"HeyBub" wrote in message
...
Dave wrote:
Have just installed a piece into the drip line of my home's central
A/C evaporator unit that will allow me to connect a garden hose and
wash out the line downstream from the evaporator, as well as adding
bleach water to the same part of the system. Thing is, the 3/4" PVC
pipe was almost completely blocked by whatever is growing in there,
and now I am wondering if my evaporator coil is in similar condition.
It's been at least ten years since this unit was installed, and it is
a sealed unit, with no access to the drip pan for placement of
tablets or chemicles to prevent the growth of what now nearly blocks
my drip line. Am I going to have to pay someone to take this damn
thing apart and clean it, or is it possible that I could do that? I
am fairly handy with tools, but have never (yet) attempted anything
like this. What say those who know about such things? I am willing
to tackle it, I would just hate to screw it up.
Just for informational purposes, the evaporator sits above the blower
unit (in a closet at the center of the house) and the rest of the
system is up in the attic (ductwork) and outside (compressor, I
believe it is called.) I guess I need to get some estimates, and
talk with someone who does this professionally. In the meantime I am
all ears for those who care to share their opinions on what I
describe.

While mine has removable panels, it seemed a lot of trouble to remove
eight screws.

I drilled a 3/4" hole in the sheet metal for adding the bleach (with a
funnel), closed the hole with a cork, and called it done.

I was just looking at my evaporator unit with the thought of where to drill,
and realized I don't need to drill. There is an extra fitting next to the
drip line, like it was set up for two drip lines but they only used one.
And the cap on the second fitting is not cemented in place- it turns with
the help of a pair of pliers. Now waiting for the HVAC guy to confirm for
me that I can use this fitting to add bleach to the system. Damn. Oh, and
the bleach I put in the drip line list night worked at clearing it out while
we slept. I poured some water into the pipe earlier to see how much it took
to fill it up, and it never got full. Checked outside and the hose had spit
out all the goo that I saw inside the pipe yesterday. It now runs clean and
clear. Only the 18 or so inches above the ball valve now need to be
cleared. I love it.

Thanks, all.

Best

Dave