Apps in this category may contain mild or occasional cartoon, fantasy or real-life violence, as well as occasional or mild adult, sexually suggestive or horrifying content and may not be suitable for children under 9 years of age.

12+

Apps in this category may contain occasional mild indecent language, frequent or intense cartoon or real-life violence, minor or occasional adult or sexually suggestive material, and simulated gambling, and may be for children under 12 years of age.

17+

You must be at least 17 years old to access this App.

Apps in this category may contain frequent and intense offensive language; Frequent and intense cartoon, fantasy or realistic violence: frequent and intense adult, scary and sexually suggestive subjects: as well as sexual content, nudity, tobacco, alcohol and drugs, may not be suitable for children under 17 years of age.

RadiatorOutput Screenshots

iPad

iPhone

About RadiatorOutput

Quickly calculate a radiator's heat output at different water and air temperatures.

Select the radiator that fits, based on heat losses and water temperature. Don't undersize or oversize and ensure the best energy efficiency possible.

Low water temperature (e.g. with heat pump as heat generator) can greatly increase energy efficiency and keep the cost down, but it still needs to provide enough heat to keep the room or the building warm. That's why larger radiators are needed in such cases. Find out exactly how large quickly using this app. Anywhere, anytime, fast and simple.

** Note: metric units only.

*** This app is totally free - no ads, no in-app purchases. No account needed, no log-ins, no user data needed nor collected. ***

A radiator's heat output is highly dependent on temperature of water entering and leaving the radiator. Nominal heat output of a radiator can be found in a catalogue or a technical brochure. The nominal heat output is valid only at the conditions specified in the catalogue. This application will calculate the heat output of the selected radiator at conditions specified by the user. This is useful for the selection of the right size of a radiator when designing a new heating system, as modern heating systems tend to use lower water temperatures than those specified in catalogues. The reason is simple: lower temperatures mean higher energy efficiency and lower cost. The application can also be used for calculating the cooling output of convectors and fan-coils at various conditions.

The application is available in English, French, German and Italian languages.

The application does not contain ads.

What's New in the Latest Version 2.5

Last updated on Nov 2, 2022

Old Versions

Corrected link in help.
Updated for newer OS versions.

Version History

2.5

Nov 2, 2022

Corrected link in help.
Updated for newer OS versions.

2.3

Apr 15, 2021

Small changes.

2.2

Oct 28, 2020

- Small fixes;
- New icon.

2.1

Feb 1, 2020

Dark mode.

2.0

Jun 14, 2019

- Support for newer devices;

1.6

Feb 28, 2015

- iOS 8 support;
- iPad support;
- Slovenian language;
- minor changes;

1.5.1

Oct 28, 2013

- small fix;

1.5

Oct 14, 2013

- redesigned for iOS 7;

1.3

Oct 5, 2012

iPhone 5 screen support;
New icon.

1.2

Jun 4, 2012

- Automatic calculation without the button;
- Reset button added;

1.1

Mar 30, 2012

- The application was rewritten using a table view.
- A new calculation field was added which indicates the correct radiator size to choose in the catalogue based on the heat load of a heated space.
- Landscape mode was updated so that the whole screen width is used.
- Translations were updated.
- Help was updated.

1.0

Feb 24, 2012

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