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Cold weather can cause serious damage to your irrigation system. When water stays inside pipes, sprinkler heads, and valves, it can freeze and expand. Even a small amount of water can crack pipes or break fittings. That is why winterizing irrigation systems in Lexington, KY, is important before the first freeze.
Each year, before temperatures drop below freezing, irrigation “blowout” becomes a priority. In areas where frost reaches below buried pipes, skipping winterization can lead to costly repairs. Broken lines and damaged sprinkler heads are common problems in spring. Greenland Irrigation & Outdoor Lighting provides professional winterization to help prevent this damage.
Winterizing an irrigation system involves compressed air and pressure control. If done wrong, it can cause injury or damage to the system. For this reason, it is best to hire a trained professional.

Our winterization service is designed for Kentucky’s cold seasons. We take careful steps to remove all water from your system.
Our service includes:
- Inspection of pipes, valves, and sprinkler heads
- Shutting off the main water supply
- Connecting a commercial air compressor after the backflow device
- Using the correct CFM-rated equipment
- Controlling air pressure for polyethylene and PVC pipes
- Clearing zones one at a time
- Draining the backflow device
- Opening test cocks to release trapped water
- Final check to confirm winter protection
Compressed air can cause serious injury if used incorrectly. Flying debris can damage eyes. Our technicians wear proper eye protection and follow strict safety steps during the blow-out process.
Winterization is more than turning off your system. It requires the right tools and knowledge.
The blow-out method uses an air compressor with a specific Cubic Feet per Minute (CFM) rating. A common formula divides the total gallons per minute (GPM) of the largest zone by 7.5 to find the required CFM. Using the wrong compressor size can leave water in the system.
Air pressure must not exceed 50 psi for polyethylene pipe or 80 psi for PVC pipe. Higher pressure can damage pipes. Compressed air should never pass through a backflow device. The compressor must connect to the mainline after the backflow preventer.
Never try to fully charge a holding tank and release air in one burst to make up for low CFM. It can cause system failure. A trained contractor understands how to avoid these risks.
Benefits of professional irrigation system winterization include:
- Prevents frozen and burst pipes
- Protects sprinkler heads and valves
- Reduces costly spring repairs
- Extends system life
- Makes spring start-up easier
- Protects your landscape investment
We follow a clear process to ensure safe and complete winter protection, and afterwards complete a final inspection to ensure your system is ready for freezing temperatures.
We shut off the water supply and attach a commercial air compressor after the backflow device. Pressure settings are adjusted based on pipe type to prevent damage.
Each irrigation zone is turned on, starting with the zone farthest from the compressor. We move slowly toward the closest zone. Each zone runs until no water exits the sprinkler heads. Two or three short cycles are safer than one long cycle.
We stop once the pipes are dry. Blowing air through empty pipes can create heat and cause damage. The compressor is never run without at least one valve open.
We complete a final inspection to ensure your system is ready for freezing temperatures.
Greenland Irrigation & Outdoor Lighting provides winterization of irrigation systems in Lexington, KY, and throughout Central Kentucky. We understand local freeze patterns and frost depth in this region.
Winter weather in Lexington can change quickly. Waiting too long increases the risk of frozen pipes. Scheduling winterization early helps protect your system before the first freeze.

Freezing water can cause serious damage to irrigation systems. Proper irrigation system winterization removes water and prepares your system for winter.
Greenland Irrigation & Outdoor Lighting provides safe, reliable winterization services in Lexington, KY.