1. More than a blowout: start with the controller
Ask most people what sprinkler winterization means and they will say blowing out the lines. That is the central step, but a system that has been properly put away for a Richmond or Fredericksburg winter has had several other things done too. If you are comparing sprinkler winterization near me, this checklist is what to hold each company to - and what to check if you winterize yourself.
A controller left in automatic mode will try to run its schedule all winter. On a drained system that means valves cycling against empty lines; on a system with any water left in it, it can push fresh water into pipe just before a cold night.
- Set the controller to rain delay or off for the season.
- Confirm the seasonal shutoff is closed, so the controller has no water to work with even if it is switched on by mistake.
- Leave the programming in place if you can. Smart Wi-Fi controllers usually keep their schedule through an off-season.
If you have a rain sensor or soil moisture sensor, leave it connected. If it was damaged over the summer, note it now so it can be dealt with at the spring start-up.
2. The backflow preventer
The backflow assembly usually sits above ground, often against the house, with water trapped inside its body between two closed shutoffs. That is why it is so often the first casualty of a hard freeze, and why Heritage Irrigation calls it the most expensive single freeze casualty it sees.
- Close both the upstream and downstream shutoffs.
- Open the test cock ports and confirm the body is fully drained.
- If your locality requires an annual certified backflow test and it has not been done this year, the winterization visit is a convenient time to do it and document it. Heritage Irrigation lists the test at $69.95 on its own.
3. Valves, pipes and heads
This is the blowout itself, and the details decide whether it works:
- Each zone purged individually with compressed air, not all at once.
- Multiple passes per zone - Heritage typically runs two to three cycles - to clear low points, grade changes and lateral ends.
- Compressor capacity matched to the system. A small compressor on a large system leaves water behind.
- Lower operating pressure on older systems. Some pre-1990 systems in established Richmond neighborhoods use polyethylene pipe instead of PVC, and older valve bodies and fittings have less tolerance.
Clay soils, common across Chesterfield and the Richmond area, make this step matter more. Where sandy soil might let residual water drain away from a joint, clay holds it there.
Valve boxes deserve a look while the air is running. Standing water in a valve box, or a valve that keeps passing water after its zone is closed, points to a leak or a worn part. Freeze expansion inside a flooded valve box can also stress the wire connections that run the valves, which shows up in spring as zones that will not come on.
4. Pumps and special cases
Systems fed from a pond, well or lake need extra work: draining the pump body and volute, sometimes removing and storing the impeller, draining the suction line and preparing the pressure tank. If your system is pump-fed, say so when you book so the visit is planned for it.
Systems with master valves, flow sensors, remote valve groups or several manifolds also need a technician who knows how to purge them, rather than a generic blowout.
5. A condition report, and planning for spring
The last item is easy to skip and pays off in April. While the system is running under air, a technician can see a lot: heads that do not seal, valves that are slow, a backflow assembly near the end of its life. Heritage Irrigation documents which zones were purged, the backflow condition and any component issues, and reviews findings with you before leaving.
That record does two things. It tells you whether anything needs repair before the spring start-up, and it gives the spring technician a baseline. A Spring Start-Up - pressurizing the lines, inspecting for leaks, adjusting heads and programming the controller - is listed at $79.95, the same as winterization.
Both are included in every Heritage Irrigation annual plan, starting with Essential at $149.95 a year. If you want the backflow test included too, that starts at the Enhanced Plus tier.
Timing and coverage
For the Richmond area, Heritage recommends booking in September or early October; the first hard freeze typically arrives in November, with October cold snaps possible. If a freeze has already passed, call anyway - the winterization and a freeze-damage check can be done in one visit.
The company is based in Ashland and winterizes systems across the Richmond metro, Midlothian, Fredericksburg, Stafford and Spotsylvania, Williamsburg with James City and York counties, and Lancaster and Northumberland in the Northern Neck.