Looking for insight on home A/C issue:
When running heat pump (RUUD unit), checking air coming from ducts shows approx. 80-85% humidity coming from supply. Air being pushed is running 50-55 degrees F. When AC is not running, home feels damp. AC/air handler is draining well (verified by opening handler cover and looking at output of drain line outside). Last inspection of ducting reveals no noticeable breaks in line.
ANY and all input would be most welcomed either at work or via home email at Teachguns@aol.com
Regards,
GMCS Wilbert

A few things to look at is the difference between the air temp coming out of the duct compared to the room temp. It should be close to a 20 degree diff. Next high humidity? How was it measured? Hygrometer? sorry if the spelling is wrong. Did you check the evap while running to make sure it is not frozen over? Just a few thoughts off the top of my head.

Good Luck,

Chuck

Clean the cooling fins of leaves twigs dead bugs, grass etc. Cut any bushes from around the unit if necessary.

Roger on all above. Many thanks. Compressor unit has a 93' date on it so....maybe it's had enough?!?!?
Supply vents throughout house are blowing 50-55 degrees. House maintains about 70 degrees when thermostat set as such.
I use a device I have for camping that has wind guage, hyrdometer and all as one device where I measured the humidity at the vents.
All continued input/suggestions are appreciated.
R/GMCS

First, remember that the only time your system will be dehumidifying is when the compressor is on and running. To help with any hot spots in the house, run your fan in the "on" mode from the thermostat instead of the "automatic" setting.
Second, the best way to determine what your humidity levels are, get a sling psycrometer and take a good reading.
Third, make sure your return air filters are clean and the evaporator coil is clean. Make sure the drain line is clear and flowing (pour a cup of bleach into the pan every once in a while to keep it clear).
Fourth, make sure that ALL of your supply and return registers are open. You need to move the correct amount of air through your coil to evaporate and ring out the moisture (400 cfm/ton).
Fifth, if you are certified to handle refrigerants and have a set of gages, you need to check your refrigerant charge. If the unit is a 93, you probably have R22 refrigerant. A starting point for the correct charge would be approx. 60# of suction pressure. the suction line (larger line), should be cold to the touch. Check the smaller line (liquid line) and see if it is hot. if so, the head pressure may be running high. Clean your outside coils as was recommended by shallowater. Since this is probably not a high efficient model, you can get an idea of your condenser by taking temp readings of ambient air and what is coming out of the condenser with compressor running. Look for about 30 to 35 degrees increase out of the condenser.

All panels need to be in place on the air handler when compressor is running. If you are using a setback type of thermostat, don't set the temp to high when you are gone (78 degrees with empty house). generally the comfort range for people is 72 to 75 degrees.

Feel free to contact me at work if you have any other questions.

MKCM Delgado
MLCLANT ASSIST Team
Master Air Conditioning Technician
(I'm in global)