Affiliate Literature - Retrofit

	Publication	Year	Organisation
	A Retrofit Costs Comparison We know that deep retrofit is a proven route to achieving net zero targets, tackling fuel poverty, and improving occupant health, but how much ill we need to spend on it – and what kind of retrofit can we afford? This research report, commissioned by the Passivhaus Trust and conducted by AtkinsRéalis, analyzes real-world social housing data to provide a transparent comparison of retrofit costs across different approaches to the challenge, including EnerPHit, Energiesprong, and AECB CarbonLite.	2026	Passivhaus Trust (PHT), UK
	The right time for heat pumps in retrofit This paper explores the implications of installing an air source heat pump at different levels of fabric improvement by modelling some typical light and deep retrofit scenarios, using PHPP to estimate energy demand & running costs.It aims to answer the question: When should you install a heat pump in a staged retrofit? It helps clients and designers to make informed decisions in developing an optimum retrofit plan.	2024	Passivhaus Trust (PHT), UK
	Technical Guidance - Moisture and EnerPHit This paper introduces the challenges around moisture risk that must be borne in mind when tackling any retrofit project, and is essential reading for designers, as well as clients who are looking to inform themselves of the key issues and factors that will influence the project. While not intended as a comprehensive or prescriptive guide, it provides a useful starting point for applying a best practice approach, and also gives pointers towards further resources and training for those interested in developing their expertise.	2023	Passivhaus Trust (PHT), UK

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See also