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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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Industrial Scientific T40 Rattler Personal Gas Detector

$34.64
Amtrol 30 Expansion Tank

$7.50
Heat Exchanger, Titanium, w/304 Stainless Steel Flangs

$495.00
GE 1075 1/2hp 110v 3 Speed Furnace Blower Motor 3587

$16.05
CARRIER REVERSING VALVE EF17BE181 OLD STOCK NEW IN BOX

$100.00
Carrier Transicold Coil Kit # 50021-02

$11.95
1/4X5/16" Adapter Connector Coupler Ball Valve Set HVAC

$39.95
SHEET METAL/BODY WORK HAND TOOLS ASSORTMENT (USED)

$13.00
TRACERLINE AC & LEAK DETECTOR KIT WITH CASE (W)

$13.26
Danfoss Maneurop Reciprocating Compressor #MTZ28=4VM

$250.00
PIPE CRIMPER C5

$1.04
Ammonia Refrigeration Repair Parts Maintenance York

$275.00
Mountain 1.5 CFM A/C Vacuum Pump MTN8403

$119.95
infrared dynamics sunpak 34000 btu heater gas heater

$20.00
Paxton Product-Centrifugal Blower NT 800M/F, Tatung

$209.72
Universal Radiator Pressure Tester

$220.00
1" HONEYWELL MOTORIZED ZONE VALVE 24V V8043F1051 * NIB

$20.52
Air Conditioner - Water Cooled

$500.00
50 Lb. R-134a A/C Tank

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

$0.99
GE Universal Reversable Condensor Fan Motor

$29.99
7.5 Ton, Self-Contained, Air Conditioning Unit

$895.00
Honeywell Hot Surface Ignition Module S8910U-1000

$29.99
Alerton BACtalk VLC-1188 DDC Controller

$50.00
TurboTorch (Oxy/Acetylene Regulators) & 12-1/2 Ft Hose

$37.00
GE Universal Reversable Condensor Motor 5KCP39PGS618

$29.99
5 NIB J/B REFRIGERATION GAUGE red

$20.00
42" Industrial Fans Qty: 1; Manufacturer: Model: PB-42

$225.00
NEW BUTANE MICRO TORCH WELDING SOLDERING DENTAL BURNER

$1.99
Air Brush/Flush/Cleaning Tool Kit Canister Hose Gun AC

$49.75
H10PM ALL Refrigerant Leak Detector Battery Charger

$2.99
Fieldpiece Stick Meter HS35, ACH4 Clamp, ATH4 Temp head

$84.67
HVAC BULLET PIERCING VALVES LINE TAP LOT OF 5 NIB

$3.25
MILWAUKEE PORTABAN #6230 DEEP CUT BAND SAW w/ BLADES

$225.00
FOUR 30 LB. BOTTLES OF R-12 REFRIGERANT - NO RESERVE

$660.51
22 New Carrier ThinLINE Container Refrigeration Units

$74999.00
Amtrol 15 Expansion Tank

$11.17
Honeywell Burner Control Keyboard S7800 A 1001

$91.00
Industrial Heater

$200.00
New 4" Metal Inline Duct Fan 200 CFM Corded Exhaust Fan

$89.95
Lau Direct Drive Blower Fan Squirrel Cage Assembly HVAC

$19.99
Tennsmith S48 22 GA Sheet Metal Bench Brake with Stand

$525.00
Amtrol 30 Expansion Tank

$5.15
Honeywell Burner Control Network Interface Unit

$39.99
"The Big Chill" Blower

$75.00
Copper Tube Extensions Fit Access Valves 5 pack A31003

$4.99
APC AirFlow 5 ton Data Center AC Water Cooled Upflow

$595.00
Milwaukee Right Angle Drill 1107-1

$109.99
Honeywell T6065A1005 Wide Control Range Thermostat NEW

$10.50
DUAL BLOWER SQUIRREL CAGE FAN WITH MULTY SPEED MOTOR

$50.00
Amtrol 15 Expansion Tank

$11.67
Gordon Piatt F16 Burner Gas Oil,boiler,steam,hot water

$5950.00
WERNER 8 FT. ALUMIUM LADDER ~ LQQK ~

$100.00
Blue Point ACT 725 HVAC Leak Detector D'tector in Case

$89.00
Cleaver Brooks Steam 200 HP Boiler

$18500.00
Watsco model WCG-5 refrigerant recovery unit

$250.00
6 - ICM HARDSTARTS

$39.00
R134A Brass Manifold Gauge Set with Couplers

$50.00
ITT No. 150 SHD Low Water Cut-Off/Pump Controller NIB

$173.63
Honeywell Burner Control Controlbus Mod QS7850 A 1006

$29.99
Scot 96 FramePump water pump WEG EX5990 Centrifugal

$995.00
Honeywell Burner Control RM7838B1013 S7800A R7847 C1005

$149.99
ALCO Extra Klean EK-083 Refrigerant Filter Dryer *NEW

$7.99
REFRIGERANT RECOVERY SYSTEMS INC. MODEL ST-100, HVAC

$400.00
NIAGARA COMBINATION ROTARY MACHINE 18 GA PEXTO TYPE

$499.00
hft40 line voltage flame proof thermostat switch heatex

$75.00
Air-Vac A/C Vacuum Pump Evacuation R-134A R22 R12 NEW

$19.99
A.O. SMITH SOURCE 1 1/2 HP MOTOR F48L16A50 02426053000

$49.99
VAV-110-1 Johnson Controls VAV Controller Metasys

$49.99
BRAND NEW IN CASE TAP & DIE SET - NEVER USED!!!

$125.00
DX-9100 Johnson Controls PADA00001AH0 Metasys

$525.00
HVAC USED YELLOW JACKET A/C VACUUM PUMP

$175.00
Sussman Electric Boiler SSB80

$6000.00
2 oz Compressor Oil/Flurescent Dye Injector HVAC/R Tool

$45.75
Honeywell MS7510A2008 Spring Return Actuator

$0.99
Honeywell Burner Control Controlbus Mod QS7800 A 1001

$29.99
Alco Refrigerant Solenoid Valve 240RA9T7T NIB

$29.99
Taco Zone Valve Power Head 555-050 RP

$25.01
SPIRAX SARCO REMOTE ONE WAY TERMINAL NIB

$14.00
Trane PCM Board

$420.00
IMPERIAL FREON TESTOR #423-CR #425-CB R-22 R-12 R-502

$26.55
200 CFM 115 VAC MUFFIN FAN

$5.00
KMC CSP-5002 ELECTRIC ANOLOG CONTROLLER ACTUATOR NEW!

$125.00
LEAK DETECTION DYE 8 0Z 100%

$20.00
Amtrol 15 Expansion Tank

$10.50
Lot of 9 Honeywell R8222D1014 DPDT Relays New

$57.00
A.O. SMITH SOURCE 1 1/2 HP MOTOR F48L17A50 02426044000

$49.99
SPIRAX SARCO REMOTE ONE WAY TERMINAL NIB

$14.00
HOFFMAN ITT INVERTED 3/4 IN. BUCKET STEAM TRAP B1125S-3

$11.50
UNI FILTER MODEL #99 FUEL OIL FILTER

$1.99
TECUMSEH COMPRESSOR Model:AJA7441AXD 1/2 HP

$175.00
Webster JB3G-75 Nat gas burner 4 boiler steam hot water

$4250.00
Lot of 2 Honeywell T8011R 1006 Programmable Thermostats

$21.75
Gordon Piatt F18 -1-G-200 Burner for boiler steam hot

$3900.00
Amtrol 30 Expansion Tank

$7.00
Amtrol 15 Expansion Tank

$10.50
ITT Standard U Tube Heat Exchanger 27" long x 4" dia.

$499.00
HVAC Air Conditioning Heating Ventilation 19Manuals CD

$0.01
Alerton BACtalk VAV-SD Single Duct VAV Control NEW

$31.00
2 HP Cincinnati fan

$10.00