Is Your Water Tasting Off? Time for a Pentek Big Blue Filter Change (A Step-by-Step Guide)

Alright, so the other day, I had to change the filter in my Pentek Big Blue water filter system. Let me tell you, it’s not as intimidating as it might seem. I’m no plumber, but I like to think I’m pretty handy around the house, and this is definitely a DIY job.

Gathering Supplies and Prepping

First things first, I made sure to gather everything I needed. Obviously, I got a new filter cartridge. It’s essential to get the right size, so don’t forget to double-check that. I also grabbed the wrench that came with the filter housing. It’s this big plastic thing specifically designed to loosen it. Oh, and a bucket! You’ll definitely need a bucket to catch any water that spills out.

Before I did anything else, I turned off the water supply to the filter. There’s usually a shut-off valve nearby. Just turn that handle, and you’re good. Then, I pressed the pressure release button on top of the housing. You might hear a little hiss as the pressure releases. You don’t want to skip this step, trust me.

Removing the Old Filter

Next, I placed the bucket under the filter housing. Then, using that big wrench, I turned the housing counterclockwise to loosen it. It took a bit of muscle, but it eventually came off. Be careful, it might be filled with water. I carefully poured out the water into the bucket and removed the old, dirty filter cartridge. It was pretty gross, which reminded me why I was doing this in the first place!

Installing the New Filter

With the old filter out, I gave the inside of the housing a quick rinse. Then, I took the new filter cartridge out of its packaging and popped it into the housing. Make sure it’s seated properly, you’ll feel it click into place.

Putting It Back Together

Now, it was time to put everything back together. I carefully screwed the housing back onto the filter head, turning it clockwise this time. I tightened it with the wrench, but not too tight. You don’t want to crack it.

Finishing Up

Finally, I slowly turned the water supply back on. I checked for any leaks around the housing. If you see any, just tighten it a little more with the wrench. I let the water run for a few minutes to flush out any air or loose sediment from the new filter. And that’s it!

Honestly, the whole process took me maybe 20 minutes. It’s really satisfying to do these things yourself and save a bit of money. Plus, now I know my water is clean and fresh again. If you’ve got a Pentek Big Blue filter, don’t be afraid to give it a try yourself next time it needs a change.