Heating, ventilation, and air conditioning (HVAC) is the technology of indoor and vehicular environmental comfort. Its goal is to provide thermal comfort and acceptable indoor air quality. HVAC system design is a subdiscipline of mechanical engineering, based on the principles of thermodynamics, fluid mechanics and heat transfer. "Refrigeration" is sometimes added to the field's abbreviation, as HVAC&R or HVACR or "ventilation" is dropped, as in HACR (as in the designation of HACR-rated circuit breakers). HVAC is an important part of residential structures such as single family homes, apartment buildings, hotels and senior living facilities, medium to large industrial and office buildings such as skyscrapers and hospitals, vehicles such as cars, trains, airplanes, ships and submarines, and in marine environments, where safe and healthy building conditions are regulated with respect to temperature and humidity, using fresh air from outdoors. Ventilating or ventilation (the "V" in HVAC) is the process of exchanging or replacing air in any space to provide high indoor air quality which involves temperature control, oxygen replenishment, and removal of moisture, odors, smoke, heat, dust, airborne bacteria, carbon dioxide, and other gases. Ventilation removes unpleasant smells and excessive moisture, introduces outside air, keeps interior building air circulating, and prevents stagnation of the interior air. Ventilation often refers to the intentional delivery of the outside air to the building indoor environment.
Related Searches

If you like heater, try these related items.

Similar Topics

Customers looking for heater also searched for:

Sponsored Links
Banner 1
Vintage Athens Stove Wood Furnace Heater Circulator Old Iron 1930's Antique
Vintage Athens Stove Wood Furnace Heater Circulator Old Iron 1930's Antique
Price:
402,788.00 USD
Ends:
May 09, 02:43 am
Protex Heater Valve 1/2 Npt X 5/8 Hose (T666)
Protex Heater Valve 1/2 Npt X 5/8 Hose (T666)
Price:
182,218.22 AUD
Ends:
May 14, 09:42 pm
Spectre Heater Hose (39625)
Spectre Heater Hose (39625)
Price:
175,710.00 AUD
Ends:
May 11, 08:33 pm
Spectre Heater Hose (39710)
Spectre Heater Hose (39710)
Price:
175,708.00 AUD
Ends:
May 06, 10:34 pm
Spectre Heater Hose (39610)
Spectre Heater Hose (39610)
Price:
175,710.00 AUD
Ends:
May 11, 08:34 pm
Spectre Oil/Heater Hose (39506)
Spectre Oil/Heater Hose (39506)
Price:
175,708.00 AUD
Ends:
Apr 28, 12:41 pm
Denso Heater Core For Mazda RX8 03-08 116120-9090 Series 1 (HC0090)
Denso Heater Core For Mazda RX8 03-08 116120-9090 Series 1 (HC0090)
Price:
164,016.10 AUD
Ends:
Apr 26, 03:58 am
Mackay Heater Hose Rear Toyota HDJ80 4.2Lt Dsl 8720960150 (CH3073)
Mackay Heater Hose Rear Toyota HDJ80 4.2Lt Dsl 8720960150 (CH3073)
Price:
163,996.40 AUD
Ends:
Apr 26, 03:58 am
Tridon Heater Fan Resistor Holden Colorado Rg 4 Pin (TFR179)
Tridon Heater Fan Resistor Holden Colorado Rg 4 Pin (TFR179)
Price:
163,996.40 AUD
Ends:
Apr 26, 04:04 am
Gates Heater Hose FOR HONDA LEGEND KA8 (02-0174)
Gates Heater Hose FOR HONDA LEGEND KA8 (02-0174)
Price:
163,996.40 AUD
Ends:
Apr 27, 09:41 am
Gates Heater Hose (02-0174)
Gates Heater Hose (02-0174)
Price:
163,996.40 AUD
Ends:
Apr 27, 09:41 am
Gates Heater Hose FOR HONDA LEGEND KA7 (02-0174)
Gates Heater Hose FOR HONDA LEGEND KA7 (02-0174)
Price:
163,996.40 AUD
Ends:
Apr 27, 09:41 am
Gates Heater Hose (02-0097)
Gates Heater Hose (02-0097)
Price:
163,996.40 AUD
Ends:
Apr 27, 10:54 am
Gates Heater Hose FOR TOYOTA LEXCEN VN (02-0409)
Gates Heater Hose FOR TOYOTA LEXCEN VN (02-0409)
Price:
163,996.40 AUD
Ends:
Apr 27, 10:56 am
Gates Heater Hose FOR TOYOTA LEXCEN VP (02-0409)
Gates Heater Hose FOR TOYOTA LEXCEN VP (02-0409)
Price:
163,996.40 AUD
Ends:
Apr 27, 10:56 am
Gates Heater Hose (02-0479)
Gates Heater Hose (02-0479)
Price:
163,996.40 AUD
Ends:
Apr 27, 10:56 am
Gates Heater Hose FOR HOLDEN COMMODORE VL (02-0479)
Gates Heater Hose FOR HOLDEN COMMODORE VL (02-0479)
Price:
163,996.40 AUD
Ends:
Apr 27, 10:56 am
Gates Heater Hose FOR TOYOTA COROLLA _E8_ (02-0786)
Gates Heater Hose FOR TOYOTA COROLLA _E8_ (02-0786)
Price:
163,996.40 AUD
Ends:
Apr 27, 10:56 am
Gates Heater Hose (02-1073)
Gates Heater Hose (02-1073)
Price:
163,996.40 AUD
Ends:
Apr 27, 10:56 am
Gates Heater Hose FOR TOYOTA LAND CRUISER PRADO _J9_ (02-1266)
Gates Heater Hose FOR TOYOTA LAND CRUISER PRADO _J9_ (02-1266)
Price:
163,996.40 AUD
Ends:
Apr 27, 10:56 am
BANNER 2