Geekpure 20 Inch Whole House Water Filter Housing Fit for 4.5 x20 Inch Filters - Clear-1" NPT Brass Port (1)

Get fat teflon tape and use a lot of it. Don't bother with compound, or use both tape and compound. The pipe threads are cut kinda liberally, so they leak easily if you don't use enough tape or don't tighten the fittings enough. Compound alone allows leaks to sneak through. I also had a problem where the valve on top would leak water, but they stopped leaking, so no problem. I believe they're designed to purge air from the system. I think they just needed to seat properly under pressure. When I say "leak", I mean a drip every few minutes, but like I said, they all stopped, so probably normal.

I like the build quality up until I filled it with water. Its max rated pressure is 75psi, my mains supply is 55, so I thought what could go wrong? Well, the 1inch inlet and outlet leak and despite my using 12m of PTFE tape and 1/3 tube of Ls-x silicone thread sealer on either end I could not get it it to seal. It just weeps. I decided to swap the 1" to 15mm step-down adapting brassware to see if that helped, and low and behold one side is tighter than the other! So I replaced the brass at screwfix thinking it was the step down rings but the threads are milled to different sizes, fractionally, but enough to make one side leak more than the other.

Holy geeze these are big! They can filter a ton of water for sure! I installed 3 of these for a whole home filter going from 20 microns down to 1 micron. They were easy to install but had to use some serious wall anchors to ensure they would not pull through. They are of solid quality and the design is nice having a air purge. For me they are a good value and I like the clear canister so I can easily tell when the filters are dirty making them more functional than the non clear ones.

I purchased and installed a clear and blue filter in my home for sediment and Iron. The water is noticeably cleaner when sitting in a mason jar over a period of 3 days. Before the filter, the sediment and iron in the water would collect at the bottom and form a later. Now there is no collection of sediment and the water tastes amazing! Geekpure's customer service has been a blessing as the brass fitting has a small crack which led to a slow leak on one of the filters. They very promptly solved my issue! Best customer support I've had from any company! Highly recommend

I bought this back in September 2025, but just got around to installing it today. It leaks right through the black plastic housing. If you look at the molding it has a lost of swirls in the leaking area which is indicative of a cold mold. This is very poor quality. Unfortunately the Amazon 30 day return window is closed. I am not happy.