Old building renovation

Once your heating system is old and has become a definite financial drain, it is necessary to refurbish it. The example below shows the advantages offered by Welltherm Infrared heating systems after they replaced out-dated night storage heaters. More saved space, a good room climate and feel-good atmosphere as well as the attractive, inconspicuous design of the heating systems are only a few of the improvements. Look and see for yourself!

Example calculation for a 126-square-metre old building – 1974

Modernising an old heating system is always recommended if it has become uncomfortable in everyday life compared to modern heating systems and/or has become expensive to maintain. Hundreds of thousands of residences built in the 1970s and 1980s can be classified as “buildings with inefficient heating system” because of their underfloor heating or built-in night storage heaters.

We have calculated this using the example of an estate house that was constructed in 1974 with 126-square-metre living space, without energy-related renovation.
Conclusion: These houses can also be heated economically, if one uses Welltherm’s modern infrared heating technology.

Thanks to Welltherm infrared heating systems, the installation power could be reduced from 28,000 Watt to 9,430 Watt = -66.3 %
The above example shows you the potential for cost savings that Welltherm infrared heating systems offer after replacing outmoded night storage heaters. Apart from the attractive, inconspicuous design of the heating systems, the living space that was gained and a pleasant room climate with less house dust further add to your living comfort. Look and see for yourself!

Energy-efficient renovations – with Welltherm infrared heating system

We have already demonstrated the enormous energy-saving potential when exchanging old night storage heaters against modern Welltherm infrared heating systems. But how about the necessary investment costs and the expected annual operating costs? We are pleased to show you the details here as well:

In order to heat the house in the example with its 126-square-metre living space year-round to 22 ºC, the cheapest version would necessitate investments in the amount of approx. EUR 11,754.00. This is comprised of costs for the infrared heaters (EUR 7,404.00), costs for the controls (EUR 1,750.00 ), as well as the costs of installation by an electrician (EUR 2,600.00).

If one were to offset the running costs against each other, the operating costs (electricity costs) for the old night storage heaters are 5,443.20 euro/year – while the reduced energy consumption of the infrared heaters results in only 2,395.01 euro/year. Thus there are annual potential savings of EUR 3,048.19 – provided both systems heat the building to the same temperature. Quite often, in order to save money, old buildings with night storage heaters are not heated adequately. This circumstance was not taken into account in the calculation. A fair cost comparison naturally requires comparable room temperatures for both heating systems.

The necessary total investment costs of EUR 11,754.00 have amortised after 3.9 years because of the lower operating costs. In our example, you will be saving EUR 3,048.19 every year from the 5th year after retrofitting an efficient infrared heating system.

In the following you will see a graphic representation of the amortisation of the investment costs using the example from 1974 and the building from 1994. All prices listed have been determined and calculated very carefully. If you require an amortisation calculation for a particular property, it is necessary for one of our technical consultants to conduct an individual evaluation.