Water filter stuck

The right tool/wrench, maybe a little gentle tapping with a rubber mallet, it should free up. When you do get it off and go to putting it back together, you might want to replace the O-ring, and be sure to hand-tighten ONLY. Don't use the wrench for that. If you can't get it tight enough to not leak, it's a sure sign that the O-ring is toast.

Had no idea there was the tool. Will get one. Thanks.

fischer wrote:
If your at a campground your fellow campers have the correct wrench.
You should try useing a pipe wrench

Hate to disagree but a pipe wrench big enough for the body of a filter would have to be enormous and would wouldn't have jaws deep enough to wrap around a filter housing. If it did, I suspect it would crack it.
Best me thinks to use the appropriate filter wrench shown above. Right tool for the job and all that junk.

SAR Tracker wrote:
Do you have the right wrench?

Yep. One of these + tap it with a rubber mallet. It works with my Big Blues . . .

If your at a campground your fellow campers have the correct wrench.
You should try useing a pipe wrench

A filter wrench near the threads will squeeze it and make it tighter. Move the wrench down or get the proper wrench.

SAR Tracker wrote:
Do you have the right wrench?

No, he said he's using an oil filter wrench. Spray liberally with a silicone spray, wait 20 mins and try again....Dennis

Do you have the right wrench?

Have you opened a faucet and relieved system pressure..then turn filter to the 'left' (counter clockwise) to loosen

Try to easily turn it the other direction.