Did you know that swimming pool filter failure rates can be as high as 50% under extremely hot temperatures like those found in Phoenix, Arizona and Maricopa County? A improperly functioning swimming pool filter can also lead to sky-high energy bills, murky water, and even expensive-to-repair damage to your pool equipment. That’s why it’s important to know what signs to look for, when trying to determine the best time to replace your swimming pool’s filter. First, let’s understand the type of pool filter you have.

Types of Pool Filters

There are three main types of pool filters: sand, cartridge, and diatomaceous earth (DE).

Sand Filters

These are popular for their low maintenance. They typically last around 5 to 7 years.

Cartridge Filters

Known for better filtration, they can last anywhere from 3 to 5 years.

DE Filters

While they filter effectively, they usually have a lifespan of 5 to 7 years.

Please note, that in Phoenix Arizona’s intense heat, expect these lifespans to decrease slightly.

Signs of a Failing Swimming Pool Filter

Increased Pressure

If the pressure gauge is consistently higher than normal, this indicates a clogged filter.

Cloudy Water

If your pool water is cloudy despite regular cleaning, it’s a probable sign of filter failure.

Reduced Filtration Efficiency

If debris isn’t being cleared properly, your filter may need attention.

Filter Cleaning and Maintenance

Regular cleaning is vital for prolonging filter life. In Phoenix, where the water can be mineral-rich, maintenance should be conducted every month. Backwashing sand filters and cleaning cartridge filters will help optimize performance. Keeping the filter clean can also prevent future damage.

Phoenix’s Climate and its Impact on Pool Filters

Extreme Heat and Sun Exposure

Phoenix is known for its brutally hot summers, with average temperatures often exceeding 100°F. This extreme heat can degrade filter materials faster than in cooler climates, leading to early replacements.

Dust and Debris

The frequent dust storms in Phoenix can introduce a significant amount of debris to your pool. Reports suggest that Phoenix witnesses over 20 dust storms annually. This means your filter works harder, which can shorten its lifespan.

Water Chemistry

Proper water chemistry is crucial. For instance, high chlorine levels can deteriorate filter media. Poor balances can lead to a host of problems, including fading effectiveness and potential damage to the filter.

Determining When to Replace Your Pool Filter

Pressure Gauge Readings

Learn to read your pressure gauge. If it remains above the normal range (typically between 8-12 psi for most filters) after cleaning, your filter may be clogged and needs replacement.

Visual Inspection

Conduct a visual check. Look for cracks, leaks, or any visible signs of wear. Small imperfections can escalate if not addressed promptly.

Water Clarity Test

If your pool remains cloudy after performing regular cleaning, that’s a red flag. A well-functioning filter should provide clear water, and persistent murkiness indicates potential filter failure.

Cost vs. Benefit Analysis: Repair vs. Replacement

Repair Costs

Repairing pool filters can be tempting. Typical costs include:

• Cleaning: $50 to $150 depending on filter type.
• Media replacement: $100 to $300.

However, these costs can add up, especially if the filter continues to fail.

Replacement Costs

Investing in a new filter can range from $200 to $1,000, depending on type and size. Some budget-friendly options may initially seem appealing but could incur higher maintenance costs over time.

Long-Term Savings

Replacing your filter on time can save money in the long run. Preventing further damage to pool equipment and maintaining efficient energy use can outweigh initial replacement costs.

Choosing the Right Replacement Filter

Filter Size and Type

Select a filter that matches your pool size. A 20,000-gallon pool may require a filter with a flow rate of 30 gallons per minute.
Filter Media Selection

Each filter type has its pros and cons:

• Sand Filters: Easy to maintain, cost-effective.
• Cartridge Filters: Better filtration, but more frequent cleaning needed.
• DE Filters: Superior clarity, but more complicated to maintain.

Our Recommendations

As a leading pool repair professional in Goodyear, Arizona, we usually suggest choosing the best quality filter you can afford, for our arid climate.

If you would like to learn more about how to recognize the signs of swimming pool filter failure, and knowing when to replace your pool filter, contact Accent Pool/Spa Service for professional pool repair in the Phoenix metro area.