Aber HVACRCommercial HVAC
Rooftop Unit Repair in North Jersey when the RTU stops heating or cooling.
A rooftop unit that quits empties a store, a dining room or an office fast. Most rooftop units here are gas packs, cooling and gas heat in one box, and we fix both sides. Call, or text a photo of the unit's label and the thermostat, and we take it from there. Licensed NJ Master HVACR, EPA 608 Universal certified.
(973) 356-8290Paterson, Wayne, Clifton, Totowa, Little Falls, Woodland Park, Haledon, Hawthorne, Fair Lawn and Elmwood Park, and the rest of North Jersey
Rooftop unit not heating
Stores · Restaurants · Small offices
On a gas pack the heat comes from a gas burner section inside the rooftop unit. When the building goes cold, this is what we check.
- No ignitionThe unit calls for heat but never lights: the igniter, the ignition control board and its error code.
- The inducer motorThe small fan that clears the burner box before it lights. If it doesn't run, or its pressure switch doesn't close, the burners never get gas.
- The flame sensorThe burners light and go out after a few seconds. A dirty or worn flame sensor is one of the most common reasons.
- The gas valveGas reaching the unit, the valve opening when it is told to, and the pressure it delivers to the burners.
- The burnersRust, debris and nests block burners on a unit that sits outside all year.
- The heat exchanger and limit switchesA unit that lights and shuts down on high temperature, low airflow, a failed blower or belt, or a heat exchanger that needs a closer look.
- Thermostat and controlsWiring, settings and the economizer, which can let in cold outside air when it sticks open.
Smell gas?Leave the building and call your gas company or 911 from outside. Don't switch anything on or off, and don't try to relight the unit.
Rooftop unit not cooling
Stores · Restaurants · Small offices
Warm air from the vents, or a unit that runs all afternoon and never catches up. This is what we check on the cooling side.
- The compressor and its electrical partsContactors, capacitors and overloads wear out on a unit that runs every day all summer.
- Condenser fans and coilA failed fan motor, or a coil packed with dust, cottonwood or grease from a kitchen exhaust, and the unit can't shed heat.
- Refrigerant leaksFound and repaired before the system is recharged; adding refrigerant alone only buys time. EPA 608 Universal certified.
- The blower and beltA broken or slipping belt, or a failed blower motor, and little air reaches the space.
- Dirty filters and a frozen evaporator coilLow airflow ices the indoor coil, and the unit blows less and less cold air.
- Thermostat, controls and the economizerA setting, a wire, or an economizer damper stuck open on a hot day.
- The condensate drainA clogged drain that backs up and leaks water through the ceiling.
Check this before you call
The thermostat. Is it set to heat or cool, is the setting where it should be, and does the display have power? Check that nobody changed the schedule.
The breaker. Reset a tripped breaker once. If it trips again, leave it off and call.
The filters. If you change them yourself, check whether they are due. A clogged filter can stop both heating and cooling.
The gas. For no heat, check that other gas equipment in the building works. If it doesn't, the gas supply may be off.
Water. Water dripping from the ceiling near a vent points to the condensate drain. Turn the unit off and call.
Leave the roof to us: don't open the unit's panels, and don't keep resetting it. A unit left as it is lets us see the fault when we arrive.
When to call us
- No heat, or the space never reaches the thermostat setting
- The unit clicks or hums but never lights, or lights and shuts off
- Warm air from the vents with the thermostat on cool
- The unit runs without stopping, or starts and stops every few minutes
- Water dripping from the ceiling, or ice on the lines
- A new noise, a burning smell, or a breaker that keeps tripping
How it works
Call or text. Tell us what the unit is doing. A photo of the unit's label with the model and serial number helps us come with the right parts.
We come out. Nights and weekends too, because a store without heat or air can't wait for Monday. We tell you what it needs before any work starts.
We fix it. One unit or every unit on the roof. Next time, call the same number.
Questions
Do you fix both the heating and the cooling side?
Yes. On a gas pack we work on the gas heat section and the cooling side, from ignition and burners to compressors and refrigerant leaks.
Do you come at night and on weekends?
Yes. A rooftop unit that quits on a Saturday is an emergency for a store or a restaurant, and we take emergency calls nights and weekends.
Which equipment do you work on?
Rooftop units, split systems, heat pumps and mini-splits. We are trained and certified on Toshiba-Carrier, Daikin, Fujitsu and Samsung systems, and EPA 608 Universal certified to handle refrigerants.
Where do you work?
We are based in Paterson and cover Wayne, Clifton, Totowa, Little Falls, Woodland Park, Haledon, Hawthorne, Fair Lawn and Elmwood Park, and the rest of North Jersey. Commercial projects anywhere in New Jersey.