Sioux Chief 660-HB Water Hammer Hose Arrestor, 3/4-Inch

We have an LG water saving front loading washer, older model, but still hammers the water lines every single cycle. Why washers are designed with the fill a little at a time nonsense is beyond me, but thats a gripe for another forum. Now to this Sioux Chief Water Hammer Arrester. Installation was a breeze, solder joints are well done and overall built very solid. No leaks off either of the two installed, washer hoses fit nice and snug, and overall they function really well. I have had this installed for a little over a year now, and although the water hammering has come back some, it is still much better than without. There was an instant improvement when first installed, no hammering what so ever. I actually have a new set on standby to be installed one of these days. Highly recommend for anyone in an older home without a pressure reducing valve installed on your water main.

This thing actually works! It's easy to install, you need to turn off the hot & cold water outlets to your washer, unscrew the hoses (they will still have some water left in them, so have a towel handy), screw the hoses into the arrestors first, and then finally screw the arrestors directly in to the back of your washing machine. They have a long stem so they can clear the back panel of the washing machine easily if the inlets are recessed. My washing machine was originally installed improperly and the plastic threaded inlets for hot and cold water were kind of chewed up, so my advice when putting on the new arrestors is to go very slowly and carefully. Back up if you feel any resistance and remember your righty-tighty lefty-loosey rule. They will screw on quite a way before you feel the internal O-ring washer bump up against the inlet and only then will it feel tighter as you screw it on. If you feel resistance earlier then you're probably not aligned with the threads and you should stop immediately and start over. So even with a washing machine with messed up water inlets it was still a relatively easy install if you have some patience. Just don't rush it. I would advise not putting the arrestors on first and then attaching the hoses because tightening the hose-to-arrestor connection will put a lot of strain on the washing machine's water inlets. In use the arrestors don't make any noise that I can tell, and if they do it's way quieter than the pipes banging around in your walls. Water pressure seems fine and the washing machine does the job. No problems there. It's a big piece of mind to know that my pipes aren't rattling themselves to death now. I get the same water hammer effect from my dishwasher so I'll definitely be installing one there next. Now I wonder why all appliances don't come with this feature built in, or at least come with a set of arrestors. Highly recommended! And for somebody with zero plumbing experience it was not a big deal.

Several years ago we bought a new LG washer and quickly learned they are notorious for causing "water hammer" as the supply valves open and shut. LG even acknowledges this in their owner's manual. The solution are these Sioux Chief water hammer arresters, which simply install on the back of the washer, then you hook the supply hoses up to the arresters. I believe you could also put the arrester on the faucet if that is easier in your set-up. They completely eliminated water hammer in our house. Only downside is the arresters do wear out and eventually stop working after 3-4 years. Sioux Chief has a guarantee (I believe it is lifetime) so they will replace them at least once, but I just bought these. Cheap and easy fix, and saves your pipes! Note: there are versions that are built into the supply box, directly soldered to the shut off valves. Because the water hammers do wear out, I would strongly suggest avoiding these "2-in1" assemblies as the arrestors will be much harder to replace.

They work well for reducing water hammer noise, but I'd like them to last longer for the price. I purchased a pair in January 2023 for my downstairs washer. They're super simple to install, and they virtually eliminated the noise (about 95% of it). However, it's now May 2025 and I realize I've been hearing the water hammer again for the last couple months, so it seems these only last about 2 to 2.5 years. I'm on municipal water that's actually pretty decent to begin with, but it also goes through a whole-home filter and softener before it gets to these, so it seems like 2 years might be the best-case scenario. Their longevity is probably also impacted by the quickness of the washer valve's closure, and the Whirlpool washer I've got downstairs closes its valves VERY quickly. I haven't had any issues with leaks, not even a drop, so the build quality on mine is good. I understand these are a consumable or limited-life item and they wear out eventually, but at $20 a piece from something that likely costs a buck to make, I'd like to see them last longer. Again, water quality isn't really a factor in my home, so these should've lasted at least five years (in my uneducated opinion, since I don't really know how these are built and work). That said, I'll be getting replacements here soon, and the same ones at that. Overall: Great product, does its job very well, is built well, but the lifespan is a bit short in my opinion (-1 star).

Works great. Silences your noisy pipes and quiets the water hammer. It's a world of difference. I no longer feel that the pipes in my house are going to rip through the drywall. No adverse effect on the washer or washing at all. Super easy to use, just remember to have some Teflon tape handy. You can put it at any point on from the faucet at the wall to the washer, although I tend to get the best results putting this directly between the washer and the inflow hose. This typically lasts about a 18 months in our house before it wears out and you have to buy a replacement. Just think of it like brake pads on your car.