How to Winterize a Pool in Texas (Yes, You Still Need To)

A common misconception in Texas is that because our winters are mild, pools don't need winterizing. It's true we don't bury pools under solid covers and drain the plumbing like they do up north — but North Texas pools absolutely need winter prep. Skip it and you'll likely open the spring to a green, stained, expensive mess.

Why Texas pools still need winter care

Even in Greenville and Hunt County, winter brings cooler water, shorter days, and the occasional hard freeze. Cooler water slows everything down — chlorine lasts longer, but algae can still grow, and debris that sits all winter stains the surface. The occasional freeze can crack pipes, damage pumps, and split a filter that still has water in it. A little prep prevents all of it.

Step 1: Balance the water before it cools

Test and balance pH, alkalinity, and calcium hardness before the water cools for the season. Balanced water protects your pool surface and equipment over the winter and makes spring opening far easier. Add a winter algaecide to help prevent slow algae growth during the cool months.

Step 2: Clean everything thoroughly

Brush the walls, vacuum the floor, and skim all debris before letting the pool sit. Organic matter left in the pool over winter is the #1 cause of surface stains and a green spring opening. Clean the filter and backwash or hose it out so it's not sitting clogged for months.

Step 3: Lower the water level (if you cover)

If you use a solid winter cover, lower the water a few inches below the skimmer to prevent water from entering the skimmer and freezing. If you keep the pool running through winter (very common in Texas), you can skip this — just keep the water level up and the pump circulating on cold nights.

Step 4: Protect the equipment from freezes

This is the part that actually matters in Texas. When a hard freeze is forecast:

• Run the pump continuously during freezing temperatures — moving water won't freeze
• If you have a freeze guard/automation, make sure it's set to turn the pump on automatically
• Drain water from the heater, filter, and any above-ground plumbing if you're shutting down
• Remove drain plugs and store them where you'll find them in spring
• Protect exposed pipes with insulation or a cover

A frozen, cracked pump or split pipe is one of the most expensive winter repairs we see — and it's almost always preventable by keeping water moving during a freeze.

Step 5: Decide — run it or cover it?

Many Texas pool owners simply reduce service frequency over winter rather than fully closing the pool. Running the pump a few hours a day and servicing every other week keeps the water clear and the equipment healthy, and you avoid the spring green-pool cleanup entirely. If you'd rather cover it, a mesh safety cover is a good Texas choice — it lets rain through while keeping debris out.

Keep some service through winter

The single biggest mistake we see is homeowners cancelling all service in November and calling us in March to fix a green pool. Even reduced winter service — checking chemistry, emptying baskets, running the pump — saves you the cost and hassle of a spring recovery. It's almost always cheaper to maintain through winter than to recover in spring.

The cheapest winter pool is the one that never stops. A little maintenance through the cool months saves you a green-pool cleanup and a stained surface every spring.

Want help with winter prep?

We offer reduced-frequency winter service across Greenville, Rockwall, Caddo Mills, and Hunt County, and we'll walk you through freeze protection for your specific equipment. Request a free quote and we'll set your pool up for a clean, easy spring.