24/7 emergency service · Every major brand

AC Repair in Northern New Jersey

Warm air at the vents, ice on the copper, a breaker that will not stay in. AC repair starts with gauges and a meter on a running system, not with a guess at the parts counter. You see the readings we base the fix on.

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Emergency Mini-Split Repair Heat Pump Repair Replace Instead

Diagnosed Under Load

A cooling fault that only shows at full run time cannot be found on a system sitting idle.

24/7No-cool response

35+Years on the tools

300+Five-star reviews

12,000+Systems installed

All makes & models · Licensed & insured

NATE-Certified Technicians

24/7 Emergency Service

Serving NJ Since 1990

Licensed & Insured · #19HC00444000

What Your AC Should Do at 100 Degrees

Equipment here is sized to a design day in the low nineties. Above that it is expected to run without stopping and hold a few degrees back from the set point. That is not a fault. Failing to hold at eighty-five is. Knowing which one you have is the whole diagnosis.

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Air conditioning repair

When the AC Is Not Cooling

Every no-cool call lands in one of three buckets, and telling them apart takes about fifteen minutes with the right instruments. Either the system is not running at all, or it is running but not moving heat, or it is moving heat but not moving air. Each bucket has its own short list of suspects, and each has its own test.

Not running is electrical: a swollen run capacitor, a contactor with pitted contacts, a blown fuse in the disconnect, or a float switch that opened because the condensate drain plugged. Running but not moving heat is refrigeration: charge that has leaked away, a condenser coil packed with cottonwood, a metering device that stopped metering, a compressor with valves that no longer seal. Moving heat but not moving air is airflow: a filter nobody changed, a blower wheel caked with dust, a crushed flex run, a coil frozen into a block of ice.

Those three paths look identical from the thermostat. They look nothing alike on a manifold gauge set, an amp clamp and a manometer. That is why we test the system running before quoting anything, and why a low refrigerant charge gets a leak search rather than a top-up. Refrigerant is not consumed. If it is low, it went somewhere, and adding more without finding the hole means paying twice.

Central, ductless, high-velocity and heat pump cooling repaired
Electronic leak detection instead of guessing at the charge
Diagnosis and price approved by you before any part goes in
24/7 emergency AC repair across the whole footprint

(866) 749-6331

Instruments On the Truck

Manifold & ProbesSuperheat and subcooling say whether the charge and the metering device are right.

Meter & Amp ClampCapacitor microfarads, contactor voltage drop, compressor running current.

ManometerStatic pressure across the coil and filter, where lost capacity usually hides.

Leak DetectorElectronic sniffer and dye to find the hole rather than refill around it.

Read the symptom

What Your System Is Telling You

The most common no-cool complaints in this region, what each one usually turns out to be, and the measurement that settles it.

What you notice	What it usually is	What we test first
Air is cool but never cold, house creeps up all afternoon	Refrigerant lost through a leak, or a condenser coil too dirty to reject heat	Subcooling, condenser split, coil face and fan current
Nothing happens when the thermostat calls for cooling	Failed run capacitor, pitted contactor, blown disconnect fuse, or a float switch tripped by a plugged drain	Line voltage at the contactor, capacitor microfarads, drain safety switch
Outdoor fan spins, compressor grunts and cuts out	Weak start components or a compressor drawing locked-rotor current	Start and run current, winding resistance, hard-start behaviour
Ice on the copper line or a frozen indoor coil	Starved airflow across the evaporator, or a charge low enough to drop coil temperature below freezing	Filter and blower wheel, static pressure, superheat once thawed
Water on the floor or a stain on the ceiling below	Condensate drain blocked, trap dry, pan rusted through, or a coil freezing and thawing	Drain line, trap, primary and secondary pan, float switch
Cools the first floor, never catches up upstairs	Duct and return imbalance rather than an equipment fault	Room-by-room supply temperature, return static, damper positions
Breaker trips, sometimes after minutes, sometimes after hours	Compressor or fan motor pulling high current as it heats up, or a damaged conductor	Running amps against nameplate, insulation resistance, wire condition
Grinding, screeching or a rattle that changes with fan speed	Blower or condenser fan bearings, a loose wheel, or debris in the fan guard	Motor bearing play, current draw, physical inspection of both fans
Musty smell for the first few minutes of every cycle	Biological growth on a permanently wet coil and a dirty blower wheel	Coil face, blower wheel, drain pan, filter fit in the rack

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Why choose ICS

Found, Not Guessed

Parts swapping is fast and it is cheap for the contractor. It is expensive for you, because the second visit is on the next hot day.

Tested Under Load

Readings come off the system running in the weather that caused the complaint. A marginal capacitor and a hot compressor both look fine cold.

Leaks Get Located

Low charge means a hole. We find it at the coil, the flare, the service valve or the line set, and tell you what repairing it involves before topping anything up.

Nights and Weekends

24/7 emergency cooling. Heat waves do not fail politely at ten on a Tuesday morning, and neither do compressors.

Any Badge on the Box

NATE-certified technicians on every brand of condenser, air handler, mini-split and rooftop unit, no matter which company installed it.

The visit

How a No-Cool Call Runs

Tell Us What Changed
When it started, what it sounds like, whether the outdoor unit is spinning. Those three answers already narrow the list before anyone drives out.
Gauges and Meter On
The technician runs the system and takes readings at both ends: pressures and line temperatures outside, air temperature split and static pressure inside.
You See the Numbers
What was measured, what it should have been, and which repair closes that gap. Where replacement is the better money we say so and show why.
Cold Air Verified
After the repair the same readings are taken again and left with you, so the next technician starts from evidence rather than from scratch.

No Cool Air? Call Now.

Emergency and same-week air conditioning repair across Northern New Jersey and New York City, any hour, every brand.

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Good questions

AC Repair FAQs

Why is my AC not cooling?

Start with what the equipment is doing. If the outdoor unit is silent, it is electrical or a safety switch has opened. If it is running and the air from the vents is barely cooler than the room, it is refrigerant or a filthy condenser. If the air is properly cold at the register but the house never gets there, the equipment is fine and the ducts are not delivering. Two things worth checking yourself first: the filter, and whether the thermostat fan is set to auto rather than on.

Why is my AC blowing warm air?

Warm rather than merely weak usually means the compressor is not running while the indoor blower still is. Common causes are a failed run capacitor, a contactor that will not pull in, a tripped high-pressure switch on a blocked condenser, or the outdoor disconnect pulled and never reseated after other work. If you can hear the indoor fan but the outdoor unit is dead quiet, that is the pattern.

Why is there ice on my AC line?

Ice means the coil dropped below freezing, and that happens for exactly two reasons: not enough air over it, or not enough refrigerant in it. Shut the cooling off, leave the fan running to thaw it, and change the filter while you wait. If it ices again after a clean filter, stop running it. Operating on a frozen coil sends liquid back to the compressor, which turns a small repair into a big one.

Why does my air conditioner keep tripping the breaker?

Something is drawing more current than the circuit allows, and the timing tells you where to look. Tripping the instant it calls points at a short or a locked compressor. Tripping after it has run a while points at a motor heating up, a failing capacitor loading the windings, or a condenser so dirty that head pressure is driving current past nameplate. Resetting a breaker repeatedly is worth avoiding — each attempt is another locked-rotor hit on the compressor.

Can you still get refrigerant for my older system?

If it is an R-22 system, production ended years ago and only reclaimed stock remains, which makes recharging a leaking unit an expensive way to buy a few weeks. Newer equipment runs R-410A, and the industry is now moving again to lower-impact blends. Where a system is old enough to be on R-22 and it has lost its charge, the conversation is usually about replacement rather than repair.

How much does AC repair cost?

Four things drive it: which component failed, whether the refrigerant circuit has to be opened, how the equipment is reached, and what refrigerant it holds. A capacitor on a ground-mounted condenser is the cheap end. An evaporator coil leak in an attic air handler on obsolete refrigerant is the other end, and at that point the honest advice is often to spend the money on new equipment. You get the diagnosis and the price before the work starts, and financing is available if it turns into a replacement.

Do you offer emergency AC repair at night or on weekends?

Yes — 24/7. During a genuine heat wave, no-cool calls involving infants, elderly residents or medical equipment are triaged ahead of routine work. Bergen, Hudson, Essex, Passaic and Union are the fastest runs; Sussex and Warren are long drives from Belleville and are handled as scheduled work wherever the situation allows. See emergency service.

Do you repair ductless mini-splits and heat pumps as well?

Yes, including inverter-driven equipment where the fault codes and control boards need brand-specific tools. ICS is a Mitsubishi Electric Diamond contractor and cold-climate heat pump certified. Mini-split faults skew differently from central systems — blocked drain lines in wall units, dirty blower wheels, and communication errors between indoor and outdoor boards. Details on ductless and heat pumps.

Where we work

AC Repair Service Areas

No-cool calls dispatched from Carlstadt, Belleville and Englewood Cliffs.

Bergen County Essex County Hudson County Passaic County Union County Morris County Somerset County Sussex County Warren County New York City All service areas

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Request Air Conditioning Repair

Describe the symptom in the form and a technician will call you back, or ring the line directly for anything urgent.

(866) 749-6331Answered around the clock for no-cool calls

mail@icshvac.comEmail our team

Carlstadt (shop & warehouse)736 Gotham Parkway, Carlstadt, NJ 07072

Belleville (main office)267 Cortlandt Street, Belleville, NJ 07109

Englewood Cliffs120 Charlotte Place, Suite 201, Englewood Cliffs, NJ 07632

Licensed & insuredNJ Master HVACR #19HC00444000

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