Because our technicians are licensed plumbers as well as heating techs, a boiler that is leaking, a radiator that will not heat or a frozen baseboard loop is a normal repair for us, not a reason to send a second company. You get a diagnosis you can understand and a firm price before the repair begins.
Signs your heating system needs repair
- No heat, or the thermostat calls and the system never starts
- The system starts, runs for a minute and shuts off, over and over
- Some rooms or one floor stay cold while the rest of the house is fine
- Radiators or baseboard that are cold at the far end of the loop
- Banging, whistling, screeching or a new rumble from the boiler or furnace
- Water on the floor around the boiler or under a furnace
- The gas bill jumped without a change in the weather or the thermostat
- A burning smell, a yellow flame instead of blue, or a carbon monoxide alarm
Heating systems and repairs we handle
Gas furnaces
Ignitors, flame sensors, pressure switches, inducer and blower motors, limit switches, control boards and gas valves. We test the heat exchanger for cracks on every furnace that is running strangely.
Hot-water boilers
Circulator pumps, zone valves, expansion tanks, relief valves, auto-fill valves, aquastats and leaking sections on cast iron and modern condensing boilers.
Steam boilers
Low-water cutoffs, pressuretrols, pigtails, sight glasses, main and radiator vents, steam traps and the near-boiler piping that decides whether a steam system runs quietly or hammers.
Heat pumps
Defrost controls, reversing valves, refrigerant faults, outdoor fan motors and the auxiliary heat strips that carry the house through a cold snap.
Thermostats and controls
Failed thermostats, bad low-voltage wiring, transformers, relays and smart thermostats that were never wired for the system they are controlling.
Zone problems
One zone cold, one zone that never shuts off, zone valves stuck open or closed, circulators that hum but do not pump, and air trapped in the loop.
Radiators and baseboard
Bleeding air, replacing failed vents and valves, freeing stuck radiator valves, and repairing leaking baseboard elements and piping.
Honest repair-versus-replace guidance
When the repair bill is a large fraction of a new system, or the heat exchanger or boiler section has failed, we say so and give you a replacement price to compare.
How a heating repair call works
- 1
Call and describe what you see
We ask what the system is doing and may suggest a quick check, like the thermostat batteries, the emergency switch or the breaker, that solves it on the phone.
- 2
Diagnosis at the equipment
We test the sequence of operation from the thermostat call to the burner, measure what needs measuring and find the actual fault rather than replacing parts on a hunch.
- 3
Plain explanation and a firm price
You hear what failed, why, and what it costs to fix, by the job. If it is a replace-not-repair situation, you hear that too.
- 4
Repair, test and safety check
After the repair we run the system through a complete cycle, check combustion and venting on gas equipment, and confirm every zone is heating.
Why Master’s Plumbing
Why North Jersey homeowners call us for heating repair
- Furnaces, hot-water boilers, steam boilers and heat pumps, all handled by one company
- Licensed plumbers on the call, so boiler piping and radiator work is never a hand-off
- 24/7 live answer for no-heat calls
- Upfront by-the-job pricing before the repair starts
- Stocked vans for the common ignitor, sensor, pump and valve failures
- Honest advice on when a repair is worth it and when it is not
Heating Repair across North Jersey
Master’s Plumbing is based in Roselle and provides heating repair throughout Union County, Essex County, Bergen County, Passaic County, Hudson County, Morris County. Not sure if we cover your town? Call and ask, or check the full service area.




