questionnaire for preliminary analysis of the...

This project receives funding from the Horizon

2020 European Union Research and Innovation

Programme under Grant Agreement No. 695169

Questionnaire for preliminary analysis of the building stock

Project Title:

EmBuild - Empower public authorities to establish a long-term strategy for mobilizing investment in

the energy efficient renovation of the building stock

Grant Agreement No. 695169

Deliverable No. 3.1 – Questionnaire for preliminary analysis of the building stock

Work package leader: eza!

NOVEMBER 2016

Ref. Ares(2016)6419751 - 15/11/2016

Empower public authorities to establish a long-term strategy for mobilizing

investment in the energy efficient renovation of the building stock

I M P R I N T

This document is issued by the consortium formed for the implementation of the EmBuild project

under Grant Agreement N° 695169 by the following partners:

GIZ - Deutsche Gesellschaft für Internationale Zusammenarbeit GmbH (Germany)

KSSENA - Energy Agency of Savinjska, Šaleška and Koroška Region (Slovenia)

Eza - Energie- und Umweltzentrum Allgäu gemeinnützige GmbH (Germany)

BPIE - Buildings Performance Institute Europe ASBL (Belgium)

NALAS - Network of Association of Local Authorities of South East Europe (Macedonia)

TUM - Technische Universität München (Germany)

AE3R - AGENTIA PENTRU EFICIENTA ENERGETICASI ENERGII REGENERABILE PLOIESTI-PRAHOVA ASOCIATIE

(Romania)

UB - UNIVERZITET U BEOGRADU (Serbia)

REGEA - REGIONALNA ENERGETSKA AGENCIJA SJEVEROZAPADNE HRVATSKE (Croatia)

EnEfect - DZZD ENEFFECT GRUP (Bulgaria)

Lead Partner for the compilation of this document

Energie- und Umweltzentrum Allgäu eza! Burgstraße 26 D-87435 Kempten (Allgäu)

Authors of this Report

Felix Geyer (eza!), Lidija Stvarnik, Niko Natek, Živa Vovk, Nejc Jurko (all KSSENA), Catalin Csaszar

(AE3R), Dragomir Tzanev, Kamen Simeonov (both EnEffect), Frank Mischler (GIZ), Milica Jovanovic

Popovic (UoB), Marko Vlainic (REGEA), Mariangiola Fabbri (BPIE)

Disclaimer Neither GIZ nor any other consortium member nor the authors will accept any liability at any time for any kind

of damage or loss that might occur to anybody from referring to this document. In addition neither the

European Commission nor the Agencies (or any person acting on their behalf) can be held responsible for the

use made of the information provided in this document.

This project receives funding from the German Federal Ministry for Economic Cooperation and Development

This project receives funding from the Horizon 2020

European Union Research and Innovation Programme

under Grant Agreement No 695169



Content Introduction ............................................................................................................................................. 4

Workflow ................................................................................................................................................. 4

Priorisation and Selection of buildings ............................................................................................ 5

Step 1: Gather basic information .................................................................................................... 5

Step 2 Analysis of the energy consumption .................................................................................... 8

How to use the questionnaire ............................................................................................................... 11

Data collection ................................................................................................................................... 11

Possible measures / low-cost measures ........................................................................................... 13

Renovation strategy .......................................................................................................................... 15

Renovation strategy on municipal level ................................................................................................ 16

ANNEX: Questionnaire for preliminary analysis .................................................................................... 17



Introduction For the elaboration of a long-term renovation strategy for all buildings of a municipality –

independent on the size of the public body – it is essential to have concrete information about the

buildings owned and used by the public sector. To obtain this information it is necessary to visit

those buildings and complement data that is already available as well as the expertise and knowledge

of public officers. A standardized questionnaire was elaborated by the EmBuild partners to help

experts and non-experts to assess buildings and all energy types (heating, ventilation, cooling and

lighting) used in the building as well as the building envelope.

It is meant to be a check-list for an on-site visit and thereby helps to get a structured overview over

the building. The project-partners of the EmBuild project decided to keep the questionnaire “simple

and easy”, that both experts and non-experts could benefit from it. A structure and a draft report for

a detailed analysis will be developed by the project at a subsequent step. The detailed analysis for a

building can be carried out at a later point, when concrete measures are planned or a municipality

plans a deep renovation of a specific building. As the description of the work-flow will show us, the

detailed analysis with the calculation of the energy losses and the exact calculation of investments

and its profitability can be done later – before the implementation of measures. For the first step, a

rough and fast assessment of the municipal buildings is important to get as much information as

possible about the entire building stock.

Workflow The optimization and improvement of existing municipal buildings gives the opportunity of profitable

energy savings. But before carrying out renovation measures or deep renovations of entire buildings,

an analysis of the building and a planning and calculation of profitability of potential measures is

needed. At this stage decisions on which technology to be used in a future renovation and which

energy type should be considered do not have to be taken into account. These decisions are subject

to a detailed analysis of a specific building.

For an analysis of a higher number of buildings, as it is the goal when elaborating long-term

strategies for an entire building stock of a municipality, a step-wise approach is reasonable. In a first

step, the collection, compilation and the evaluation of the energy consumption of buildings gives an

overview about the energetic performance of the buildings. With the generation of specific values for

the energy consumption and the comparison with reference values, priority buildings can be

identified, ie these buildings that should be prioritized for renovation action from a pure technical

and cost-effective perspective. Political reasoning of favouring one building over another cannot b

taken into account.

The preliminary analysis uses the Excel-meta-data spreadsheet that EmBuild suggests for the

collection and evaluation of the consumption data of the building stock. After collecting and

evaluating the consumption data of the municipal buildings, the selection of priority buildings can be

done. The buildings should be assessed in a simple way by an on-site visit to get a concrete overview

over the possible measures in the single building. The measures can either be low-cost and no-cost

measures that can easily and immediately be implemented, or measures that require investments in

the technical facilities or the building envelope. These measures should be compiled for each

individual building and summarized for the entire building stock. With the compilation of all possible

measures for energy savings, a long-term strategy – taking into account the usual renovation-cycles

that are necessary anyway – can be developed. The basis for the strategy is the overview over the



building stock, the goal for the strategy must be the EU-goal – 80% reduction of CO2-emissions by

2050 and Nearly Zero Energy Buildings.

The detailed analysis of buildings with a low energetic performance and a high savings potential

through a deep-renovation, can be done after the renovation strategy for the municipal building

stock is set up. The long-term strategy gives a time-horizon for the next 30 years. So for buildings that

are apparently in a good state and shape a detailed analysis can be done later – maybe some years or

decades later when the renovation-cycle gives the opportunity to implement energy saving

measures. This approach has the benefit that the effort and the costs for the analysis can be kept low

and the most efficient measures are identified and can be realized within the existing budget.

The workflow of the EmBuild-approach is described in detail as following:

Priorisation and Selection of buildings

For the overview over the building stock, a list of the buildings or entities (if the building consists of

more than one) with basic information is necessary. The EmBuild-project elaborated a template for a

list that can be used to gather the information (see Task 2.4; D 2.5)

Step 1: Gather basic information

Basic data:

o Building ID (if available)

o Name of the building

o Ownership (owned, rented)

o Address – street

o building category

Pre refurbishment date

o year of construction, year of refurbishment

o surface area

o surface area conditioned, heated, cooled

o Heating system (district heating, boiler, heat pump etc.)

o Main source for heat (natural gas, oil, wood etc.)

o Connection to a district heating network

The EmBuild Metatable allows entering additional information that may be available. This however is

not compulsory for the first steps of the assessment of buildings. Additional information that might

be helpful for the development of a renovation strategy includes the following:

Documentation and costs

Financing

Post refurbishment data

Comments

The basic information can be recorded in table Nr. 1 “basic data” of the Metatable1.

Not all data will be available from the beginning, so columns and cells can be left empty at a first

stage and can be filled within the progress of a project with a municipality.

1 See EmBuild Deliverable 2.5




Metatable Example Pilot Municipality Mindelheim Part 1

Num

ber

I.D.

Building Owner Adress building categoryYear of

construction

Area in

m2

Conditioned

area in m2Heating system

Main energy source

for heat

Connection to

district heating

network

1 Bücherei Kulturelle Einrichtung 663m² natural gas

2 Freibad Anlage - Freibad 1751m² natural gas

3 Mittelschule Schulhäuser 7680m² x

4 Knabenschule Schulhäuser 1240m² x

5 Grundschule Schulhäuser 5700m² x

6 Turnhalle und Hallenbad Hallenbad x

7 Turnhalle über Hallenbad Turnhalle x

8 Turnhalle Brennerstr.4 Doppelsporthalle Turnhalle 1970m² x

9 Forum Versammlungsstätte 2900m² x

10 Kiga Chr.-Scheiner Soziale Einrichtung 1342m² natural gas

11 Kiga Luxenhofer Soziale Einrichtung 1300m² natural gas x

12 Kläranlage Werkhöfe 3289m² natural gas

13 Musikschule+VHS Schulhäuser 1300m² natural gas

14 Rathaus Verwaltungsgebäude 1317m² natural gas

15 Unteres Tor Stadtarchiv electric energy

16 A.d. Schule 9, Nassenb. Grundschule und Betriebswohnung oil

17 Am Anger 3 - 7 Wohngebäde single stoves

18 Bahnhofstr. 34 Wohngebäde natural gas

19 Bauhof mit Wasserwerk Städtischer Bauhof mit 2 Wohnungen wood chips and oil

20 Daimlerstr. 1 Wohnungen

21 Daimlerstr. 1a Obdachlosenheim

22 Einlasstor WC und Wohnungen

23 Feuerwehrhaus Mindelheim Feuerwehr mit 2 Wohnungen natural gas

24 Feuerwehrhaus Nassenbeuren Feuerwehrhaus, Gymnastikraumund Musikerheim oil

25 Feuerwehrhaus Oberauerbach Feuerwehrhaus

26 Feuerwehrhaus Unterauerbach Feuerwehrhaus electric energy

27 Friedhof Landsberger Str. Leichenhalle und Gerätehaus electric energy

28 Frundsbergstr. 2 Friseursalon und eine Wohnung oil

29 Homannstr. 4 Kindergarten Frühförderung natural gas

30 Hopitalstiftung Wohn- und Geschäftsanlage natural gas

31 Imhofgasse 1 mit Gefängnisturm Büro und kl. Versammlungsraum natural gas

32 Landsberger Str. 7 Blumenladen electric energy

33 Lautenstr. 7 Verwaltungsgebäude natural gas

34 Memminger Str. 2 Laden und 2 Wohnungen oil

35 Mindelau "Alte Schule" Feuerwehrhaus, Gymnastikraum und 1 Wohnung liquefied gas

36 Mindelau Bürgerhaus Vereinsheim und Feuerwehrhaus wood pellets

37 Mindelburg - Hauptburg Druckerei oil

38 Mindelburg - Gesindehaus Bürogebäude oil

39 Mindelburg - Benefiziatenhaus Bürogebäude oil

40 Mindelmähderweg 17 Betriebleiterwohnung Klärwerk natural gas

41 Musikerheim, Tiergartenstr. 8 Vereinsheim natural gas

42 Peter-Dörfler-Str. 35 Wohngebäde oil

43 Silvesterkirche Uhrenmuseum, Silvestersaal natural gas

44 Sportheim, Mühlweg 7 Vereinsheim oil

45 Steinstr. 20 Soziale Einrichtungen natural gas

46 Tennisheim, Tiergartenstr.2 Vereinsheim natural gas

47 Tiergartenstr. 4 - Altes Wasserwerk Wohngebäde und Technikkeller natural gas

48 Tiergartenstr. 9a Gaststätte

49 Wertstoffhof natural gas

50 WC - Anlagen electric energy

Basic Data Pre refurbishment data

connected to

district heating

wih 2 CHP und

2 boilers NG for

peak load1360m²

natural gas



Metatable Example Pilot Municipality Mindelheim Part 2

The pictures show the example of the Metatable from the Pilot Municipality of Mindelheim. At the present stage of the work with the municipality, there

is no additional information about documentation & costs, financing and post refurbishment data available, so the table is left blank in this section.

Energy

Certificate

Detailed

energy

audit

Building

permit

Estimated

energy savings

for heat in

kWh/p.a.

Estimated

electricity

savings in

kWh/p.a.

Estimated

investment

costs in EUR

Main area of

refurbishment

Year of

refurbishment

Total cost of

refurbishment

in EUR

Financing scheme

(ESCO, own

sources, etc..)

subsidiesown

participation

Simplified

payback period

for investment

other/

comments

Use of Heat (in

Kwh/p.a)

Use of

electricity (in

kWh/p.a.)

Actual energy

savings of Heat

(in kWh/p.a.)

Actual electricity

savings (in

kWh/p.a.)

Documentation & Costs Financing Post refurbishment data




Step 2 Analysis of the energy consumption

After the collection of the basic data, an analysis of the energy consumption of the buildings should

follow. The data about energy consumption is usually available at the municipal level. While some

have elaborated data-bases about all buildings energy consumption, some municipalities have

monthly recordings of the meters and others don`t keep track of energy consumption. For the latter,

the annual energy consumption can be identified by the yearly bills that should be available at the

financial department.

For the analysis of the energy consumption of an individual building the following information should

be gathered and be compiled in the second segment of the Metatable:

Heat consumption in kWh per year

Electric energy in kWh per year

With this data about the energy consumption, specific values can be calculated and be compared

with reference values from existing building benchmarks. The specific values of energy consumption

indicate the energetic performance of a building independent from the size of the building. With the

break-down to the consumption per square-meter of conditioned surface area, buildings of different

sizes but of the same use or category can be compared.

To keep the Metatable and the first step of building analysis simple and manageable – also for non-

experts – no climate correction for the heat consumption is performed. This clearly causes

impreciseness in the analysis, but speeds up the process and keeps it manageable for persons that

are not too deep in the field of energy-management.

The specific values of the buildings will now be compared to reference values of buildings of the

same category and use. In each country, there should be certain benchmarks and reference values

from building typologies available that can be the basis for the assessment of the buildings.

Reference values are generated from a monitoring of the energy consumption of existing buildings.

There are different organizations that make surveys to generate benchmarks and reference values.

For Germany typical sources for benchmarks are:

AGES Gesellschaft für Energieplanung und Systemanalyse mbH

AGES-study from 2005; analysis of 25.000 non-residential buildings

Bekanntmachung der Regeln für Energieverbrauchswerte und der Vergleichswerte im

Nichtwohngebäudebestand; federal ministry of economics and energy

European energy award

The benchmarks usually provide an average value and a target value. For the analysis, the target

value should be used.

If there are no reference values for certain building categories available, the legislative framework

can serve as a basis: in most countries quality criteria for new buildings is defined. There the Energy

Class A, or respectively the class for new buildings should be used.




In the next step, the deviation of the specific values from the specific values of the existing benchmarks or reference values is calculated. This gives an

impression of the energetic performance of the buildings. They are compared with existing buildings of the same type and use.

To illustrate how this simple comparison with a reference value works, take the example of a school. In Mindelheim, three schools were part of the

preliminary analysis (Number 3, 4 and 5 in the table above). For primary schools in Germany, the reference value for heat is 87 kWh/m2/a and for

electricity its 8 kWh/m2/a (for secondary schools the reference values are 92 kWh/m²a and 6 kWh/m²a). We now simply compare how the current heat

and electricity consumption of the buildings differ from this reference value. As for heat, we see that schools number 3 and 5 use much less than the

reference, while school No4 (Knabenschule or boy’s school) is slightly above the value. For electricity, all three schools consume more than the reference

building, with schools number 3 and 4 even using double the aspired value.

Num

ber

I.D.

Building Type/Purposereference

value heat

reference

value

electric

energy

Conditioned

area in m2

Heat

consumption

(kWh/a)

2014

specific heat

consumption

(kWh/m2a)

difference from

average value

heat

electric

energy

(kWh/a)

2014

specific electric

consumption

(kWh/m2a)

difference

from average

value

electricity

Other / Comments

2 Freibad Anlage - Freibad 300 100 1.751 m² 541.000 kWh 309 3% 48.000 kWh 27 -73% Verbrauch 2007

3 Mittelschule Schulhäuser 87 8 7.680 m² 247.900 kWh 32 -63% 162.120 kWh 21 164%

4 Knabenschule Schulhäuser 87 8 1.240 m² 112.460 kWh 91 4% 21.514 kWh 17 117%

5 Grundschule Schulhäuser 92 6 5.700 m² 196.300 kWh 34 -63% 40.375 kWh 7 18%

6 Turnhalle und Hallenbad Hallenbad 450 200 1.360 m² 677.900 kWh 498 11% 173.293 kWh 127 -36% BHKW läuft nicht?

8 Turnhalle Brennerstr.4 Doppelsporthalle Turnhalle 83 8 1.970 m² 102.000 kWh 52 -38% 25.965 kWh 13 65%

9 Forum Versammlungsstätte 76 80 2.900 m² 266.400 kWh 92 21% 213.846 kWh 74 -8%

10 Kiga Chr.-Scheiner Soziale Einrichtung 89 8 1.342 m² 96.340 kWh 72 -19% 10.943 kWh 8 2%

11 Kiga Luxenhofer Soziale Einrichtung 89 8 1.300 m² 126.000 kWh 97 9% 9.950 kWh 8 -4%

14 Rathaus Verwaltungsgebäude 71 11 1.317 m² 148.000 kWh 112 58% 48.000 kWh 36 231% Verbrauch 2007

15 Unteres Tor Stadtarchiv m²

16 A.d. Schule 9, Nassenb. Grundschule und Betriebswohnung m²

17 Am Anger 3 - 7 Wohngebäde

18 Bahnhofstr. 34 Wohngebäde m²

19 Bauhof mit Wasserwerk Städtischer Bauhof mit 2 Wohnungen m²

20 Daimlerstr. 1 Wohnungen m²

21 Daimlerstr. 1a Obdachlosenheim m²

Basic Data




The deviation of the specific values will be displayed in percent [%] and can be visualized in a

diagram. The diagram (Portfolio-Analysis) shows the deviation of the heat consumption on the

horizontal axis and the deviation in electric energy consumption on the vertical axis. The size of the

bubble represents the conditioned surface area of the building. If a building is in the upper right

sector of the diagram – indicated with a red square, it is a “priority building” that should be analyzed

first.

Example of Portfolio-Analysis of Pilot Municipality Mindelheim

The Portfolio Analysis shows, that the Rathaus has a higher specific value in heat consumption (58 %)

and electric energy (231 %) compared to reference values. The Knabenschule (boys’ school) has a

higher specific electric energy consumption (117 %) than the reference values. The biggest buildings

by means of surface area are the Mittelschule (secondary school) and the Grundschule (primary

school) and therefore should also be assessed.



How to use the questionnaire After selection of the priority buildings in a municipality, the buildings should be inspected to get

essential knowledge that is necessary to elaborate a long-term renovation strategy. For the on-site

visit of buildings, the EmBuild project developed a report for a preliminary, fast and rough, analysis of

the building. The report merely is a checklist that helps the experts to gather the relevant

information. It has three sections: data collection, reporting of possible measures and a renovation

plan for the single building. To fill in the report, information is necessary that comes from the

inspection of the building – following the way of the energy – and maybe useful information from the

person responsible for caretaking and maintenance. In the next sections, the use of the

questionnaire is described, using the results and findings from one pilot municipality.

Data collection The basic idea of the report is, to follow the way of the energy through the building. Starting from

the tank or the inlet of the energy carrier, to the boiler and heat generation, to the heating circuits

and the distribution in the building. Going on to the heating system in the rooms, the ventilation and

cooling. The domestic hot water generation is also in the focus as the quality of the building

envelope. The reports guides the way through the building and gives examples for the possible

equipment. With the traffic-light-like colors, it indicates if the existing infrastructure and building

construction is energy-efficient (green), if it is acceptable (orange) or if there is need for action (red).



Example for data collection on-site, pilot municipality



Possible measures / low-cost measures The second section of the preliminary analysis is to report possible measures that can be

implemented to improve the energetic performance of the building. These measures can either be

low- or no-cost measures or investments in the technical facilities or the building envelope. For the

low- and no-cost measures, the EmBuild project collected typical measures in the sectors:

Ventilation

Cold and hot water

Electric lighting

Heat generation

Heat distribution

Heat delivery

Electricity

Small measures for the building envelope

Cooling

Water saving

Awareness raising

The generic catalogue of low- and no-cost measures generally has the structure to define a “starting

point” to explain what it is about, the definition of the explicit question (“what’s the problem?”), a

recommendation what to do and indicates for which kind of buildings this measure is applicable. The

catalogue can be used as an inspiration when assessing the buildings and the texts can be used when

writing the report for the single building. Besides low- and no-cost measures, the expert could find

out other possible measures that should be documented in the report, too.



Renovation strategy The third block within the assessment of the priority buildings is to develop a recommendation for a

long-term renovation strategy for the building. It is a long-term view about what to in the coming

years and decades. The renovation strategy should take into consideration:

The low- and no-cost measures identified

Possible measures to enhance the energy efficiency of the building

Upcoming renovation cycles, depending on the life-span of components

e.g. technical infrastructure 20 years, windows 30 years etc.

The long-term strategy should indicate which component should be refurbished in which timeframe.

What are the costs and the estimated saving? This information can be displayed in a table at the end

of the document. All strategies for the single buildings can then be compiled to a renovation strategy

for the municipality, indicating measures and the savings according to the EU-goal.



Renovation strategy on municipal level

After assessing all buildings or at least all priority buildings, the results should be compiled to give a

long-term view for the municipality. The identified measures and the optimal time for

implementation of the measures can be aggregated in one table. This can be the long-term vision for

a municipality to plan the budget and work of the building department. A graphical visualizsation

helps to control if the EU-goals can be reached.

time building measure costs savings [%] savings [kWh]

until 2020 all low cost measures 2.000 € 10% 27.400 kWh

Rathaus replacement of windows 80.000 € 15% 22.000 kWh

Kiga Luxenhofer Str. insulation cellar ceiling 2.400 € 3% 3.780 kWh

2020 - 2030 Rathaus new boiler and heat circuit pumps 8.600 € 5% 7.400 kWh

Kiga Luxenhofer Str. insulation exterior walls 187.500 € 40% 50.400 kWh

new windows 40.000 € 10% 12.600 kWh

new tiles, improve insulation 96.000 € 20% 25.500 kWh

option: ventilation 20.000 €

2030 - 2040 Kiga Luxenhofer Str. replace heat transfer station 5.000 € 3% 3.150 kWh

new heating circuit pumps 2.400 € 5% 500 kWh

2040-2050 Rathaus deep renovation: walls and roof 745.000 € 60% 90.000 kWh

option: ventilation 50.000 €

total savings 242.730 kWh

savings % 73%



ANNEX: Questionnaire for preliminary analysis

Building:

year of construction: building / technical infrastructure

building type: e.g. administration building, school

energy carrier for heat: oil / natural gas / electric energy …

type of heat supply:

☐ single stoves

☐ constant temp.

boiler

☐ low temp. boiler ☐ condensing boiler

☐ heat pump

☐ CHP

☐ district heating

age: ☐ > 20 years ☐ 10 – 20 years ☐ < 10 years

heating system: radiators, floor heating, ventilation with heating etc.

heating circuit pumps: ☐ unregulated

multi-level

☐ with electronic

control

☐ high-efficient pumps

insulation of heating pipes : ☐ none

with voids

☐ sufficient ☐ good

control and regulation

system:

☐ faulty broken

☐ hard to operate

☐ ok, but no

documentation

(available)

☐ central control

☐ single room control

☐ building control system

heating times adapted to

building use

☐ no ☐ unknown ☐ yes

heating curve adapted to

the standard of the

building:

☐ no ☐ unknown ☐ yes

hydraulic balanced system: ☐ no ☐ unknown ☐ yes

ventilation: with windows, mechanical etc.

Mechanical ventilation:

□ no heat recovery □ no maintenance □ no automatic control

□ heat recovery

< 60% efficiency

□ cleaning or

changing filters

□ simple automatic

control

□ heat recovery

> 60% efficiency

□ periodical professional

maintenance

□ automatic frequency control

Cooling

□ SEER<2.5 □ automatic controled by temperature

□ 2.5<SEER<3.5

□ automatic control by

temperature and

occupancy schedule

□ SEER>3.5

□ automatic control by

temperature – limited range,

occupancy schedule and open

windows

domestic hot water: ☐ none ☐ decentral ☐ central ☐ circulation



exterior walls: type of construction, masonry, concrete, wood…

☐ without insulation ☐ with insulation

windows: ☐ single glazing ☐ twin pane

glazing

☐ heat protection

glas

☐ triple glazing

top floor ceiling / roof: ☐ without insulation ☐ with insulation

cellar ceiling: ☐ without insulation ☐ with insulation

lighting system: ☐ filament lamps ☐ energy saving

lamps

☐ fluorescent lamps

☐ LED

responsible person: ☐ no ☐ yes ☐ expert, energy manager

energy monitoring: ☐ no ☐ yes ☐ monthly

energy passport issued: ☐ no ☐ yes

potential for low- and no-cost

measures: ☐ high potential ☐ fair ☐ low potential

Noticable Problems / reccommendation:

The noticeable problems / recommendation can be written down in free text as the following example:

Check heating parameters

“starting point”: When the building is not used, the room temperature can be reduced. The reduction of the room temperature is the “night setback”. It must be adapted to the use and the standard of the building.

“what`s the problem here? The night setback from 24°C to 14°C is relatively high with 10°K. If the setback ist too high, the re-heating needs more energy than the reduction of the temperature saves.

recommendation: We recommend to reduce he night setback to 6°K as well as the day temperature We suggest a range from 22°C – 16°C



Recommendation for long-term renovation steps:

component description time costs savings

Cellar ceiling

Exterior walls

Windows

Roof

Top floor ceiling

heat generation

(Boiler etc.)

heat distribution

(pumps etc.)

ventilation

questionnaire for preliminary analysis of the...

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