Why is my boiler not producing heat?

A boiler that runs but produces no heat often has a faulty circulator pump, a stuck zone valve, low water pressure, air in the system, or a tripped limit switch. Our technicians diagnose the exact cause on-site and repair it the same visit whenever possible.

Why is my boiler making noise?

Banging, gurgling, or whistling usually points to air in the pipes, low water pressure, a failing pump, or — in steam systems — water hammer from improper pipe pitch. We vent the system, adjust pressure, and correct pipe pitch to silence the noise.

Can steam boilers be repaired?

Yes. Steam boilers are very serviceable. We repair steam traps, air vents, water feeders, and burner issues, and we re-balance one-pipe and two-pipe steam systems for even, quiet heat throughout older NYC buildings.

What causes uneven heating from my boiler?

Uneven heat is typically caused by air in the lines, a failing circulator or zone valve, unbalanced steam vents, or sludged radiators. We diagnose the distribution problem and balance the system so every room reaches temperature.

Should I repair or replace my boiler?

If your boiler is under 15 years old with a single isolated fault, repair is usually the right call. If it's older, needs repeated repairs, or your bills keep rising, a replacement may cost less over time. We give you an honest, no-pressure recommendation.

Boiler Repair · Bronx · Queens · Brooklyn

Boiler Repair in NYC

No heat? Leaking boiler? Strange noises or low pressure? Metro Boiler Heating diagnoses and repairs steam and hot-water boilers fast for homes and businesses across the Bronx, Queens, and Brooklyn.

Call Now — (347) 263-5997 Request Service Online

Licensed technician diagnosing and repairing a residential boiler in Bronx, Queens & Brooklyn, NY

Common Boiler Problems We Repair

Boilers are durable, but when something goes wrong you need a technician who can find the real cause — not just swap parts. Here are the boiler problems we see and repair most often across NYC:

Boiler not working / no heat

A boiler that won't fire or produces no heat may have a faulty igniter, a tripped safety limit, low water pressure, or a failed circulator. We diagnose and repair it fast.

Boiler won't start

If your boiler won't ignite, the cause could be a locked-out burner control, no fuel supply, a bad thermocouple, or a thermostat fault. We troubleshoot the full control sequence.

Boiler making unusual noises

Banging, gurgling, or whistling points to air in the system, low pressure, a failing pump, or water hammer in steam pipes. We vent, re-pressurize, and rebalance.

Uneven heating

Cold rooms or hot-and-cold spots usually mean air in the lines, a stuck zone valve, unbalanced steam vents, or sludged radiators. We balance the system for even heat.

Leaking boiler

Leaks can come from a failed pressure relief valve, corroded heat exchanger, or a failing gasket. We locate the source and repair it before it causes water damage.

Low boiler pressure

Pressure that keeps dropping indicates a leak, a faulty expansion tank, or a failing pressure-reducing valve. We restore and stabilize your system pressure.

Pilot & ignition problems

A pilot light that won't stay lit or an intermittent ignition points to a dirty sensor, a bad thermocouple, or a faulty gas valve. We repair ignition safely.

Thermostat & heating control issues

Short-cycling, no response, or wrong temperatures often trace to a failing thermostat, aquastat, or zone control. We test and replace heating controls.

Boiler Systems We Service

Our licensed technicians repair every common boiler type found in New York buildings, from modern high-efficiency units to older cast-iron systems:

Steam boilers (one-pipe & two-pipe)
Hot-water boilers (gas & oil)
Gas boilers
Oil boilers
Older & cast-iron boilers
Residential & commercial boilers

Our Boiler Repair Process

We follow a clear diagnostic process so you understand exactly what's wrong and what it takes to fix it:

1
Listen & inspect
We start by understanding the symptoms you're seeing and inspecting the boiler, controls, piping, and radiators for visible faults.
2
Diagnose the root cause
We test the burner, ignition, pressure, circulator, zone valves, and controls to pinpoint the actual failure — not just the symptom.
3
Transparent repair plan
You get a clear explanation of the problem and the repair options before any work begins. No surprises, no unnecessary work.
4
Repair, test & verify
We complete the repair, fire up the system, test every safety control, and confirm even heat distribution before we leave.

Steam Boiler Repair & Hot-Water Boiler Repair

New York buildings rely on both steam and hot-water boilers — and each has its own common failure points. Our technicians are experienced with both.

Steam boiler repair

We repair banging pipes (water hammer), faulty steam traps and air vents, water feeder issues, and burner problems — and we rebalance one-pipe and two-pipe steam systems for even, quiet heat. See our steam heating service for more.

Hot-water boiler repair

We repair circulator pumps, zone valves, expansion tanks, pressure-relief valves, and air-bound systems that leave rooms cold. For system upgrades, see our hydronic heating and boiler installation pages.

Boiler Repair or Replacement?

Most boiler problems can be repaired — but sometimes replacement is the smarter long-term call. We'll always give you an honest recommendation. Replacement often makes sense when:

Your boiler is over 15 years old and repairs are adding up.
Energy bills keep climbing even though usage hasn't changed.
You've had two or more breakdowns in a single season.

For newer systems with isolated faults, a professional repair is usually the right move. Considering a new system? See our boiler installation page. For broader heating-system issues beyond the boiler itself, visit our heating repair page, and for urgent no-heat situations see our emergency boiler repair page.

Why Choose Metro Boiler Heating

Licensed & insured (Lic. #PH-48217)
20+ years serving NYC
Residential & commercial boiler repair
Honest repair-vs-replace guidance

Boiler Repair Service Area

We provide boiler repair to residential and commercial properties across the Bronx, Queens, and Brooklyn, NY, and surrounding neighborhoods. Same-day consultations are often available — call to confirm we cover your area.

Boiler Repair in The Bronx Boiler Repair in Queens Boiler Repair in Brooklyn

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