The article provides information on the activities of the International Centre AIVC (Air Infiltration and Ventilation Centre), which in a new cycle from 2011 to 2013 will focus on the strategy 20-20-20, which oblige EU countries to save energy in buildings. The article explains the structure of the AIVC and its tasks as an international information center, to help not only the AIVC member countries in addressing ventilation in newly built buildings that will have to meet very strict requirements for tightness.

This paper describes the brief analysis of the quality of heat pumps offered in the Czech Republic. It specifies the importance of improving offer based on the evaluation of heat pumps according to the methodology of the European Heat Pumps Association (EHPA).This also includes the basic conditions for awarding the quality of the European Quality Label for Heat Pumps.

National Renewable Energy Action Plans (NREAP) of each EU countries in graphical and tabelar forms. Part three - final energy consumption for heating and cooling and share of RES on the consumption for heting and cooling.

The evaluation of the heating period for the calendar year 2010 is useful for producers and consumers, who work on a January-December regime. It also provides data to energy experts for assessing the operational energy consumption of buildings. It also provides figures for the controlling of boilers, according the Decree 276/2007 Coll.

Based on the observations made at the Prague-Karlov station, the 2009/2010 heating season was a little shorter, 217 days, and the average temperature was 4.3ºC, slightly cooler than the long-term average. The basic characteristic necessary for heating is 3187 dº (19) degree days, so the needs for heating were slightly lower than the long term average.

The article deals with price comparing of the electric energy suppliers in the regions of the Czech Republic. The graphs in the example shows the difference of the prices for tariff rates D02d and D56d.

The article deals with price comparing of the natural gas suppliers in the regions of the Czech Republic. It is clearly shown in the graphs how to save financial costs with the change of the supplier of natural gas - from the expensive to the cheaper one.

Natural ventilation is the usual mode of ventilation of residential buildings. There is no fan. People think, this system has no energy requirements, but continuous air flow causes heat loss by ventilation. This energy consumption is higher then energy for controlled forced ventilation.

Author raises discussion and proposed changes in the rules of the energy audit. Draws attention to the criteria for evaluating alternatives and to small requirements for variability solutions. Read controversy of the author and reviewer who considers the methodology as sufficient and sees a problem in processing audits.

Water consumption in 2009 was significantly lower. Price of water in the CR is already in some regions the same as in Germany. Six of the ten water companies got in r.2009 checks penalty for wrongly calculated the price of water and sewage. Price increase is avoided.