Repair guide
Fan Coil Not Heating or Cooling in a Manhattan Apartment: Yours or the Building's?
How to tell whether a Manhattan apartment fan coil problem is in your unit or in the building's water system, including two-pipe seasonal changeover. A technician diagnoses the problem on site and gives a written quote before any approved work begins. Gotham Home Services Inc. holds NYC home improvement contractor license 2132513-DCWP.
Quick answer
Many Manhattan co-ops, condos and rental towers heat and cool apartments with fan coil units fed by the building's hot and chilled water. When a fan coil stops working, the fault may be in the unit, such as a failed fan motor, a stuck valve, a bad thermostat, a clogged filter or an overflowing drain pan, or it may be the building. In two-pipe buildings, each riser carries either heat or cooling, so spring and fall changeover can leave apartments without the mode they want. Gotham Home Services diagnoses in-unit fan coils in Manhattan and explains which side owns the fix.
Published · Updated
If your Manhattan apartment has a cabinet under the window or a unit behind a ceiling grille that blows warm air in winter and cool air in summer, it is probably a fan coil. Knowing how it works saves a lot of back-and-forth with management. For booking, see HVAC repair in Manhattan and across NYC.
Key points
- 1.Fan coils use building hot or chilled water; the unit itself only moves air across a coil
- 2.Two-pipe buildings deliver either heating or cooling at a time, not both
- 3.Changeover periods in spring and fall are a building schedule, not an apartment fault
- 4.In-unit faults include the fan motor, capacitor, valve, thermostat, filter and drain pan
- 5.Ask the super whether neighbors on your riser have the same problem
- 6.Building risers, pumps and boilers belong to the building's own contractor
In more detail
A fan coil has no compressor or burner of its own. Water from the building's boiler or chiller runs through a coil, a valve controls the flow, and a fan pushes room air across it. In a four-pipe building, separate hot and chilled water lines let each apartment choose heating or cooling at any time. In a two-pipe building, the same pipe carries hot water in winter and chilled water in summer, and the building switches over on a schedule. During that changeover, a warm October day or a cold May night can leave an apartment with the wrong mode, and nothing in the apartment is broken. A similar split between building and unit applies to the systems in prewar NYC apartments.
When the problem is in the unit, the signs are local: the fan does not spin or hums without turning, the fan runs but the air is room temperature while neighbors are comfortable, the thermostat does not respond, or water collects under the cabinet. Common causes are a failed fan motor or capacitor, a valve actuator stuck closed, a thermostat fault, a filter packed with dust, or a clogged drain pan in cooling season. Through-wall PTAC units fail in different ways, covered in why a PTAC stops cooling.
Before booking, ask the super whether others on your riser have the same complaint. If they do, the fix is the building's. If it is only your apartment, an in-unit diagnosis can confirm the part. Many buildings require contractor insurance paperwork and set work hours, so mention those rules when you call, and see what to do before the technician arrives if water is reaching the floor.
FAQ
Frequently asked questions
Fan Coil Not Heating or Cooling in a Manhattan Apartment: Yours or the Building's?
Many Manhattan co-ops, condos and rental towers heat and cool apartments with fan coil units fed by the building's hot and chilled water. When a fan coil stops working, the fault may be in the unit, such as a failed fan motor, a stuck valve, a bad thermostat, a clogged filter or an overflowing drain pan, or it may be the building.
What are the key points to remember?
Fan coils use building hot or chilled water; the unit itself only moves air across a coil. Two-pipe buildings deliver either heating or cooling at a time, not both. Changeover periods in spring and fall are a building schedule, not an apartment fault. In-unit faults include the fan motor, capacitor, valve, thermostat, filter and drain pan. Ask the super whether neighbors on your riser have the same problem. Building risers, pumps and boilers belong to the building's own contractor.
Does Gotham Home Services serve my area?
Yes. Gotham Home Services serves Manhattan, Brooklyn, Queens, the Bronx, Staten Island and Long Island.
How do I get a quote?
Call (516) 348-5145 or request a quote online. A technician diagnoses the problem on site and gives a written quote before any approved work begins.