HVAC Service in Union County
Two housing stocks sit in one county here. Brick two-families on steam in Elizabeth and Linden, forced-air split-levels from Clark out to Berkeley Heights. ICS works both, out of the Belleville shop at the top of the Parkway.
Belleville Covers This County
Our Essex office is a straight run down the Garden State Parkway to every town on this page.
One County, Two Kinds of HVAC Work
Union County does not have a single housing stock. It has two, and they break in completely different ways. East of the Parkway, Elizabeth and Linden are brick and frame two- and three-family houses raised before the war, most of them still heated by one-pipe steam off a boiler that replaced a coal burner sometime in the 1960s. Radiators, no ductwork, a chimney shared between flues, and often a tenant upstairs who feels every change you make downstairs.
Push west past Route 22 and the county turns post-war. Cranford, Westfield, Scotch Plains, Clark, Springfield, Rahway and Union are split-levels, capes and ranches built for forced air from the start, with the air handler in an attic or a crawl and returns that were undersized the day they went in. Cranford adds a wrinkle: houses along the Rahway River have flooded more than once, and equipment down there belongs on a stand.
North of that, the hill towns — Summit, Berkeley Heights, New Providence — are bigger older colonials on hot water baseboard, with third floors and rooms over garages the original system was never asked to heat. ICS has worked all three Union County patterns out of Belleville since 1990, and we measure heat loss and duct static pressure before pricing anything.
- Steam and hot water boiler work in Elizabeth, Linden and Rahway
- Attic and crawl-space air handler replacement in the split-level towns
- Ductless cooling for radiator houses that never had duct to work with
- Round-the-clock emergency calls county-wide
What We Find Here
HVAC Services Across Union County
Residential and light commercial, from a dead boiler in a Linden three-family to a full changeout in a Westfield colonial.
Heating Repair
Furnaces, boilers and heat pumps. Diagnosis on the running system rather than a parts swap, which matters most in a two-family where one apartment is cold and the other is not.
Air Conditioning
Repair, replacement and new cooling. In the split-level towns the condenser is rarely the problem — the return path is, and we measure it before quoting a bigger unit.
Boilers & Steam
The county’s oldest heat. Wet steam, banging mains, a radiator that stays cold at the far end of the run — usually venting or near-boiler piping, and usually fixable without a new boiler.
Ductless Mini-Splits
The answer for radiator houses and finished attics. Mitsubishi Electric wall units and ceiling cassettes, sized per room, with line sets routed where a tight side yard allows.
Ductwork & Zoning
Sealing, resizing and zoning the short trunk runs a 1958 split-level was given. The upstairs-hot, downstairs-cold complaint is nearly always solved here.
Emergency Service
No heat, no cool, a smell you cannot place. Someone answers at any hour, and no-heat calls in an occupied multi-family go ahead of scheduled work.
Built for This County’s Mix
Steam in the east, forced air in the middle, baseboard on the hills. A contractor who only knows one of them will get the other two wrong.
A Short Run Down the Parkway
Belleville sits at the top of the corridor that feeds this whole county. Trucks are stocked for both the steam side and the forced-air side before they leave.
Multi-Family Experience
Two- and three-family work needs tenant access arranged, shared equipment explained to an owner who does not live there, and a single boiler balanced for units with different habits.
Permits Filed Locally
Every municipality here runs its own construction office with its own forms and inspection windows. We pull the mechanical permit where the house is, not where it is convenient.
Numbers Before Equipment
Heat loss, static pressure, temperature rise. On a fifty-year-old duct system those readings change the recommendation more often than the brand on the box does.
From Your Call to a Verified System
Tell Us the Town
The town tells us most of what we need to load on the truck. A Linden three-family and a Scotch Plains ranch get different parts kits.
Test It Running
Gas pressure, temperature rise, static pressure, steam pressure where there is a boiler. You see the readings we took.
Repair or Replace
Both paths priced, with what each one actually fixes. Nothing is ordered until you say so, and financing is there if the timing is bad.
Permit, Install, Re-Test
Municipal permit pulled, equipment set, then the same instruments come back out to prove the finished system does what we said it would.
Cold in Elizabeth, Warm in Westfield?
Either one is a call. Emergency service runs around the clock across Union County, and estimates on replacement are free.
Union County Questions
Which Union County towns do you cover?
Westfield, Summit, Cranford, Elizabeth, Scotch Plains, Berkeley Heights, New Providence, Springfield, Linden, Rahway, Clark and Union. All of it is dispatched from our Belleville office, and the towns with their own pages are linked further down.
Can I put central air in an Elizabeth two-family with steam heat?
Not conventionally, because there is no duct system to reuse and no route to build one without losing closet depth on both floors. What works in those houses is ductless: one outdoor unit per apartment, wall heads or ceiling cassettes in the rooms that matter, and line sets run down the side yard. The steam stays as it is and keeps heating.
Why is my Cranford split-level hot upstairs and cold downstairs?
Because a split-level is three half-storeys served by one thermostat and a duct system with almost no return on the lower level. Air goes where the path is easiest. The fix is usually returns and balancing, sometimes a zone damper panel, and only occasionally different equipment. We measure static pressure first to tell those apart.
Do I need a permit to replace a furnace or boiler here?
Yes. Fuel-burning equipment replacement is a permitted mechanical job in every Union County municipality, and in a rental property the inspection also matters for your certificate of occupancy paperwork. We file it, meet the inspector and hand you the closed permit.
My basement floods. Where should the new equipment go?
Up. Along the Rahway River in Cranford and Rahway we set boilers and furnaces on masonry or steel stands above the recorded water line, move the controls and the electrical higher still, and where the ceiling allows we hang the air handler instead. It costs a little more once and saves the equipment the next time.
Is a heat pump a sensible choice in Summit or Berkeley Heights?
Often, yes. Those houses run hot water baseboard with no ducts, so a ducted swap is expensive and a cold-climate heat pump in ductless form covers the third floor and the room over the garage that the boiler never reached. ICS is cold-climate certified, and state and utility incentive programs may apply.
Do you take night calls in Union County?
Yes, 24/7. A no-heat call in an occupied building is triaged ahead of scheduled work, whatever the hour. Reach us on (866) 749-6331 and say which town you are in.
Union County Coverage
Every town below is worked out of Belleville. Linked names have a page of their own.
Belleville, New Jersey
Tell Us What the System Is Doing
Send the details and we will come back with a time. Say which town and what kind of heat you have — it saves a phone call later.
Useful to Have Ready
None of this is required, but each item shortens the visit.
- Radiators, registers or wall heads — which one is in the rooms
- Roughly how old the boiler or furnace is
- Whether the property is owner-occupied or tenanted
- Which rooms are the problem, and at what time of day
Leaky ductwork can waste conditioned air before it ever reaches your rooms. Proper duct sealing helps improve airflow, reduce energy loss, and create more consistent temperatures throughout your home.
Have questions about your HVAC system? Contact ICS today.
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Indoor humidity affects more than comfort. Too much moisture can make your home feel sticky, while air that is too dry may cause irritation and discomfort.
Proper HVAC operation and humidity control can help create a healthier, more comfortable indoor environment throughout the year.
Schedule HVAC service with ICS today:
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🌿 Cleaner indoor air can make your home feel more comfortable and healthier. Changing filters, improving airflow, and scheduling routine HVAC maintenance can help reduce dust, allergens, and other airborne pollutants.
Take a simple step toward better indoor air quality with ICS.
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Your HVAC system often gives warning signs before a bigger problem develops. Test your thermostat, listen for unusual sounds, watch for moisture near drain lines, and keep the outdoor unit clear.
A quick response can help protect your comfort, prevent avoidable damage, and support reliable system performance all season long.
Schedule HVAC service with ICS today:
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📞 866-654-4033
#ICSHVAC #HVACTips #HVACSafety #HomeComfort #hvacservice #PreventiveMaintenance #heatingandcooling #airconditioning ... See MoreSee Less
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