Smithtown's Trusted HVAC & Commercial Refrigeration Professionals

Serving Smithtown, Kings Park, Nesconset & St. James • 20-Minute Response from Ronkonkoma • Family-Owned Since 1999

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HVAC & Refrigeration Services in Smithtown | Temperature Control Systems

Twenty minutes up Route 347 from our Ronkonkoma headquarters, Smithtown has been a cornerstone of our service area for decades. From the historic buildings along Main Street to the shopping centers on Route 347, from the estates in Nissequogue to the neighborhoods of Kings Park, we’re the HVAC contractor Smithtown trusts. Whether its a rooftop unit at the Smithtown Shopping Center, emergency heating for a St. James colonial, or walk-in cooler repair at a Route 25 restaurant, we know Smithtown’s unique needs – including why every other house seems to have the same problematic 1980s heating system that builders loved using here.

Same-Day HVAC Repairs Throughout Smithtown

Smithtown’s North Shore location means you get the worst of both worlds – humid summers that make AC systems struggle and those bitter north winds in winter that find every gap in your home’s envelope. When that surprise October frost hits and half of Smithtown discovers their heat isn’t working, our phones don’t stop ringing. We know exactly which neighborhoods lose power first during storms (looking at you, Kings Park), and we keep extra generators ready for those emergencies.

The Nissequogue River area floods regularly, and we’ve rescued more furnaces from waterlogged basements than we can count. After Hurricane Irene submerged dozens of heating systems near the river, we started recommending elevated installations for any property in the flood zone. That veterinary hospital on 25A? We moved their entire mechanical room to the second floor after their third flood in five years.

Being relatively close to Smithtown means we can respond fast – usually within 20-25 minutes, even during rush hour on 347. We know all the back roads through Commack when Jericho Turnpike is gridlocked, and our dispatchers track traffic patterns to get techs there fastest. Last week when that medical building near St. Catherine’s lost heat, we had a tech on-site before the temperature even dropped below 65.

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Projects completed in Smithtown
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Air Filters

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Evaporator and Condenser Coils

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Fan Blades and Motors

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Condensate Drain Lines

ductwork

Ductwork

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Grilles and Registers

refrigerant-lines

Refrigerant Lines

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Outdoor & Indoor Units

thermostat

Thermostat

refrigerant-leaks

Refrigerant Leaks

compressor-issues

Compressor Issues

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Fan Motor Problems

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Thermostat Malfunctions

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Blower Motor Issues

capacitor-failures

Capacitor Failures

electrical-problems

Electrical Problems

condenser-coil-problems

Condenser Coil Problems

evaporator-coil-issues

Evaporator Coil Issues

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Expansion Valve Problems

ductwork-issues

Ductwork Issues

heat-exchanger-problems

Heat Exchanger Problems

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Water Leaks

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Control Board Issues

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Airflow Problems

Our Services

What Smithtown Clients Are Saying

We had a walk-in cooler go down in our kitchen during a weekend rush. We called Temperature Control Systems expecting to leave a message, but they answered immediately and had a tech at our place within two hours. He was professional, quick, and explained exactly what went wrong. We avoided a total product loss thanks to them.
Amanda C
Restaurant Owner, Ronkonkoma
They’ve handled AC and furnace maintenance at our Ronkonkoma warehouse for the past three years. Always on time, respectful to staff, and proactive with their recommendations. When we had a surprise issue this winter, they prioritized us and resolved it same-day.
Gary M
Facilities Manager
I own a small bakery in Ronkonkoma and our heating system completely failed during a January cold snap. I was honestly panicked, we had a weekend of orders coming up and it was freezing inside. Temperature Control Systems answered immediately, showed up the same day, and diagnosed the issue within 30 minutes. They had the part in their truck, fixed it on the spot, and followed up two days later to make sure everything was still running smoothly. You don’t see that kind of service anymore.
Diana S
Bakery Owner, Ronkonkoma
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Smithtown Commercial Properties HVAC Solutions

Smithtown’s commercial landscape spans everything from mom-and-pop shops in the village to major retail on Route 347 to professional buildings along Route 111. Each has different commercial HVAC installation requirements, and we’ve worked on all of them. The Smith Haven Mall area alone keeps us busy year-round with retail installations and maintenance.

Those historic Main Street buildings are beautiful but challenging – century-old construction with no room for modern ductwork, strict historical society oversight, and neighboring businesses that can’t tolerate any disruption. We’ve become experts at creative solutions, like the hidden mini-split system we installed in that antique shop that the historical society called “invisible and ingenious.”

The Route 347 corridor from Lake Avenue to Route 111 is retail central, and every store needs perfect climate control. Too hot and customers leave, too cold and employees complain. We’ve installed systems for everything from big box stores to small boutiques, always focusing on energy efficiency because these spaces are expensive to heat and cool.

Professional buildings along Maple Avenue and Route 111 require sophisticated zone control – lawyers want their offices cooler, therapists need white noise for privacy, and medical suites require precise temperature control. We design systems that give every tenant control while maintaining building-wide efficiency.

The restaurant scene in Smithtown is thriving, and every new spot needs kitchen ventilation, dining room comfort, and refrigeration. That new steakhouse near the bull statue? We designed their entire HVAC system to handle 200-degree broilers while keeping the dining room at a perfect 72. Kitchen work is specialized – you need make-up air units balanced with exhaust hoods, or you’ll have negative pressure sucking in dust and causing door problems.

Kings Park to Nesconset Home Comfort Systems

Smithtown’s housing stock tells the story of Long Island’s development – 1960s ranches in Smithtown proper, 1970s colonials in Kings Park, 1980s contemporaries in Nesconset, and new construction in St. James. Each era brought different building techniques and HVAC challenges that we’ve learned to handle over 25 years.

AC installation in Smithtown often means dealing with houses that weren’t built for central air. Those solid ranches have barely any attic space for ductwork, and the electrical panels are usually maxed out. We specialize in creative solutions – high-velocity systems that use small ducts, ductless splits for impossible spaces, and coordinating electrical upgrades to handle new loads.

The furnace installation and furnace repair season starts when leaves begin falling, and Smithtown homeowners realize that noise their furnace made last March wasn’t nothing. Those 1980s builders-grade furnaces are all failing now – we replace at least three a week during fall. The good news is modern high-efficiency units can cut heating bills by 40%, which matters when you’re heating a 3,000 square foot colonial.

Boiler installation and boiler repair are huge in Smithtown’s older sections. Kings Park has tons of homes with original steam systems, and while they provide great heat when working, they’re temperamental. We see everything from buried oil tanks that need decommissioning to asbestos-wrapped pipes that require special handling. Modern boilers are incredibly efficient, but installation requires expertise – one wrong pipe pitch and you’ll have water hammer that sounds like someone’s hitting your pipes with a sledgehammer.

Heat pump installation is taking off in Smithtown, especially for additions and finished basements where extending existing ductwork would be impossible. The new cold-climate models work great even in January, and PSEG rebates make them very affordable. We installed 30 heat pump systems in Nesconset alone last year.

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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.

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Food Service Refrigeration & Cold Storage

From the bagel shops that open at 4 AM to the craft beer stores on 25A, Smithtown’s food businesses depend on commercial refrigeration. We service everything – walk-in coolers at the supermarkets on Veterans Highway, display cases at every deli on Main Street, and specialized wine refrigeration at those high-end liquor stores.

The farms and farm stands in the St. James and Nissequogue area need refrigeration for produce and dairy. We’ve installed custom cooling rooms that maintain perfect humidity for vegetables while keeping temperatures just above freezing. That popular farm stand on 25A? Their entire cold storage system is our design, sized to handle peak harvest without wasting energy in winter.

Smithtown’s thriving catering businesses need mobile refrigeration solutions and backup systems for their prep kitchens. When you’re catering a 300-person wedding, equipment failure isn’t an option. We provide redundant systems and 24/7 monitoring for several major caterers, ensuring they never lose product or miss an event.

The medical facilities along Route 111 require ultra-precise refrigeration for vaccines and medications. These aren’t just cold boxes – they need temperature logging, backup power, and alarm systems that alert if temperatures drift even two degrees. We’re certified for medical refrigeration and understand the compliance requirements.

 

Smithtown's Experienced Temperature Control Team

We’ve been servicing Smithtown since 1999, long enough to know that parking downtown requires quarters (lots of them), that Route 347 is a nightmare during school dismissal, and that the Smithtown Building Department wants everything in triplicate. This local knowledge matters when you need service fast and done right.

Our techs know Smithtown’s quirks – like how houses near the old Psychiatric Center often have unusual utility configurations, or why so many Nesconset homes have two separate AC systems (bad 1980s additions). We stock parts for the equipment commonly found here, so we usually fix problems on the first visit instead of ordering parts and coming back.

We work regularly with Smithtown’s inspectors and know exactly what they require. We pull permits properly, schedule inspections promptly, and maintain the licenses and insurance Smithtown requires. No surprises, no delays, no failed inspections because we missed some local requirement.

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Our Smithtown Service Area

From Smithtown, we cover all surrounding neighborhoods:

Smithtown Areas:

  • Smithtown proper
  • Kings Park
  • Nesconset
  • St. James
  • Head of the Harbor
  • Nissequogue
  • Commack (northern sections)
  • Fort Salonga

Major Commercial Zones:

  • Route 347 corridor
  • Route 111 business district
  • Main Street historic district
  • Route 25/25A commercial areas
  • Smith Haven Mall area
  • Maple Avenue professional buildings


Response Times:

  • Central Smithtown: 20 minutes
  • Kings Park: 25 minutes
  • Nesconset: 18 minutes
  • St. James: 25 minutes
  • 24/7 emergency service available
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Common HVAC Issues in Smithtown Homes/Businesses

Smithtown’s mix of older and newer construction creates predictable problems. Those 1960s-1980s homes all have undersized return air ducts – builders saved money by skimping on returns, causing poor air circulation and hot/cold spots. We fix this constantly by adding return ducts or installing jump ducts between rooms.

The high water table in areas near the Nissequogue River means basement moisture is a constant battle. Furnaces and air handlers in these basements need special attention – rust prevention, elevated installations, and dehumidification to prevent mold. We see too many systems destroyed by moisture that proper installation would have prevented.

Main Street’s historic buildings have unique challenges – no two are alike, and what works in one might be impossible in another. These buildings often share walls, so vibration and noise transfer is a major concern. We use special isolation mounting and sound dampening to keep everyone happy.

The professional buildings along 111 deal with varying occupancy – packed during business hours, empty nights and weekends. Single-zone systems waste enormous energy heating or cooling empty spaces. We retrofit these buildings with zone control and programmable thermostats that can save 30% on energy bills.

Storm damage is always a concern, especially for the areas with above-ground power lines. Those beautiful tree-lined streets in Kings Park look great until a storm drops branches on power lines. We see surge damage regularly and now recommend whole-system surge protection for any new installation.

Professional HVAC Solutions for Smithtown

From emergency heating repair in a Nissequogue mansion to commercial HVAC installation at a new Route 347 retail space, from AC repair in Kings Park to commercial refrigeration service for Main Street restaurants, we handle it all. Our comprehensive service means one call solves your problem, whether it’s furnace installation, boiler repair, heat pump installation, or heating system maintenance.

We understand Smithtown properties – the unique challenges of riverside homes, the demands of retail spaces, the requirements of medical facilities, and the quirks of historic buildings. This local expertise, combined with our technical knowledge and 24/7 availability, makes us Smithtown’s go-to HVAC contractor.

Call 631-710-6257 for immediate service. Our dispatch team knows Smithtown’s geography and traffic patterns, ensuring the fastest possible response. Whether you’re a homeowner in Nesconset, a restaurant owner on Main Street, or a property manager on Route 347, we’re ready to solve your HVAC and refrigeration challenges.

Temperature Control Systems: Smithtown’s HVAC experts for over two decades.

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