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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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YELLOW JACKET RECOVERY(vacuum) PUMP #93460

$299.00
DRY-AIRE 3 PHASE COMMERCIAL DUCT DEHUMIDIFIER DRY-40

$299.99
Goodman Gas Furnace, 4.0 Ton, 70K BTU, 80% GMH80704BNA

$539.00
CPS LS3000 Refrigerent Leak Detector

$86.00
2-Stage Rotary Deep Vacuum Pump Heavy Duty 3CFM AC/HVAC

$169.95
New Watts True Union Ball Valve TPBV PVC 2" New IB

$9.99
GREENHECK W/ FAN -3PH-48IN ROOF VENT- WILL SHIP TAMPA

$99.99
Remco AC Gauge Manifold With Hoses Great Condition

$29.09
Hastings Vacuum Guage VT-5 Thermocouple Guage GTC-OC4

$14.99
GREENHECK FAN -36 IN ROOF VENT- WILL SHIP -IN TAMPA #2

$99.99
Modine Gas Heater Model: PAE200A60130

$200.00
Allen Bradley SLC 150 Programmable Controller

$9.95
ELECTRIC WATER PUMP 460 VOLTS, 6 UNITS

$1000.00
CARRIER HVAC HEATER IGNITER CONTROL BOX

$16.95
CARRIER 7.5 TON HEAT PUMP AIR CONDITIONER CONDITIONING

$2999.99
HVAC FIN COMBS

$18.51
Vacuum Pump 2 CFM CPS Products Brand New in Box # VP2D

$167.00
NEW! Johnson Controls G67BG-4 IGNITION CONTROL

$29.99
Fieldpiece ACH4 AC Current Clamp Accesory Head **New**

$4.99
AMERICAN 2090 THERMAFLO

$150.00
TACO ZONE VALVE 3/4" SWEAT 571-2 LOT OF 12 NIB 1/2PRICE

$399.99
BOILER TUBE EXPANDER - WIEDEKE -#332A

$48.00
Air System International Ventilation Blower SVB-G8

$289.99
Appion G5 Twin Refrigerant Recovery Unit

$301.00
NEW! Still In Box 10 Pressure & Thermal Limit Switches

$89.99
BDP 8.5 TON PACKAGE UNIT AIR CONDITIONER CONDITIONING

$3199.99
GREENHECK FAN -36 IN ROOF VENT- WILL SHIP -IN TAMPA

$99.99
Honeywell Trol-A-Temp Freeze Protection Control FPC

$15.00
Morlin Model 5400 Electric Pittsburgh Lock Hammer - USA

$599.00
BAC F2-442-M, 125 Ton Closed Cooling Tower, 20 HP Fan

$8500.00
Honeywell S8910U Ignition Module (New)

$25.00
CARRIER CARMP6024ACAAAA EVAPORATOR COIL 5 TON

$299.99
NORTEC STEAM HUMIDIFIER

$118.76
Honeywell L6006A 1145 Aquastat Controller

$49.00
theromoter wells

$7.50
Blower Motor

$15.00
NEW! TRANE 2 STAGE GAS VALVE VAL08027

$49.99
LARKIN FCB12 12 TON AIR COOLED CONDENSER A/C HEATCRAFT

$499.99
MANDREL - PARTIAL SET - B & W - 16EA

$45.00
NEW - Honeywell RA832A 1066 Switching Relay

$49.99
Alnor Velometer Series 6000 Air Velocity Meter w/CASE

$89.99
Morlin Mdls 5200 & 5300 Air Pittsburgh Lock Hammer -USA

$339.00
New Halogen Refrigerant Freon Leak Detector HVAC/R Tool

$69.95
APC FM BLOWER ASSEMBLY 35-50 KW W0M-74736

$99.99
Microprocessor controlled Leak Detector

$150.00
RITCHIE YELLOW JACKET 60440 SWAGE & FLARE TUBING KIT

$55.55
CARRIER 5 TON PACKAGE UNIT AIR CONDITIONER CONDITIONING

$2299.99
Rotobrush aiR+ System Platinum Package-Only Used Twice

$7000.00
NEW COPELAND M2FH-0017-SAA-106 REFRIGERATION CONDENSOR

$100.00
Piab Numatic Cleanroom Vacuum

$100.00
THERMOSTAT Automatic & Adjustable PT6

$16.00
-NEW- PORTABLE GAS LEAK DETECTOR PROPANE, BUTANE ETC.

$24.99
FLOURIMIZER 6000 REFRIGERANT RECOVERY UNIT.

$325.00
WHITE-RODGERS POWER SUPPLY - ELECTRONIC AIR CLEANER

$25.00
Air conditioner service system flush canister w/2 adptr

$21.99
Pressure Switches

$25.00
IMPERIAL RMS 200A EASTMAN REFRIGERANT MANAGEMENT SYSTEM

$500.00
NIB OEM GE (For Carrier) HC 52AE 465 Cond Fan Motor

$99.99
New in Box HONEYWELL PRESSURE SWCH CF 146-31-312

$49.99
FENWAL HVAC IGNITER CONTROL UNIT 9316H PLUS

$24.95
Yellow Jacket 41215 Manifold Gauges W/Hoses HVAC NEW

$56.00
ELECTRIC WATER PUMP 230 VOLTS.

$150.00
NEW! EF33CZ201 2 STAGE COMBINATION GAS VALVE

$89.99
Honeywell L6006A 1145 Aquastat Controller

$49.00
Modine Gas Heater Model PA105AF

$75.00
FAST VAC DV-85C DEEP VACUUM PUMP

$150.00
Small IRC Electric Linear Valve Actuator

$14.00
Honeywell L6006A 1145 Aquastat Controller

$49.00
NEW Mountain 1.5 CFM Vacuum Pump

$139.99
FIRST CO BRAND AQUA-THERM AIR HVAC HANDLER NEW

$400.00
NEW! TRANE FAN CONTROL CNT01537

$49.99
New USA 30lb Refrigerant R134a R-134a R134-FREE FREIGHT

$125.00
RRTi Refrigerant Recovery Unit RRU30

$122.50
NEW Chromalox Electric Radiant Heater 1800W 240/480VAC

$89.00
Honeywell Trol-A-Temp Freeze Protection Control FPC

$15.00
Morlin Model 1800 Drive Cleat Shear

$299.00
EPA Refrigerant Exam Section 608 Freon HVAC Guaranteed

$4.99
CARRIER 5 TON GAS PACK ROOF MOUNT MODEL 48TFE006---611-

$1200.00
Afriso oil flow control & de-aerator 3/K-1 P131-25

$50.00
DAY & NIGHT HVAC RCA TYPE TUBE & PORCELIN BASE RARE

$9.95
NEW! BELL & GOSSETT REDUCING VALVE B-38 P/N 110190

$24.95
NEW Yellow Jacket SUPEREVAC LCD Vacuum Gauge 69075 NIB

$162.50
LAU-CONAIRE Universal Replacement Propeller 22" NIB

$14.87
NEW! WHITE RODGERS Manifold Gas Valve-36E54-201

$49.99
NEW! Bell & Gossett Bearing Assembly

$49.99
NEW! Honeywell Replacement Powerhead Part #40003916-048

$29.99
Morlin Model 2400 Portable Pittsburgh Machine USA Made

$1895.00
Lot of 5 Low Pressure Switches 33333 O - 15 R - 35

$21.50
2 Stage Rotary Vane Deep Vacuum Pump 29.92"Hg 2CFM HVAC

$119.95
New 114AF Vacuum Pressure Heating Cooling Switch 176P

$0.99
Asco Red Hat II Valve 8030G83 2 Way 110 Volt 3/4

$39.95
Lennox 48K98 48K9801 65K29 45K48 78J61 Blower Board NIB

$79.95
Sunkiss Binks Portable Infrared Radiant Gas Heater

$200.00
HEATING SYSTEMS Burners Boilers * Fuels Gas Coal Oil CD

$0.01
NEW Trane & American Standard Blower Inducer BLW00864

$49.99
R410A Manifold Gauge Set w/5ft High Pressure Hoses HVAC

$79.95
Morlin Model 1300 Handy Flanger - Made In The USA

$419.00