How Often Should Pool Filters Be Replaced?

There’s nothing quite like looking out at your pool on a warm summer morning. Maybe you’re drinking your coffee and looking out at your yard, and that crystal clear pool is calling your name!

Crystal clear pool water is something that not only makes your pool look amazing, it also means that it’s clean and safer to swim in. In order to have that, though, the proper filtration is key. The problem is, filters don’t last forever, and if you’re new to filters, this might all feel a little bit overwhelming. Whether you’re new to pool filters or a more seasoned pool owner, we’ve compiled all of the information you need to understand how often pool filters need to be replaced.

The short answer? It really depends on your filter type. So, let’s talk more about those types, how to know when it’s time to change out your pool filter, how to expand the lifespan of your filter, and more.

Understanding Your Swimming Pool Filtration System

So, first of all, let’s talk about three popular filter types: sand filter, cartridge filters, and diatomaceous earth filters (D.E Filters). We’ll talk about how each one works and how long pool filters last, depending on the filter type.

Sand Pool Filters

• How sand filters work: Sand filters are made with pool-grade sand. So, your pool water gets pushed through the sand filter, and it takes the debris and particles out of the water. The clean water then gets pushed back into your pool.

• How long should a pool filter last, if it’s a sand filter? If you properly maintain it, the sand can last for around 5-7 years. The tank filter may last even longer if it’s in good condition.

Cartridge Pool Filters

• How Cartridge Pool Filters Work: These pool filters almost resemble folded-up or pleated fabric. The pool water runs through it, and the debris gets caught in the filter. Then the water is pushed back into the pool.

• How long should a pool filter last, if it’s a cartridge filter? These last around 2-4 years, depending on how well they are maintained. If it’s not well-taken care of, it will deteriorate much faster.

Diatomaceous Earth (D.E.) Pool Filters

• How A Diatomaceous Earth Filter Works: These filters employ a powder made from fossilized plankton that coats a grid. The water is run through the filter and traps tiny particles.

• How long should a pool filter last, if it’s a Diatomaceous Earth filter? If you take really good care of this filter, it can last 5-7 years.

How to Know It’s Time to Replace Your Filter

Now that we’ve talked about the filter types, it’s important to understand the signs to look for when you’re worried about pool cartridge filter replacement. The short answer is that it depends a lot on the filter itself. So, we’ve broken it down to make it easier:

1. Signs You Need to Replace Your Sand Filter: If your pool water is still cloudy after backwashing, you’re seeing increased pressure readings, a lot of debris in the pool, or sand is clumping and coming out into the pool.

2. Signs You Need to Replace Your Cartridge Filter: If the filter itself looks ragged (i.e. cracked or frayed), you’re cleaning it out but your water is still cloudy, or the pressure gauge is spiking even after you clean it.

3. Signs You Need to Replace Your Diatomaceous Earth Filter: Watch for cloudy water, debris, or DE in your pool, etc.

Generally, cloudy water, weird noises, or any appearance of damage to any of the filter types means pool cartridge filter replacement is needed!

How Pool Usage and Environment Affect Filter Life

So, you probably want your pool filter to last as long as possible. That’s why it’s also important to understand how pool usage and the environment around the pool can affect the lifespan of your filter. Well, for starters, if you have a lot of people in your pool frequently, that can cause more wear. Letting pets swim in the pool can also have this effect.

In addition, the weather can strain filters as well. A lot of pollen, storms, wind, etc., can cause more debris in the pool and therefore make the filter need to work harder to keep the pool crystal clear. This will also be affected if your pool is only open during certain seasons or a year-round pool.

Basically, any type of heavy debris will go through the filter and can affect it. This doesn’t mean you shouldn’t use your pool. It’s just an important thing to keep an eye on while monitoring your filter.

Expert Tips to Extend Your Filter’s Life

If you want to make your filter last as long as possible, the biggest thing is to keep it clean and to maintain it properly. Keep an eye on O-rings, gaskets, or manifolds and replace them before they fail. This all depends on the filter type. So, be sure to consult the manufacturer or an expert before cleaning them or replacing parts. Pool filters should not be ignored, though. The next most important thing is to make sure you’ve paired the right size filter to your pool’s capacity. Having the wrong-sized filter can result in issues. Lastly, don’t ignore your pressure gauge reading or cloudy water. These things can be warning signs of issues. So, it’s best to address them as soon as you see them.

Why Quality Filters (Like Vita Filters) Make a Difference

Look, like most things in life, not all pool filters are created equal. If you’ve ever dealt with flimsy cartridges or mystery-brand parts that barely lasted a season, you already know that quality matters. That’s where Vita Pool Filters comes in.

Vita Filters are built to last. From durable materials that hold up in real-life pool conditions to reliable performance you can count on day in and day out, investing in a high-quality filter means fewer headaches, better water clarity, and a longer-lasting system overall.

Hopefully, you’re feeling a little more comfortable with pool filters. The key is to know your filter type so you can easily watch for wear and tear, so you can replace it as soon as it starts struggling, because, truthfully, no one wants a cloudy pool.  

Need help figuring out your pool filter and if it needs to be replaced? Contact us at Vita Pool Supply for expert advice and high-performance replacement filters.