Carver Owners Forum

Has anyone had their marine air converted to run on a newer refrigerant . Thanks

Why? Pretty sure it'll require a new compressor at least. The only reason I can think of going through the trouble is if there's a problem with the current one and it has to be replaced anyway. Having said that, the cost to do it is such that it usually makes more sense to simply replace the whole unit in some cases given that spending money on a new compressor and still having a 20 year old air conditioner may mean that something else is bound to fail on it in the near future like the fan, control board, evaporator, etc., all pricey items as well.

I agree with Viper and R134 will not cool like R22 refrigerant. Mike

When we bought our 3697, the forward ac was missing. It is right under the bed. The older units were loud. I bought a new Webasto. The air coming out of the vents is more noisy then the unit itself.

If you have any issue with your older ac, I strongly recommend this Webasto, but I would also guess any unit with a scroll compressor will be similarly quiet.

. Thankyou all. The only reason I am wanting to change the refrigerant is because In England r22 is illegal and as mine require re gassing and I'm needing a replacement

waybomb wrote:Source of the post When we bought our 3697, the forward ac was missing. It is right under the bed. The older units were loud. I bought a new Webasto. The air coming out of the vents is more noisy then the unit itself.

If you have any issue with your older ac, I strongly recommend this Webasto, but I would also guess any unit with a scroll compressor will be similarly quiet.

I appreciate this info. I'm in the middle of deciding what to do with my salon ac unit. I have a compressor hammering and on it's way out. I've been looking at replacement units, and looked into those Webasto after reading your post. A quiet unit would be a good thing!

Go shopping as well. Prices are all over the place.

mermaid marine ac are good units with a 5 yr warranty currently have 2 and 1 on another boat, they would be a brand to check out
http://mmair.com/marine-division/marine ... ditioning/

I'd bite the bullet and go with a new unit and make sure it has a stainless steel drip pan too. Converting to R134 also requires changing o rings and a few other parts compatible with R134. Mike

Just an FYI, you can get some "drop in" CFC free replacements for r-22 that only require recovery of the existing refrigerant and evacuating and recharging the system but your capacity will drop about 20%.
Converting to 134a requires you remove all of the oil (a difficult task with rotary compressors) and replace the oil and refrigerant. You will also need to replace the expansion valve(s) and add a filter dryer. As mentioned above with an older unit, its not worth the time and $$$.