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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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056 - 5 MCLEAN 1RB100-115 115V FILTER BOX FANS

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2-Stage Rotary Deep Vacuum Pump Heavy Duty 3CFM AC/HVAC

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MONARCH .75 GPM 70 DEG. TYPE NS OIL NOZZLE

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3450 rpm 115 volt oem Inducer blower motor

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Dunham Bush Outdoor M# WC8A Water Cooled 8 Ton Chiller

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New Suction Accumulator

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STEINEN 1.35 GPM 45 DEG. TYPE Q OIL NOZZLE

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ASCO 826G212 VALVE , NIB

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lot of 3 unit waterman 12V pn 704028 17W new hydraulic

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Sporlan Catch All C-303 Filter Drier

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Halogen Gas Refrigerant CFC HFC Leak Detector V2T

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JOHNSON CONTROLS M150XGA-1 MOTOR ACTUATOR 150 LBS-IN

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Dayton PSC Blower (4C446)

$20.00
Honeywell Ultraviolet Amplifier R7849 A 1023 NIB!!!

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TIF9622B Replacement Gauge NEW!

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ebm fans part #230-000032-001 new out of box lot of 11

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**NEW!!! Sealed unopened CPS LeK Seeker L-790a

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EMERSON DUAL SHAFT WINDOW/WALL MOUNT AC BLOWER MOTOR!

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TIF 5500 Freon Leak Detector

$38.00
NIB 4 inch 152 cfm ELICENT INLINE FAN W/POWER CORD!

$135.00
NIB 6 inch 309 cfm ELICENT INLINE FAN W/POWER CORD.

$160.00
Carrier 4 Ton Heat Pump Rooftop Package 460V 3 PH - NEW

$1095.00
MASTERCOOL Infrared Thermometer, Case + FREE anal therm

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MONARCH 1.20 GPM 80 DEG. TYPE NS OIL NOZZLE

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New sealed DuPont R-22 R22 freon 30 lb. can for HVAC

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New Chester Jensen Chiller

$6500.00
ASCO 8210G95 VALVE , NEW

$21.00
Blazer Computemp Unit - 5 Ton, M-50AC, 460V, Heavy Duty

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IMPERIAL NO. 275-FS FLARING AND SWAGGING TOOL KIT

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Marini Transformer Padova Italy - 100VA VDE 0550 230V

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DELOREAN. DMC-12.R-12 OIL CHARGE FOR A/C.DMC-12

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New Halogen Refrigerant Freon Leak Detector HVAC/R Tool

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ASCO X8314A49V VALVE , NEW

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TIF RX-1A Leak Detector

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HONEYWELL 673731-001 3-WAY VALVE W/ ACTUATOR

$129.00
Little Giant Automatic Condensate Removal Pump New

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BOSTON 1.25 GPM 30 DEG. TYPE H OIL NOZZLE

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REFRIGERATION & AIR CONDITIONING TRAINING MANUAL

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Kewanee 200 HP Steam Boiler

$15500.00
BOSTON 1.35 GPM 30 DEG. TYPE H OIL NOZZLE

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ASCO [ Solenoid 2,3&4 Way Valves ] Red-Hat *NIB

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TIF9632R Replacement Gauge NEW!

$11.50
Liebert 21 Ton Water Cooled Chiller Rack Unit M#-CH-21G

$2495.00
Mini Tube Tubing Cutter Plumbing HVAC Tool 1/8-5/8" OD

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CPS PRO-SET TWO VALVE MANIFOLD GAUGE SET R-134A

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NK Technologies AC Current Sensor 5 10 15 20 50A 5VDC

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ODORSOK 450 CFM Carbon Filter. Light and easy to use.

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15000 Btu Package Terminal Air Conditioner w 5kW Heater

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SERCON 4000 ACID PURIFICATION MACHINE LOW HOURS LOOK NR

$395.00
Manifold Gauge 5'High Pressure Hose HVAC R134/R22/R404

$75.75
Yokogawa H10X PRO/MARS TOP GUN 2 REFRIG. LEAK DETECTOR

$61.00
NEW ZIEHL-ABEGG ELECTRIC MOTOR MD# MK137-4DK.15.N

$0.95
ODORSOK 190 CFM Carbon Filter. Light and easy to use.

$45.00
TRIPLE MANIFOLD

$150.00
NEW RITCHIE MANIFOLD GUAGES 410, 404, 22

$61.00
NIB 8 inch 635 cfm ELICENT INLINE FAN w/POWER CORD

$200.00
NK Technologies DC Current Transd 50 75 100 Amps 4-20ma

$24.99
Hoffman Design Aire Package Indoor A/C *NEW* 12,000 BTU

$1250.00
New USA 30lb Refrigerant R134a R-134a R134-FREE FREIGHT

$125.00
L&L Special Furnace Q-827-400

$2699.99
CLEAVER BROOKS CB 70 BURNER CONTROL ,NIB

$405.00
Gas Test Gauge 30 PSI Pressure Max. 3/4" FPT

$8.50
Mueller Cyclemaster Standard Ball Valve A 17865 -1 1/8"

$5.50
TIF RX-1A leak detector

$59.99
SERCON 5000 RECOVERY SYSTEM

$99.95
410-a puron hvac air conditioning 30lb full sealed nib

$137.50
COOLING PACKAGED UNIT , 4 Tons BY DAYTON

$995.95
Best Exhaust Fan (EB15)

$100.00
r-22 refrigerant hvac air conditioning 30lb full sealed

$122.50
Large 2 oz Compressor Oil/Dye Screw-in Injector AC/HVAC

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EXHUST FAN,48 In,BELT DRIVE , LESS DRIVE PACKAGE .

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Mueller Cyclemaster Standard Ball Valve A 17865 -1 1/8"

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JB industries M3 series Manifold 1/4" full flow NEW

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Gas Test Gauge 30 PSI Pressure Max. 1" FPT

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Pexto No. 63 F Sheet Metal Bar Folder 30" 22 GA + Stand

$400.00
36" HVAC Refrigeration Refrigerant Charging Hoses

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HONNEYWELL W973A 1017 LOGIC PANEL

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Mobile Air Circulator,48 In,115 Volt BY DAYTON

$399.99
Brand New in the box Carrier Infinity ZONE CONTROL

$162.50
NIB 8 INCH FANTECH FX8XL 521 CFM INLINE FAN W/CORD

$200.00
19 Book CD * HVAC Air Conditioning | HEATING ManualsCD

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GE H10 Halogen gas leak detector Refrigerant Freon HVAC

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404A Refridgerant Sealed HP62

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Dayton - 110,000-BTU Portable Oil-Fired Heater

$129.00
Pexto 0601B Heavy Rotary Crimping Machine + 977-S Base

$195.00
2 Stage Rotary Vane Deep Vacuum Pump 29.92"Hg 2CFM HVAC

$119.95
12000 Btu PTAC Package Terminal Air Conditioner Heating

$658.00
SNAP-ON ACT730 Refrigerant Leak Detector

$102.50
Mountain 3.0 Single Stage Deep Vacuum Pump NEW

$137.99
HONEYWELL 2-POSITION DIRECT COUPLED ACTUATOR NEW

$9.99
WATTS TEMP. & PRESSURE RELIEF VALVE 100XL 3/4" LOT OF 5

$24.95
Pressure Switch - Lot of 2!!

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FJC A/C Scale,Manifold Gauge Set,Thermometer FJCKIT2

$239.70
IMPERIAL REFRIGERANT GUAGES #422 WITH HOSES (W)

$28.51
FASCO BLOWER FAN No. 7021-7577 VOLT 115

$29.99
5 ROLLS OF FACTORY SEALED ALUMINUM TAPE

$18.50
STEINEN 1.00 GPM 45 DEG. TYPE Q OIL NOZZLE

$0.99
LOT OF 50 WATTS TEMP & PRESSURE RELIEF VALVE 100XL3/4"

$229.00
Inficon D-TEK refrigerant Leak Detector

$40.00