Boiler & Heating
Controls Upgrade
58 Linden Avenue, Birmingham B43 5JU — rated EPC Band E with annual bills of ~£1,737 and an uninsulated hot water cylinder. Simple Green Energy replaced the ageing Baxi Solo boiler with an Ideal Logic Combi2, fitted Radbot 1 zone controls and removed the uninsulated cylinder, lifting the home to Band C and saving £839 every year.
EPC Rating: Band E → Band C
The upgrade moved this property 22 SAP points forward — from a poor-performing Band E to a solid Band C rating, significantly cutting energy costs and carbon emissions.
The Boiler Replacement
The Baxi Heating Solo (66% efficiency) was removed and replaced with an Ideal Logic Combi2 — a direct, visible transformation in heating performance and reliability.
Before
After
Bills, Savings & Boiler Efficiency
*Energy performance modelling based on RdSAP10 assessment. Actual savings vary by occupancy and tariff.
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Ideal Logic Combi2New · post-upgrade89%
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Baxi SoloOld boiler · removed66%
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Radbot 1 ControlsZone control · newSAP 2112
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Hot WaterCylinder removedInstant
The Complete Solution
Three targeted measures worked together to transform energy efficiency at 58 Linden Avenue.
Ideal Logic Combi2 Boiler
A modern condensing combi boiler delivering 89% seasonal efficiency — replacing the old Baxi Solo system boiler running at just 66%.
89% EfficiencyRadbot 1 Zone Controls
Time and temperature zone control (SAP code 2112) fitted throughout, replacing basic TRVs and giving precise room-by-room heating management.
Smart Zone ControlCylinder Removal
The uninsulated hot water cylinder was removed entirely. The new combi boiler delivers instant hot water on demand — eliminating standing heat losses.
No More CylinderHow it was funded: This installation was carried out fully funded under the ECO4 (Energy Company Obligation) scheme. The homeowner at 58 Linden Avenue, Birmingham B43 5JU paid £0 for the upgrade. The property was assessed on 08/11/2025 (pre) and 02/03/2026 (post) by surveyor Kamaljit Ghaillon of Simple Green Energy Ltd.
CO₂ Impact
Upgrading to the Ideal Logic Combi2 with Radbot 1 controls cut this home's annual carbon footprint by over half.
Assessment Scores
RdSAP10 assessment carried out by Simple Green Energy Ltd — registered assessor Kamaljit Ghaillon.
ECO4 — Fully Funded Upgrade
This project was delivered under the Energy Company Obligation (ECO4) scheme, which funds heating and insulation improvements for eligible households across England. 58 Linden Avenue, Birmingham B43 5JU qualified based on its EPC Band E rating and owner-occupied status under a grant scheme transaction.
The property is a 2-storey semi-detached house (73 m²) built between 1950–1975, located in the Midlands region. Assessment was completed under RdSAP10 methodology by Kamaljit Ghaillon (Simple Green Energy Ltd, Tel: 01992 800666). Pre-survey reference: 004735 (08/11/2025). Post-survey reference: 005281 (02/03/2026).
The full package — boiler replacement, Radbot 1 controls installation, and cylinder removal — was delivered at zero cost to the homeowner.
Could Your Home Qualify?
If your property is EPC Band D or below, you could be eligible for a fully funded boiler upgrade — just like 58 Linden Avenue. Simple Green Energy handles everything from survey to installation.
No obligation · Fully funded for eligible homes · Results like Band E → C possible
