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| Specification options | |||
| Condensing, wall hung, gas boilers | Capital cost years Β£/boiler | Net present value for 60 Β£/boiler | Design life years |
| System boilers | Μύ | Μύ | Μύ |
| Condensing system boiler, maximum output 30 kW stainless steel heat exchanger, SEDBUK rating A | 1,500 | 11,479 | 15 |
| Condensing system boiler, maximum output 30 kW cast aluminium heat exchanger, SEDBUK rating A | 1,490 | 12,435 | 10 |
| Condensing system boiler, maximum output 30 kW cast aluminium heat exchanger, SEDBUK rating B | 1,480 | 13,185 | 10 |
| Combination boilers | Μύ | Μύ | Μύ |
| Condensing combination boiler, maximum output 30 kW stainless steel heat exchanger, SEDBUK rating A | 1,750 | 12,052 | 15 |
| Condensing combination boiler, maximum output 30 kW cast aluminium heat exchanger, SEDBUK rating A | 1,600 | 12,779 | 10 |
| Condensing combination boiler, maximum output 30 kW cast aluminium heat exchanger, SEDBUK rating B | 1,500 | 13,248 | 10 |
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