Why the installed cost of a mold temperature controller is not a single number

If you are sourcing from overseas, the practical answer is this: ask for the unit price and the installation scope as two separate line items, and ask for the unit to be specified by model number rather than by a vague temperature class. That single change makes quotes comparable and usually removes the largest source of budget variance.

What actually drives the price of the unit

Unit price tracks heating capacity, pump capacity, and the size of the flow circuit far more than it tracks any brand feature. In a water-type controller, the electric heating power and the pump motor are the two components that dominate the bill of materials, and both scale together as you move up a model line.

Heating power sets the electrical infrastructure cost, not just the unit cost

A unit rated 6 kW can often run on an existing branch circuit in a small plant. A unit rated 36 kW cannot — it needs a dedicated feed, a properly sized disconnect, and often a panel upgrade. That is why the jump in installed cost between the smallest and largest units in a series is much steeper than the jump in the catalog price of the units themselves. The heating power figure on the datasheet is your first estimate of the electrical work that installation will require.

Pump power and flow determine how much mold you can serve

Pump power and maximum flow decide whether the unit can push water through a large or restrictive mold circuit at a useful rate. Under-sizing the pump is a false economy: the controller heats correctly but cannot move heat out of the mold fast enough, and cycle time suffers. Over-sizing it wastes money on a unit and a motor that never run near capacity.

Flow path configuration affects the manifold and hose package

The number of inlets and outlets, along with the connection size, determines how much manifold hardware, hose, and fitting labor the installation consumes. This is a real cost line and one that buyers frequently forget to specify, which means it gets priced inconsistently across quotes.

Verified specifications for the water-type series

The table below lists the published specifications for the single-temperature water series. Every value is tied to its exact model; do not interpolate between rows, because the flow path configuration and connection size change at specific points in the series rather than smoothly.

All models in this series use clean water as the heat transfer medium, direct cooling, a minimum temperature of cooling water temperature plus 5 to 30 °C, a K-type probe thermocouple for media inlet and outlet temperature sensing, and a 15 mm return water port. Specifications are subject to change without prior notice, so confirm the final configuration at the time of order.

Reading two specification values that change the installed cost

Two published values tell you more about installation cost than any other entry on the datasheet.

The first is maximum pressure, rated at 0.4 MPa for both the TMC 90W and TMC 120W. Maximum pressure is a separate rating from maximum flow, not a duty point, and it tells you what the circulation loop is built to withstand. A higher pressure ceiling matters when the mold has long, narrow cooling channels or when the controller sits far from the press and the circuit has significant resistance. If the press is across the aisle and the mold has small-diameter channels, a model rated above the pressure your loop actually develops gives you margin; if it is a short run into a generously sized circuit, a lower rating is adequate and you are not paying for headroom you never use. Note that the 180W and 240W carry a 0.25 MPa rating while flowing considerably more water — flow and pressure move in opposite directions here, so match the unit to whether your circuit is flow-limited or pressure-limited.

The second is maximum flow, 42 L/min on the TMC 60W and 310 L/min on the TMC 360W. Flow rate is what determines how quickly heat leaves the mold, and therefore how much of cycle time the controller can support. A small mold on a short cycle may be fully served at 42 L/min, while a large mold or a multi-cavity tool with long cooling channels may need the higher end of the range to hold temperature. Because the 60W and 360W also differ enormously in electrical demand — 6 kW versus 36 kW — the flow figure and the heating figure should be read together when you estimate both the unit cost and the electrical installation cost.

Both values are measured at the pump and are published at a stated maximum, not at a guaranteed operating point for your specific mold. Confirm the actual duty point for your tooling with the supplier before you commit to a model, because a unit selected at its ceiling has no reserve for a future mold change.

Comparing adjacent models: TMC 90W versus TMC 120W

These two models sit next to each other but differ in a way that directly affects the installation scope.

The trade-off is clear once you read it correctly: the two units share the same pump, the same 60 L/min maximum flow, and the same 0.4 MPa maximum pressure, so the water-side capability is identical. What differs is heating power — 12 kW against 9 kW — and the number of circuits, four in and four out against two in and two out. The 120W gives you more mold circuits and faster heat-up on a heavier mold, but it demands a larger electrical supply for the same hydraulic duty. For a buyer, that means the 120W carries both a higher unit cost and a higher electrical installation cost, while the 90W may be the better match when your mold uses only two circuits and your cycle does not need the extra heating rate.

What installation adds to the budget

Installation is where quotes diverge most, because every plant defines the boundary differently. Ask each supplier to state explicitly which of the following are included.

• Electrical supply and connection. A dedicated circuit, breaker or disconnect, and cable run sized to the unit’s heating and pump power. This is usually the largest single installation line and is almost never included in a unit-only quote.
• Water supply and return piping. Connection to plant cooling water, isolation valves, strainers, and the return line into the 15 mm return water port. Strainers matter more than buyers expect, because debris is the most common cause of restricted flow in a newly installed circuit.
• Hoses, manifolds, and fittings. Sized to the media port size of the selected model — 3/8 inch or 1 inch or 1.2 inch — and to the number of circuits the flow splitter provides.
• Commissioning and temperature verification. Filling, venting, leak checking, setting the control parameters, and confirming that the mold reaches and holds the intended setpoint. Ask what temperature is measured, at what point, and under what conditions.
• Operator training and documentation. Often bundled at no extra charge, but confirm it in writing rather than assuming.
• Freight, duties, and rigging. For overseas sourcing, the delivered cost includes ocean or air freight, customs clearance, and moving the unit to the press.

What to put in a quote request

A quote is only comparable if every supplier prices the same scope. Send the following in one message and ask for unit price and installation price as separate lines.

• The model number you are considering, or the mold size, number of cooling circuits, and target mold temperature if you want a recommendation.
• Available plant electrical supply — voltage, phase, and the capacity of the nearest panel — so the electrical scope can be priced accurately.
• Distance from the controller to the press, and the diameter and length of the existing cooling lines.
• Cooling water temperature at your site, since the minimum achievable temperature is cooling water temperature plus 5 to 30 °C.
• Whether installation is to be quoted as a lump sum or as labor plus materials, and which items fall outside the supplier’s scope.
• Whether commissioning includes a documented temperature check at the mold, and what that check covers.

For the water-type series described above, the matching product page with the full specification table is available at mold temperature controllers. If your process runs above the 120 °C ceiling of a water unit, review the oil-type temperature controller range instead, since the heating medium changes the achievable temperature and the installation requirements together. Buyers comparing this purchase against the rest of the auxiliary equipment package can also review the injection molding auxiliary equipment overview before finalizing the layout.

Frequently asked questions

What determines the price of a mold temperature controller for injection molding?

Heating power and pump power are the two largest drivers of unit price, because they are the costliest components in the machine. Beyond the unit itself, electrical connection, piping, hoses, manifolds, and commissioning labor usually account for a substantial share of the installed cost, and those items vary with plant layout rather than with the equipment.

Is installation normally included in a mold temperature controller quote?

It depends entirely on the supplier, and this is the main reason quotes are hard to compare. Some quote the unit only, some include commissioning but not electrical work, and some quote a full turnkey installation. Always ask for the unit price and the installation price as two separate line items so you can see exactly what is covered.

Do I need a larger model to reduce installation cost?

Usually the opposite. A larger unit means higher heating power, which requires a heavier electrical feed and often a panel upgrade, so the electrical installation cost rises along with the unit price. Select the smallest model that covers your mold circuits and cycle requirement with a sensible margin, rather than the largest your budget allows.

What electrical information should I provide when requesting a mold temperature controller quote?

Give the supplier your available voltage, phase, and the spare capacity at the nearest panel, along with the distance from the panel to the press. With those three details a supplier can price the electrical scope accurately instead of adding a contingency allowance that inflates the quote.

How do I know if a water-type unit is suitable, or if I need an oil-type unit?

The deciding factor is the maximum temperature your process requires. The water series listed above is rated to a maximum of 120 °C, and its minimum achievable temperature is cooling water temperature plus 5 to 30 °C. If your mold needs to run hotter than that ceiling, an oil-type controller is the appropriate choice, and it comes with different installation requirements.

What should be included in the commissioning of a newly installed mold temperature controller?

At minimum: filling and venting the circuit, checking for leaks, verifying the pump develops flow through the mold, and confirming the mold reaches and holds the intended setpoint. Ask the supplier to state in the quote what temperature is measured, at which point in the circuit, and under what conditions, so the acceptance criteria are clear before the technician arrives.