Unless I'm using the filter that comes with the equipment I always use HH because that's just what I stock in my truck.
I figure if I have any acid or wax to clean up I will already be using the right filter for the job. I don't think the price is that big of a difference for me to worry about.

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This is my thought exactly!

 

On the other hand I have heard that the standard Sporlan filters have more water capacity than HH.

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Install either 16 cu. in. or 30 cu. in. HH Flare LLFD with a bypass. Flare Nuts, 90° Elbows, Tees, Ball Valves w/ Access Ports. Make sure that one Access Port stays on the LLFD side, once you isolate. Add Neutralizer and a Suction Line Filter, if required. You can replace the LLFD and perform Acid Tests weekly, if needed.
When I worked for The Big Blue J, we’d pipe-in LLFD bypasses and add Suction Line Canisters. We’d change the oil and refrigerant too. This was on LC equipment, from Boxcars to Scroll Chillers.


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Might be a little overkill for a standard residential system but I like it.

 

I don't know if there's any reason not to install an HH. However, if the system has a standard drier and some moisture from the start, it shouldn't have the chance to create acid since the drier will remove the moisture pretty quickly....right?

 

Seems to be the reasoning most manufacturers operate on. I see quite a few 20-30yr old compressors a year with acid burnout tho, and have to wonder if maybe refrigeration oil slowly reacts with moisture collected in the filter drier as it passes thru, eventually causing enough acid build up in the system to kill the compressor?
Or maybe my hypotheses that moisture is causing the acid build up is wrong. I've noticed hybrid cars that use electric compressors also use a specialized di-electric refrigerant oil... is it possible that regular refrigerant oil isn't completely di-electric and exposed internal coil connections slowly react with the oil, producing acid??

At any rate, appreciate the feedback, sounds like I'll be switching to 10 or 16 cu/in HH type filter driers on the truck.

 

I just do a proper install, evacuation, and startup. Never have to worry about moisture or acid. I’ve still got hundreds of systems still running fine after 20-30 years. Without any filter! I only install a filter if it comes with the unit.

 

Right on! Right on!