Energy calculator Perfect heating Solutions

Energy calculator

You can calculate your energy savings potential using the guidance of this Schwank Energy Calculator. It will indicate what the most efficient heating system would be able to achieve compared to an existing heating system in a building. Gas fired infrared radiant heating systems can provide exceptionally efficient heating solutions that can both save on energy costs and reduce the carbon footprint of a building. Just go through the following simple steps to find out what energy efficient space heaters powered by the radiant principle can achieve. This Energy Calculator UK user’s version provides input for gas prices in GBP.


If you are accurate with the information you provide for the Energy Calculator then the results will be more precise. However, a good guess will still help to give useful indications of what efficient heaters will offer in terms of cutting energy consumption and CO2 emissions.


You will also find that default figures are displayed to help with certain calculations if required.

Calculate your savings potential compared to the old heating system

Step 1 - Measurements of a building

Please provide the interior measurements of the building to be assessed for the most efficient heating system as accurately as possible.

Step 2 - Your heat demand

Do you know your heat demand?

Yes No
If you know the energy demand for heating the building please choose “yes” and go to step 3. If not, please choose “no” and the Energy Calculator will make the assessment based on other information you provide.

Step 3 - Your heat demand in kW

This step is deactivated, as you have entered before, you don´t know your heat demand.

Please tell us the energy currently required for heating the building as accurately as possible to assist the Energy Calculator kWh assessment.

Step 4 - Further details about the building

This step is deactivated, as you have entered before, you know your heat requirement.

The age of the building and its commercial purpose have important bearings on how the Schwank Energy Calculator evaluates the environment in which efficient heaters will operate.

Step 5 - Temperature

It is very important that a comfortable temperature is achieved for those working in the building. The lowest likely outdoor temperature, experienced in the winter months and with nightshift working, is also important information for the Energy Calculator.

Step 6 - Number of working hours

The best and most efficient heating solutions include accurately timed temperature controls to provide comfortable heat in the workplace as and when needed. We have assumed an average 8-hour working day, but please amend to your requirement.

Step 7 - Current heating installation

Is the current heating installation the most efficient heating system for the type and purpose of the building?

Step 8 - Gas price

Gas price [GBP/kWh]
What price do you pay for your gas? We have assumed an amount in GBP per kWh, but please amend if necessary to suit your requirements. Then select “calculate” to let the Schwank Energy Calculator assess the potential energy savings you could make on heating the building.


Your energy saving potential per year

Using gas-fired radiant efficient heating solutions could have the following effects on the energy saving potential and CO2 emissions reduction per year for the building’s parameters you have described:

Old consumption: kWh
New consumption: kWh
Old CO2 consumption: tonnes
New CO2 consumption: tonnes
New calculation

I am interested in a personal calculation, which is free of charge.

These results are based and calculated on factors such as supposed air exchange rate, simplified U-value and estimated construction of heat transmission areas. They also include product efficiencies measured by certified test laboratories.

Exact values may differ from these provided by the Energy Calculator, which should be used for guidance purposes. Schwank would be pleased to calculate the exact energy saving potential based on a more detailed assessment of the specific building parameters, including its structure and conditions of usage.
Wärmekoeffizient T:
Wärmekoeffizient L:
Kw alt :
Kw neu :
Preis in € alt:
Preis in € neu:
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