Backwashing Basics: How to Keep Your Pool Filter Running Strong

Owning a pool is all about enjoying crystal-clear water that’s perfect for swimming, relaxing, and having fun. But behind the scenes, there’s a lot of work that goes into keeping that water clean and healthy. One of the most important tasks is taking care of your pool filter—and that includes backwashing.

At Infinity Pool Solutions, we believe that understanding the "why" and "how" of backwashing can make pool maintenance easier and keep your pool in tip-top shape. Let’s dive into what backwashing is, why it’s important, and how often you should do it to keep your pool sparkling clean.

What is Backwashing?

Your pool filter is like the lungs of your pool—it removes dirt, debris, and tiny particles from the water to keep it clean. Over time, all that debris builds up in the filter, making it harder for water to pass through. That’s where backwashing comes in.

Backwashing is a simple cleaning process that reverses the flow of water through your filter. Instead of water flowing in and getting filtered, it flows backward, flushing out the dirt and debris that’s trapped inside. Think of it as giving your filter a deep clean so it can keep working effectively.

Why is Backwashing Important?

Your pool filter works hard to keep your water clean, but it can only do its job if it’s not clogged with dirt. Here’s why backwashing matters:

1. Keeps Your Pool Water Clean

A clogged filter can’t remove debris properly, which can lead to cloudy or dirty water. Backwashing restores your filter’s efficiency, ensuring your pool stays clear and inviting.

2. Prevents Equipment Damage

When a filter is clogged, your pool pump has to work harder to push water through. Over time, this extra strain can damage the pump and other equipment. Regular backwashing reduces the workload, extending the life of your system.

3. Maintains Proper Water Circulation

Good water circulation is key to distributing chemicals evenly and preventing algae growth. A clean filter ensures water flows freely, keeping your pool balanced and healthy.

4. Saves You Money

Regular backwashing helps your filter and pump last longer, reducing the need for costly repairs or replacements.

How Often Should Your Pool Be Backwashed?

The frequency of backwashing depends on several factors, including the type of filter you have, how often you use your pool, and the surrounding environment.

1. Type of Filter

There are three common types of pool filters:

• Sand Filters: These need to be backwashed about once a week or whenever the pressure gauge reads 8-10 psi above normal.

• DE (Diatomaceous Earth) Filters: These require backwashing less frequently, usually every 1-3 months or when the pressure gauge rises by 8-10 psi. After backwashing, you’ll need to add more DE powder to the filter.

• Cartridge Filters: These aren’t backwashed. Instead, you clean the cartridges manually by hosing them off, usually every 1-2 months.

2. Pool Usage

If your pool sees heavy use, such as during pool parties or a busy summer, the filter will collect more debris and need to be backwashed more often.

3. Environmental Factors

Pools near trees, dusty areas, or construction zones collect more debris. If you notice a lot of dirt or leaves in your pool, you might need to backwash more frequently.

4. Check the Pressure Gauge

Your filter’s pressure gauge is your best guide. When the pressure rises 8-10 psi above the normal operating level, it’s time to backwash.

Why Choose Infinity Pool Solutions for Filter Maintenance?

At Infinity Pool Solutions, we’re passionate about keeping your pool water clean, safe, and stress-free. Our professional services include regular maintenance, filter inspections, and backwashing assistance to ensure your pool runs smoothly all year long. Backwashing is just one part of pool care. We also take care of cleaning your skimmer and pump baskets and regularly testing your water chemistry. 

The Bottom Line

Backwashing is one of the easiest ways to keep your pool filter running efficiently and your water looking amazing. By sticking to a regular backwashing schedule and keeping an eye on your filter’s pressure gauge, you’ll avoid many common pool problems and save money in the long run.

If you’re unsure about your filter’s maintenance needs or want to leave the hard work to the pros, we're here to help. Give us a call today and let’s keep your pool crystal-clear together!