Coleman Mach 8 Fans... 3 blade, 5 blade, 6 blade?
My RV has two Coleman Mach 8 heat pumps on the roof. 16 months ago the rear unit sprung a refridgerent leak and had to be replaced.
This summer before our trip I cleaned the roof and decided to clean the A/C coils. My front unit had a 3-blade fan and the little metal "hat" to keep the cover from sinking into the fan.
I noticed the "new" rear unit had a 5-blade fan. So, I thought it needed replaced. When I looked online I saw folks replacing their 6-blade fans for 3-bladed ones. So, I figured I just counted wrong. To remedy the fan blade issue I ordered the 3-blade upgrade kit with the little metal hat.
Today I went up to install the "upgrade" and found it WAS 5 blades after all but more than that it has a plastic guard ringing the fan. too. It also is connected directly to the fan's rotating motor armature with a solid metal cap that looks like it needs a special tool to unscrew. And, there are even small metal balancing weights on some of the blades.
Looking online I see this available on the Mach 8+. It seems much more robust than the 3-blade fan "upgrade." for the Mach 8.
I can't find much more online about the 8+ so I'm not sure what the Plus is?
Here's a photo:
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