Texas winterization is not a Colorado blow-out ritual, and it is not “we don’t freeze.” DFW and the Hill Country see regular northers that crack exposed backflows. Houston sees rare events that still destroy brass when they come. The right prep depends on the metro, not a national checklist.
This guide is written for Texas systems — Blackland prairie clay that heaves after freezes in Dallas, freeze risk in Houston, watering rules from Dallas Water Utilities. It is not a national blog with the city name swapped in. If the hardware is already failing, skip to winterization & spring start-up or call 888-427-5022.
What winterizing a texas sprinkler system actually looks like on a Texas lawn
You are reading this because a freeze is in the forecast, or because last freeze cracked something. Exposed backflow, copper risers, and a timer that will run a zone at 4 a.m. into ice are the risk.
In Dallas the same symptom often traces to freeze-cracked backflows and heaved heads. In Houston we see more freeze and heave. In Boerne (City of Boerne) the program may be legal but the heads are wrong. Do not assume the YouTube fix matches Dallas Water Utilities pressure.
Diagnose before you buy parts
Order of operations matters. Controller and rain sensor first, then the valve box, then heads with water on, then a shovel. Skipping steps is how people replace nozzles when the solenoid is open, or trench for a “root problem” when station 4 is dead at the clock.
- Know the irrigation shutoff before the forecast, not during it.
- Insulate and cover the backflow. Strap the cover.
- In DFW and Hill Country, a blow-out or at least draining exposed piping is reasonable. On the Gulf, covers plus shutoff for the night of the freeze is the usual plan.
- Turn the controller to off, not just “skip today,” if a hard freeze is overnight.
- After the freeze, inspect brass before the first automatic start.
Keep a notepad of zone numbers. The FAQ covers the phone questions we ask so the truck shows up with the right fittings.
Parts that actually last in this climate
Insulated bags, foam covers, and in some DFW homes a proper blow-out. Cheap plastic bags that blow to the next county are not a part, they are litter.
We use matched-precipitation nozzles when we change a head, and we flush grit after a pipe cut so the next screen does not pack. Brand-specific notes live in the blog as well — start with Spring Sprinkler Start-up Checklist for Texas, Sprinkler Emergency Shutoff, Broken Sprinkler Head Repair in Texas.
What it costs in Texas (ranges, not bait)
A pre-freeze cover visit is small if you can still buy covers. A post-freeze brass replacement is not. Emergency after a cracked RPZ is the expensive way to learn.
A written quote before work is the rule. See Winterization & Spring Start-up for what a typical visit includes, and the full service list if more than one system is involved.
DIY vs calling a licensed irrigator
Covers, shutoff, controller off: DIY. Blow-outs with an oversized compressor: how people blow heads off and still leave water in the backflow. If you do not own the right setup, hire it.
Texas licenses landscape irrigators for a reason: backflow, buried electric, and municipal rules. If you are in Dallas, Houston, or Boerne, start on the city page — Dallas, Houston, Boerne — then book.
Mistakes that turn a one-hour job into a weekend
- Assuming Houston never needs this.
- Running the system during the freeze “to keep water moving” on a residential spray system. That is not how this works here.
- Removing the cover in February because it was 75°F on Tuesday. Wednesday will be 27°F.
How this ties to other repairs
Read the backflow article with this. Spring start-up is the sibling piece. Emergency repairs if you already hear water.
Coverage problems after a “fix” usually mean the program was never updated. Pair mechanical work with controller programming and, on clay, cycle-and-soak — not a longer single runtime.
What a good visit looks like on our trucks
We do not start with a parts cannon. Controller and sensor, then the box, then water-on, then dirt if the lateral is the problem. That order is how you avoid replacing a clock for a cut wire, or trenching a puddle that is eight feet from the break. If you want the short phone version, the FAQ is enough. If you want the long version, you are already in it.
Texas jobs change by metro even when the part number does not. Dallas clay hides water. Houston actually freezes brass. Boerne bills you through a different utility window. A national blog that only swaps the city name is how Google ends up indexing one page. We write the local constraint in the article because it changes the repair.
Bring zone numbers, whether the problem is new or slow, whether anyone dug recently, and whether the meter moves when everything should be off. Those four answers route the call — leak truck vs simple head work vs controller power path. Book on contact or call 888-427-5022.
Frequently asked
Do I drain the whole system in Katy?
Usually no. Cover the backflow and watch the forecast. DFW: more yes.
Will the city tell me?
They will tell you about burn bans and watering. The backflow is still your brass.
Need it fixed, not diagnosed over email? Call 888-427-5022 or use the contact page. Same-day windows are for active leaks and stuck-on valves. Everything else we schedule on emergency vs standard priority.
Texas context we will not skip
Gulf clay, Blackland prairie, and Edwards rock do not share a repair script. A wet spot in Houston is not a freeze crack in Dallas, and a SAWS stage day is not a MUD watering window in Katy. We write those constraints because they change the parts on the truck and the program we leave on the clock.
If this article is about a part, still run isolation before you buy a case of that part. If it is about a city, still open the valve box before you trench the first damp patch. If it is about a clock, still measure the solenoid. That order is the whole business.
Call 888-427-5022. Use the contact page if you need a gate code on the ticket. Hub pages: services, service areas, blog.