Retrofitting homes is central to the UK’s push to reduce energy use, cut carbon and support low-income households. Despite this, reaching the residents who are eligible for schemes like ECO4 remains a significant challenge.
Many households are difficult to contact, unclear about what support is available, or hesitant to engage through digital channels alone. Below we’ll look at why communication is often one of the biggest barriers for providers, the limitations of digital-only outreach, and why physical mail continues to be a powerful tool for engagement.
Retrofitting a home simply means improving its energy efficiency, whether through insulation, heating upgrades, better ventilation or renewable technologies. Schemes like ECO4, which supports low-income and vulnerable households with funded efficiency improvements, are designed to make these upgrades more accessible. With UK housing among the least energy-efficient in Europe, and around 80% of the homes that will be occupied in 2050 already built, large-scale change is necessary.
Alongside ECO4, programmes such as the Great British Insulation Scheme, Warm Homes funds and various local authority initiatives all aim to help residents reduce energy use and create healthier homes. Unfortunately, across every scheme, the same challenge persists - identifying the right households and engaging them effectively so they feel informed, supported and confident.
Despite the scale and ambition of schemes like ECO4, their success ultimately hinges on engaging the right households, which is where many programmes struggle. A significant number of eligible residents have limited digital access, face language barriers or are simply wary of unsolicited messages, making them difficult to reach through online channels alone. Research shows people who are digitally excluded are more likely to be on low incomes, older, or socially isolated - the very households retrofit programmes aim to support.
Emails, web forms and digital ads often miss those who are most in need, and with rising scam awareness, many residents may even be inclined to ignore anything that claims to offer “free insulation” or energy upgrades, falsely believing this is too good to be true. In reality, the biggest obstacles aren’t the retrofit measures themselves - it’s communication. Reaching households with clarity, reassurance and trust is essential, and digital-only approaches can’t always deliver that on their own.
With hybrid mail solutions, retrofit teams can send personalised, targeted letters directly from a desktop or CRM without needing to print or post anything onsite. This makes it simple and affordable to deliver timely follow-ups, survey reminders and regular updates, helping organisations reach residents reliably and consistently while reducing pressure on internal teams.
The impact is highlighted within MarketReach research, which found that 87% of people consider mail to be believable, compared with just 48% for email. Physical letters remain an effective way to build trust and prompt action, especially when communicating something as important as maintenance to a home. With options such as custom envelopes for instant recognisability and accessible formats tailored to diverse resident needs, mail can provide a communication solution that’s both effective and inclusive.
Letters carry a sense of credibility and legitimacy, particularly when communicating government-backed schemes or invitations to take part in funded retrofit programmes. They offer the space to clearly explain eligibility, outline the next steps and confirm survey appointments in a format residents trust. Physical mail also supports accessibility needs through translations, large print and simplified layouts, ensuring information is easy to understand for every individual in every household.
CFH’s communication solutions offer a straightforward way to reach eligible households with clear, trustworthy information. Through Docmail, our secure hybrid mail platform, teams can send personalised letters, reminders and updates directly from their desktop or system - ideal for keeping residents informed at every stage of the retrofit journey.
For organisations managing higher volumes or multi-stage campaigns, CFH Managed offers a fully outsourced communication service that takes care of everything from production to postage. With strong data security and flexible formats, we help retrofit companies drive better engagement and keep projects running smoothly from first contact to completion.
Keen to learn how we work within the housing sector? Click through to our dedicated page for detailed information and case studies.
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