Heat pump schematic (C) Carson Dunlop AssociatesHeat Pump Component Defects List & Home Inspection Education
     

  • DEFECTS LIST - HEAT PUMP SUBSYS - CONTENTS: Heat pump inspection recommendations & typical defects list. Lists of important heat pump subsystem & component defects for residential buildings. \What does a home inspector need to know about the components & subsystems in heat pumps? Home inspection training and education curriculum recommendations for heat pump components
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Heat pump subsystem defects list:

Education curriculum & inspection checklists for heat pump systems. This article follows DEFECTS LIST - HEAT PUMP and lists significant heat pump component and ancillary subsystem defects, definitions, and home inspection education topics.

This article series, beginning at BUILDING DEFECTS LISTS, provides lists of common building defects and basic defect knowledge that also outline recommended curriculum content for home inspector education.

The building defects and inspection points listed in these articles also guide homeowners and home buyers to building areas that merit careful attention and often point areas of safety concern or important maintenance and repair tasks. Page top heat pump schematic courtesy Carson Dunlop Associates.

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Home Inspection Education Curriculum - Heat Pump: Defects in Backup heat, Condensate Handling, Duct Systems, Expansion Devices, Fans-outdoor, Refrigerant lines, Thermostats

A/C Condensate Drain Pan  Defects                    

      • Dirt in pan                      

      • Inappropriate pan slope      

      • No float switch

      • No auxiliary pan              

      • Pan not well secured

      • Pan cracked                    

      • Pan leaking or overflowing       

      • Rust or holes in pan 

Shared drain

Missing drain

Clogged drain

Leaks  

Condensate Drain Piping Line Defects

• Blocked or crimped

• Disconnected or missing

• Improper discharge point

• Leaking, damaged, split

• No trap

Condensate Disposal Pump Defects

• Inoperative

• Leaking

• Poor wiring

• improper discharge location

• crimped, bent blocked discharge tube

Duct Vapor Barriers

• Damaged

• Missing

• No float switch

• No auxiliary pan 

• Pan not well secured

• Pan cracked                            

• Pan leaking or overflowing             

• Rust or holes in pan                   

Thermal Expansion Devices: Cap Tube & TEV Defects on Heat Pump Systems                                                       

• Capillary tube crimped,           

disconnected, leaking

• Thermostatic expansion valve           

loose, clogged, sticking                     

Outdoor Condenser/Fan Unit Defects on Heat Pump Systems    

• Corrosion                              

• Dirty

• Excess noise or vibration     

• Inoperative                       

• Mechanical damage                

• Obstructed airflow                

Refrigerant Line Defects on Heat Pump Systems

• Damaged

• Leaking

• Lines too warm or too cold

• Lines touching each other

• Low points or improper slope in lines

• Missing insulation

Indoor AHU Fan Unit Condensing Coil Defects on Heat Pump Systems      

• Corrosion                              

• Damage

• Dirty       

• Dirty or missing filter     

• Excess noise or vibration       

• Inoperative              

• Misadjustment of belt or pulleys 

• Undersized       

Room Thermostat Defects on Heat Pump Systems                     

• Damaged

• Dirty

• Inoperative

• Loose

 • Not level

• Poor adjustment or calibration

• Poor location

Duct System Defects on Heat Pump Systems

• Dirty

• Disconnected or leaking                

• Humidifier damper missing

• Incomplete

• Obstructed or collapsed  

• Poor support

• Poor balancing                        

• Supply or return registers

– Too few                         

 – Poor location                   

 – Obstructed

• Undersized for cooling

• Weak airflow    

Duct Insulation Defects on Heat Pump Systems

• Incomplete

• Missing

• Incomplete

• Missing                                      

Backup Heat System Defects on Heat Pump Systems

• Missing

• Inoperative

• Poor location

• Runs continuously

Readers should see AIR CONDITIONING & HEAT PUMP SYSTEMS for our complete list of articles on this topic.

Use the Search Box at the top or bottom of these pages to find in-depth information about building, energy savings, and indoor environment inspection, diagnosis and repair at this website. Watch out: these inspection lists do not list all possible defects for the systems discussed, and not all home or building inspectors will examine all of the items listed here. CONTACT us to suggest corrections or additions to articles at this website.

Also see HEAT PUMP DEFECTS LIST

and see CONDENSATE HANDLING, A/C

and DUCT SYSTEM & DUCT DEFECTS

and see these heat pump article groups

These curriculae and building defect lists are based on smilar curriculum documents first prepared by Joe Scaduto, an (American Society of Home Inspectors) ASHI member who prepared course material for Northeastern University's Building Inspection Certificate program in 1988, subsequently by D Friedman, InspectApedia's editor, for New York University ca 1988 and later, with others, recommended to ASHI, the American Society of Home Inspectors.

The curriculum and lists of defects are informed by additional analysis of the process of home inspection that was developed beginning Calgary, AB for Canadian and U.S. home inspector education and certification examinations in 1997. Other early contributors to home inspection education in the U.S. and Canada include Dr. Jess Aronstein, Alan Carson, Mike Casey, Mark Cramer, John Cox, Dwight Barnett, Douglas Hansen, Rick Heyl, Larry Hoytt, Bill Merrill, Kevin O'Malley, Dennis Robitalille, Keith Peddie, Pat Porzio, Roger Robinson.

ASHI did not adopt this material though currently that association as well as others offer extensive HOME INSPECTOR EDUCATION material.

 

Continue reading at DEFECTS LIST - AIR CONDITIONING or select a topic from the More Reading links shown below.

Or see DEFECTS LIST - HEAT PUMP

Or see DUCT SYSTEM & DUCT DEFECTS

Suggested citation for this web page

DEFECTS LIST - HEAT PUMP SUBSYS at InspectApedia.com - online encyclopedia of building & environmental inspection, testing, diagnosis, repair, & problem prevention advice.

More Reading

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