Deposit on Condenser
Anybody know what this deposit could be and how to get it off. It showed up over the winter while heat pump was running.
could be wrong but maybe looks like some kind of calcium build up from the fan pulling moisture through the fins while snowing or raining
they have an acid that is made for cleaning indoor and outdoor unit green for indoor and red for outdoor, you may try that but if the fins don't appear to be stopped up from this build up it's not going to effect the performance
Shouldn't we be learnin and livin instead of livin and learnin...
The fin material is aluminum, the black coating could possibly be wearing off, or it could be corrosion (aluminum oxide)
didnt you post this exact thing about a week ago?
Originally Posted by bamamule
It looks like the new Lennox stripe model. Very rare so I would take good care of it.
I guess slow learning may be a problem here.
Originally Posted by ar_hvac_man
It's Not Rocket Science, But It is SCIENCE
with "Some Art". ___ ___ K EEP I T S IMPLE & S INCERE
Define the Building Envelope and Perform a Detailed Load Calc: It's ALL About Windows and Make-up Air Requirements. Know Your Equipment Capabilities
Some of the coil coating has come off. Unless you live next to the ocean, that won't hurt a thing. If you live next to the ocean the coil coating protects the coil from salt air. Hose the unit off once a month and it will be fine. Hosing any outdoor coil off on a regular basis won't hurt any way and reduces coil corrosion.
Remember, Air Conditioning begins with AIR.
Originally Posted by Kevin O'Neill
Flat black spray paint also works.
This is a common problem in West Michigan, don't know what causes it or how to correct it, but would like to. Don't think spray paint is the answer though. Would create clogs in the coil, and would create an insulating layer on the fins, the manufacturer uses a micro thin layer of a specially formulated paint. Might be a good band-aid for a dealer with an un-happy customer who dosen't know any better and is just concerned about appearance.
BTW this will not affect performance.
GOD knows if you did your best! <><
I've seen Lennox heat pumps do this. If it's not scale it's just the paint coming off...most likely from the many cycles of freeze/thaw the coil surface undergoes all winter long.
Building Physics Rule #1: Hot flows to cold.
Building Physics Rule #2: Higher air pressure moves toward lower air pressure
Building Physics Rule #3: Higher moisture concentration moves toward lower moisture concentration.
i would just hose the coil out and not worry about it
as has been said ice and defrost cycling has duled the color
The black coating is most likely pre-coated fin stock. The white poweder could be oxidation on the fin edges as these are not protected during coil process or it could be a residue of some sort not even related to corrosion. My guess is oxidation at these exposed edges. Corrosion creepage will compromise fin integrity, cause fin failure and eventually a lack of heat transfer.
This will also happen if the service tech that PM'd your unit used too much coil cleaner on the unit and ate some of the black coating off. It happens.