Grundfos SCALA2 Water Booster Pump w/ NEMA 5-15P Plug (115V)
Product Highlights
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115V
145 PSI
24 Month from Date of Delivery & 30 Month from Manufacturing Date Warranty
Description
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Note: Warranty is 24 months from the date of delivery and 30 months from the manufacturing date
With the new GRUNDFOS SCALA2 water booster pump, perfect water pressure is finally available in an all-in-one unit. Now you can enjoy the luxury of a perfectly comfortable shower any time of day – even when your family is using the many other taps in your home, for instance in the bathroom, the kitchen and the garden. And the SCALA2 is so compact and quiet, you won’t even know it’s there.
SCALA2 comes equipped with intelligent pump control, which means that it automatically adjusts operation to deliver the water pressure you like. The integrated sensor detects if the inlet pressure varies or if there are several taps open and immediately tells the pump to boost the pressure. And it happens so fast that you won’t notice any change in your water pressure at all
Features
- Intelligent pump control
- Water-cooled, permanent magnet motor
- Dry running protection
- Self-priming
- User friendly control panel
- Outdoor-ready
Specs
| Type: |
Booster Pump |
|---|---|
| Voltage: |
115V |
| Max Pressure (PSI): |
145 |
| Max Head (Ft): |
148 |
| Warranty: |
24 Month from Date of Delivery & 30 Month from Manufacturing Date |
| Phase: |
1 |
| Frequency: |
60 Hz |
Grundfos is the largest pump manufacturer in the world, based in Denmark, with more than 19,000 employees globally.
The annual production of more than 16 million pump units, circulator pumps (UP), submersible pumps (SP), and centrifugal pumps (CR). Grundfos also produces electric motors for the pumps as well as electric motors for separate merchandising. Grundfos develops and sells electronics for controls for pumps and other systems.
Here's supplementary content for the Grundfos SCALA2 Water Booster Pump page — insert after the "Specs" table, before the Grundfos company paragraph:
Understanding Low Water Pressure — And How the SCALA2 Solves It
Common Causes of Low Home Water Pressure
Before installing a booster pump, it helps to understand what typically causes low pressure in the first place:
- Municipal supply limitations — some areas simply have lower incoming pressure from the water main, especially at higher elevations or the end of a distribution line
- Well water systems — homes on private wells often experience pressure drops as the well tank cycles or during high-demand periods
- Multi-story homes — pressure naturally decreases as water is pushed to upper floors, since gravity works against the flow
- Simultaneous fixture use — pressure drops noticeably when multiple showers, faucets, or appliances draw water at the same time
- Long distribution runs — larger homes with extensive plumbing runs from the main supply can experience friction loss over distance
The SCALA2 addresses all of these scenarios by actively boosting pressure at the point where your home's plumbing system begins, rather than relying entirely on whatever pressure arrives from the source.
How Intelligent Pump Control Actually Works
Unlike older, simpler booster pumps that run at a single fixed speed, the SCALA2 continuously monitors pressure through an integrated sensor. When it detects a drop — whether from a single tap opening or several fixtures running simultaneously — it automatically adjusts pump speed in real time to maintain your target pressure. This happens quickly enough that you won't notice the fluctuation that would otherwise occur, whether you're the only one using water or the whole household is showering, running the dishwasher, and watering the garden at once.
Built-In Protection Features
- Dry running protection — automatically shuts the pump down if it detects no water is present, preventing damage to the motor from running dry (a common failure point in less sophisticated pump designs)
- Water-cooled, permanent magnet motor — uses the water passing through the pump itself to help manage motor temperature, contributing to quieter, more efficient, and longer-lasting operation
- Self-priming — the pump can draw water into itself without manual intervention, simplifying both initial installation and recovery after maintenance or a dry-run shutdown
Outdoor-Ready Design
Unlike booster pumps that require strict indoor, climate-controlled installation, the SCALA2 is rated for outdoor placement — offering more installation flexibility for homes where interior mechanical space is limited, such as placing it near an exterior water entry point or in an unheated garage or utility area (with appropriate freeze protection considerations for Illinois winters).
Compact, Quiet, All-in-One Design
Because the SCALA2 integrates the pump, pressure sensor, and control electronics into a single compact unit, it avoids the bulkier footprint and more complex plumbing of older multi-component booster systems — while its quiet operation means it can be installed in mechanical closets or utility rooms without becoming a noticeable household noise source.
Is a Booster Pump Right for Your Home?
Consider the SCALA2 if you experience:
- Weak shower pressure, especially on upper floors
- Noticeable pressure drops when multiple fixtures run simultaneously
- Inconsistent water pressure throughout the day, particularly with well water systems
- A larger home where water pressure diminishes significantly by the time it reaches distant fixtures
Professional Installation Matters
Because the SCALA2 integrates directly into your home's main water supply line and includes both electrical and plumbing components, correct installation is essential for both performance and the pump's protective features to function properly. Our licensed plumbers will:
- Assess your home's current water pressure and identify the best installation point
- Install the pump inline with your main water supply
- Complete the 115V electrical connection per code
- Configure intelligent pump control to your desired pressure target
- Test dry-running protection and overall system performance across multiple fixtures
Frequently Asked Questions
Will this pump work with my well water system?
Yes — the SCALA2 is well suited to boosting pressure from well systems, particularly homes experiencing pressure fluctuations as the well tank cycles.
Can it be installed outdoors in an Illinois winter?
While the unit is outdoor-rated, exposure to freezing temperatures still requires appropriate protection or placement in a location shielded from extreme cold; our plumbers can advise on the best installation location for your climate.
How does the warranty work exactly?
Coverage runs for 24 months from the date of delivery to you, or 30 months from the unit's manufacturing date — whichever provides the applicable coverage window; our team can help clarify which applies to your specific purchase.
Perfect Water Pressure in Every Tap with Intelligent Inverter Technology
The Grundfos SCALA2 Water Booster Pump is a state-of-the-art, fully integrated intelligent water pressure booster engineered to deliver flawless, consistent water pressure across every tap, shower, and appliance in your home—even when multiple water sources are running simultaneously. Traditional home water systems suffer from frustrating pressure drops when someone showers while the washing machine is filling or garden sprinklers are active. The SCALA2 solves this permanently by utilizing advanced built-in inverter technology that constantly adjusts pump performance to match your exact household demand. Compact, weather-resistant, and remarkably quiet (operating at whisper-quiet sound levels comparable to a modern dishwasher), it is the ultimate solution for low municipal water pressure or deep well supply boosting. Call our certified plumbing specialists at (224) 754-1984 for expert pump installation, pressure balancing, or emergency replacement:
Flawless Constant Water Pressure: Intelligent speed control automatically ramps up or down to ensure steady, robust pressure at every fixture in the house.
Whisper-Quiet Operation: Encased in a sound-dampening composite housing, operating at a remarkably low noise level for indoor basement or utility room placement.
Integrated Inverter & Smart Control: Combines pump, motor, tank, sensor, drive, and check valve into a single, sleek, plug-and-play unit.
Advanced Protective Safeguards: Built-in dry-run protection, anti-cycling monitoring, and maximum run-time alarms prevent motor burnout and property damage.
Self-Priming Capability: Automatically lifts water from a source below the pump level up to 26 feet (8 meters) in less than 5 minutes during startup.
Grundfos SCALA2 Technical Specifications & Performance
Designed for clean, professional installation in residential basements, utility rooms, or crawlspaces:
Technical Parameter Feature & Specification Details Operational Advantage Manufacturer & Model Grundfos SCALA2 3-45 Water Booster Pump Premium intelligent residential pressure-boosting system. Drive Technology Integrated Variable-Frequency Inverter Motor Delivers constant pressure by modulating motor speed dynamically. Sound Level 47 dB(A) under typical residential use Extremely quiet background operation suitable for indoor living areas. Maximum Pressure Up to 45 psi (3 bar) boost capability Eliminates weak showers and low-flow kitchen sink issues. Electrical Requirements 115V / 60 Hz (Standard residential plug-in connection) Easy electrical integration without requiring specialized heavy-duty wiring. Protection Ratings IPX4 Weatherproof / NEMA 3 (Indoor/Outdoor rated) Protected against water splashes and moisture in humid utility spaces.
Key Benefits of Upgrading to a Grundfos SCALA2 Pump
Integrating a Grundfos SCALA2 booster pump into your home plumbing infrastructure delivers immediate practical comfort rewards:
End Low-Pressure Frustrations: Enjoy powerful, invigorating shower experiences and fast-filling sinks regardless of municipal supply fluctuations.
Handles Multi-Appliance Demand: Run the dishwasher, shower, and lawn sprinklers all at once without experiencing sudden pressure drops.
Energy-Efficient Operation: The intelligent inverter only consumes the exact electrical power needed to maintain your target pressure, saving electricity.
Reliable Self-Diagnostics: User-friendly control panel displays operational status, fault warnings, and reset controls for total peace of mind.
Our Step-by-Step Grundfos SCALA2 Installation Process
Water Pressure & Flow Assessment: Evaluating your home's incoming static water pressure and peak flow requirements to determine optimal setup configurations.
Plumbing Integration & Shut-Off Valves: Cutting into incoming main water supply lines and installing secure brass isolation valves and unions for easy servicing.
Mounting & Vibration Isolation: Securing the compact SCALA2 unit to a solid floor or wall bracket using vibration-dampening pads to eliminate harmonic noise.
Electrical & Check Valve Setup: Connecting the power cord to a grounded 115V outlet and verifying integrated check valve orientation to prevent backflow.
Priming, Pressure Calibration & Testing: Filling the priming chamber, setting target pressure on the digital control pad, and running full multi-fixture flow tests.
Frequently Asked Questions: Grundfos SCALA2 Pump
Q: How does the Grundfos SCALA2 maintain constant water pressure?
A: Unlike traditional pumps that simply turn on and off at preset pressures, the SCALA2 uses a built-in speed-controlled inverter. It senses when water is drawn and automatically adjusts its motor speed to keep water pressure perfectly steady.
Q: Is the Grundfos SCALA2 loud when running in the basement?
A: No. Operating at just 47 dB(A), the SCALA2 is engineered to be whisper-quiet. You won't hear it running over normal household background sounds.
Q: What happens if my municipal water supply is shut off or runs dry?
A: The SCALA2 features built-in dry-run protection. If the pump detects a lack of water supply, it will automatically shut itself down to prevent the motor from overheating and burning out.
Q: Can the SCALA2 be installed outdoors?
A: While it features an IPX4 weather-resistant enclosure suitable for outdoor sheltered placement, in Chicagoland's freezing climate, we strongly recommend indoor installation (such as in a basement or utility room) to prevent winter pipe freezing.
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