What to use to clean fins on central A/C compressor

Several people have told me that when they have their central a/c units serviced the technician sprays a liquid on to the fins of the outside a/c compressor unit and then they wash it off with a hose.
What is this liquid and what should I be using, as I want to also do this? Is it just a soapy solution? Does it need to be brushed into the fins with a soft bristled brush?
Thanks, Walter
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
Sorry...I mean the condenser unit (which also houses the compressor)....
Walter

Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

Unless you've got greasy build up (and/or a lot of 'baked on' dirt) then just flush the condenser from the inside out with a garden hose.
If you insist on using a cleaner I'd avoid any of the common hydrofluoric acid-based coil cleaners. Here is a safer alternative: http://www.patriot-supply.com/products/showitem.cfm/55541
HTH.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
I just bought a can of spray on foam for this purpose from Home Depot. It was next to some other seasonal AC items, between the light bulbs and the indoor garden stuff. I also bought a comb to straighten out the fins.

this?
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
wrote:

I have a fin comb, but have made almost no progress straightening the fins.
Is there a special technique I should use?
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

It is a two step process. You have to get then straightened a bit and nothing to snag the comb by using duckbill pliers, Then you can use the comb to align them. If you have one of those cheap plastic combs it takes some time. Many years ago when I worked for a company that built eating/cooling coils, they used a metal comb that was fairly deep.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
wrote:

That's what I was leaving out. Thanks.

I think mine is cheap plastic. But I won't know how cheap until I do the first step first.
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload
On Sat, 2 Jun 2007 12:38:48 -0400, "Walter Cohen"

When I asked the same question, I got this as an answer(s). Use a lawn friendly product(don't want to kill grass). Use something that 'foams' to life out dirt in the tiny areas. Don't brush, unless it's a fin comb. Use water to wash out soap and dirt.
Now I've not used advice, so I don't know of a lawn friendly, foaming soap/spray.
tom @ www.WorkAtHomePlans.com
Add pictures here
<% if( /^image/.test(type) ){ %>
<% } %>
<%-name%>
Add image file
Upload

HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.