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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
Uneven or incomplete heat diagnosis & repair for buildings: this article describes the diagnosis & repair of cold heating baseboards, convectors, radiators, or steam radiators.
We provide articles that help in diagnosing and repairing no-heat problems with each types of hot water or steam or fan convector heat delivery systems.
We include a list of things to check if some building areas are not receiving heat or are receiving too little heat.
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Mixed hot water & steam combinastion heating systems
As Carson Dunlop's sketch (left) shows, a mixed heating distribution system that combines cast iron radiators (or wall convector units) with heating baseboard in the same heat distribution piping loop can produce uneven performance.
The heating system's behavior will also be affected by the location of the thermostat. In our sketch, the heating control thermostat is located near the radiator.
Because cast iron radiators take longer to get hot in response to circulating hot water in the system than does finned-tubing baseboard, the room where the baseboard heat is installed will be very hot, maybe too hot, early in the heating cycle (while the radiator is heating up).
Then as the thermostat (located near the radiator) is satisfied and stops the boiler or circulator pump from sending hot water through the heat distribution piping, the hot, high-thermal mass cast iron radiator will continue to warm the room where it is located, while the room with the finned-tubing baseboard will cool off more rapidly.
The result may be that the room heated by the finned-tubing baseboard will be sometimes "too hot" and other times "too cold".
Advice for regulating steam heat to improve even heat delivery in a building is found at RADIATOR STEAM VENTS, 1-PIPE SYSTEMS.
List of Things to Check if Heat in the Building is Uneven or Incomplete with Some Areas Receiving little or no heat
Watch out If part of a building is getting heat and part is not, and the problem is not the radiator or baseboard itself, check these possible causes of uneven or partial heat distribution:
Continue reading at RADIATORS or select a topic from the More Reading links shown below.
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Questions & answers or comments about how to diagnose and fix uneven heat problems in buildings with hot water heat.
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