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HEM · Energy Performance Assessment
Home Energy Model Report
7 Riverside Walk, Salford · M15 4SD
Assessment Summary Dashboard
HEM headline metrics & fabric compliance overview
EPC Band
C
EPC Headline Metrics
Fabric Compliance
Elements compliant0
Above U-value target7
Total elements7
Primary heatingGas combi boiler
Fuel typeMains gas
⚠ Fossil fuel systems are capped at Band C under HEM:EPC
System Efficiency Comparison
Current vs Potential Performance
Side-by-side comparison after recommended upgrades
Current
D
SAP 63
+24
Potential
B
SAP 87
Fabric Performance
Building envelope energy efficiency (walls, roof, windows, floors)
D
68
B
88
+20
Heating System
Heating system efficiency and emissions. Fossil fuels capped at Band C.
C
72
B
90
+18
Smart Readiness
On-site generation, storage, and smart control capability
E
45
B
83
+38
Energy Cost
Annual energy running cost per m²
D
65
B
87
+22
Current annual cost
£0
Potential annual cost
£0
Save £0/yr
Recommended Upgrades (3)
Replace fossil boiler with air source heat pump
COP 3.0 vs current 90% efficiency
Heating band improvement + fossil fuel cap removed
Upgrade 7 fabric elements to target U-values
External walls (0.39 → 0.30), Party walls (0.26 → 0.20), Roof (0.21 → 0.16), Ground floor (0.23 → 0.18), Exposed floor (0.23 → 0.18), Windows (1.82 → 1.40), External doors (1.82 → 1.40)
Fabric performance band improvement
Add battery storage (10 kWh)
Enables self-consumption of PV generation
Smart readiness band improvement
Score Impact Breakdown
Where improvement investment will have the greatest effect on your EPC rating
Headline Metrics — Ranked by Improvement Potential
Top
Smart Readiness
Band E · 45/100
45
+55 to Band A
55 pts
Energy Cost
Band D · 65/100
65
+35 to Band A
35 pts
Fabric Performance
Band D · 68/100
68
+32 to Band A
32 pts
Heating System
Band C · 72/100
72
+28 to Band A
28 pts
Fabric Element Scores — Pinpoint Insulation Gaps
Roof
0.21 W/m²K
+47
External walls
0.39 W/m²K
+46
Party walls
0.26 W/m²K
+46
Windows
1.82 W/m²K
+46
External doors
1.82 W/m²K
+46
Ground floor
0.23 W/m²K
+45
Exposed floor
0.23 W/m²K
+45
Score = how close each element's U-value is to its Building Regulations target. Red = furthest from target, greatest improvement potential.
Energy System Contributions
Space heating systemGas combi boiler
Fossil fuel — capped at Band C
Solar PV generation3.5 kWp
Contributing to smart readiness24.5/35 pts
Battery storageNone installed
Pair with PV for maximum benefit0/30 pts
Smart controlssmart_thermostat
Upgrade to zoned smart controls for full marks15/25 pts
Highest Impact Opportunities
1
Smart Readiness — 55 points below Band A
On-site generation, storage, and smart control capability
2
Energy Cost — 35 points below Band A
Annual energy running cost per m²
3
Fabric Performance — 32 points below Band A
Building envelope energy efficiency (walls, roof, windows, floors)
4
Heating System — 28 points below Band A
Heating system efficiency and emissions. Fossil fuels capped at Band C.
EPC Headline Metrics
Four-band rating replacing the single A–G EPC under the HEM:EPC framework (coming 2027)
Fabric Performance
D
68/100
Building envelope energy efficiency (walls, roof, windows, floors)
Heating System
C
72/100
Heating system efficiency and emissions. Fossil fuels capped at Band C.
Smart Readiness
E
45/100
On-site generation, storage, and smart control capability
Energy Cost
D
65/100
Annual energy running cost per m²
HEM Score
71
EPC Band
C
CO₂ Emissions
1.9 t/yr
Annual Fuel Cost
—
Dwelling Fabric — Thermal Elements
U-values (W/m²K) per element. Lower U-value = better insulation.
| Element | U-value | Target | Area (m²) | Compliance |
|---|---|---|---|---|
| External walls | 0.39 | 0.30 | — | Above target |
| Party walls | 0.26 | 0.20 | — | Above target |
| Roof | 0.21 | 0.16 | — | Above target |
| Ground floor | 0.23 | 0.18 | — | Above target |
| Exposed floor | 0.23 | 0.18 | — | Above target |
| Windows | 1.82 | 1.40 | — | Above target |
| External doors | 1.82 | 1.40 | — | Above target |
Energy Systems
Heating, hot water, ventilation, generation, and controls
Space heating
Gas combi boiler
Fuel: Mains gasEfficiency: 90%
Hot water system
Hot water cylinder
Fuel: Mains gasEfficiency: 80%Volume: 150L
Ventilation
Natural (background vents)
Airtightness: 5 m³/h/m²
Cooling
None
Solar PV
Roof-mounted PV
Capacity: 3.5kWpOrientation: South
Battery storage
none
Efficiency: 95%
Smart controls
Smart thermostat