RV Plumbing Fittings & Pipes Leaking -- Installing New Plumbing Connections -- My RV Works 

Great to hear!

Bingo - I have had two of thee leak so far in my Grand Design. I'm not certain of what the best fittings for these are. Pex barbs are loose in this hose, I have ended up using a slightly larger barb to 1/2" NPT then that to Pex. Kind of messy but it has been working. Is there a better way ?

I have a shurflow water that is leaking where the pressure switch attaches. Does it have a seal or or O ring. I’ve taken it apart and don’t see anything. Thanks Dennis

Glad it was helpful!

Awesome, thank you!

We typically see freezing revealed in a few key places. The water pump itself, the water pump strainer, outside shower fixtures, toilet valves, and plastic sink fixtures. Those are the weak points in the plumbing system with regard to freeze risk. It's rare that we see a Pex line or Pex fittings fail due to freezing.

It could be a dirty condenser.

@@raystanton238 Ray, thank you for the reply. I had cleaned the outside coils, but hadn't opened up the metal fan housing to clean the inside coils. I just finished spraying both with Frost King Air Conditioner Coil Foaming Cleaner. I let it foam down. re-assembled it all and gave it a shot. Unfortunately, I get the same results. Any other suggestions?

Just adding the foaming stuff won’t do much if the unit is not cooling since it won’t rinse itself off, and if it’s excessive buildup it won’t help much anyways. Need to take off the housing outside so you have access to both coils and spray them down with a cleaner, give it some time like 15 min, and then gently wipe off excess grime with a nylon brush and then spray down with water. I use a small 2 gallon weed sprayer and I use a non foaming cleaner so I use the sprayer both to put the cleaner on and to rinse the coils. Sounds like if it’s really that short and not closer to like 1-2 min before it cycles that you may have a leak which will happen if the filters and coils aren’t cleaned regularly. It’s worth a shot to just clean them though and perhaps you can have an hvac tech put in a new evaporator and recharge it if it does have a leak. When I bought my rig I took off the housing to clean it when it worked fine, and it had a ton of junk like small pieces of leaves and etc on the condenser on the side the air comes in, and my evaporator had a layer of thick grime on it. So if you haven’t actually pulled it apart it’s likely still very dirty. For the foaming stuff to rinse off the evaporator has to get cold and it doesn’t really self rinse on condenser coils because they don’t attract much moisture. I’ve read too that it’s never a good idea to depend on that anyways because the cleaners may corrode the copper if they’re left on and potentially cause a leak. If you need more help shoot me a message or like this comment or something like that because it never alerts me to reply’s here. Seems like you likely just have really dirty coils. Especially if that’s the one that you use the majority of the time or the fan runs a lot on that unit. I have to clean the bedroom one on mine twice as often just because we run the fan at night.

​@@mrjjman2010excellent information, thank you

Well, you either have a broken water line, or your low Point drain is open. The low Point drain is going to have two lines sticking out bottom of the RV, one for hot water one for cold water. You open those lines to drain all the water out of the system, so it's possible that one of those got left open.

A best practice I have always used is to attach the fitting to a clean square cut off PEX line. Sometimes that means I have to go up the line a little bit and replace that section or put a union on where I cut back from where the original fitting was. That is to say I'm not going to reuse the end that had a fitting on it. In my brain that side has already been fatigued and I want a nice clean fitting. I believe that's the way the fitting manufacturers expected it to be also.

@@MyRVWorks Thank you, I thought as much, but always good to have your opinion on my repairs. Your advice and experience are my trusted "go to"!

Buddy I get it, I too have cpvc. This video didn't help much. I need the first fitting he showed except for cpvc. I don't know what it's called

I have had success using a plastic welding kit, you just have to find the right type of plastic rods to melt into the tank, usually those are poly tanks not ABS. I keep both types of rods in my service trailer. Here's a link on Amazon for what I use. amzn.to/46jTGsz

This should get your search started: amzn.to/3Bo6Ac7

@@MyRVWorks Thank you I started watching your vids & I’m learning more & more about my rv.