What size flow heater do I need?

The required flow heater capacity depends on factors such as flow rate, required temperature, fluid type, and the heating demand of your process or system. Coolworld’s experts can recommend the right solution.

Should I choose a standard or high-temperature flow heater?

Choose a standard flow heater for lower-temperature applications. Choose a high-temperature flow heater when your process or heating circuit requires higher water temperatures, up to 90°C. Coolworld’s experts can advise based on your operating temperature and application.

Can a flow heater connect to my existing pipework or heating system?

In many cases, yes. Compatibility depends on connection sizes, pipework, system design, operating pressure, available electrical supply and site conditions. Coolworld can assess the best setup for your installation.

Flow heaters

Temperature Range

0°C to 90°C

Heating capacity

200 kW

More specifications

Rent reliable temporary flow heaters for fast electric heating that keeps critical operations running.

+31 416 688 088

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Reliable temporary flow heater rental when heating can't stop.

Stay operational

Keep heating circuits operational

Ready when needed

Fast deployment and installation

Grow with demand

Add heating capacity where needed

Expert support

24/7/365 specialist support

Rent, don't invest

Avoid capital and maintenance spend

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Tell us what you need and we’ll help you find the right temporary temperature control solution. Whether you’re planning ahead or dealing with an urgent situation, our specialists will assess your needs and provide a tailored quote.

24/7 Availability – Fast response, minimal downtime.
Certified & Trusted – EU-approved equipment & processes.
Ready-to-Use Rentals – Instant deployment of cooling & heating solutions.

Working with Coolworld was very pleasant. They listened carefully to our process requirements and acted quickly under intense time pressure.

Thijs Terhoeve Manager, Integrated Business Technologies, Daelmans Stroopwafels

Benefits of renting a flow heater from Coolworld

Flow heater rental from Coolworld gives you fast access to temporary electric heating capacity, supported by specialist temperature control expertise. If you're looking for flow heater hire, our specialists can quickly recommend the right solution for your application.

Coolworld helps select the right capacity, temperature range and connection setup for your application. Where needed, the rental solution can include supporting equipment such as hoses, pumps, connections and other accessories for a complete temporary installation.

With electric flow heaters available for water-based heating systems up to 90°C, Coolworld helps keep processes, facilities and projects running when continuous temperature control is essential. Because we know that temperature matters.

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Heat exchangers

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Industrial boilers

FAQ

Here you’ll find the most frequently asked questions. Don’t see your question? Feel free to contact us.

Choose a flow heater when you need temporary inline heating for a water or glycol circuit, process system, commissioning project or heating loop. A flow heater is suitable when heat needs to be added directly to a flowing medium. Choose an electric boiler for smaller central-heating applications, or an industrial boiler for larger hot-water heating demands.

Yes. Flow heaters are commonly used for emergency heating, planned maintenance, commissioning projects, temporary process heating, and additional heating capacity during peak demand.

Coolworld experts will identify the right flow heater solution for your operation.

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process-heating- flowheaters_doorstroom heaters DSH20

What is a flow heater?

Where and why is a flow heater needed?

Flow heaters are used when a water-based system needs temporary heating quickly and reliably. Typical applications include process water heating, closed-loop water or glycol circuits, central heating support, commissioning projects, indirect tank heating and frost protection.

They are relevant across chemical processing, food and beverage production, pharmaceuticals, manufacturing, healthcare, logistics, agriculture and building services.

Flow heater rental is particularly useful during equipment breakdowns, planned maintenance, capacity shortages, facility upgrades, delayed installations and temporary projects. By maintaining controlled water temperatures, flow heaters help protect processes, reduce downtime and keep projects moving.

Flow heaters

Temperature Range

Heating capacity

Reliable temporary flow heater rental when heating can't stop.

Request a quote

Case studies

Benefits of renting a flow heater from Coolworld

Certificates & Standards

Specifications

Temperature range

Heating capacity

Maximum working pressure

Water connection

Electrical connection

Nominal pressure drop

Internal pump

Sound level at 10 m

Related products

FAQ

When should I choose a flow heater instead of a boiler?

What size flow heater do I need?

Should I choose a standard or high-temperature flow heater?

Can a flow heater connect to my existing pipework or heating system?

Is a flow heater suitable for emergency heating or planned maintenance?

What is a flow heater?

Where and why is a flow heater needed?