For many properties, irrigation systems operate in the background. They are turned on in the spring, adjusted when needed and inspected when something stops working.
While this hands-off approach may work for some, it leaves significant opportunities for contractors to offer customers improvements in water management and system performance. From pressure-regulated sprinklers to cloud-connected controllers, new technology allows contractors to realize modern efficiency standards without needing to replace the entire installation. With a proactive approach, even relatively new systems can benefit from upgrades.
Start With the Foundation
Even a system in good working order can fall short if it was not designed properly.
Before starting any retrofit, the current system should be evaluated for performance or design flaws. Technology upgrades are only effective when the underlying system is properly designed, installed and maintained.
Performance issues such as leaks or leaning and misadjusted sprinklers can leave systems inoperable. These problems are common in minimally maintained systems and should be addressed first.
Even a system in good working order can fall short if it was not designed properly. Professionally designed irrigation systems consider factors like zone separation, precipitation rates, water management and plant water needs. If the current design isn’t working with the landscape, the new technology will only exacerbate those design issues.
By correcting both operational issues and design shortcomings, contractors can establish the foundation for a successful retrofit.
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Focus on High-Impact Retrofit Opportunities
With the proper foundation in place, contractors can begin identifying retrofit opportunities that deliver the greatest benefit to their customers. Pipes and electric valves — the bones of an irrigation system — have long service lives and may not need replacement during a retrofit. Instead, contractors should focus on upgrading sprinklers, spray bodies, nozzles and controllers. These components can provide immediate improvements without major excavation.
One of the most impactful retrofits is to install pressure-regulated spray bodies. Spray heads are typically designed to operate at approximately 30 psi, yet municipal water supplies often deliver significantly higher pressure. When pressure exceeds the recommended range, water distribution becomes less uniform and more water is wasted. Pressure-regulated spray bodies maintain consistent operating pressure and improve overall distribution across a zone.
Another common retrofit is to install check valves, which prevent water from draining out of lower sprinklers when a zone shuts off. This installation helps avoid oversaturation and unnecessary water loss.
Retrofits also provide an opportunity to reconsider how water is delivered across the different zones, so turf, shrubs and other plantings receive appropriate irrigation. Shrubs that receive overhead irrigation can be retrofitted to drip irrigation. Water is slowly applied directly to the root zone, and losses due to wind and evaporation are dramatically reduced.
By combining targeted component upgrades with improvements in how water is applied, contractors can improve efficiency without a rebuild.
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Bringing Irrigation Systems into the Connected Era
Technology upgrades don't correct poorly designed, installed and maintained systems.
In addition to mechanical improvements, irrigation technology is also becoming smarter. Modern controllers now allow users to monitor and manage irrigation systems remotely through cloud-based platforms and apps on their smartphones.
With these systems, controllers can incorporate weather data and automatically adjust watering based on changing environmental conditions. Rather than making adjustments just a few times a year, the smart controllers make real-time changes to increase runtimes during hot, dry periods, and decrease when conditions are cooler or wetter. As a result, customers can maintain healthier landscapes while using water more efficiently.
Sensors and monitoring technologies are also becoming more common additions to retrofit projects. Flow sensors measure the amount of water moving through the system and alert users to abnormal conditions such as leaks or excessive flow. Rain sensors prevent irrigation from running during or immediately after rainfall, avoiding unnecessary watering. Master valves can shut off the water supply when the system is not actively irrigating, helping protect against catastrophic leaks. Together, these technologies allow irrigation systems to detect problems and respond automatically.
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Replacing Versus Retrofitting
While retrofits can improve many systems, there are situations when starting over makes more sense. Major landscape renovations like adding new patios, pools, structures or other features can significantly change how irrigation is distributed across a property. In these cases, the original system layout may no longer match the needs of the landscape.
Additionally, technology upgrades don't correct poorly designed, installed and maintained systems. If sprinkler placement, zoning or coverage patterns are flawed, retrofitting components alone may not deliver the desired results. In those situations, a full redesign will provide a more efficient and reliable long-term solution.
As irrigation efficiency continues to gain attention across the industry, contractors can expect more emphasis on water management standards in the years ahead. In fact, a growing number of states already require pressure-regulated spray bodies for new installations — reflecting a broader shift toward more efficient irrigation practices.
That shift makes retrofitting an important tool for contractors. By upgrading existing systems with more efficient components and smarter controls, contractors can help customers improve performance today while staying ahead of where irrigation standards are headed.
