Buzzing aquastat relay (C) D FriedmanHeating System Noise Problems
Diagnose, & Cure Heating System Noise Problems

  • HEATING SYSTEM NOISES in BUILDINGS - CONTENTS: Building heating system noises, a concise catalog of sources of building heating system noises: lists of causes, cures, and detection methods for heating system noise complaints
  • POST a QUESTION or READ FAQs about diagnosing the source and finding the cure for noises or sounds in or around buildings and their systems
  • REFERENCES
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Building heating system noise troubleshooting: causes & cures of heating system noises & sounds.

These articles discuss building noise control: how to inspect, diagnose & cure heating system noise or sound problems in homes or commercial buildings.

Our page top photo shows investigation of a buzzing heating boiler aquastat relay.



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Heating System Noises & Building Temperature-Change Noises

Circulator pumps (C) Daniel FriedmanOur detailed article series on heating system noises is found at

A quick guide to heating system noise troubleshooting is given just below.

Heating systems and building heat as a source of indoor noises and sounds include air bubbling in piping, shrieks (bearings), bangs (puffbacks), rumbling (air noise, mechanical noise), grinding noises, and other mechanical noises.

  1. See OIL BURNER NOISE SMOKE ODORS and

    BOILER OPERATING PROBLEMS if your heat is by hot water.
  2. For steam heat system noises see STEAM HEATING SYSTEMS;

    for warm air heat see FURNACES, HEATING and DUCT SYSTEM DEFECTS.

    Steam heat can also produce (normal) hissing sounds as air escapes from steam radiator valves. If your steam pipes are making a horrible hammering or banging noise,
    see BANGING HEATING PIPES RADIATORS.
  3. Since heating system malfunctions that result in un-wanted noise may also produce smells,
    see ODORS GASES SMELLS, DIAGNOSIS & CURE.
  4. All heating systems can cause creaking or popping noises as heating system and piping or ductwork expand (and contract) through the heating cycle, though meticulous installation or repair can usually stop those sounds.

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