Granite State Outdoor Systems
Professional Irrigation Systems in Southern New Hampshire
Professional irrigation designed around your property — not a one-size-fits-all system. Granite State Outdoor Systems provides professional irrigation installation, service, repair, maintenance and system upgrades throughout Amherst and Southern New Hampshire.
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A properly designed irrigation system starts long before pipe goes into the ground. GSOS evaluates the property, planting areas, turf, available water supply, elevation changes and other site conditions before developing the system layout.
Systems are designed with proper head placement and coverage in mind while keeping different watering requirements separated whenever practical. The goal isn't simply to make the lawn wet — it's to create an irrigation system that operates efficiently and delivers water where it's actually needed.
- Complete irrigation system design and installation
- Sprinkler head and zone layout
- Turf and landscape-bed irrigation
- Controller installation and programming
- Valve and control systems
- System testing and adjustment
- Customer walkthrough and system operation
Irrigation Repairs & Troubleshooting
An irrigation system can still operate while performing poorly. Broken or damaged sprinkler heads, leaking valves, wiring problems, poor coverage, pressure issues and controller problems can all lead to wasted water and unhealthy turf. GSOS provides troubleshooting and repairs with an emphasis on identifying the actual cause rather than simply replacing parts.
Spring Startups
New Hampshire winters require irrigation systems to be shut down seasonally. When spring arrives, GSOS can professionally bring the system back online, inspect its operation and identify problems that may have developed since the previous season.
A spring startup can include activating the water supply, checking individual zones, inspecting sprinkler heads, identifying leaks or damage, adjusting coverage and programming the controller for seasonal operation.
Irrigation Winterization
Proper winterization is one of the most important services for an irrigation system in New Hampshire. Before freezing temperatures arrive, compressed air is used to remove water from the irrigation system to help protect piping, valves, sprinkler heads and other components from freeze damage.
System Upgrades & Add-Ons
An existing irrigation system doesn't always need to be completely replaced. Older systems can often be improved through strategic upgrades, repairs and additions.
- Additional irrigation zones
- Additional sprinkler heads
- Coverage improvements
- Controller upgrades
- Smart/Wi-Fi controller upgrades
- Rain and weather sensors
- Valve replacement
- Sprinkler head upgrades
- System modifications following landscaping changes
Irrigation Design & Consultation
Planning a landscape project, purchasing a home with an existing irrigation system or simply unsure what your property needs? GSOS can evaluate the property and discuss practical options before work begins. Recommendations are based on the property and the system — not on selling equipment that isn't necessary.
Why Choose Granite State Outdoor Systems?
GSOS was built around a straightforward philosophy: quality over quantity.
Owner Tyler Green began working in the irrigation industry for a family business alongside his father, learning the trade from the ground up. That hands-on experience includes irrigation installation, troubleshooting, wiring, controllers, plumbing, system layout and maintenance.
The objective is simple: build and maintain irrigation systems correctly, communicate clearly with the property owner and stand behind the work performed.
Frequently Asked Questions
How much does an irrigation system cost in New Hampshire?
The cost of a new irrigation system depends on the size and layout of the property, number of zones, available water supply, landscape requirements and site conditions. GSOS evaluates each property individually and provides an estimate based on the system actually needed rather than using a one-size-fits-all price.
When should I start my irrigation system in New Hampshire?
In Southern New Hampshire, irrigation startups can begin as early as the end of March and continue through the end of April into early May, depending on what Mother Nature has in store for us. During a professional spring startup, GSOS activates the system, operates each zone, checks for leaks or winter damage, inspects sprinkler heads, evaluates coverage and makes necessary adjustments before the system returns to regular seasonal operation.
When should an irrigation system be winterized in New Hampshire?
Irrigation winterization in Southern New Hampshire typically begins toward the end of September and continues through the end of October. There are always some stragglers, and those systems should ideally be completed before the end of November, weather permitting. Scheduling ahead helps ensure the system can be properly blown out and prepared before winter conditions settle in.
Can my existing sprinkler system be upgraded?
Yes. Many irrigation systems can be improved without replacing the entire system. Depending on its condition and design, upgrades may include additional heads or zones, coverage corrections, new valves, updated sprinkler heads, smart controllers, weather sensors and modifications following changes to the landscape.
Should I repair my irrigation system or replace it?
That depends on the condition and design of the existing system. A system with isolated broken components may only require repairs, while an older system with widespread leaks, poor coverage, obsolete components or significant design problems may benefit from larger upgrades.
Are smart irrigation controllers worth upgrading to?
For many properties, they can be. Modern Wi-Fi and weather-based controllers can make scheduling easier and provide greater control over irrigation operation. Whether an upgrade makes sense depends on the existing system, property and how the owner wants to manage it.
Can irrigation be installed in an established lawn and landscape?
Yes. Irrigation systems can be installed on existing properties. System design and installation methods are planned around the existing lawn, landscaping, hardscaping and other site conditions with an emphasis on minimizing unnecessary disturbance.
Why should my irrigation system have a rain sensor?
If it's raining — or the property just received substantial rainfall — your irrigation system generally doesn't need to be watering at the same time. A properly functioning rain sensor can temporarily prevent scheduled irrigation after sufficient rainfall, helping reduce unnecessary watering and water waste. GSOS can inspect existing rain sensors and discuss adding or upgrading rain-sensing equipment when appropriate. Seeing sprinklers running during a rainstorm shouldn't be considered normal operation. An irrigation system should respond intelligently to the conditions around it.
What should I look for when comparing irrigation companies in NH?
When comparing irrigation companies in NH, homeowners should consider more than the initial installation price. System design, head placement, coverage, component selection and long-term serviceability all affect how well an irrigation system performs.
Serving Amherst & Southern New Hampshire
Granite State Outdoor Systems is based in Amherst, New Hampshire and serves Milford, Merrimack, Londonderry, Wilton and surrounding Southern New Hampshire communities.
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