Join the #1 community for gun owners of the Northwest
We believe the 2nd Amendment is best defended through grass-roots organization, education, and advocacy centered around individual gun owners. It is our mission to encourage, organize, and support these efforts throughout Oregon, Washington, Idaho, Montana, and Wyoming.
Discuss firearms and all aspects of firearm ownership
Join others in organizing against anti-gun legislation
Find nearby gun shops, ranges, training, and other resources
Discover free outdoor shooting areas
Stay up to date on firearm-related events
Share photos and video with other members
...and much more!
hvac
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, on 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 includes both the exchange of air to the outside as well as circulation of air within the building. It is one of the most important factors for maintaining acceptable indoor air quality in buildings. Methods for ventilating a building may be divided into mechanical/forced and natural types.
Looking for a new home for these.
They'd be great for a greenhouse, or some other type of HVAC project.
They're in excellent condition and have the Belimo actuators on them, that are worth more than what I'm selling them for.
Asking $250 for the pair.
Or would trade for/towards a 410 or 20ga...
JB Platinum 7CFM 1/2hp 115v TWO stage
I kept up with oil changes and it still pulls a clean vacuum. With “The Tank” oil change container. Also gonna post on OfferUp but thought maybe it could help someone here
$100 or of equal value in primers….or .44 MAG DIES or RYOBI 18v batteries, water...
NEW CONDITION….
Do you know someone going into trades? Or just curious about refrigeration?
Prepper library reference??
Everything from thermal dynamics, atomic structures, electrical theory, tools and materials of multiple trades…to refrigerant gases, troubleshooting electrical and...
SOLD….SOLD!!!Used a few times 4 years ago when I was in trade school…… I’ve chosen to use analog gauges.SOLD!!!!
SOLD!!!!Fieldpiece 460 back lit. LED w/ the 3 long service hoses and fat 1/2” vacuum hose. And thermal couple clamps. Over 400 refrigerants pre programmed. As I said used a few times...
Question for the forum:
My wife has a friend who is undergoing some issues and is facing some big expenses with limited means. They are 4 generations of girls in the same house (great-grandmother, grandmother, mother and 11-yo daughter) with no men around to help out. I just learned their...