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AIR CONDITIONING & HEAT PUMP SYSTEMS
A/C - HEAT PUMP CONTROLS & SWITCHES
AIR CONDITIONER COMPONENT PARTS
AIR CONDITIONER TYPES, ENERGY SOURCES
AIR FILTER EFFICIENCY
AIR FILTERS, FIBERGLASS PARTICLES
AIR FLOW MEASUREMENT CFM
APPLIANCE EFFICIENCY RATINGS
BLOWER DOORS & AIR INFILTRATION
BLOWER FAN CONTINUOUS OPERATION
BLOWER FAN OPERATION & TESTING
BOOKSTORE - Air Conditioning "How To" Books
CAPACITORS for HARD STARTING MOTORS
CLEANING & Legionella BACTERIA
CHINESE DRYWALL HAZARDS
CONDENSATION or SWEATING PIPES, TANKS
DEFINITION of Heating & Cooling Terms
DEW POINT CALCULATION for WALLS
DEW POINT TABLE - CONDENSATION POINT GUIDE
DIAGNOSTIC GUIDES A/C / HEAT PUMP
DIAGNOSE & FIX HEATING PROBLEMS-BOILER
DIAGNOSE & FIX HEATING PROBLEMS-FURNACE
DUCTS - Asbestos
DUCT INSULATION, Asbestos Paper
DUCT INSULATION for SOUNDPROOFING
DUCT SYSTEM & DUCT DEFECTS
DUCT SYSTEM NOISES
DUCTS, Asbestos Transite Pipe
DUST, HVAC CONTAMINATION STUDY
ELECTRIC MOTOR OVERLOAD RESET SWITCH
EVAPORATIVE COOLING SYSTEMS
FAN LIMIT SWITCH
GAS EXPOSURE EFFECTS, TOXIC
GAS DETECTION INSTRUMENTS
HEAT LOSS (or GAIN) in buildings
HEAT LOSS (or GAIN) INDICATORS
HEAT LOSS R U & K VALUE CALCULATION
HEATING SMALL LOADS
INSPECTION CHECKLIST - OUTDOOR UNIT
INSPECTION LIMITATIONS, A/C SYSTEMS
LEED GREEN BUILDING CERTIFICATION
LOST COOLING CAPACITY
LOW VOLTAGE TRANSFORMER TEST
MOTOR OVERLOAD RESET SWITCH
MOLD in AIR HANDLERS & DUCT WORK
OPERATING COST, AIR CONDITIONER
OPERATING DEFECTS, AIR CONDITIONING
REPAIR GUIDES A/C / HEAT PUMP
REPAIR & DIAGNOSTIC FAQs for A/C
THERMOSTATS, HEATING / COOLING
THERMOSTATIC EXPANSION VALVES
WATER COOLED AIR CONDITIONERS
WINDOW / WALL AIR CONDITIONERS
WINDOW / WALL A/C SUPPORTS
Air conditioner defect checklist: here we list the types of critical problems that may occur in air conditioning or heat pump systems, a first step in understanding how an air conditioning service technician will diagnose certain common air conditioning system failures or defects. This air conditioning/heat pump inspection guide lists critical air conditioning system defects which a building inspector or owner should not miss. We include photographs to assist readers in recognizing cooling system defects. This HVAC article series describes the inspection, diagnosis & repair of residential air conditioning systems (A/C systems) & heat pump systems to diagnose problems as well as to inform home buyers, owners, and home inspectors of common cooling system defects.
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Beginning at AIR CONDITIONING & HEAT PUMP SYSTEMS the major components of an air conditioning system are described, sketches and photographs are provided, and common defects for each cooling system component are listed along with visual or other clues that may suggest a problem or probable failure of A/C components.
Example home inspection report language used to report air conditioning system defects and cooling system repairs needed is provided to describe common air conditioning system defects. We continue to add to and update this text as new details are provided. Contact us to suggest text corrections or additions and, if you wish, to receive online listing and credit for that contribution.
Critical defects which an inspector should not fail to detect when examining any building component or system are defects which form an immediate, significant safety hazard or defects which are quite likely to involve significant repair or replacement cost, and which involve components or systems which are necessary to occupy and use the building. Methods for detection and diagnosis of these defects are discussed in this document and in its references. Suggestions for inclusion or exclusion of items in this list are invited - see the link "Contact Us".
Observation of the condition of an air conditioning or heat pump system, typical inspection report language includes these succinct descriptions
Operating Note: Many such air conditioning systems must be left with power turned on (we found switches in the "off" position) for 24 hours prior to running the equipment. This permits heaters at the compressors to assure good oil flow in those components. To operate the equipment without this step risks very costly damage to the compressor. When a system is not operated we can make no representation that it functions correctly and adequately.
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Technical Reviewers & References
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