Advantage 20 to 40 Ton Portable Chillers

Air- or Water-Cooled

When the load outgrows the mid-range portables

Overview

Where a single machine's load, or a small multi-machine cell, outgrows the mid-range Advantage portables.

At 20 to 40 tons an Advantage portable chiller is still a self-contained package - no plant loop, no central plant piping - but it's sized for a larger single press, a bank of machine tools sharing one loop, or a process load that has grown past what a smaller portable can carry.

This is also the point where it's worth comparing a large portable against a small indoor central chiller (see Central Chillers, 20 to 180 tons): if the load is likely to grow further, or if more than one department will eventually tap the same chilled-water loop, a central package with its own reservoir and pump station may be the better long-term fit even at a similar tonnage.

Both air- and water-cooled configurations are available at this size. Give us the peak heat load, required fluid temperature, ambient design condition, and whether the load is expected to grow, and we'll help you compare a large portable against stepping up to a central unit. Full specs for every MG model in this range, including the highest-tonnage remote-condenser units, are on the MG Series part-number pages.

  • Air-cooled or water-cooled
  • Suitable for larger single presses or small multi-machine cells
  • Worth comparing against an indoor central chiller if the load may grow
Capacity
20 to 40 tons
Package
Self-contained
Condensing
Air or water
Remote condenser
Largest models

Configurations in This Range

What changes between the packages is the condenser side, not the capacity.

Configuration Capacity Range Notes
Air-Cooled 20 to 40 tons Self-contained, no plant water connection
Water-Cooled 20 to 40 tons Smaller footprint, needs plant/tower water supply
Remote Condenser (ARC) Highest-tonnage models available Compressor/pump indoors, condenser coil remote

Portable or Central at This Tonnage?

At 20 to 40 tons, a portable chiller and the smallest Advantage indoor central packages overlap in capacity, so the choice comes down to how the equipment will be used rather than tonnage alone. A portable stays a self-contained, single-loop unit with no plant-wide piping - the right call for one machine or one cell that isn't expected to share chilled water with anything else. A central package adds a dedicated reservoir and pump station built for a growing or multi-department loop, at a higher upfront cost that pays off if capacity needs to expand later.

If your not sure which side of that line your project falls on, send us the current load, the layout, and whether other departments might eventually tap the same loop - we'll help you compare both options on total installed cost, not just chiller price.

Portable or Central?

Answer These and We'll Confirm the Fit

At this size we check that a portable is still the better buy before quoting one. These answers settle it:

  • Peak load of the machine or cell, or flow and temperature rise
  • Fluid setpoint and the hottest air the unit will see
  • Air-cooled, water-cooled, or a remote ARC coil (largest models only)
  • How many machines share the loop, and how it runs on a light shift
  • Any machines or departments that may share the loop later
  • Voltage, phase and floor space at the cell
Request a Quote

Call and talk it through with an engineer: 1-805-484-2992

Heat, redundancy and bypass flow in a 40-ton cell

About one and a quarter times its cooling capacity, since compressor heat rides along with the process heat. A 40-ton air-cooled unit at full load releases around 600,000 BTU/hr into the room, comparable to a 175 kW electric heater running all shift. In a closed building in July that warms the space, raises the air entering the condenser and trims the chiller's own capacity, a spiral that worsens through the afternoon. Duct the discharge outside, choose water-cooled where a tower exists, or look at the remote-condenser models in this range so the heat leaves the building.

Two 20s when losing all cooling at once is the bigger risk. If one unit trips, the other still carries half the cell, and a light shift can run on one unit alone. A single 40 costs less to buy, needs one set of electrical and water connections and takes less floor space. The mistake is deciding on purchase price alone when a full-cell outage costs more in one shift than the gap between the two Advantage quotes.

Yes - something has to carry the flow when the cell is mostly shut down. With several machines on one supply header, closing all but one leaves the pump pushing toward a single small branch: pressure climbs, that machine gets more water than it wants, and with every valve closed the pump dead-heads and overheats. A bypass between supply and return at the chiller end keeps minimum flow through the evaporator whatever the machines do - either a bypass option on the selected Advantage model where one is offered, or a field-installed pressure-actuated valve. Tell us how the cell runs on light shifts and we will confirm which one fits.

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Questions?

1-805-484-2992

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