Amtrol (RP-25HP) 25 GPM Water Pressure Booster Whole House System Pressuriser
Amtrol RP-25HP Pressurizer® 25 GPM Water Pressure Booster System
True whole house pressure boosting with integrated storage tank, low-suction cutoff, and thermal protection for reliable performance in low-pressure municipal water applications
The Amtrol RP-25HP Pressurizer is designed for homes and businesses where municipal water pressure is inadequate. This pre-assembled system boosts incoming pressure by as much as 40 PSI, with a flow range of 3-17 GPM and a 1/2 HP motor rated for continuous operation. The integrated pressure tank minimizes pump cycling, extends motor life, and provides reserve capacity during peak demand.
What makes the RP-25HP a complete pressure solution
Pre-Assembled System
Complete unit with pump, tank, low-suction cutoff, thermal overload protection, and built-in junction box. Ready to install.
Integrated Pressure Tank
Properly sized tank reduces cycling, lowers power consumption, and provides water storage to handle peak demand without motor strain.
Low-Suction Cutoff
Automatic shutoff when inlet pressure drops below minimum threshold protects pump from dry-run damage.
Thermal Overload Protection
Motor protection prevents burnout during extended operation or high-load conditions, ensuring long service life.
True Whole House Capacity
Unlike small inline boosters, the RP-25HP handles 3-17 GPM continuously with 1-1/4" inlet and 1" outlet connections.
Adjustable Pressure Settings
Factory set at 40/60 PSI with 38 PSI pre-charge. Adjustable down to 5 PSI minimum inlet pressure for low-pressure applications.
Technical details for the Amtrol RP-25HP
| Model Number | RP-25HP (Part R4004) |
| Flow Range | 3-17 GPM |
| Motor | 1/2 HP, 115/230V |
| Pressure Boost | Up to 40 PSI |
| Pressure Switch | 40/60 PSI (adjustable) |
| Tank Pre-Charge | 38 PSI |
| Maximum Pressure | 100 PSI |
| Minimum Inlet Pressure | 5 PSI (with adjustment) |
| Inlet Connection | 1-1/4" |
| Outlet Connection | 1" |
| Dimensions (W x H) | 24" x 39" |
| Shipping Weight | 99 lbs |
Where the RP-25HP is used
The Amtrol RP-25HP Pressurizer is designed for municipal water systems where inlet pressure is too low for adequate household or commercial use. Suitable for homes, small businesses, irrigation systems, and multi-fixture applications. The system is designed to run continuously when demand exceeds 3 GPM. Not intended for well water applications unless a large storage tank is provided upstream. Minimum inlet pressure of 5 PSI is required with proper adjustment to pressure switch and tank pre-charge.
Amtrol pressure boosting systems are engineered for reliability in demanding residential and light commercial applications where consistent water pressure is essential.
