your outside unit is buzzing because the low voltage control signal is activating the switch " the contactor" but your unit for some reason is not starting thus no cool air. either your circuit breaker is tripped or you may have other more serious problems. call a licensed hvac service contractor.
The outdoor portion of the central ac unit is what gives up the heat from indoors, so it has to be outside. For a more thorough explanation see the question: How does air conditioning work.
That is exactly how a heat pump works in heating mode are you sure it's not a heat pump?
Depends on the outdoor temp. If it's 75 outside, your system should easily bring your house down to the 68 degree setpoint. If it's 100 degrees outside, you'll never get there. Unless, that is, your system is too big for your home. Then it will cool you down just fine, but you'll have humidity problems...that's a whole other discussion. Most central air conditioning units are designed to maintain a 75 degree indoor temp at 55% relative humidity on a 95 degree day. So a indoor/outdoor temperature difference of about 20 degrees or so is what you should expect.
in central ac we use chiller to cool the water which is circulated throughout the building . by blowing air over the cooled water tubes the air got cooled. in night time inplace of cold water FM chiller , hot water is circulated which make the air hot.
a) same pressure on inside pushing out. b) unequal pressures.
No. They can't get through the enclosed system and inside the house there is a filter. When a filter is changed all that is seen is dust.
cicadas
Central air conditioning is an air conditioning system with a central unit that distributes air to the rest of the house through vents. Some people have air conditioning units that are separate for each room, but most houses today have a centralized unit, usually located outside the home, which pumps air to each part of the house through the ventilation system. That is what is referred to as Central Air conditioning, because there is just one centralized unit cooling the entire place, as opposed to many autonomous units cooling each room.
The outdoor portion of the central ac unit is what gives up the heat from indoors, so it has to be outside. For a more thorough explanation see the question: How does air conditioning work.
Central air conditioning systems are designed to provide ventilation by bringing in outside air. Leaving a window open would tend to defeat the cooling effect.
You mean the outside unit is running and blowing but the inside unit is not blowing? Shut it off! Who ain't blowing? Elaborate please..
If you are talking about elements, they are electrons.
The heat transfer coils are in the outside unit where the compressor and fan are to dissipate the heat generated and removed from the inside air.
If your present central A/C is not that old consider just replacing the outside condenser unit, check into that first before considering replacing the entire central A/C system.
yes outside
Yes. Example sentence: We could hear the bees buzzing outside our window.
Uhm...? Black, tiny wings, annoying buzzing sound, same as the outside ones. That is where they come in from.