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Central Air conditioning systems operate by circulating refrigerant through an indoor coil (the evaporator coil) which absorbs heat and moisture from the air. The refrigerant flows outside to the condenser coil where heat is released. This is often called the "refrigeration cycle". The compressor is the refrigerant pump and the two copper pipes handle the refrigerant flow. A "Heat Pump" is simply the same system in reverse. For new installations (whether pad mounted or roof mounted) it is important that the size of the unit matches the amount of cooling (or load) needed for the area, and the locations of the system equipment will maximize your energy usage. Most often your central A/C system and your heating system will use the same furnace unit and ductwork.
Maintaining Central Air Conditioners & Heat Pumps
        Since air conditioners and heat pumps work on the same basic principles, most of their maintenance and repair needs are the same. Even when it's not in use, the outdoor portion of a central air conditioner or heat pump has to endure the weather all year long. To keep it in good working condition, clean the condenser fins and coils before the start of each cooling season or whenever they get dirty or clogged. If you use your air conditioner more than a few months every year, or if you use a heat pump for both heating and cooling, inspect the filter often to keep dirt and debris from putting an unnecessary strain on equipment.
Air conditioner doesn’t cool
A central air conditioner that runs but doesn’t cool may just need to be cleaned. Plan to do this on a relatively warm day. Follow the instructions in your owner’s manual.

1) Before you begin, turn off the power to the unit. There is normally a shut-off or disconnect panel on the house wall next to the outdoor compressor. Otherwise, shut off the air conditioner’s 240-volt circuit at the main electrical panel.

2) Rake leaves and debris away from the outdoor condenser.

3) Remove any protective grille or cover from the condenser’s fins.

4) Use a soft brush to clean dirt and debris from the fins, and then vacuum them with a brush attachment (be careful not to damage the fins).

5) Unscrew and lift the top grille off the unit, if possible. If the fan is attached to the grille, be careful not to pull any wires loose.
6) From inside the unit, hose down the fins (protect the wiring and motor with plastic sheeting). If your owner’s manual calls for lubricating the motor, do that now—but don't over lubricate. 
Power: Most central AC systems are on a separate circuit breaker, often a double switch. Many people flip this circuit breaker off at the start of the heating system, to prevent someone from accidentally starting the AC unit at a time when cooling is never needed. So check that this circuit breaker is turned on. If it is turned on, turn it off then back on (sometimes the switch has tripped but is close enough to the on position that it seems to be on already). This is one of the most common home air conditioning problems according to technicians who write on the web - so check your circuit breaker!

Thru-Wall and split system, window unit, pad mounted, rooftop mounted, refrigerant, grill, evaporator coil, condenser coil, heat pump, filter, wall thermostats, low voltage thermostat, electronic thermostat, line voltage thermostat, compressor, refrigeration cycle, Air Conditioning Contractors in Philadelphia.  Comfort, air duct, air, air handling units, alternative energy, service, indoor air quality, cooling, cooling system, heating and cooling, energy efficiency, energy management, ventilation.
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  • Air conditioner doesn't turn on and sometimes stops working: If the air conditioner stops functioning, check the fuses and circuit breakers. Make sure the thermostat is adjusted to cool and below the current temperature. Be sure that the furnace power and condenser power switches are turned on.
  • Compressor switches off: If the compressor switches off, it means the high pressure switch has tripped. Reset by pressing the button in the compressor's access panel.
  • Air conditioner making noise: If the air conditioner is making a lot of noise, check whether the fan blades are clean or not. But before doing this, don't forget to turn off the conditioner.
  • Frost build up on the evaporator coils: When the temperature is below 60 degrees and the air conditioner is on, frost may buildup on the evaporator coils. Immediately switch off the air conditioner when you see this happening.
  • Refrigerant leakage: This may happen if the air conditioner is low on refrigerant or is not properly installed. Adding refrigerant may not solve the problem, hence it is advisable to call a trained technician to fix the problem.
  • Air conditioner leakage: If the water is leaking inside the system, it means the system is not cooling, maybe due to the cooling coil getting frozen. This can also be caused due to a low refrigerant charge or insufficient airflow. To rectify this problem it is better to call a trained technician.
  • Room temperature and thermostat temperature don't match: If the temperature set on the thermostat is more than the room temperature, the thermostat may not be calibrated properly or could be installed in a place where it's not able to sense the room air correctly.
  • Air conditioner is on but the air isn't getting cooler: The reason behind this can be that the air conditioner may be dirty and needs to be cleaned. If the units are functioning properly but not cooling, then check the larger of the copper lines exiting the condenser. If it is hot, it could be compressor failure, and if it is cold, there can be air flow problems in it due to a clogged filter.
  • Noisy air ducts: This problem may occur due to the metal heating and cooling ducts, which can be fixed by installing a flexible installation ductwork.

Bensalem 19020,   Broomall 19008,    Chester Heights 19017,   Clifton Heights 19018,   Concordville 19331,   Conshohocken 19428,   Darby 19023,     Edgemont 19028,    Glenolden 19036,   Havertown 19083,   King of Prussia 19406,  Norristown 19403 and 19404,    Prospect Park 19076,   Ridley Park 19078,   Ridley Township 19094, 19043, 19033, 19022, 19081, 19078, 19070,   Springfield 19064,   Swarthmore 19081,   Boothwyn 19061,   Air Conditioning service, Delaware County, HVAC, air, Rooftop Mounted Air Conditioning, Room air conditioners, air quality, Thru-Wall ,Window Unit, Heat Pump, cooling, energy usage, heat pumps, energy-efficient, electronic thermostat, Chester County, Montgomery County.