System and radiator sizing

Radiator sizing and sizing of systems can easily be done with the help of Purmo's free calculator softwares. The radiator sizing program can be used for simple and rational sizing of radiators, convectors etc. We offer easy-to-use tools for calculating heat demands, radiator sizing and selecting items.
Reduce footprint

Selecting the best radiators for every application: a complete checklist

Find the best radiators for any space with our comprehensive checklist. Explore top options for all applications and make the best choice.

Renovation
Radiators
Sizing of products
Electrical heating
Hydronic heating
5 FAQs about combining a heat pump with radiators

Combining a heat pump with radiators: 5 FAQs answered

We are happy to offer more clarity by answering the 5 most frequently asked questions from our customers about combining a heat pump with radiators.

Better integration
Hydronic heating
Radiators
Sizing of products
Tools and Services
A developer's point of view on building solutions in a low-carbon economy

Industry insights: a developer’s point of view on building solutions in a low-carbon economy

We gladly share some insights from our interesting talk with Crest Nicholson about continuous balancing, building solutions in a low-carbon economy and the added value of sustainability within the trade.

Insights
Sustainability
Sizing of products
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Radiators
Calculator tool Purmo radiators

Featured tool: finding the best radiators for heat output with the Purmo product calculator

To help HVAC professionals find the best radiators for heat output, there is the Purmo product calculator. A practical online tool that helps you find radiators that match the specific requirements of any project.

Work smarter
Sizing of products
Hydronic heating
Electrical heating
The important role of radiators in a heat pump system

The important role of radiators in a heat pump system

For a heat pump system to operate efficiently, as for all systems in fact, all components must be fully coordinated with each other. Only then will the system be able to reach its full potential and guarantee optimal efficiency.

Sizing of products
Energy saving
Hydronic heating
Radiators
The technological evolution of modern heating systems

The technological evolution of modern heating systems

As technology advances we can heat existing buildings in a way that is more economic and more sustainable. However, modern heating also comes with high demands.

Sizing of products
Insights
Radiators
Underfloor heating
Product info
Work smarter
Expert guide to sizing oil-filled electric radiators

An expert guide to sizing oil-filled electric radiators

The answer to the question ‘What size oil-filled radiator do I need?’ is subject to various factors. This guide offers a complete overview and access to a practical radiator sizing tool.

Sizing of products
Electrical heating
Insights
Radiators
Work smarter