Posts Tagged ‘Aggravation’

Miller Plumbing Heating Cooling corrects thousands of air conditioner and heat pump problems each year. One of the most common problems is no cooling and ice that forms and blocks your systems air flow.

Moving the correct amount of air is nessary to heat or cool your home properly. One easy thing to check is your filter. Clogged filters will cause your A/C to freeze up causing excessive condensation or ice to build up on the cooper line kit or indoor coil or outdoor compressor.

The blower fan speed is important and should be set to match the size of your cooling equipment. Low fan speed can cause a low suction pressure and freezing , high or excessive fan speed will use more electricity be noisy and not allow the air to be cold enough to cool properly. 

Duct work that is under sized can cause problems that mirror clogged filters and incorrect fan speeds. Your duct work should be sized to move enough air to accommodate your equipment needs.  

Ducts that bang or pop indicate filter fan speed or sizing problems. Clogged cooling coils will cause freezing, coils can be visually inspected to see if they need serviced.  

Systems that freeze up can also have restricted piston , txv or metering devices. But the number one cause for ice freezing and poor cooling is low refrigerant charge.

leaks some where in the system allow refrigerant to leak out suction pressure below 60 psi will let your system ice up.

Leak testing with nitrogen and recharging with digital charging tools sooner than later will save you aggravation and money.

Miller Plumbing Heating Cooling

3131 Library Rd

Pittsburgh PA 15234

412-848-5353