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AIR CONDITIONING & HEAT PUMP SYSTEMS
BACKDRAFTING HEATING EQUIPMENT
BACKUP HEAT for HEAT PUMPS
BANGING HEATING PIPES RADIATORS
BLOWER FAN OPERATION & TESTING
BOOKSTORE - InspectAPedia
BTU USAGE MONITORS
CARBON MONOXIDE - CO
CIRCULATOR PUMPS & RELAYS
DIAGNOSTIC GUIDES A/C / HEAT PUMP
DIAGNOSE & FIX HEATING PROBLEMS-BOILER
DIAGNOSE & FIX HEATING PROBLEMS-FURNACE
DIRECT VENTS / SIDE WALL VENTS
DRAFT REGULATORS, DAMPERS, BOOSTERS
DUCT SYSTEM & DUCT DEFECTS
ELECTRIC MOTOR DIAGNOSTIC GUIDE
FAN, AIR HANDLER BLOWER UNIT
FLOODED HEATING EQUIPMENT REPAIR
FLUE SIZE SPECIFICATIONS
GAS BURNER Flame & Noise Defects
GAS PIPING, VALVES, CONTROLS
GEOTHERMAL HEATING SYSTEMS
HEAT PUMPS, DIAGNOSIS, REPAIR
HEATING COST SAVINGS METHODS
HEATING OIL PIPING TROUBLES
HEATING OIL TANKS
HEATING SYSTEM NOISES
HEATING SYSTEM TYPES
GAS LP & NATURAL GAS SAFETY HAZARDS
MANUALS & PARTS GUIDES - HVAC
MIXING / ANTI-SCALD VALVES
MOTOR OVERLOAD RESET SWITCH
NOISE, HEATING SYSTEMS
ODORS FROM HEATING SYSTEMS
OIL FILTERS on HEATING EQUIPMENT
OIL FILL PIPE LEAKS
OIL SPILL CLEANUP / PREVENTION
PLASTIC Plexvent / Ultravent RECALL
PUFFBACKS, OIL BURNER
RELIEF VALVE LEAKS
Reset Switch - Heater Primary Control
RESET SWITCH - ELECTRIC MOTOR
Reset Switch - Stack Relays
SAFETY, HEATING INSPECTION
SAFETY RECALLS CHIMNEYS VENTS HEATERS
SOLAR HEATING SYSTEM DESIGNS
SOOT on OIL FIRED HEATING EQUIPMENT
STEAM HEATING SYSTEMS
THERMOSTATS, HEATING / COOLING
VIDEO GUIDES: Heating System Videos
WINTERIZE A BUILDING
WOOD, COAL STOVES & FIREPLACES
WOOD STOVE SAFETY
ZONE VALVES, HEATING
Heating boiler defects & operating problem troubleshooting: Here we explain how to recognize & diagnose problems with residential heating boilers, including loss of heat, heating boiler noises, leaks, odors, or smoke, and high heating costs. We identify different types of building heating systems and outline how to diagnose and repair heating system problems.
This article series answers most questions about central hot water heating system troubleshooting, inspection, diagnosis, and repairs. Also see OIL BURNERS or GAS BURNER Flame & Noise Defects depending on the fuel your boiler uses.
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If you have no heat and need help diagnosing the cause, see HEATING LOSS DIAGNOSIS-BOILERS or HEATING LOSS DIAGNOSIS-FURNACES. The photograph at page top shows a heating boiler which is burning through it's steel outer jacket - this condition is a potential fire hazard and requires immediate inspection and repair. There is probably a combustion gas leak at this heater. Contact us to suggest text changes and additions and, if you wish, to receive online listing and credit for that contribution.
If you don't know whether your heat is provided by a furnace (hot air) or boiler (hot water), or whether your fuel is oil, gas, or electric, it will be helpful to first review our descriptions of hot water or "hydronic" heating systems at BOILER COMPONENTS & PARTS and BOILER OPERATION DETAILS which describe hot water heating systems, and also review our descriptions of furnaces and hot air heat at FURNACES, HEATING COMPONENTS
Types of Defects and Problems with Hot Water Heating Boilers - Hydronic Heating Systems, Loss of Heat, Noises, Leaks
Complete details about all types of heating system noises, causes, cures, are found at HEATING SYSTEM NOISES. Noises specific to an oil burner used at heating boilers or water heaters are discussed at OIL BURNER NOISE SMOKE ODORS. Excerpts below focus on some of the most common heating system noises.
When observing evidence of leaks on a heating boiler, keep these points in mind:
How to Recognize & Diagnose Inadequate Combustion Air, Sooting, or Burn Marks at Oil-Fired Heating Systems
Lack of adequate combustion air (see COMBUSTION AIR ) can be indicated by or can result in these heating system operating and heating system safety worries:
Unsafe Air Conditioning or Heating Duct Openings which describes the risks of
reduced combustion air on hot air heating systems when certain return air duct defects are present, and also see
CARBON MONOXIDE - CO and CHIMNEY INSPECTION DIAGNOSIS REPAIR
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Questions & answers or comments about diagnosing problems with residential hot water heating systems: the heating boiler
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