Cloudy water that won't clear no matter how much you brush or shock? Nine times out of ten it's the filter. Redzone Pools repairs, cleans and replaces pool filters across Cypress and the Greater Houston area.
Your pump moves the water, but your filter is what actually cleans it. When it's torn, clogged or cracked, dirt and fine debris slip straight back into the pool — so no amount of chemicals or brushing gets you that clear blue you're after. If your water's hazy, your pressure gauge is reading high, or you're backwashing constantly, the filter is the first place to look.
Redzone Pools services all three filter types — cartridge, D.E. and sand — across Cypress, Katy, Sugar Land and the Greater Houston area. We'll tell you whether a clean, a part, or a full replacement is the right call, and we won't upsell you a new tank when a $60 element would do.
Each filter type fails a little differently. Here's what we handle for each.
Element cleaning and replacement, torn or collapsed cartridges, cracked manifolds and worn tank o-rings.
Grid replacement, D.E. powder in the pool (a sign of torn grids or a cracked manifold), and backwash valve repairs.
Sand changes, channeling and sand-in-the-pool problems, plus multiport and backwash valve rebuilds.
A filter rarely fails all at once — it tells you first. Call us if you're seeing any of these:
• Cloudy or hazy water that won't clear with chemicals
• High pressure on the gauge, or pressure that climbs fast after cleaning
• Constant backwashing just to keep flow up
• D.E. powder or sand blowing back into the pool
• Water leaking from the tank band, valve or o-rings
Catch it early and a filter repair is quick and cheap. Ignore it and you're running your pump against a clogged filter — which shortens the pump's life too.

We service filters from Pentair (Clean & Clear, Quad D.E., FNS), Hayward (SwimClear, ProGrid, Pro Series) and Jandy, among others. A filter problem often travels with a pump or salt system issue — see our full pool equipment repair service, and we'll sort the whole pad in one visit.
Nine times out of ten it's the filter. A torn cartridge, ruptured D.E. grid, or channeled sand lets fine particles pass straight back into the pool, so no amount of chemicals clears it. We find the failure and fix it.
Rinse a cartridge every few months and plan to replace the elements every 2–3 years; D.E. grids and sand last longer but eventually break down. If pressure climbs fast right after a cleaning, the media is done.
D.E. filters the finest, cartridge is low-maintenance and common on newer pools, and sand is the simplest but least fine. We service and repair all three and can advise what fits your pool.
A torn cartridge or a set of D.E. grids is usually a quick, inexpensive repair. A cracked tank, split manifold or badly corroded valve is when replacement makes more sense. We'll tell you honestly which yours needs.
High pressure means restricted flow — usually a dirty or clogged filter that needs cleaning. If it spikes again quickly after cleaning, the cartridge or media has reached the end of its life.
Pentair (Clean & Clear, Quad D.E., FNS), Hayward (SwimClear, ProGrid, Pro Series), Jandy and more — across Houston, Cypress, Katy, Sugar Land and the Greater Houston area.
Tell us what your water and pressure gauge are doing and we'll get you a straight answer and a fair quote, usually same day.