Energy Performance Certificate
21 Maes Merddyn, LL60 6DG
Energy rating
Current: 54 E | Potential: 80 C
Environmental impact (CO₂)
Current: 79
| Potential: 88
| Field | Value |
|---|---|
| LMK KEY | 2114-2277-9172-9171-1369 |
| ADDRESS1 | 21 Maes Merddyn |
| ADDRESS2 | — |
| ADDRESS3 | — |
| POSTCODE | LL60 6DG |
| BUILDING REFERENCE NUMBER | — |
| CURRENT ENERGY RATING | E |
| POTENTIAL ENERGY RATING | C |
| CURRENT ENERGY EFFICIENCY | 54 |
| POTENTIAL ENERGY EFFICIENCY | 80 |
| PROPERTY TYPE | House |
| BUILT FORM | Mid-Terrace |
| INSPECTION DATE | 2025-11-04 |
| LOCAL AUTHORITY | W06000001 |
| CONSTITUENCY | W07000112 |
| COUNTY | — |
| LODGEMENT DATE | 2026-04-20 |
| TRANSACTION TYPE | None of the above |
| ENVIRONMENT IMPACT CURRENT | 79 |
| ENVIRONMENT IMPACT POTENTIAL | 88 |
| ENERGY CONSUMPTION CURRENT | 249 |
| ENERGY CONSUMPTION POTENTIAL | 147 |
| CO2 EMISSIONS CURRENT | 1.9 |
| CO2 EMISS CURR PER FLOOR AREA | 22 |
| CO2 EMISSIONS POTENTIAL | 1 |
| LIGHTING COST CURRENT | 67 |
| LIGHTING COST POTENTIAL | 67 |
| HEATING COST CURRENT | 1462 |
| HEATING COST POTENTIAL | 1064 |
| HOT WATER COST CURRENT | 894 |
| HOT WATER COST POTENTIAL | 467 |
| TOTAL FLOOR AREA | 86 |
| ENERGY TARIFF | dual |
| MAINS GAS FLAG | N |
| FLOOR LEVEL | — |
| FLAT TOP STOREY | N |
| FLAT STOREY COUNT | 2 |
| MAIN HEATING CONTROLS | Manual charge control |
| MULTI GLAZE PROPORTION | 100 |
| GLAZED TYPE | — |
| GLAZED AREA | — |
| EXTENSION COUNT | 3 |
| NUMBER HABITABLE ROOMS | 5 |
| NUMBER HEATED ROOMS | 5 |
| LOW ENERGY LIGHTING | 96 |
| NUMBER OPEN FIREPLACES | 0 |
| HOTWATER DESCRIPTION | Electric immersion, off-peak |
| HOT WATER ENERGY EFF | Average |
| HOT WATER ENV EFF | Very Good |
| FLOOR DESCRIPTION | Solid, no insulation (assumed) |
| FLOOR ENERGY EFF | N/A |
| FLOOR ENV EFF | N/A |
| WINDOWS DESCRIPTION | Fully double glazed |
| WINDOWS ENERGY EFF | Poor |
| WINDOWS ENV EFF | Poor |
| WALLS DESCRIPTION | Cavity wall, filled cavity |
| WALLS ENERGY EFF | Good |
| WALLS ENV EFF | Good |
| SECONDHEAT DESCRIPTION | Room heaters, dual fuel (mineral and wood) |
| SHEATING ENERGY EFF | N/A |
| SHEATING ENV EFF | N/A |
| ROOF DESCRIPTION | Pitched, 150 mm loft insulation |
| ROOF ENERGY EFF | Good |
| ROOF ENV EFF | Good |
| MAINHEAT DESCRIPTION | Electric storage heaters |
| MAINHEAT ENERGY EFF | Average |
| MAINHEAT ENV EFF | Very Good |
| MAINHEATCONT DESCRIPTION | Manual charge control |
| MAINHEATC ENERGY EFF | Poor |
| MAINHEATC ENV EFF | Poor |
| LIGHTING DESCRIPTION | Good lighting efficiency |
| LIGHTING ENERGY EFF | Good |
| LIGHTING ENV EFF | Good |
| MAIN FUEL | electricity (not community) |
| WIND TURBINE COUNT | 0 |
| HEAT LOSS CORRIDOR | — |
| UNHEATED CORRIDOR LENGTH | — |
| FLOOR HEIGHT | 2.36 |
| PHOTO SUPPLY | 0 |
| SOLAR WATER HEATING FLAG | N |
| MECHANICAL VENTILATION | natural |
| ADDRESS | 21 Maes Merddyn |
| LOCAL AUTHORITY LABEL | Isle of Anglesey |
| CONSTITUENCY LABEL | Ynys Môn |
| POSTTOWN | GAERWEN |
| CONSTRUCTION AGE BAND | England and Wales: 1950-1966 |
| LODGEMENT DATETIME | 2026-04-20 12:50:09 |
| TENURE | owner-occupied |
| FIXED LIGHTING OUTLETS COUNT | 24 |
| LOW ENERGY FIXED LIGHT COUNT | 23 |
| UPRN | 100100007343 |
| UPRN SOURCE | Energy Assessor |
| REPORT TYPE | 2 |
| Source file | certificates-2026.csv |
| COUNTRY | Wales |
| REGION | W99999999 |
| Address display | — |
| Nation | ew |