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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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Halogen Refrigerant Freon Leak Detector AC/HVAC/R Tool

$69.95
GARRISON 3 TON 13 SEER GAS SPLIT SYSTEM/FREE SHIPPING

$1990.00
RotoBrush Duct Cleaning package Roto Brush Janitorial

$4001.00
Honeywell R8184M Protectorelay Oil Burner Control

$19.99
1/3 hp cradle base condensor fan motor

$20.00
Fieldpiece ADK7 Deluxe Leads + Alligator Clips **New**

$12.50
2 Honeywell Trane Commercial Programmable Thermostats

$9.95
Manifold Gauge 5'High Pressure Hose R407 R134A R404 R22

$30.00
Type K Thermocouple Temperature Sensor HVAC Fit Amprobe

$2.95
Heating Coil Integral face , L J Wing , B-36

$450.00
Invensys MP-5210-0-0-3 Hydraulic Valve Actuator (120 V)

$100.00
GARRISON 5 TON 13 SEER GAS SPLIT SYSTEM/FREE SHIPPING

$2565.00
Fieldpiece EHDL1 Electronic Handle for Accessory Head

$15.45
Fireye Programmer Module EP170

$199.99
R-410A Refrigerant Gauges W/ Hoses & Manifold

$60.00
YELLOW JACKET A/C REFRIGERANT CHARGING GAUGE HOSES

$31.00
CARLIN ELECTRONIC IGNITOR 41000SOCAS FOR CARLIN BURNERS

$9.99
Taco Circulator 007 -F5

$25.00
CARRIER COMMERCIAL THERMOSTAT 33CS420-01(DIGITAL)

$44.99
JB INDUSTRIES VACUUM PUMP 5CFM 2 STAGE DV-142N HVAC

$142.55
SIEMENS OPENAIR ACTUATOR GLB131.1P PLENUM CABLE NEW

$69.95
Kozy-World Thermostat Controlled Blower #206028

$9.99
White Rodger programmable thermostat $75 value

$10.00
GARRISON 4 TON 13 SEER HEAT PUMP SPLIT SYSTEM

$2425.00
GARRISON 3.5 TON 13 SEER GAS SPLIT SYSTEM/FREE SHIPPING

$2150.00
GARRISON 1.5 TON 13 SEER HEAT PUMP SPLIT SYSTEM

$1725.00
Varian 990-CLD AutoLine Leak Detector

$200.00
NEW Grasslin DTMV40 Defrost Timer

$39.99
GARRISON 3 TON 13 SEER HEAT PUMP SPLIT SYSTEM

$2075.00
Sheet Metal Fabrication Handbook Shop Practices on:CD *

$0.99
Universal Motor 115 VAC, 1550 RPM 1.1 Amp. (8)

$50.00
Halogen Refrigerant Leak Detector HVAC/R Tool New Model

$99.75
GARRISON 5 TON 13 SEER HEAT PUMP SPLIT SYSTEM

$2750.00
White Rodgers 7 day programmable thermostat

$10.00
HVAC Air Conditioning * Heating Ventilation 19 books CD

$0.01
3 FUEL OIL BURNER NOZZLES MONARCH DELAVAN PLASTIC TUBE

$0.99
hvac filter

$10.00
Honeywell Super Tradeline R4243 B 1038 Contactor

$10.00
FREEON RECOVERY TANK WITH R12

$25.00
Boiler Furnace Heat Oil Gas Coal HVAC 19book CD Library

$0.01
Mastercool R134a

$40.00
NEW C&D Core Removal Tool CRT CD3900

$27.98
BROAN NUTONE 60 MIN TIMER IN THE WALL TIMER SWITCH

$15.00
R-502 Freon, 30 lb. Cylinder

$177.00
Mini Tube Tubing Cutter Plumbing HVAC Tool 1/8-5/8" OD

$7.95
Thermo Anemometer Vane Wind Speed Air Flow Meter NEW !!

$99.95
HONEYWELL R8182D 1079 Combination Protectorelay

$19.99
MP-39 MP 39 NEW Virgin Not Reclaimed R401a R-401a 401a

$129.99
A/C REFRIGERANT CHARGING GAUGE HOSES- VALVE WHIP ENDS

$38.01
GARRISON 3.5 TON 13 SEER HEAT PUMP SPLIT SYSTEM

$2145.00
Vaneaxial fan Twin City 28B5 , 7.5 hp unused

$1950.00
HVAC-R Heating Air Conditioning Heat Pump 90+ switch

$5.95
Dayton Industrial Gas Heater Ceiling Unit 100,000 BTU

$20.00
1 side mount atr make up system 900,000 BTU NATURAL GAS

$799.99
Halogen Refrigerant Leak Detector Air Pump AC/HVAC Tool

$51.00
"FREON" R22 Refrigerant

$130.00
TIF Volume-Aire Air Balancer

$15.50
Leak Detector Water Pipe locator air gas electronic

$120.00
NEW VG64 Digital Vacuum Gauge NIB

$107.50
NEW DAYTON BLOWER 7 3/4" BLOWER

$49.99
Halogen Gas Refrigerant CFC HFC Leak Detector V2T

$36.99
Varian 990-CLD AutoLine Leak Detector

$200.00
FREEON RECOVERY TANK WITH R134

$25.00
Appion G5 Twin Refrigerant Recovery Unit

$482.00
A/C MANIFOLD GAUGE SET A C R134a W/ CARRYING CASE

$21.39
New Taco Replacement POWER HEAD 555-050RP

$17.00
Johnson Control Model V46ND-2C Water Regulating Valve

$35.00
ARGO AR822 822 RELAY

$10.49
GARRISON 2 TON 13 SEER GAS SPLIT SYSTEM/FREE SHIPPING

$1750.00
GARRISON 2.5 TON 13 SEER GAS SPLIT SYSTEM/FREE SHIPPING

$1875.00
Thermal Thermistor Vacuum Gauge Model #4501

$42.75
SEALED IN BOX GENETRON MP 66 R-401B REFRIGERANT 30 LBS.

$75.00
EXHAUST FAN Commercial - Direct Drive - 16" - 1/4 Hp

$336.00
tempstar heatpump board

$30.00
GARRISON 2.5 TON 13 SEER HEAT PUMP SPLIT SYSTEM

$1925.00
60" HVAC Refrigeration Charging Hoses Low Loss Set RYB

$32.95
New Zefon Basic Mold Testing Kit

$350.00
goodman defrost board

$10.00
* Dayton 140 CFM Shaded Pole Blower 4C442 / 8C242 NEW *

$49.99
CHECK-IT 0613 DigitaL SuperHeat Pyrometer Set

$70.00
12" Can Fan INLINE DUCT EXHAUST FAN BLOWER HYDROPONICS

$320.00
19 Book CD * HVAC Air Conditioning | HEATING Manuals CD

$0.99
GOODMAN 4 TON HEAT PUMP PACKAGE UNIT /FREE SHIPPING

$2700.00
ignition control board

$25.00
GARRISON 1.5 TON 13 SEER GAS SPLIT SYSTEM/FREE SHIPPING

$1695.00
BENZ O MATIC LEAK DETECTOR

$9.99
Carrier Transicold Coil Kit # 50021-02

$0.99
GARRISON 4 TON 13 SEER GAS SPLIT SYSTEM/FREE SHIPPING

$2275.00
GEN-EAR PROFESSIONAL WATER LEAK DETECTOR

$1200.00
Tecumseh Commercial Temp Compressor AKA9438ZXA

$76.00
HONEYWELL MICROCOMPUTER BURNER MANAGEMENT SYSTEM

$199.95
LENNOX HEAT PUMP KIT FOR INDOOR COILS

$29.99
CARLIN ELECTRONIC IGNITOR 41000SOBK1 FOR BECKET BURNERS

$9.99
CRAFTSMAN AVIATION SNIP

$1.99
Mastercool Electronic Leak Detector Kit Tool MST 55100

$52.00
WHOLE HOUSE FAN - 30" - 1/2 Hp - 115V - 6,900 CFM

$511.00
COPPER TUBING 3/8" 180 W/SOLDER 10 LOT

$7.99
Virginia Chemicals Freon-114 Refrigerant 16 OZ can

$10.00
2-Stage Rotary Deep Vacuum Pump 29.92"Hg 1/4HP AC/HVAC

$119.95