Heating Problem Guides

Heating Symptoms We Cover

Written by the All Island Comfort service team from the no-heat calls we actually run across Suffolk and Nassau. Each guide covers what your symptom usually means, the checks you can safely make yourself, real repair costs, and when to pick up the phone.

• No Heat in the House

  Five checks to run before you call, what each symptom means, and when no heat becomes an emergency.

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• Boiler Won't Turn On

  Controls, pressure, low-water cutoffs, and ignition: why boilers go quiet and what to check.

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• Oil Burner Reset Button & Lockouts

  Press it once, and only once. Why burners lock out and what repeated resets really cost.

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• Furnace Blowing Cold Air

  Fan settings, filters, igniters, and flame sensors: why the air went cold and what to check.

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• Banging Pipes & Water Hammer

  Steam hammer, baseboard ticks, and true water hammer. Tell them apart and know which matters.

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• Uneven Heating & Cold Rooms

  One room freezing while the rest are fine. Airflow, zones, and radiator fixes by system type.

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• Thermostat Not Working

  Blank screens, rooms that never reach setpoint, and smart thermostat wiring gotchas.

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• Radiators Not Getting Hot

  Steam vents, air-bound loops, and bleeding: why radiators go cold and which fix is yours.

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• Boiler Leaking Water

  Where the water comes from decides the repair. Relief valves, gaskets, and the leaks that mean replacement.

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• Oil Smell in the House

  Normal after a delivery, or a weeping tank? How to tell, and when the smell is urgent.

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• Heat Pump Blowing Cold Air

  Half these calls are a false alarm. The thermometer test, defrost mode, and the real faults.

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• Furnace Short Cycling

  Starts, stops, repeats. Filters, flame sensors, blocked vents, and why cycling kills parts.

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All guide categories