Wärmepumpe oder Gas?

Die Wärmepumpe ist 2026 in Neubau und gut gedämmtem Altbau fast immer die wirtschaftlich bessere Wahl — bei einem COP ≥ 3 und KfW-Förderung bis zu 70%.

Wärmepumpe im Altbau — funktioniert das?

Ja, wenn die Vorlauftemperatur unter 55 °C bleibt. Entscheidend: Heizkörperdimensionierung und Dämmstatus — nicht das Baujahr.

Wärmepumpe mit PV kombinieren?

Ja — Eigenverbrauchsanteil von 60–80 % senkt Betriebskosten um 30–50 %. Amortisation typisch 10–14 Jahre inkl. Förderung.

Holzfaserdämmung oder EPS?

Holzfaser kostet 20–40 % mehr, liefert aber 3–5× besseren sommerlichen Wärmeschutz und eine positive CO₂-Bilanz — bei EPS ist sie negativ.

Lehmputz oder Gipsputz?

Lehmputz kostet ca. 20–40 €/m² mehr, reguliert Feuchte aktiv und bindet VOC — messbar bessere Raumluftqualität für Allergiker und Kinder.

Ist Strohbau sinnvoll?

Ja — mit ETA-Zulassung, zertifiziertem Verarbeiter und korrektem Feuchteschutz. Brandschutz ist gelöst; Herausforderung ist die Fachkraft-Verfügbarkeit.

Holzhaus oder Massivhaus?

Holzhaus ist 15–25 % schneller fertig, CO₂-negativ und modular erweiterbar. Massivhaus punktet bei Schallschutz und lokaler Handwerker-Verfügbarkeit.

Sanieren oder Abriss + Neubau?

Sanierung erzeugt 2,4× weniger graue Emissionen als Neubau. TCO-Vorteil in 80 % der Fälle — außer bei Bausubstanzmängeln unter Bodenplatte.

Kita in Holz oder Beton?

Holz-Kita ist 25–30 % schneller fertig, KfW-kommunal-förderbar und bei Holzbauoffensive-Ländern bevorzugt — Brandschutz HO4 ist bei mehrgeschossigem Bau zu prüfen.

Was kostet nachhaltiges Bauen wirklich?

Mehrkosten: 8–15 % gegenüber konventionell. Mit KfW+QNG-Förderung: 3–7 % Netto-Mehrkosten. TCO über 50 Jahre: nachhaltiger Bau 18–22 % günstiger.

KfW 40 NH oder KfW 40?

KfW 40 NH (mit QNG-Siegel) bringt 12,5 % mehr Tilgungszuschuss — lohnt sich ab ca. 200.000 € Kreditvolumen. Mehraufwand: ca. 3.000–5.000 € für Zertifizierung.

In welcher Reihenfolge Förderantrag stellen?

BEG-Antrag muss VOR Auftragsvergabe gestellt werden — nicht vor Baubeginn. Diese Verwechslung kostet jährlich Tausende Bauherren ihre KfW-Förderung.

BAFA oder KfW — was ist besser?

BAFA (BEG-EM): Einzelmaßnahmen, direkter Zuschuss, keine Kreditaufnahme. KfW (BEG-WG): Komplettsanierung, günstiger Kredit + Tilgungszuschuss bis 45 %. Kombi möglich.

Gilt die Solardachpflicht für mein Gebäude?

Ja, bei Neubau in 11 Bundesländern und Dachsanierungen ab bestimmten Schwellenwerten. Ausnahmen: Dachneigung <15°, Verschattung, Denkmalschutz.

Problem Graph Engine | GreenBuild360 Graph

Problem Graph Engine on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.

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AI Content Factory — AIContent Factory on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
AI Knowledge Graph — AIKnowledge Graph on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
AI Market Intelligence — AIMarket Intelligence on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
AI Opportunity Command Center — AIOpportunity Command Center on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
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Analysis Board — Analysis Board on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
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Authority Dominance Engine — Authority Dominance Engine on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
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Bauanfrage Simulator — Bauanfrage Simulator on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
Building Advisor — Building Advisor on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
Building System OS — Building System OS on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
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Compare — Compare on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
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Competition2035 — Competition2035 on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
Content Dominance Map — Content Dominance Map on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
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Decision Audit — Decision Audit on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
Decision Center Pilot — Decision Center Pilot on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
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Entity Detail — Entity Detail on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
Evidence — Evidence on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
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Faq Generator — Faq Generator on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
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Future Building OS — Future Building OS on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
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Future Market Engine — Future Market Engine on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
Future Systems — Future Systems on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
Gesetze Und Foerderung — Gesetze Und Foerderung on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
Go Live Check — Go Live Check on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
Goal Intelligence — Goal Intelligence on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
Green Build Knowledge — Green Build Knowledge on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
Household Economics — Household Economics on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
Knowledge Domain Hub — Knowledge Domain Hub on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
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Lead Engine — Lead Engine on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
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Login — Login on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
Low Tech Library — Low Tech Library on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
Manufacturers — Manufacturers on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
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Operating System — Operating System on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
Partner Intelligence — Partner Intelligence on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
Partners — Partners on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
Phase11 Dashboard — Phase11Dashboard on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
Phase5 Dashboard — Phase5Dashboard on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
Phase6 Dashboard — Phase6Dashboard on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
Phase7 Dashboard — Phase7Dashboard on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
Platform Compression — Platform Compression on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
Problem Graph Engine — Problem Graph Engine on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
Problem Solver — Problem Solver on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
Problems — Problems on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
Public Experience — Public Experience on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
Public Layer — Public Layer on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
Question Intelligence — Question Intelligence on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
Reality Check — Reality Check on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
Rebuild Library — Rebuild Library on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
Register — Register on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
Regulatory Future — Regulatory Future on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
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Relations — Relations on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
Research Lab — Research Lab on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
Reset Password — Reset Password on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
Risk Intelligence — Risk Intelligence on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
Solution Detail — Solution Detail on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
Solutions — Solutions on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
Source Intelligence — Source Intelligence on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
Sources — Sources on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
Strategic Positioning Engine — Strategic Positioning Engine on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
System Recherche — System Recherche on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
Trust Proof Platform — Trust Proof Platform on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
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Wiki Index HTML — Wiki Index HTML on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
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Journey Landing — Journey Landing on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
Decision Page Internal — Decision Page Internal on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
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Advisor Leads — Advisor Leads on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
Public Building Advisor — Public Building Advisor on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.
Lead Capture — Lead Capture on GreenBuild360 Graph. A semantic knowledge network for sustainable, circular building solutions, provi.