Sprinkler heads wear out. They crack, they clog, they drift out of alignment, and when they do, you stop watering your lawn evenly. The worst part is that a bad head doesn't always announce itself loudly. You might notice brown patches spreading across your yard, or you might just see one corner of your landscaping looking thin while the rest looks fine. If you've got an irrigation system in Spring, you're relying on those heads to do their job consistently through our heat and humidity. Knowing when to replace them saves you money on your water bill and keeps your turf and plants healthy.
Uneven watering patterns are the first sign
Walk your yard during a watering cycle. You should see consistent spray coverage across the areas the head is supposed to cover. If some spots are soaked and others are bone dry, that head is likely the problem. Sometimes the nozzle gets clogged with sediment or mineral buildup, especially in our hard water. A quick cleaning might fix it. But if you clean it and the pattern is still off, the internal mechanism has probably failed.
Another common issue is head tilt. Over time, soil settles around the base, or the head gets bumped by a mower or foot traffic. When a head tilts, it sprays in the wrong direction, wasting water and leaving parts of your landscape thirsty. If you can adjust it back and it holds, you might be fine for now. But if it keeps tilting back, the threads or base are stripped, and replacement is your answer.
Look for visible damage and leaks
Examine each head closely. Cracks in the body are a death sentence for a sprinkler head. Once cracked, water leaks out around the base instead of through the nozzle, and you lose pressure throughout that zone. You might notice soggy ground right at the head or water pooling there during a cycle.
Check the nozzle itself. If it's chipped, missing a piece, or visibly worn flat, it won't spray properly. Some nozzles are replaceable on their own, which is a cheaper fix than swapping the whole head. But many modern heads are sealed units where you have to replace the whole thing.
Also look for mineral deposits caked on the nozzle. In Spring, our water can be hard. If you see white or tan buildup, try soaking the head in vinegar or using a small brush to clean it. If that doesn't restore a clean spray pattern, the internal filter or diaphragm is probably clogged too, and replacement makes more sense than endless cleaning.
Age and performance decline
Sprinkler heads typically last five to seven years before performance starts dropping noticeably. If you installed your system five or more years ago, you're probably looking at replacing at least a few heads soon, even if they seem to work. Plastic degrades in the Texas sun. Seals dry out. Springs weaken.
You don't have to replace everything at once. Most of the time, you're dealing with one or two problem heads in a system. But if you're replacing one, it's worth inspecting the others in that same zone. If three or four are failing around the same time, you might as well do them all while you're at it.
Pressure problems across the whole zone
If one zone of your system is running weak, the issue might be a failed head creating a leak that's draining pressure from the line. Check that zone carefully. Sometimes you'll find a head that's spraying weakly or not at all, or you'll spot water seeping from the ground near a head. That's your culprit.
When to replace versus when to repair
A single clogged nozzle that cleans up easily: repair. A cracked body or a head that won't stop tilting: replace. Weak spray after cleaning: replace. A head that's simply old and one or two others in the same zone are failing: replace them together.
If you're handy, you can swap out a head yourself if you have the right tools and know which model you're running. But if you're uncertain about your system's design or you want it done right the first time, calling in a professional saves headaches. Getting the new head at the right height and angle matters more than people think.
Getting the right replacement
Bring your old head or take a photo to the local irrigation supply shop. Heads come in different spray patterns, distances, and flow rates. You need a replacement that matches your system's design. Installing a head rated for a different distance or pattern will throw off your whole zone's watering.
Contact Smarter Sprinklers & Drain Systems in Spring if you want a professional inspection of your system. We can tell you exactly which heads need replacing and get the job done so your lawn gets the water it needs.
