Our post-installation monitoring service across the UK confirms that your energy improvements are performing as designed and meeting ECO4 and PAS 2035 compliance standards. We monitor system performance, identify issues early and provide reliable evidence that retrofit measures are working effectively.
After installing energy-efficiency improvements such as insulation, heat pumps, solar panels or other retrofit measures, post-installation monitoring confirms the upgrades are performing as designed. It helps verify energy savings, confirm compliance with PAS 2035 requirements and give homeowners, landlords and funding providers confidence that retrofit measures are working effectively.
Verify energy savings — monitoring measures whether insulation, heating systems and renewable technologies are reducing energy use and improving property efficiency
Ensure PAS 2035 compliance — post-installation monitoring is a key requirement within the PAS 2035 retrofit process, confirming completed works meet quality and performance standards
Support ECO4 and retrofit funding compliance — monitoring evidence may be required for schemes such as ECO4, the Social Housing Decarbonisation Fund (SHDF) and other government-supported programmes
Protect your retrofit investment — early identification of performance issues allows problems to be addressed before they lead to higher energy costs or costly repairs
Improve occupant comfort — monitoring helps confirm homes are achieving better warmth, reduced heat loss, improved ventilation and a healthier indoor environment
When is post-installation monitoring required?
Post-installation monitoring checks whether retrofit improvements are delivering measurable energy savings, comfort and performance. It includes energy-usage analysis, system-performance checks, compliance verification and occupant feedback to help measures meet PAS 2035 and ECO4 requirements.
Energy monitoring compares gas and electricity usage before and after retrofit improvements. Historical energy bills, weather conditions and occupancy changes are reviewed to calculate the actual savings and measure reductions in energy costs.
Monitoring evaluates the performance of installed measures such as insulation, heat pumps, solar panels and ventilation systems. Thermal imaging, efficiency checks and performance data help identify issues such as heat loss, poor operation or reduced system efficiency.
Monitoring supports PAS 2035 compliance by confirming that retrofit work meets the required standards. It also provides evidence for ECO4 funding claims, installer certification checks and building regulation requirements, including Part L and Part F.
Monitoring focuses on the homeowner experience by measuring indoor temperature, humidity levels and comfort improvements. Feedback helps identify issues such as draughts, overheating, condensation or incorrect system settings, allowing further optimisation.
Post-installation monitoring follows a structured process to verify that energy-efficiency improvements are performing correctly and meeting PAS 2035 compliance requirements — from initial data collection to final reporting.
We review your retrofit improvements — insulation, heat pumps, solar PV or other energy-efficiency measures — assess your monitoring requirements and confirm any ECO4, SHDF or PAS 2035 monitoring obligations linked to your project.
Before monitoring begins we collect previous energy-usage information, including around 12 months of gas and electricity bills where available. We also review property details, construction type and occupancy patterns, and install monitoring equipment such as temperature and humidity sensors if required.
During installation, quality checks help confirm measures are completed correctly — this may include thermal imaging for insulation checks, airtightness testing where required, and photographic evidence to support PAS 2035 retrofit compliance.
After completion, typically over a 3–6 month period, we assess whether installed measures are delivering the intended results — reviewing energy usage, analysing temperature and humidity data, checking heat pump efficiency, monitoring solar PV generation and gathering occupant comfort feedback.
We provide a detailed post-installation monitoring report covering energy savings, system performance and occupant comfort. Where required, we provide evidence to support PAS 2035 C4 compliance, ECO4 funding requirements and recommendations to optimise system performance.
Post-installation monitoring is recommended for anyone who has completed energy-efficiency improvements such as insulation, heat pumps or solar panels. It verifies performance, supports compliance and confirms that retrofit measures are delivering measurable results.
ECO4 requires post-installation monitoring (the PAS 2035 C4 stage) for most measures. Without it, your ECO4 funding may be at risk.
SHDF and WH:SHF require post-installation monitoring and energy-savings verification — needed for funding drawdown and compliance reporting.
Compliance evidence for client handover: demonstrate that your installation performed as designed and delivered measurable results, and protect against future claims.
Verify EPC improvement and energy-bill reduction for tenants — useful evidence towards MEES compliance.
Verify that your system is performing as expected, identify issues early (low COP, poor generation) and optimise controls for better performance.
The cost depends on the level of assessment required, property type and retrofit measures installed. The figures below are indicative guide prices only.
| Monitoring Service | What’s Included | Indicative Cost |
|---|---|---|
| Basic Monitoring | Energy bill review, energy-usage comparison and desktop performance assessment | £200 – £400 |
| Standard Monitoring | Energy analysis, thermal-imaging checks and occupant-comfort survey | £400 – £700 |
| Comprehensive Monitoring | Energy assessment, thermal imaging, temperature/humidity monitoring, airtightness testing and detailed reporting | £700 – £1,200 |
| Social Housing Monitoring | Multi-property monitoring, performance reporting and compliance documentation | Price on application |
These are indicative guide prices only — your exact cost is confirmed after a free consultation. For projects supported through ECO4, SHDF or other funding schemes, monitoring may be included as part of the overall retrofit funding.
After installing energy-efficiency improvements such as insulation, heat pumps, solar panels or other retrofit measures, post-installation monitoring confirms the upgrades are performing as designed. It helps verify energy savings, confirm compliance with PAS 2035 requirements and give homeowners, landlords and funding providers confidence that retrofit measures are working effectively.
Verify energy savings — monitoring measures whether insulation, heating systems and renewable technologies are reducing energy use and improving property efficiency
Ensure PAS 2035 compliance — post-installation monitoring is a key requirement within the PAS 2035 retrofit process, confirming completed works meet quality and performance standards
Support ECO4 and retrofit funding compliance — monitoring evidence may be required for schemes such as ECO4, the Social Housing Decarbonisation Fund (SHDF) and other government-supported programmes
Protect your retrofit investment — early identification of performance issues allows problems to be addressed before they lead to higher energy costs or costly repairs
Improve occupant comfort — monitoring helps confirm homes are achieving better warmth, reduced heat loss, improved ventilation and a healthier indoor environment
When is post-installation monitoring required?
Yes — most ECO4 retrofit measures require monitoring as part of the PAS 2035 C4 stage to verify performance and compliance.
Site checks usually take 1–2 days, while energy-performance analysis may take several weeks depending on the available data.
Monitoring identifies issues such as insulation gaps, incorrect controls or ventilation problems and recommends suitable solutions.
No — compliance monitoring should be completed by qualified retrofit professionals following PAS 2035 requirements.
No — it applies to insulation, heat pumps, solar PV, ventilation, boilers and other retrofit improvements.
Book a post-installation compliance check today — our team will confirm your retrofit is performing and meeting its funding and PAS 2035 requirements. Call us on 0161 302 1985.
