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Conclusion of thermovisual examinations – renovated multi-apartment buildings are much warmer


Last week, under the conditions favourable for thermovisual examinations, the experts of the Housing Efficiency Energy Agency (BETA) inspected several dozen buildings renovated last year and determined that the inspected buildings were much warmer than before the modernisation.

“The results of these thermovisual examinations are obvious evidence of the possibility to save even more than 50% of energy after the modernisation of a multi-apartment building”, says Daiva Matonienė, Vice-Minister of Environment .

During the examination, a special apparatus, a thermal imaging camera, is used to generate images of the external and internal surfaces of a multi-apartment building, and when their temperature is recorded in the images, heat loss areas of the building are determined. The precondition for these examinations is the difference in temperature between the inside of the building and the outside, which should be at least 15–20 degrees.

The BETA experts examined the multi-apartment buildings, which had their thermal images produced before the renovation as well. They tried to inspect the same spots in a building which were diagnosed using a thermal imaging camera before the renovation of the building.

One does not have to be an expert to see the difference between the thermal images of the building generated before and immediately after the renovation. For instance, the building situated at Šviesos St. 2, Anykščiai, was renovated. In its first thermal image produced before the modernisation, one can see with the naked eye the heat loss areas, namely, the spots under the windows, where radiators are installed, and through the walls of the basement. In the current image, uniform blue colour shows that there are no heat losses through the insulated walls. It can be clearly seen that the temperature of all external walls is identical – around 19°C.

Heating bills received by the residents only confirm the results of thermovisual examinations. For example, the first heating bills issued to the residents of the aforementioned building in Anykščiai after the modernisation were two times lower than before.

Public Information Division
14 January 2015

Minister of Environment of Lithuania Kęstutis Navickas
Minister of Environment of Lithuania Kęstutis Navickas