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Commercial Booster Pumps
A.Y. McDonald DuraMAC IQ1000 Duplex Variable Speed Booster Pump
A.Y. McDonald
A.Y. McDonald DuraMAC IQ1000 Duplex Variable Speed Booster Pump
- Price
- From $26,538.25
DAB Esybox Max Commercial Variable Speed Booster Pump
DAB
DAB Esybox Max Commercial Variable Speed Booster Pump
- Price
- From $4,290.85
Franklin Electric Inline SpecPAK Booster System
Franklin Electric
Franklin Electric Inline SpecPAK Booster System
- Price
- From $32,760
A.Y. McDonald DuraMAC Micro Duplex Variable Speed Booster Pump
A.Y. McDonald
A.Y. McDonald DuraMAC Micro Duplex Variable Speed Booster Pump
- Price
- From $9,067.75
A.Y. McDonald DuraMAC Dual-Mode Duplex Booster Pump
A.Y. McDonald
A.Y. McDonald DuraMAC Dual-Mode Duplex Booster Pump
- Price
- From $10,712.35
A.Y. McDonald DuraMAC Dual-Mode Simplex Booster Pump
A.Y. McDonald
A.Y. McDonald DuraMAC Dual-Mode Simplex Booster Pump
- Price
- From $5,259.13
A.Y. McDonald DuraMAC IQ1000 Simplex Variable Speed Booster Pump
A.Y. McDonald
A.Y. McDonald DuraMAC IQ1000 Simplex Variable Speed Booster Pump
- Price
- From $14,734
A.Y. McDonald DuraMAC Micro Simplex Variable Speed Booster Pump
A.Y. McDonald
A.Y. McDonald DuraMAC Micro Simplex Variable Speed Booster Pump
- Price
- From $4,711
A.Y. McDonald DuraMAC IQ1000 Triplex Variable Speed Booster Pump
A.Y. McDonald
A.Y. McDonald DuraMAC IQ1000 Triplex Variable Speed Booster Pump
- Price
- From $39,513.35
DAB Esybox Max Duplex Variable Speed Booster System, Dock, I/O, Tank
DAB
DAB Esybox Max Duplex Variable Speed Booster System, Dock, I/O, Tank
- Price
- From $11,794.56
DAB Esybox Max Triplex Variable Speed Booster System, Dock, I/O, Tank
DAB
DAB Esybox Max Triplex Variable Speed Booster System, Dock, I/O, Tank
- Price
- From $16,769.19
DAB Esybox Max Quadplex Variable Speed Booster System, Docks, I/O, Tank
DAB
DAB Esybox Max Quadplex Variable Speed Booster System, Docks, I/O, Tank
- Price
- From $23,305.02
Commercial Booster Pumps
Commercial Booster Systems · All BrandsCommercial
Commercial
Booster Pumps and Systems
Simplex to quadplex variable speed booster systems for buildings, campuses and process water. DuraMAC IQ1000 and Micro, DAB Esybox Max, Grundfos Hydro Multi-E, Multi-B, MPC-E and CMBE, and Franklin Electric SpecPAK.
1 to 4Pumps per system
To 420 GPMDuraMAC IQ1000 triplex
To 136 PSIBoost, DAB 85/120
1Ph · 3Ph208-230V and 460V
A commercial booster system holds one building pressure from night-time trickle to morning peak. Two or more variable speed pumps share the load, stage in as demand rises and rotate duty, so one pump can rest or be serviced while the others carry the building. The right system is set by two numbers, required boost and peak flow, and by how much standby the building needs.
Watermain Supply supplies packaged commercial systems from five manufacturers, with the tank, controls and accessories on one order. We check every selection against the manufacturer's published group curve before it ships, and a factory submittal is available on request. Call 1-888.510.4036. All products are genuine, factory-new equipment in original manufacturer packaging, sold and supported by Watermain Supply, an independent industrial supplier.
Booster Pump Sizing CalculatorBoost, flow and the systems that fit Pressure Tank Sizing CalculatorTank size for your group Commercial Booster Selection GuideStep-by-step, with worked examples
Shop by System
Each line's full range, with its own group performance tables, submittals and accessories.
DuraMAC IQ1000 and Micro
Simplex to triplex skids, 3 in flanged stainless manifoldsShop DuraMAC VFD
DuraMAC Dual-Mode
Simplex, duplex and modular light commercialShop Dual-Mode
DAB Esybox Max
Duplex, triplex and quadplex, no control panelShop Esybox Max
Grundfos Hydro Multi-E, Multi-B and MPC-E
CRE and CME based packaged systemsShop Hydro Multi
Grundfos CMBE
Single and TWIN constant-pressure boostersShop CMBE
Franklin Electric SpecPAK
Inline and VR SpecPAK with PLC and HMIShop SpecPAK
Data Center Pumps and Systems
Boosters, inline and end suction pumps, tanksShop Data CenterHow to Choose a Commercial System
Size the duty first, then the pump count, then the line.
1. Required Boost
Setpoint = pressure at the highest fixture + 0.433 PSI per foot of rise to it + friction. Required boost = setpoint minus inlet pressure measured at peak demand, not at noon.
2. Peak Flow
Use fixture units on Hunter's curve (IPC Table 604.3) for residential and multifamily, and the IAPMO Water Demand Calculator for light commercial. Peak simultaneous demand sizes the system, never the total connected load.
3. Standby
A duplex lets one pump rest. A triplex sized N+1 keeps full design flow with any one pump out of service, the usual choice for tall buildings and hotels. A quadplex gives the widest turndown.
4. Power and Room
Match the voltage in the building (single-phase, 208-230V or 460V three-phase) and the space in the plant room: wall-adjacent docks, a factory skid, or a panel with an HMI where the specification calls for one.
Quick rule. Pick a system whose group curve adds your required boost at your peak flow with margin, and keep the required boost below about 70 percent of the model's maximum. Past that, step up a model or add a pump.
DAB or DuraMAC? Two Lines, Two Jobs
We sell both, and they suit different buildings. The duty decides.
DAB Esybox Max fits when you need
- High boost at modest flow: the 85/120 adds up to 136 PSI.
- Plug and play in a tight room, with no control panel and no wiring between pumps.
- A station you grow from one pump to four.
DuraMAC IQ1000 fits when you need
- 3 in flanged stainless manifolds on a factory-built skid.
- Higher flow per pump: duplex to 280 GPM and triplex to 420 GPM.
- Flow-heavy duties at moderate boost, with 460V options.
The short rule. Above roughly 90 PSI of boost, Esybox Max usually does the job on less horsepower and less floor space. Below it, with heavy flow, DuraMAC covers the duty with fewer pumps.
Why Buy Your Booster System from Watermain Supply
Engineering-Led Sizing
Send the duty and we check it against the manufacturer's published data before you order.
Multi-Brand Honesty
We sell several brands in every category. If one is not the right fit, we will say so and quote the one that is.
Account Terms Available
Net-30 for qualified contractor, property management and municipal accounts.
Parts and Aftermarket
Genuine repair parts and accessories, matched by model, so the job ships complete.
Frequently Asked Questions
Straight answers to the questions buyers ask us most.
Duplex, triplex or quadplex: how many pumps do I need?
Choose the count by peak flow and standby. A duplex suits smaller buildings where one pump can rest. A triplex sized N+1 keeps design flow with one pump out of service. A quadplex gives the widest range from night flow to peak.
How do I work out the boost a building needs?
Add the pressure needed at the highest fixture, 0.433 PSI for each foot of rise to it, and friction. Subtract the inlet pressure measured at peak demand. The result is the boost the group must add at peak flow.
What does N+1 mean on a booster system?
N pumps carry the design flow and one more stands by. If any pump fails or is serviced, the building keeps full pressure. It is the usual specification for hotels, high-rise residential and healthcare-adjacent buildings.
Do commercial booster systems come with a tank and controls?
Packaged systems ship with their controls; most add a supplemental pressure tank. Each product page lists what ships and what is ordered separately, and the tank calculator sizes the tank for your group.
Which line suits a specification that calls for a UL 508A panel?
The Franklin Electric SpecPAK systems carry a PLC panel with an HMI. Send us the specification section and we will match it line by line across the brands we carry.
Can you size a system for my building?
Yes. Send the floors, fixture count, inlet pressure at peak and available power to sales@watermainsupply.com or call 1-888.510.4036. We reply with a sized selection checked against the manufacturer's group curve.
Ready to Size Your Booster System?
Send floors, fixture count, inlet pressure and available power. We will reply with a sized selection, accessories and ship date.
Technical data on this page is taken from manufacturer product literature and is subject to change by the manufacturer. Confirm against the current installation manual before specifying.
A.Y. McDonald, DuraMAC and IQ1000 are trademarks of A.Y. McDonald Mfg. Co.; DAB, Esybox Max and Esydock of DAB Pumps S.p.A.; Grundfos, Hydro Multi-E, Hydro Multi-B, Hydro MPC-E, CMBE, CRE and CME of Grundfos Holding A/S; Franklin Electric and SpecPAK of Franklin Electric Co., Inc.; Goulds and Aquavar of Xylem Inc. All are used here for product identification only.
Watermain Supply is a DBA of E4 Industrial LLC, an independent industrial supplier based in Houston, Texas.
A.Y. McDonald, DuraMAC and IQ1000 are trademarks of A.Y. McDonald Mfg. Co.; DAB, Esybox Max and Esydock of DAB Pumps S.p.A.; Grundfos, Hydro Multi-E, Hydro Multi-B, Hydro MPC-E, CMBE, CRE and CME of Grundfos Holding A/S; Franklin Electric and SpecPAK of Franklin Electric Co., Inc.; Goulds and Aquavar of Xylem Inc. All are used here for product identification only.
Watermain Supply is a DBA of E4 Industrial LLC, an independent industrial supplier based in Houston, Texas.
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