Introduction

If you’re dealing with low water pressure, pulling water from a well, or trying to push water through an irrigation system, the pump you choose makes all the difference. Pick the wrong one and you’re wasting money, burning out equipment, or simply not getting the water flow you need.

This guide breaks down the three main pump categories Baker Water Systems manufactures — jet pumps, DuraMAC booster pumps, and the new VS Booster — so you can make an informed decision based on your actual application, not guesswork. Whether you’re a homeowner, a plumber, or a contractor, this article walks you through the differences in plain language.

What Is a Jet Pump?

A jet pump is a centrifugal pump that uses a jet ejector (a nozzle and venturi assembly) to create suction and lift water from a well. The key thing to understand: jet pumps are designed to pull water up from below ground level — something booster pumps cannot do. They are the go-to solution when your water source is a private well, a spring, a cistern, or any below-grade water supply.

Jet pumps sit above ground, typically in a basement, crawl space, pump house, or mechanical room. They draw water up through piping, pressurize it, and deliver it to your home’s plumbing system through a pressure tank.

Shallow Well vs. Deep Well: What’s the Difference?

This is the most common point of confusion. The difference between shallow well and deep well is not about the total depth of the well — it’s about the distance from the pump to the water surface (called “suction lift”).

Shallow Well Jet Pumps (0–25 Feet to Water)

A shallow well jet pump has its ejector built right into the pump housing. It uses a single suction pipe going down to the water. The ejector recirculates a portion of the water back through the nozzle to increase suction, which allows the pump to lift water from depths up to about 25–28 feet.

The trade-off: as the distance to water increases, more water recirculates through the ejector and less is available for delivery. A shallow well pump at 25 feet of lift delivers significantly less water than the same pump at 5 feet of lift.

Baker shallow well jet pump series:

• 8100 Series — NEMA J motor, up to 25 GPM, pressures to 80 PSI
• 8300 E-Series — Budget-friendly option, up to 1-1/2 HP
• 8500 Series — Square flange motor, high capacity and high pressure variants

Deep Well Jet Pumps (25–120 Feet to Water)

When the water level drops below 25 feet, you need a deep well configuration. The ejector is moved from the pump body down into the well, positioned at or near the water level. The pump sends pressurized water down one pipe to the ejector, which pushes water back up a second pipe to the surface.

This two-pipe system allows jet pumps to lift water from depths up to 120 feet. The deeper the water, the less flow you get — but the system works reliably as long as the ejector is properly sized for the depth.

Baker convertible and deep well jet pump series:

• 8000 Series — Convertible, up to 46 GPM, ½ to 1-1/2 HP
• 8200 Series — Convertible, NEMA J motor, deep well performance to 120 feet
• 8600 Series — Convertible, square flange motor, up to 65 GPM
• 1500 Series — Multi-stage, pressures to 100 PSI, ¾ to 1-1/2 HP

Convertible Jet Pumps: Best of Both Worlds

A convertible jet pump starts as a shallow well pump with the ejector mounted on the pump body. If your water table drops over time, you can convert it to deep well operation by installing an ejector assembly down in the well and switching to a two-pipe configuration. This flexibility makes convertible pumps a smart choice if you’re uncertain about future water levels.

Baker Jet Pump Series at a Glance

What Is a DuraMAC Booster Pump?

A booster pump does exactly what the name suggests: it boosts existing water pressure. Unlike a jet pump, a booster pump does not pull water from a well. It takes water that’s already under some pressure — from a city main, a well with an existing pump, or a storage tank — and increases that pressure for delivery to your home, building, or irrigation system.

The Baker DuraMAC is their flagship booster pump line, and it comes in several configurations covering residential, light commercial, commercial, and irrigation applications. Baker calls it “The World’s Most Versatile Booster System” — and the product line backs that up.

How DuraMAC Booster Pumps Work

DuraMAC pumps use a multi-stage stainless steel centrifugal pump driven by a totally enclosed fan-cooled (TEFC) motor. A pressure transducer continuously monitors system pressure. When you turn on a faucet or sprinkler, the pressure drops, the transducer detects it, and the pump starts automatically. When you stop using water, the pump detects low flow and shuts off.

The electronic control unit offers three operating modes, which is what makes the DuraMAC so versatile:

• Pressure Mode — Starts on pressure drop, stops on low flow. The standard mode for most residential and light commercial applications.
• Flow Mode — Starts and stops based on water flow, regardless of pressure. Useful for systems with fluctuating incoming pressure or minor leaks.
• Conservation Mode — The pump only operates when system pressure drops below city supply during peak demand. Saves energy and reduces wear.

DuraMAC Product Tiers

Sizing a DuraMAC: It’s Additive

One of the most important things to understand about booster pumps is that they add pressure to whatever is already in the system. If your city supply delivers 30 PSI and you install a DuraMAC with a +35 PSI boost, your total system pressure becomes 65 PSI. Most plumbing codes cap residential pressure at 80 PSI, so you need to select a model that won’t exceed that limit.

The New VS Booster: Built-In VFD Technology

The Baker VS Booster represents the next generation of residential and light commercial boosting. While the standard DuraMAC runs at a single speed (on or off), the VS Booster has a built-in variable frequency drive (VFD) that continuously adjusts motor speed to match demand. The result is truly constant pressure — no surges when a faucet opens, no drops when the washing machine kicks in.

What Makes the VS Booster Different

• Built-in VFD, pressure tank, pressure sensor, and check valve — all in one ultra-compact unit
• Self-priming design
• Programmable via smartphone app
• Dry-run, air detection, leak detection, and overload protection
• NSF 61 certified for potable water
• Stainless steel construction (AISI 304 casing, AISI 316 shaft)
• Available in 1 HP (120V residential) and 2 HP (230V light commercial)

The VS Booster is ideal for customers who want premium, quiet, energy-efficient boosting in the smallest possible footprint. The 1 HP model plugs into a standard 120V outlet — truly plug-and-play.

DuraMAC Vertical Multistage VFD Booster Systems (IQ1000)

For larger commercial applications requiring higher flow, higher pressure, or redundancy, Baker offers the DuraMAC Vertical Multistage Variable Speed Booster Systems. These use Yaskawa VFD drives and range from 3 HP to 10 HP in simplex, duplex, and triplex configurations. They deliver up to 150 PSI boost and flow rates from 80 to 420 GPM (triplex).

Features include lead-lag pump control, backup transducers, low suction alarms, and password-protected settings. These are serious commercial systems designed for multi-story buildings, large facilities, and high-demand irrigation.

Jet Pump vs. Booster Pump: Head-to-Head Comparison

Here’s the simplest way to think about it: a jet pump creates pressure from a below-grade water source, while a booster pump increases pressure on water that’s already flowing. They solve fundamentally different problems.

When to Choose a Jet Pump

• Your water source is a private well, spring, or cistern below ground level
• You need to lift water (suction lift) — booster pumps cannot do this
• Water table is between 0 and 120 feet from the pump
• You want the pump above ground for easy maintenance access
• Flow requirements are under 65 GPM
• Budget is a consideration — jet pumps are generally less expensive than submersible pumps

When to Choose a Booster Pump

• You’re on city water but pressure is too low (common far from the water tower or at higher elevations)
• You have an existing well system with adequate flow but insufficient pressure at the fixtures
• You need to boost pressure for a sprinkler or irrigation system
• You’re feeding a multi-story building where upper floors get weak pressure
• You need smart control features like conservation mode, flow mode, or VFD constant pressure

Quick Decision Guide