Grundfos SCALA1 3-45 — 99631742 Water Booster Pump 115V
Grundfos SCALA1 3-45 (99631742) — 115V Self-Priming All-in-One Booster Pump
The Grundfos SCALA1 3-45 (115V) integrates pump, sensor, motor, controller, and tank in a single compact unit. Designed for residential pressure boosting, shallow well supply, or tank-fed systems, it delivers around 14.9 GPM at a maximum head of ~150.9 ft. With built-in Bluetooth connectivity, diagnostics, and protection features, it’s a smart, streamlined solution.
Key Features & Benefits
- Compact, integrated design — pump, motor, electronics & tank combined
- Self-priming capability (pumps from depths up to ~26 ft)
- Bluetooth enabled — configure and monitor via Grundfos GO app
- Twin mode support (duty/standby) with optional kit
- Selectable suction modes: tank lift, positive pressure (city supply), and air purge mode
- Built-in check valves to prevent backflow
- Over-pressure and dry-run protection, anti-cycling feature
- Quiet, water-cooled motor design, enclosed composite housing
Applications
- Residential pressure boost where city pressure is weak
- Tank to house water supply
- Shallow well water systems
- Rainwater harvesting / cistern boosting
Specifications
| Model / Variant | SCALA1 3-45 (99631742) |
| Rated Flow | 14.9 GPM |
| Max Head | 150.9 ft (46 m) |
| Voltage / Phase | 115 V, Single-phase |
| Power / Current | 950 W / 8.62 A |
| Max System Pressure | 116 psi (8 bar) |
| Max Inlet Pressure | 43.5 psi (3 bar) |
| Suction Lift | ~26 ft (8 m) |
| Inlet / Outlet Ports | 1″ NPT / 1″ NPT |
Common Questions
Q: What is the maximum suction lift?
A: About 26 ft (8 m), assuming proper priming and airtight suction plumbing.
Q: Will the pump shut off if it runs dry?
A: Yes — the built-in dry-run protection stops operation to prevent damage.
Q: Does it have multiple suction modes?
A: Yes — manual switching between tank lift (low suction), positive inlet pressure, and air-purge mode.
Q: How is Bluetooth used?
A: Connect via the Grundfos GO app to configure settings, review diagnostics, and monitor performance.
A sleek, powerful 115V booster pump for homes needing compact, smart pressure control with no extra hardware.
This item replaces: 96860172
Compare Grundfos SCALA1 Booster Pump Models
| Model | Voltage | Flow Range (GPM) | Max Head (m / ft) | Type | Connectivity | Key Use Case |
|---|---|---|---|---|---|---|
| SCALA1 3-45 (99631736) | 230 V | Up to ≈ 14 GPM | ≈ 45 m / 148 ft | Self-priming | Bluetooth via Grundfos GO app | General residential boosting (230 V supply) |
| SCALA1 3-45 (99631742) | 115 V | Up to ≈ 14 GPM | ≈ 45 m / 148 ft | Self-priming | Bluetooth via Grundfos GO app | Homes with standard 115 V circuits |
| SCALA1 5-55 (99631739) | 230 V | Up to ≈ 18 GPM | ≈ 55 m / 180 ft | High-head, self-priming | Bluetooth via Grundfos GO app | Multi-story homes / longer pipe runs |
| SCALA1 5-55 (99631754) | 115 V | Up to ≈ 18 GPM | ≈ 55 m / 180 ft | High-head, self-priming | Bluetooth via Grundfos GO app | High-performance boosting on 115 V supply |
All SCALA1 boosters share the same smart, compact design — just choose your voltage and performance level for the perfect household pressure solution
Product Information
Product Information
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Shipping & Returns
Grundfos SCALA1 3-45 — 99631742 Water Booster Pump 115V
Grundfos SCALA1 3-45 — 99631742 Water Booster Pump 115V
Grundfos SCALA1 3-45 (99631742) — 115V Self-Priming All-in-One Booster Pump
The Grundfos SCALA1 3-45 (115V) integrates pump, sensor, motor, controller, and tank in a single compact unit. Designed for residential pressure boosting, shallow well supply, or tank-fed systems, it delivers around 14.9 GPM at a maximum head of ~150.9 ft. With built-in Bluetooth connectivity, diagnostics, and protection features, it’s a smart, streamlined solution.
Key Features & Benefits
- Compact, integrated design — pump, motor, electronics & tank combined
- Self-priming capability (pumps from depths up to ~26 ft)
- Bluetooth enabled — configure and monitor via Grundfos GO app
- Twin mode support (duty/standby) with optional kit
- Selectable suction modes: tank lift, positive pressure (city supply), and air purge mode
- Built-in check valves to prevent backflow
- Over-pressure and dry-run protection, anti-cycling feature
- Quiet, water-cooled motor design, enclosed composite housing
Applications
- Residential pressure boost where city pressure is weak
- Tank to house water supply
- Shallow well water systems
- Rainwater harvesting / cistern boosting
Specifications
| Model / Variant | SCALA1 3-45 (99631742) |
| Rated Flow | 14.9 GPM |
| Max Head | 150.9 ft (46 m) |
| Voltage / Phase | 115 V, Single-phase |
| Power / Current | 950 W / 8.62 A |
| Max System Pressure | 116 psi (8 bar) |
| Max Inlet Pressure | 43.5 psi (3 bar) |
| Suction Lift | ~26 ft (8 m) |
| Inlet / Outlet Ports | 1″ NPT / 1″ NPT |
Common Questions
Q: What is the maximum suction lift?
A: About 26 ft (8 m), assuming proper priming and airtight suction plumbing.
Q: Will the pump shut off if it runs dry?
A: Yes — the built-in dry-run protection stops operation to prevent damage.
Q: Does it have multiple suction modes?
A: Yes — manual switching between tank lift (low suction), positive inlet pressure, and air-purge mode.
Q: How is Bluetooth used?
A: Connect via the Grundfos GO app to configure settings, review diagnostics, and monitor performance.
A sleek, powerful 115V booster pump for homes needing compact, smart pressure control with no extra hardware.
This item replaces: 96860172
Compare Grundfos SCALA1 Booster Pump Models
| Model | Voltage | Flow Range (GPM) | Max Head (m / ft) | Type | Connectivity | Key Use Case |
|---|---|---|---|---|---|---|
| SCALA1 3-45 (99631736) | 230 V | Up to ≈ 14 GPM | ≈ 45 m / 148 ft | Self-priming | Bluetooth via Grundfos GO app | General residential boosting (230 V supply) |
| SCALA1 3-45 (99631742) | 115 V | Up to ≈ 14 GPM | ≈ 45 m / 148 ft | Self-priming | Bluetooth via Grundfos GO app | Homes with standard 115 V circuits |
| SCALA1 5-55 (99631739) | 230 V | Up to ≈ 18 GPM | ≈ 55 m / 180 ft | High-head, self-priming | Bluetooth via Grundfos GO app | Multi-story homes / longer pipe runs |
| SCALA1 5-55 (99631754) | 115 V | Up to ≈ 18 GPM | ≈ 55 m / 180 ft | High-head, self-priming | Bluetooth via Grundfos GO app | High-performance boosting on 115 V supply |
All SCALA1 boosters share the same smart, compact design — just choose your voltage and performance level for the perfect household pressure solution
Original: $821.04
-65%$821.04
$287.36Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
Grundfos SCALA1 3-45 (99631742) — 115V Self-Priming All-in-One Booster Pump
The Grundfos SCALA1 3-45 (115V) integrates pump, sensor, motor, controller, and tank in a single compact unit. Designed for residential pressure boosting, shallow well supply, or tank-fed systems, it delivers around 14.9 GPM at a maximum head of ~150.9 ft. With built-in Bluetooth connectivity, diagnostics, and protection features, it’s a smart, streamlined solution.
Key Features & Benefits
- Compact, integrated design — pump, motor, electronics & tank combined
- Self-priming capability (pumps from depths up to ~26 ft)
- Bluetooth enabled — configure and monitor via Grundfos GO app
- Twin mode support (duty/standby) with optional kit
- Selectable suction modes: tank lift, positive pressure (city supply), and air purge mode
- Built-in check valves to prevent backflow
- Over-pressure and dry-run protection, anti-cycling feature
- Quiet, water-cooled motor design, enclosed composite housing
Applications
- Residential pressure boost where city pressure is weak
- Tank to house water supply
- Shallow well water systems
- Rainwater harvesting / cistern boosting
Specifications
| Model / Variant | SCALA1 3-45 (99631742) |
| Rated Flow | 14.9 GPM |
| Max Head | 150.9 ft (46 m) |
| Voltage / Phase | 115 V, Single-phase |
| Power / Current | 950 W / 8.62 A |
| Max System Pressure | 116 psi (8 bar) |
| Max Inlet Pressure | 43.5 psi (3 bar) |
| Suction Lift | ~26 ft (8 m) |
| Inlet / Outlet Ports | 1″ NPT / 1″ NPT |
Common Questions
Q: What is the maximum suction lift?
A: About 26 ft (8 m), assuming proper priming and airtight suction plumbing.
Q: Will the pump shut off if it runs dry?
A: Yes — the built-in dry-run protection stops operation to prevent damage.
Q: Does it have multiple suction modes?
A: Yes — manual switching between tank lift (low suction), positive inlet pressure, and air-purge mode.
Q: How is Bluetooth used?
A: Connect via the Grundfos GO app to configure settings, review diagnostics, and monitor performance.
A sleek, powerful 115V booster pump for homes needing compact, smart pressure control with no extra hardware.
This item replaces: 96860172
Compare Grundfos SCALA1 Booster Pump Models
| Model | Voltage | Flow Range (GPM) | Max Head (m / ft) | Type | Connectivity | Key Use Case |
|---|---|---|---|---|---|---|
| SCALA1 3-45 (99631736) | 230 V | Up to ≈ 14 GPM | ≈ 45 m / 148 ft | Self-priming | Bluetooth via Grundfos GO app | General residential boosting (230 V supply) |
| SCALA1 3-45 (99631742) | 115 V | Up to ≈ 14 GPM | ≈ 45 m / 148 ft | Self-priming | Bluetooth via Grundfos GO app | Homes with standard 115 V circuits |
| SCALA1 5-55 (99631739) | 230 V | Up to ≈ 18 GPM | ≈ 55 m / 180 ft | High-head, self-priming | Bluetooth via Grundfos GO app | Multi-story homes / longer pipe runs |
| SCALA1 5-55 (99631754) | 115 V | Up to ≈ 18 GPM | ≈ 55 m / 180 ft | High-head, self-priming | Bluetooth via Grundfos GO app | High-performance boosting on 115 V supply |
All SCALA1 boosters share the same smart, compact design — just choose your voltage and performance level for the perfect household pressure solution
