Radiators are everywhere in Manhattan's older apartment buildings, and when one will not heat it is usually a local problem: a stuck steam vent, a failed valve, or air in a hot-water radiator. If several radiators are cold, the building's boiler or risers may be involved, which means coordinating with your super or management. We repair radiator valves, vents and leaks across Manhattan and tell you whether the problem is at the radiator or upstream.
Prefer the citywide overview? See our main radiator repair page, or our Manhattan plumbing page.
Many older apartments have steam radiators with a single supply valve and an air vent. Failed vents and closed or stuck valves are among the most common reasons a radiator stays cold.
Banging steam radiators are often caused by trapped water or a radiator that is not pitched properly. We look at the pitch, valve and piping.
In apartment buildings, radiators may connect to a shared riser. A leak at the valve may be ours to fix, while a riser problem is a building matter.
A cold or leaking radiator in a Manhattan apartment can involve you, your neighbors and the building. A valve leak inside your unit is a repair we can handle, but anything that requires shutting down a riser affects other apartments and needs management's involvement.
Tell us your building type and whether the heat is on elsewhere in the apartment. That quickly separates a single-radiator repair from a building-wide problem.
A studio in Murray Hill has one radiator that never gets warm. Next door, the radiator is too hot and the window is open. A brownstone floor-through in Harlem has a radiator that knocks loudly each morning. A leaking valve in an East Village walk-up is dripping into the apartment below. Each is a radiator-level problem with its own cause: a failed vent, an uncontrolled valve, poor pitch, worn packing.
These are illustrations of the kinds of problems we are asked about, not case studies.
On a steam system, a radiator needs its air vent to release air so steam can fill it. A clogged or failed vent leaves it cold. A radiator that is not pitched back toward its supply valve can collect water and bang. On a hot-water system, trapped air collects at the top and leaves the radiator cold there until it is bled. A valve that is stuck or closed stops flow on either system, and a leak at the valve packing or union usually means a worn part.
If many radiators or the whole building are cold, the cause may be the boiler. See boiler repair in Manhattan.
Place a pan and towel under the leak, and if you can safely turn the radiator valve off, do. On a steam radiator, do not open vents or unions, because the unit can be hot and under pressure. A persistent drip can damage floors and the unit below, so call promptly. For urgent water problems in Manhattan, see emergency plumbing in Manhattan.
Steam radiators usually have a single supply valve and an air vent, and depend on the vent letting air out so steam can fill the unit. Hot-water radiators are fed by a pump, often have a bleeder valve at the top, and depend on air being removed from the system. Identifying which you have is the first step of any repair.
Cast-iron radiators can last a very long time, but their valves, vents and connections are wear items. Most radiator problems are fixed at those parts and not by replacing the radiator.
Confirm that the radiator valve is fully open and that other radiators in the home are heating. On a hot-water radiator that is hot at the bottom and cold at the top, air may need to be bled from the bleeder valve. Do not try to open or force a steam vent or union, because they can be hot and under pressure. If the radiator still does not heat, call us and describe what you see.
A single vent or valve replacement is usually the simplest repair. Scope grows when the system must be drained, when valves are seized, when pipes have sagged or when the cause is upstream. We explain what we find as we find it, and say so when the boiler is the real problem.
We serve every neighborhood in Manhattan, including Chelsea, East Village, Financial District, Greenwich Village, Harlem, Hell's Kitchen, Inwood, Lower East Side, Midtown, Murray Hill, Soho, Tribeca, Upper East Side, Upper West Side, Washington Heights.
We confirm steam or hot-water, and how many radiators are affected.
We check the valve, vent, pitch and connections.
You get the price before the repair starts.
We confirm the radiator heats and holds without leaking.
Radiator Repair across Manhattan.
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