Share
Heating, ventilation, and air conditioning (HVAC) is the use of various technologies to control the temperature, humidity, and purity of the air in an enclosed space. 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.
Related Searches

If you like heater, try these related items.

Similar Topics

Customers looking for heater also searched for:

Sponsored Links
Banner 1
Pro Breeze® 1500W Mini Ceramic Space Heater Mini Heater Fan Heater Black
Pro Breeze® 1500W Mini Ceramic Space Heater Mini Heater Fan Heater Black
Price:
27.99 USD
Ends:
Jan 29, 06:28 pm
900W Portable LED Digital Electric Heater Wall Sockets Mini Fan With Timer Home
900W Portable LED Digital Electric Heater Wall Sockets Mini Fan With Timer Home
Price:
22.59 USD
Ends:
Feb 16, 01:42 am
Comfort Zone CZ442 Portable Electric Ceramic Personal Fan Space Heater, Black
Comfort Zone CZ442 Portable Electric Ceramic Personal Fan Space Heater, Black
Price:
27.97 USD
Ends:
Feb 06, 04:36 pm
Portable Ceramic Mini Heater Wall Outlet Plug In Space Heater 500W Timer Digital
Portable Ceramic Mini Heater Wall Outlet Plug In Space Heater 500W Timer Digital
Price:
21.37 USD
Ends:
Feb 16, 02:33 am
Comfort Zone CZQTV007 1500W Electric Quartz Infrared Radiant Tower Heater, Black
Comfort Zone CZQTV007 1500W Electric Quartz Infrared Radiant Tower Heater, Black
Price:
64.99 USD
Ends:
Feb 06, 04:48 pm
Pro Breeze® 1500W Mini Oscillating Ceramic Space Heater Mini Heater Fan Heater
Pro Breeze® 1500W Mini Oscillating Ceramic Space Heater Mini Heater Fan Heater
Price:
34.99 USD
Ends:
Jan 29, 06:18 pm
Portable Electric Space Heater Super Quiet Oscillating Heater Fan Thermostat
Portable Electric Space Heater Super Quiet Oscillating Heater Fan Thermostat
Price:
25.99 USD
Ends:
Feb 10, 09:18 am
MINI Portable Fast Heater Heated Heating Electric Cooler Hot Fan Winter 400W US
MINI Portable Fast Heater Heated Heating Electric Cooler Hot Fan Winter 400W US
Price:
18.75 USD
Ends:
Jan 31, 02:36 am
Taotronics Space Heater Indoor Portable Office Heater Adjustable Thermostat1500W
Taotronics Space Heater Indoor Portable Office Heater Adjustable Thermostat1500W
Price:
49.47 USD
Ends:
Feb 23, 12:57 pm
ZOKOP Portable Indoor Electric Infrared Space Heater 1500W 12H Timer w/ Remote
ZOKOP Portable Indoor Electric Infrared Space Heater 1500W 12H Timer w/ Remote
Price:
65.99 USD
Ends:
Jan 26, 01:37 am
Electric Space Fast Heater Fan Portable Home Office Adjustable Thermostat 1500W
Electric Space Fast Heater Fan Portable Home Office Adjustable Thermostat 1500W
Price:
24.99 USD
Ends:
Feb 16, 12:57 am
1500W Oil Filled Heater Portable Radiator Space Heater w/Adjustable Thermostat
1500W Oil Filled Heater Portable Radiator Space Heater w/Adjustable Thermostat
Price:
65.49 USD
Ends:
Jan 28, 06:49 am
Comfort Zone 1500w Fan-Forced Electric Radiant Space Heater w/ Thermostat CZ550
Comfort Zone 1500w Fan-Forced Electric Radiant Space Heater w/ Thermostat CZ550
Price:
39.99 USD
Ends:
Feb 16, 01:55 pm
Electric Space Fast Heater Fan Portable Home Office Adjustable Thermostat 1500W
Electric Space Fast Heater Fan Portable Home Office Adjustable Thermostat 1500W
Price:
24.99 USD
Ends:
Feb 12, 01:53 am
Warm-Living 1,500W 17
Warm-Living 1,500W 17" Freestanding Infrared Stove Heater with Remote
Price:
49.99 USD
Ends:
Feb 16, 08:31 pm
 Intertek Electric Fan Forced Portable Heater 1500-Watt 5K BTU 1004 348 759
Intertek Electric Fan Forced Portable Heater 1500-Watt 5K BTU 1004 348 759
Price:
23.95 USD
Ends:
Feb 10, 02:13 pm
Portable Ceramic Mini Heater Wall Outlet Plug In Space Heater 500W Timer Digital
Portable Ceramic Mini Heater Wall Outlet Plug In Space Heater 500W Timer Digital
Price:
22.80 USD
Ends:
Feb 20, 08:31 am
Forced Air Kerosene Heater 80,000 BTU Portable Overheat Safety Shutdown Outdoor
Forced Air Kerosene Heater 80,000 BTU Portable Overheat Safety Shutdown Outdoor
Price:
216.99 USD
Ends:
Feb 13, 06:45 am
Comfort Zone 7500 Watt 240V Digital Fan Ceiling Mount Heater w/ Remote CZ230ER
Comfort Zone 7500 Watt 240V Digital Fan Ceiling Mount Heater w/ Remote CZ230ER
Price:
174.99 USD
Ends:
Feb 07, 06:40 pm
2022 Electric Space Fast Heater Heating Fan Portable Home Office 400W Black
2022 Electric Space Fast Heater Heating Fan Portable Home Office 400W Black
Price:
15.88 USD
Ends:
Feb 13, 01:58 am
Banner 2