Boiler & Heating
Controls Upgrade
Central Road, IP16 — rated EPC Band F with annual bills of ~£2,270 and no zone controls. Simple Green Energy replaced the ageing Glow-worm boiler with an Ideal Logic Combi2, fitted Radbot 1 zone controls and removed the uninsulated cylinder, lifting the home to Band D and saving £960 every year.
EPC Rating: Band F → Band D
The upgrade moved this property 25 SAP points forward — from one of the worst-performing bands to a solid mid-range rating.
The Boiler Replacement
The Glow-worm Ultimate 50FF 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. Actual savings vary by occupancy and tariff.
-
Ideal Logic Combi2New · post-upgrade89%
-
Modern Condensing AvgIndustry benchmark87%
-
Glow-worm 50FFOld · 20–28 yrs old76.9%
Three Targeted Measures
Simple Green Energy addressed every inefficiency in the heating system through three coordinated interventions under the ECO4 scheme.
Boiler Replacement
The Glow-worm Ultimate 50FF (76.9% efficiency, 20–28 years old) was replaced with an Ideal Logic Combi2 at 89% seasonal efficiency — the primary driver of the EPC improvement and bill reduction.
Ideal Logic Combi2 · 89%Radbot 1 Zone Controls
Secure Meters Ltd Radbot 1 installed throughout for Time & Temperature Zone Control, replacing a complete absence of scheduling or thermostatic zoning with room-by-room temperature management.
Radbot 1 · Room-by-roomCylinder Removal
The uninsulated hot water cylinder — no thermostat, constant standing losses — was decommissioned. The Ideal Logic Combi2 now delivers instant hot water on demand, removing background energy drain entirely.
Cylinder removed · Instant HWHow the measures work together: The Ideal Logic Combi2 generates heat efficiently. The Radbot 1 ensures heat goes only where and when needed. Removing the cylinder eliminates standing losses entirely. Together they reduce energy waste at every stage — generation, delivery and distribution.
Carbon Savings & Feedback
The job was carried out to a high standard, completed efficiently, and left clean and tidy throughout. The installation team worked quickly while maintaining professionalism and care within the property. We are very happy with the installation.
Delivered with East Suffolk Council
East Suffolk Council has supported the delivery of energy efficiency improvements across the district, helping residents access government-backed retrofit programmes through ECO4 and GBIS. At Central Road, the Council's involvement enabled this household to receive a fully funded heating system overhaul — moving from EPC Band F to Band D with £960 in annual savings.
By working alongside approved partners such as Simple Green Energy, the Council ensures all works meet required compliance standards with a clear focus on quality assurance, measurable outcomes and long-term carbon reduction targets.
Could your home benefit
from an ECO4 upgrade?
If your property has a low EPC rating, an old boiler or rising energy bills, you may qualify for a fully funded upgrade. Simple Green Energy will assess your home and identify the most effective measures.
No obligation · Government-backed · Takes just a few minutes
