No heat tonight: checks before you call
Start with what costs nothing. These checks fix a surprising number of cold-house calls, and they give the technician better information if you still need a visit.
Do not open sealed boiler covers or touch the burner area. Pressure and heat can injure you.
- 1Check the thermostatSet it several degrees above room temperature and confirm batteries are fresh.
- 2Look at the boiler switch and breakerThe service switch near the stairs and the breaker for the boiler can both trip.
- 3Read the pressure gaugeMost home boilers sit in a low range when cold. Zero or well above the red zone means call.
- 4Check the fuelFor oil, look at the tank gauge. For gas, confirm the shutoff valve is open and other gas appliances work.
- 5Find the reset button onceOne press is fine. Pressing it repeatedly can flood the burner chamber with fuel.
How urgent is your boiler problem?
Book a service visit
Slight noise, uneven radiators or an annual tune-up is due.
Call today
No heat but safe, repeated lockouts or a pressure that keeps dropping.
Leave and call
Gas or fuel smell, soot, carbon monoxide alarm or a leak near the burner.
What the symptoms usually point to
| Symptom | Common cause | What happens next |
|---|---|---|
| No heat, boiler silent | Tripped switch, dead thermostat or control board | Quick power and control test |
| Boiler fires then shuts down | Dirty flame sensor, blocked flue or low water | Cleaning, flue check, pressure check |
| Pressure keeps dropping | Leak in piping, relief valve or expansion tank | Pressure test and visual leak search |
| Banging or kettling | Scale or sludge in the heat exchanger | Flush or descale |
| Radiators cold on top | Air trapped in the system | Bleed the radiators |
| Leak under the boiler | Failed fitting, pump seal or heat exchanger | Isolate and assess |
Older houses and boilers in Voorhees
The Census American Community Survey counts 12,772 housing units in Voorhees, and 1,111 of them were built before 1960. Houses from that era are the ones most likely to still rely on a boiler and radiators.
Original piping, cast iron radiators and older circulator pumps all age differently from the boiler itself. A technician will look at the whole loop, not only the burner, so a new part does not fail from an old problem.
Source type: Census American Community Survey housing estimatesHow we diagnose a boiler
- 01
Look at the controls
We read error codes and check the aquastat, limit switch and thermostat wiring.
- 02
Test the burner and ignition
A combustion analyzer on gas and oil units shows if the flame is clean and safe.
- 03
Check pressure and water level
The expansion tank, relief valve and fill valve decide whether pressure is stable.
- 04
Test the circulator pump
We confirm the pump runs, the valves open and the zones receive heat.
- 05
Explain the repair options
You see what is failing, what it takes to fix and the clear price before work starts.
Repair or replace the boiler
Age, safety and parts availability should drive this call.
Repair
Right for a sound heat exchanger with a failed pump, valve, sensor or board.
- Fastest way to restore heat
- Cost is limited to the part
- Does not fix an old, leaking vessel
Replace
Right when the heat exchanger leaks, repairs repeat or parts are scarce.
- Fresh efficiency and a new warranty
- Planned work, not a same-night job
- Old boiler removal can be included
Switch systems
Some owners use this as a reason to rethink heat.
- Discuss with plumbing installation
- Hot water heating differs from forced air
- Check the Voorhees Construction Department for permits
When NOT to keep repairing
If the heat exchanger leaks or the boiler has soot, a cracked section or a history of carbon monoxide trouble, stop repairing. A cheaper part will not fix a failed pressure vessel.
What affects boiler repair costs
Fuel type
Gas, oil and electric boilers use different parts and tests.
Part availability
Older models can need hard-to-find pumps or control boards.
Piping condition
Corroded pipes or leaking valves add to the visit.
Time of the call
After-hours and weekend dispatch is priced differently from scheduled service.
System size and zones
More zones mean more valves, thermostats and pumps to test.
Insurance note. Homeowner insurance may cover sudden water damage from a burst heating pipe, but typically not wear and tear on the boiler, so check your policy. We give a clear price before work starts and explain any parts we recommend replacing.
Keep the pipes from freezing while you wait
A boiler outage in a cold snap can freeze supply lines in a garage or crawlspace. Open cabinet doors under sinks on exterior walls, let a faucet drip slowly and use safe space heaters only if they are rated for the room.
If a pipe does burst, shut off the main water and call. Our burst pipe repair page covers that scenario. We also serve Lindenwold and nearby boroughs.
Sources and references
The points above draw on these public standards, codes and guidelines. Rules change, so confirm current requirements with the agency or utility named before you rely on them.
- U.S. Census Bureau: QuickFacts and American Community Survey 2020 to 2024 estimates
Common questions
Yes. The 24/7 line is open at night and on weekends, and we book same-day visits when a technician is free. Check the thermostat, switch and pressure gauge while you wait.
A small leak in the piping, a weeping relief valve or a failed expansion tank is the usual cause. Do not keep refilling it without finding the source, since fresh water adds more scale.
Usually yes, with a radiator key and a cloth for the first drip. Close the bleed screw when water appears. If pressure drops afterward, check the gauge and top up only if the manufacturer allows.
Often scale or sludge inside the heat exchanger boils and knocks. A flush can help, but if it is severe the unit may be near the end.
Yes, removal can be part of a replacement. Mention both when you call so we can plan the lift and disposal.
Yes. Have working detectors on each floor. If an alarm sounds, leave the house, call 911 and do not return until it is cleared.