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Industrial Equipment, MRO

HVAC

HVAC Article

HVAC (pronounced either "H-V-A-C" or, occasionally, "aitch-vak") is an initialism/acronym that stands for "heating, ventilation, and air conditioning". HVAC is sometimes referred to as "climate control" and is particularly important in the design of medium to large industrial and office buildings such as sky scrapers and in marine environments such as aquariums, where humidity and temperature must all be closely regulated whilst maintaining safe and healthy conditions within. In certain regions (e.g., UK) the term "Building Services" is also used, but may also include plumbing and electrical systems. Refrigeration is sometimes added to the field's abbreviation as HVAC&R or HVACR, or ventilation is dropped as HACR (such as the designation of HACR-rated circuit breakers).

Heating, ventilation, and air conditioning is based on the basic principles of thermodynamics, fluid mechanics, and heat transfer, and to inventions and discoveries made by Michael Faraday, Willis Carrier, Reuben Trane, James Joule, William Rankine, Sadi Carnot, and many others. The invention of the components of HVAC systems goes hand-in-hand with the industrial revolution, and new methods of modernization, higher efficiency, and system control are constantly introduced by companies and inventors all over the world.

The three functions of heating, ventilation, and air-conditioning are closely interrelated. All seek to provide thermal comfort, acceptable indoor air quality, and reasonable installation, operation, and maintenance costs. HVAC systems can provide ventilation, reduce air infiltration, and maintain pressure relationships between spaces. How air is delivered to, and removed from spaces is known as room air distribution.

HVAC Items

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BC Electrolytic 16000uF 50V Capacitor 3188BD163U050APA2
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FUNCTIONAL DEVICES RIBU1C RELAY IN A BOX LOT OF 13
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New Friedrich RT5 Digital Thermostat Wall Mount
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Emerson 8905 Motor Indoor Blower
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McDonnell & Miller PA-800-U Probe Long Barrel
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New Book HVAC Field Guide to Medium & High Gas Furnaces
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8 X 14 ACTIVATED CARBON FILTER ODOR SCRUBBER 240 CFM
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Articco H360 Set of 3 Standard 60" Refrigeration Hoses
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NEW 465 Dayton Blower Fan 115V 4C448A L@@K
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BROAN Replacement Motor For Use With 4C568
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Trane CNT03728
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Modus Instruments T10-010X Pressure Tranmitter 0-0.1"
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8 HEATING VENTILATION AIR CON HVAC TRAINING COURSES CD
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Thermostat Honeywell T708081019 -Dual Setpoint-- NEW
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TACO 003-B4 CARTRIDGE CIRCULATOR PUMP NEW
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New Forane Brand R-12 R12 Refrigerant 30lb Sealed
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New Rosneberg, Paul Dewalt HVAC Professional Reference
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Brand New Brumbaugh, James E. Audel HVAC Fundamentals
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1 pcs Brushless DC Cooling Blower Fan 7525S 12V 0.14A
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Supco Compressor Lead Set CL18-3 Lot of 5
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HVAC service tool kit - HVAC tools - complete set
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FJC 6909 3.0 CFM Twin Port Vacuum Pump - Brand New
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Appion G1 Single Refrigerant Recovery Machine
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Articco TC58 Mini Cutter & TC118 Large Cutter Set of 2
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Suntec A1VA 7112 fuel oil pump
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MIDWEST P6510L P6510R P6510S Offset Aviation Tin Snips
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Ivy Tool Xcelite Screw Nut Driver Set 5120-00-440-8008
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Waste Water Digester Sludge Heater
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TIF XP-1A Refrigerant Leak Detector HVAC / AC SWEET!!!
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Halogen Refrigerant Freon Leak Detector HVAC R22 R134A+
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Type K Thermocouple Temperature Sensor HVAC Fit Fluke+
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New Chrysler Pacifica Evaporator With Expansion Valve
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NEW! Buffalo 42-Inch Industrial Fan-LOW SHIPPING!!
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Honeywell Skinner Valve V52DB2100
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New COLEMAN 500' Roll, Jacketed 18/3 Wire 55303 SAVE!
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Robinair Process Tube Adapter Kit Part 12458 NR
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RIELLO BURNERS MOTOR PART # 3005845 NEW
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Airserco Hermetic Valve Unit kit
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New Clip Light Manufacturing Spark-KeyTM Torch Igniter
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Car AC R134a Can Tapper Connector Charger Punch w/Valve
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honey well 322 zone panel
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Halogen Refrigerant Freon Leak Detector HVAC/R R22 R134
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Honeywell T87F 2873 low voltage , heating-cooling,NEW
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Halogen Refrigerant Freon Leak Detector HVAC/R R22 R134
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RR Ti Refrigerant Recovery Unit Model RRU30
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10 Sheets-Disney Mickey Mouse Stickers Free Shipping!
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Oil Burner Primary Control, 110V, Cat.No.5520-D21
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Brand New Brumbaugh, James E. HVAC Fundamentals
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Carrier HK06NB123 Pressure Switch HVAC NEW
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1 pcs Brushless DC Cooling Blower Fan 9733S 12V 0.5A
$4.55
MALCO S9 9" INCH HAND SEAMER SIDING BENDING BRAKE TOOL
$37.25
Motor Speed Control KBMS-13K 3A 120V Solid State
$8.00
Brand New Amprobe Digital Multimeter For HVAC & More
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Water Leak Locator Sewer camera Detector Tracer Dye NEW
$30.00
Brand New Fluke Multimeter Combo Kit for HVAC & Elec.
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Halogen Refrigerant Freon Leak Detector HVAC R22 R134A
$17.50
New Honeywell LP915A1044 Return Air Sensor
$49.00
R 22 Fixed Orifice TXV TEV Cooling Calculator Tool N
$8.45
SUTORBILT BLOWER
$1200.00
Good used Robinair Charging Valve NR
$20.00
2 Stage Vane Deep Vacuum Pump Heavy Duty 5.5CFM AC HVAC
$187.77
HONEYWELL SMART VALVE - NIB #125
$99.95
NEW DigiTrace E507S-LS (TSTAT) Line-Sensing Thermostat
$29.95
NEW!! FlowPro Industrial Pedestal Fan-30"
$238.95
8 X 14 ACTIVATED CARBON FILTER ODOR SCRUBBER 240 CFM
$149.95
NEW CYLINDER REFRIGERANT R-404A HVAC 24 LBS.
$189.99
5-Honeywell T87F 2873 Heating-Cooling Thermstat (New)
$20.50
Brand New American Society of Heating, Ref Ashrae Green
$88.98
1 pcs Brushless DC Cooling Blower Fan 5015S 12V 0.14A
$3.35
Lennox 97H53 Room Air Sensor 97H5301 Novar System
$24.95
Amcraft 7002 Duct Board Transition Angle
$55.95
Goyen Solenoid Valve
$9.95
Honeywell DP2040A 5003 definite purpose contactor, 24V,
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New Silberstein, Eugene Residential Construction HVAC
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155,000 BTU Infrared Overhead Warehouse Heater SAVE $$$
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COOPER! 4005-PIPE CLAMP PROBE! NEW!
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TRIDELTA 2-wire1-Hose Furnace Pressure Switch FS4066-89
$40.00
(2643-FC) COPELAND Compressor, EAL-1-0200TAC
$399.00
McDonnell & Miller FS4-3D Flow Switch 1 NPT
$65.95
pulsafeeder pulsatrol 9000 MB9210 boiler control NEW
$95.00
SCH 80 PVC UNION 1 1/2 SLIP TYPE
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Commercial Thermostat/subbase Honeywell, Programmable
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Seal Remover and Installer Set for all GM AC Cars
$5.00
Brand New Electronic Specialties Low Current Probe
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Henry Globe Refrigerant Valve 2032 Hetec 1-5/8 Sweat
$236.27
ROBINAIR REFRIGERANT RECOVERY UNIT
$295.51
10Service Valve Core Replace All Refrigerants HVAC Part
$3.99
Halogen Refrigerant Freon Leak Detector HVAC R22 R134A
$17.95
R134a REFRIGERANT RECYCLE KIT w/2-70" Hoses/Sight Glass
$79.95
R-22 and R-410A Air Conditioning System Repair Guide
$31.99
New Ding, Adam Dewalt HVAC Estimating Professional Ref.
$24.98
Good used Robinair Charging Valve NR
$20.00
Ceramic Radiant Infrared Overhead Warehouse Heater
$577.00
SAFE-T-SWITCH # SS3 AC UNIT BEFORE PAN OVERFLOWS
$3.65
Malco FCMS 8" Exposure Facing Gauge Overlap Set USA NEW
$25.89
Brand New HVAC Book Blueprints & Plans for HVAC
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New Electronic Specialties Mag Lead w/ Alligator Clip
$37.98
New Book Gladstone, John Ductwork Estimating for HVAC
$18.98
UNIVERSAL R-410A R410A 410A SAFETY & TRAINING MANUAL
$25.99
   


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