Hey everyone, it’s Jake here—your go-to guy for all things pool system gear, and I’m stoked to chat about something that almost every pool owner I meet sleeps on: pressure tank maintenance. If you’ve got a swimming pool, you’ve got a pressure tank (even if you don’t realize it—those little guys keep your pump working smooth, save you cash on energy, and stop that annoying water hammer sound that makes you want to yank your hair out). I’ve been selling pressure tanks for over 10 years now, and let me tell you, the number of people who call me panicking because their tank crapped out 2 weeks after summer started is wild. Most of that? Total avoidable with just a few simple, quick checks every month. Let’s break this down like we’re hanging by the pool with a cold beer—no fancy jargon, just real stuff that works. Pressure Tank
First, let’s get the basics straight so we’re all on the same page. Your pool pressure tank is that cylindrical tank hooked up between your pump and filter, right? It stores pressurized water and air, which evens out the flow so your pump doesn’t kick on and off every 2 seconds (that short cycling is a killer on pump lifespan—bad news for your wallet). Over time, the air inside gets absorbed by the water, or escapes through tiny seals, or gets pushed out if you’re over-pressurizing. When that happens, the tank’s just a big empty water container, not a pressure-balancing pro. That’s when you start noticing weird stuff: low water pressure in your jets, the pump cycling every few minutes, or that loud thud when the pump turns off (water hammer—yikes, that can crack pipes!).
Now, let’s get to the good part: what you actually need to do to keep this tank running like a champ. I split maintenance into monthly checks, seasonal deep cleans, and the annual big-ticket tune-up. None of this takes more than an hour, max—way better than dropping $1,500 on a new pump because you skipped 2 months of checks.
Let’s start with the monthly basics. I tell every customer I work with that this is non-negotiable. First up: check the pressure gauge on the tank. Most pool pressure tanks operate best at 20-28 PSI, but wait—don’t take my word for it, check your tank’s manual (you did keep that, right? If not, shoot me a message and I’ll send a quick cheat sheet). Here’s the trick: you need to check the air pressure in the tank, not just the water pressure. The air valve is on the top of the tank—look for a little cap, just like a tire valve. Grab a tire pressure gauge (the analog ones work better than digital for this, less finicky) and unscrew the cap, press the gauge to the valve, and read it. If it’s below the recommended range (usually 2 PSI lower than your pump’s cut-on pressure), you need to add air—just like a bike tire. If it’s way too high? Open the air valve for 1-2 seconds to let some out, don’t overdo it. Quick heads up: only do this when the pump is OFF and the tank is drained a little—if it’s pressurized, you’ll get a jet of water in your face, and no one wants that mid-barbecue.
Next monthly check: inspect for leaks. Run your hands along the tank’s seams, connections to the pump and filter, and the air valve. Look for damp spots or actual drips. Small leaks at the fittings are easy to fix—just tighten them with a wrench (don’t over-tighten, you’ll crack the tank). If the leak is coming from the air valve, it’s probably just a bad seal—those are like $5, super easy to swap, no plumber needed. I’ve had customers try to patch tank leaks with epoxy, and 9 times out of 10 that fails in a month. Better to catch small leaks now than have a flood in your equipment room when you’re hosting a pool party.
Then there’s the water level check. If your tank has a sight glass (that little window on the side), glance at it when the pump is running. The water level should sit about halfway up the glass. If it’s way higher, that means there’s too much water in the tank and not enough air—your pressure is off, and the pump is working harder than it needs to. If it’s way lower, the air is escaping too fast, which means a seal or the bladder (wait, most of the newer tanks are bladder-style, right?) is bad. Hold up—bladders are a big part of this, let’s talk about them. Bladder tanks have a rubber inner bladder that separates air and water, which makes them way more efficient than the old ones that had air and water mixing. Bladders don’t last forever—usually 5-7 years, depending on how hard you run your pump. If you notice the pressure is dropping fast, or the tank is making gurgling sounds when the pump turns on, that’s probably the bladder going. I sell replacement bladders, and swapping one is way cheaper than a whole new tank—just saying.
Now, seasonal maintenance—this is for pre-summer kickoff and end-of-winter shutdown, super important if you live in a place where pools freeze. Pre-summer is when you want to do a deep clean, not just a quick check. First, turn off the pump, drain all the water out of the tank—usually there’s a drain valve at the bottom. Once it’s empty, wipe down the inside with a mild bleach solution (1/4 cup bleach per gallon of water) to get rid of any algae or mineral buildup that’s been hanging out all winter. Scrub the inside gently with a soft brush—don’t use anything abrasive, it can scratch the tank or bladder. Let it dry completely before you refill it and repressurize. For winter shutdown, if you don’t winterize the tank properly, the water inside can freeze, expand, and crack the tank or bladder. Here’s what I tell people: after draining the tank, leave the air valve open, disconnect it from the plumbing, and store it in a dry, temperature-controlled spot if possible. If you have to leave it outside, make sure it’s completely drained, wrap it in a tarp, and elevate it off the ground so water can’t pool around it. I’ve seen so many tanks busted from frozen water, and it’s totally preventable.
Now, the annual tune-up—you should call a pro once a year, even if you’re a DIY kind of person. A pro can do a more detailed pressure test to check for leaks you might miss, inspect the bladder for small tears that turn into big problems, check the electrical connections to the pressure switch (that’s the thing that tells your pump when to turn on and off—if that’s bad, your short cycling will get way worse), and flush out any mineral buildup that’s clogging the tank. Pro tip: ask the pro if they can check your tank’s pressure while it’s under full load, not just idle pressure. That gives a way better idea of how it’s actually working when the pool is running.
Wait, let’s address some common mistakes I see customers make, because these drive me nuts. First: over-pressurizing the tank. I’ve had people add 20 PSI thinking more is better, but no—too much pressure strains the bladder, the seals, and even the pump, leading to premature failure. Stick to the recommended range, that’s non-negotiable. Second: ignoring water hammer. That loud thud isn’t just annoying—it’s breaking your pipes from the inside out. If you hear that, check your tank pressure first 9 times out of 10 that’s the fix, not calling a plumber. Third: waiting until something breaks to do maintenance. I had a customer last year who waited until his tank cracked mid-July, and he had to wait 3 days for a new tank because I was backlogged, and his pool was a mess. Don’t be that guy.
If you’re thinking “wait, my tank is 10 years old, should I replace it?” Here’s the call: if it’s working fine, the pressure is consistent, no leaks, then no need. If you’re constantly adding air, the bladder is torn, or it’s making weird noises every time the pump runs, then it’s time. I sell a ton of tanks, and I always recommend getting a bladder-style tank over the old ones with mixed air and water—they last longer, are easier to maintain, and save you more energy because they balance pressure better.
At the end of the day, pressure tank maintenance isn’t rocket science. It’s just a few 10-minute checks every month, a deep clean twice a year, and an annual pro tune-up. Skipping it means higher energy bills, shorter pump lifespan, and expensive repairs in the middle of summer when you just want to swim.
If you’ve got questions about checking your pressure, swapping a bladder, or even need a new tank (I’ve got sizes for every pool, from small backyard to commercial), don’t hesitate to reach out. I’m here to help—no pushy sales stuff, just real advice from someone who’s been in the game for years. Just shoot me a message and we can chat about your specific pool setup.
Now, go check your tank right now—you’ll thank me later when your summer is smooth, no weird noises, no plumbing floods, just pool time. Enjoy the water!
Submersible Sewage Pump References:
- National Swimming Pool Foundation. (2022). Basic Pool Equipment Maintenance Guide.
- Pressure Tank Manufacturers Association. (2021). Residential Pressure Tank Care and Troubleshooting Manual.
- U.S. Department of Energy. (2020). Energy Efficiency Tips for Swimming Pool Systems.
Taizhou Hanner Machinery Co., Ltd.
Taizhou Hanner Machinery Co., Ltd. is one of the leading pressure tank manufacturers and suppliers in China. We warmly welcome you to wholesale hot selling pressure tank from our factory. All customized products are with high quality and competitive price.
Address: Southeast Industrial Accumulation, Songmen Town, Wenling City, Zhejiang, China
E-mail: kathy@cnhanner.com
WebSite: https://www.hannerpump.com/
