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AIR CONDITIONING & HEAT PUMP SYSTEMS AIR CONDITIONER COMPONENT PARTS CONTROLS & SWITCHES A/C DIAGNOSTIC FAQs A/C TYPES, ENERGY SOURCES A/C REFRIGERANTS AIR CONDITIONER BTU CHART SEER RATINGS & OTHER DEFINITIONS OPERATING COST SYSTEM OPERATION OPERATING TEMPERATURES Air Conditioning System Temperatures Instruments Used to Measure A/C Temperatures Procedures for Making Temperature Measurements OPERATING DEFECTS LOST COOLING CAPACITY COMPRESSOR & CONDENSING COIL AIR HANDLER UNITS AIR FILTERS for HVAC SYSTEMS CONDENSATE HANDLING CLEANING & Legionella BACTERIA DUCT SYSTEM DEFECTS ENERGY SAVINGS in BUILDINGS FAN AUTO ON CONTROLS AIR CONDITIONER INSPECTION LIMITATIONS CRITICAL DEFECTS FURNACES WARM AIR HEATING SYSTEMS INDOOR AIR QUALITY & HOUSE TIGHTNESS INDOOR AIR QUALITY IMPROVEMENT GUIDE MOLD INFORMATION CENTER More Information InspectAPedia Blog - News Updates Air Conditioning & Heat Pumps Bookstore Electrical Environment Exteriors Heating Home Inspection Insulate Ventilate Interiors Mold Inspect/Test Plumbing Water Septic Roofing Structure Accuracy & Privacy Policies Contact Us |
This chapter discusses how to measure input and output air temperatures at air conditioning equipment in order to determine whether or not it is operating properly, as part of checking basic air conditioning system operation and for detection of air conditioning operating defects. Air conditioner temperatures that are too high or too low can indicate specific operating problems on central and portable or window air conditioners. Simple measurements of air temperatures, if made at the right place, can assist in diagnosing what may be wrong and what repairs may be needed for the air conditioner. This document is a portion of our website which describes the inspection of residential air conditioning systems (A/C systems) to inform home buyers, owners, and home inspectors of common cooling system defects. If your air conditioning system has lost its cooling capacity or wont' start see REPAIR GUIDE for AIR CONDITIONERS and see How to determine the cooling capacity and see How to determine the cooling capacity of air conditioning equipment if the system seems to be working but is inadequate to cool your building. Contact us to suggest text changes and additions and, if you wish, to receive online listing and credit for that contribution. © Copyright 2010 Daniel Friedman, All Rights Reserved. Information Accuracy & Bias Pledge is at below-left. Use links at the left of each page to navigate this document or to view other topics at this website. Green links show where you are in our document or website. List of Types of Instruments Used to Measure Air Conditioning TemperaturesDial thermometers such as the dial face shown in the photograph at the top of this page are inexpensive (typically less than $10.00) and very simple instruments which combine a bimetallic spring, a dial face, and a stainless steel probe which can be inserted into A/C systems at key points (below) or in some cases simply held in an air stream. The thermometer can take a couple of minutes to stabilize, so you should keep it in position until the dial indicator stops changing. Dial thermometers vary in accuracy but can easily be calibrated (using boiling water). Don't choose a dial thermometer whose temperature range is much greater (say 0 degF. to 212 degF.) than the range that you need (say 30 degF. to 100 degF.) since the smaller range thermometer will be more accurate in determining the temperature. Digital thermometers work much like a dial thermometer but include a digital display of temperature (and require a battery). Digital thermometers cost a bit more, typically around $25. to $130. Air flow thermometers are electronic devices similar to a the temperature probes above, but their probe ends in a loop through which air passes to provide a more rapid readout of air temperature. However these devices are not easily inserted into duct work as a larger probe opening will be required. Infrared temperature measurement devices have the feature of being able to measure surface temperatures from a distance but are not used to make direct measurements of air temperatures ... Technical Reviewers & References
Use links just below or at the left of each page to navigate this document or to view other topics at this website. Green links show where you are in our document or website. AIR CONDITIONING & HEAT PUMP SYSTEMS Books & Articles on Building & Environmental Inspection, Testing, Diagnosis, & Repair
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