For most people, the clean heat transition is about warm living rooms in cold months and affordable bills, not carbon budgets or statutory targets. The Warm Homes Plan (WHP) is a major opportunity to accelerate the transition to clean, affordable home heating. The ambition is right, but the critical question now is delivery and ensuring the plan’s open questions are met with practical solutions that work in homes and communities.

At Nesta, we see heat pump installations as a major opportunity to cut bills and emissions. Yet success depends on trust, not just hardware. For heat pumps to become the new normal, homeowners need confidence that systems will work, cost less to run, and they need a safety net if things go wrong. Consumer protection is a cornerstone of a fair heat transition, not a technical detail.

The WHP centers on high-volume delivery backed by oversight. Its pillar is the Warm Homes Agency (WHA), launching in 2027 with £15 billion. This body will streamline home upgrades while providing a comprehensive consumer safety net.

Key commitments that deliver consumer protection are as follows.

• Centralised oversight: The UK government will consult on bringing the oversight of microgeneration installations, including heat pumps, under closer government control to fix the current fragmented landscape. This aims to avoid the systemic faults of past insulation schemes, such as the most recent iteration of the Energy Company Obligation scheme (ECO4) where 92% of external wall insulation installations showed major non-compliance, which resulted in massive remediation costs and accountability gaps.
• Empowering households: The WHA provides a single point of contact for vetted installers, funding advice, and quality assurance across all housing tenures.
• Standardisation: Mandating the Microgeneration Certification Scheme (MCS) as the sole certifier for clean heat measures clarifies the process. Replacing the previous landscape of overlapping bodies reduces consumer confusion and administrative burden.
• Accessible advice: By 2027, the WHA will launch a digital and phone service to provide the impartial “national spine” for consumer advice, currently missing. Consolidating functions from Salix, Ofgem, and local schemes will link households with trusted installers, reducing the risk of consumers being misled by technical complexities they may find unfamiliar.

Ambition is clear, but the path to clean heat is rarely straightforward. Recent research shows current standards are too complex, leaving homeowners without clear recourse or financial protection when installations fail.

Several critical questions remain to be addressed.

• Performance accountability: How do we move beyond "paper-based" compliance to ensuring real-world efficiencies? Standards, monitoring and complaint processes must be clear and accessible to provide homeowners with genuine financial protection when systems underperform.
• Balancing rigour and speed: How can the UK government cut red tape via MCS 2025 without diluting consumer protections? Stricter standards risk shrinking the installer pool, potentially increasing costs and wait times amidst an existing sector labor shortage.
• Redress in practice: The plan holds installers responsible for remediating faults, but offers little clarity for when they go insolvent, a common risk in the retrofit sector. Effective protection requires a “last resort” fund rather than relying on hard-to-claim insurance guarantees. True safeguard must also protect homeowners from predatory practices and hidden costs, not just technical failures.
• Affordability as protection: Technical compliance is hollow if running costs are unmanageable. Currently, policy costs unfairly penalise electric heating over gas. While the WHP estimates an average home could save £130 annually through a heat pump upgrade paired with a time-of-use tariff, the question remains: what will be put in place to ensure that most homeowners actually see such a decrease in their bills?

To turn ambition into impact, Nesta recommends four priorities for the UK government and the WHA.

1. Prioritise real-world data: Explore the viability of shifting to performance-based protection using sensors and smart meter data to identify underperforming systems automatically.
2. Test solutions early: Use rapid piloting to evaluate the digital advice platform before a national rollout. Testing must ensure the digital-first approach includes the millions of digitally excluded or elderly households, determining the level of human-to-human support required for a truly inclusive service.
3. Enhance installer transparency: Helping households choose high-quality installers through verified reviews and testimonials is essential. This model is already proven in Scotland via the Energy Saving Trust’s Renewables Installer Finder and should be replicated nationally.
4. Equip installers for success: Retraining thousands of gas engineers requires an attractive, low-friction path to certification. As the primary interface for homeowners, installers must be supported to overcome current consumer skepticism and deliver a high-quality transition.

The WHP is a vital step forward, but the rush to install must not compromise the consumer experience. Nesta is already addressing these challenges; for instance our partnership with Bristol City Council identifies real-world barriers in social housing to improve both heat pump performance and resident satisfaction.

By combining impartial advice with enforceable protections, the UK can transform clean heat from a technical risk to a safe, easy choice for every home. The WHP must ensure that when a household switches, they do so confident that their heating is reliable, their bills are fair, and the system simply works.