Pool Filter Cleaning: How Often and Why It Matters
Your filter is the engine of pool clarity. Learn when to clean it, what type you have, and why skipping this service leads to expensive repairs.
Types of Pool Filters
There are three main types: Cartridge filters (most common in Texas — easy to clean, no backwash required), D.E. (Diatomaceous Earth) filters (finest filtration, require periodic D.E. powder refresh), and Sand filters (backwash to clean, replace sand every 5–7 years). Each requires a different cleaning approach.
How Often Should You Clean Your Filter?
Cartridge filters: every 3–6 months for average use pools; every 6–8 weeks for high-use or debris-heavy pools. D.E. filters: backwash when pressure rises 8–10 psi above clean baseline; full disassembly every 6–12 months. Sand filters: backwash when pressure rises 8–10 psi; replace media every 5–7 years.
What Happens When You Don't Clean Your Filter?
A clogged filter reduces water flow, making your pump work harder (leading to motor burnout), reduces filtration efficiency (leading to cloudy water and algae growth), and increases overall chemical demand. Filter neglect is one of the top causes of equipment failure we see in Hood County pools.
Signs Your Filter Needs Cleaning Now
Return jets are weaker than normal. Filter pressure gauge reads 8+ psi higher than your clean baseline. Water is cloudy despite correct chemistry. Pool is taking longer to clear after shocking. Any of these signals means it's time for a filter service.
Professional vs. DIY Filter Cleaning
While homeowners can backwash sand and D.E. filters, a true deep clean — especially for cartridge filters — requires removing the elements, soaking in degreaser, inspecting for tears or cracks, and checking all O-rings and housing seals. A professional filter cleaning every 3–6 months prevents the costly pump and equipment replacements that result from running a pool with a badly clogged filter.
Need Professional Pool Service?
BK Pool Solutions serves Hood County, Granbury, Acton, Tolar, Glen Rose, Lipan, and Stephenville.