Alright, grab your filters—you bought the right ones, right? (If not, pause here and check your manual. Don’t be a hero.) Also, get a towel. Trust me. Water will try to escape like a pet hamster during cage cleaning.
Step 1: Shut off the water. Look for a little valve on your feed line—usually blue or white. Turn it 90 degrees. Then open the RO faucet to relieve pressure. Nothing should come out. If it does, you forgot the valve. No judgment.
Step 2: Disconnect the filter housings. Use the plastic wrench that came with your system. (If you lost it, you can buy a cheap one online. Or use your hands, but good luck if it’s tight.) Unscrew each housing carefully. Water will spill out. That’s why we have towels. Stay calm.
Reverse Osmosis Filter Replacement, Membrane Solutions 75 GPD Complete
Step 3: Remove the old filters. Pop out the used ones. Give them a respectful nod—they served their time. Then rinse the housing with mild soap and water. Do not use bleach or harsh cleaners. That stuff is for toilets, not your drinking water.
Step 4: Insert the new filters. Pay attention to orientation. Some filters have arrows. If yours don’t, remember: “big end up, small end down” for most carbon blocks. For the sediment filter, just shove it in there. It’s not picky.
Step 5: Tighten everything. Hand-tighten the housings first, then give them a smidge more with the wrench. But don’t Hulk-smash them. Overtightening causes cracks. Cracks equal leaks. Leaks equal a wet cabinet and a very sad afternoon.
