wait until Monday for a part to be ordered. We’ve repaired ice cream freezers in July when every family from Montauk to Melville is buying pints, fixed sushi display cases that need exact temperature control, and resurrected walk-in coolers that restaurants thought were dead.
The residential side of refrigerator repair has evolved dramatically since I started. These aren’t the simple white boxes our parents had – today’s kitchens in Huntington and Northport feature built-in refrigerators that cost more than a car, with dual compressors, multiple temperature zones, and computer controls that require actual diagnostic tools to troubleshoot. We fix them all, from the basic apartment fridges in Stony Brook student housing to those commercial-grade home units that people install when they renovate their kitchens with those high-end appliance stores in Roslyn.
What most people don’t realize about refrigerator repair service is that half the battle is prevention. That’s especially true here on Long Island where our humid summers make condensers work overtime and our proximity to the ocean means salt air is constantly attacking outdoor components. Those restaurant owners along the Nautical Mile in Freeport? Their equipment needs quarterly coil cleanings just to survive. The delis along Jericho Turnpike dealing with constant door openings during lunch rush? Their door gaskets and hinges need regular adjustment to maintain proper seal.
Our commercial refrigeration installation service goes beyond just dropping in new equipment. We help businesses navigate Suffolk County health department requirements, ensure proper drainage for condensate (because nobody wants a slip-and-fall lawsuit), calculate proper ventilation to prevent heat buildup, and coordinate with electricians to ensure adequate power supply. We’ve installed complete refrigeration systems for new restaurants in Patchogue’s growing downtown, upgraded entire cold storage facilities for food distributors in Hauppauge, and even designed custom refrigeration solutions for that craft brewery in Riverhead that needed precise fermentation temperature control.
The emergency aspect of refrigerator repair can’t be overstated. When a Babylon catering hall calls at midnight because their walk-in failed with tomorrow’s wedding prep inside, or when that organic grocery in Huntington discovers their dairy case is running warm on a Saturday morning, response time matters. That’s why we maintain 24/7 availability with technicians across Suffolk County, from our Ronkonkoma base to strategic locations that let us reach any business from Port Jefferson to Bay Shore within 90 minutes, usually faster.
Client Testimonials
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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.