Boiler Manufacturers That Begin with the Letter “I”

See below for a list of central heating boiler manufacturers and the respective model names/numbers. Each shows the respective SAP rating so you can determine the energy efficiency of the boiler model.

Boiler Manufacturer & Model » ICI Caldaie – Solar Micro 24F | SAP » 80.3 |

Boiler Manufacturer & Model » ICI Caldaie – Solar Micro 28F | SAP » 80.1 |

Boiler Manufacturer & Model » ICI Caldaie – Solar System 24F | SAP » 80.4 |

Boiler Manufacturer & Model » ICI Caldaie – Solar System 28F | SAP » 80.2 |

Boiler Manufacturer & Model » ICI Caldaie SPA – ICI Caldaie Solar C25 | SAP » 90.1 |

Boiler Manufacturer & Model » ICI Caldaie SPA – ICI Caldaie Solar C31 | SAP » 90 |

Boiler Manufacturer & Model » ICI Caldaie SPA – ICI Caldaie Solar System C25 | SAP » 90.1 |

Boiler Manufacturer & Model » ICI Caldaie SPA – ICI Caldaie Solar System C31 | SAP » 90 |

Boiler Manufacturer & Model » Ideal Boilers – British / Scottish Gas RD1 3100 | SAP » 78 |

Boiler Manufacturer & Model » Ideal Boilers – British / Scottish Gas RD1 330 | SAP » 79.4 |

Boiler Manufacturer & Model » Ideal Boilers – British / Scottish Gas RD1 340 | SAP » 78.6 |

Boiler Manufacturer & Model » Ideal Boilers – British / Scottish Gas RD1 350 | SAP » 79.6 |

Boiler Manufacturer & Model » Ideal Boilers – British / Scottish Gas RD1 360 | SAP » 78.3 |

Boiler Manufacturer & Model » Ideal Boilers – British / Scottish Gas RD1 370 | SAP » 78.5 |

Boiler Manufacturer & Model » Ideal Boilers – British / Scottish Gas RD1 380 | SAP » 78.1 |

Boiler Manufacturer & Model » Ideal Boilers – British / Scottish Gas RD109 | SAP » 79.4 |

Boiler Manufacturer & Model » Ideal Boilers – British / Scottish Gas RD109 Silver | SAP » 79.4 |

Boiler Manufacturer & Model » Ideal Boilers – British / Scottish Gas RD112 | SAP » 78.6 |

Boiler Manufacturer & Model » Ideal Boilers – British / Scottish Gas RD112 Silver | SAP » 78.6 |

Boiler Manufacturer & Model » Ideal Boilers – British / Scottish Gas RD115 | SAP » 79.6 |

Boiler Manufacturer & Model » Ideal Boilers – British / Scottish Gas RD115 Silver | SAP » 79.6 |

Boiler Manufacturer & Model » Ideal Boilers – British / Scottish Gas RD118 | SAP » 78.3 |

Boiler Manufacturer & Model » Ideal Boilers – British / Scottish Gas RD118 Silver | SAP » 78.3 |

Boiler Manufacturer & Model » Ideal Boilers – British / Scottish Gas RD121 | SAP » 78.5 |

Boiler Manufacturer & Model » Ideal Boilers – British / Scottish Gas RD121 Silver | SAP » 78.5 |

Boiler Manufacturer & Model » Ideal Boilers – British / Scottish Gas RD124 | SAP » 78.1 |

Boiler Manufacturer & Model » Ideal Boilers – British / Scottish Gas RD124 Silver | SAP » 78.1 |

Boiler Manufacturer & Model » Ideal Boilers – British / Scottish Gas RD130 | SAP » 78 |

Boiler Manufacturer & Model » Ideal Boilers – British / Scottish Gas RD130 Silver | SAP » 78 |

Boiler Manufacturer & Model » Ideal Boilers – British / Scottish Gas RD2 4100 | SAP » 78.9 |

Boiler Manufacturer & Model » Ideal Boilers – British / Scottish Gas RD2 4125 | SAP » 78.5 |

Boiler Manufacturer & Model » Ideal Boilers – British / Scottish Gas RD2 440 | SAP » 78.3 |

Boiler Manufacturer & Model » Ideal Boilers – British / Scottish Gas RD2 450 | SAP » 79 |

Boiler Manufacturer & Model » Ideal Boilers – British / Scottish Gas RD2 460 | SAP » 79.2 |

Boiler Manufacturer & Model » Ideal Boilers – British / Scottish Gas RD2 470 | SAP » 79.9 |

Boiler Manufacturer & Model » Ideal Boilers – British / Scottish Gas RD2 480 | SAP » 79.7 |

Boiler Manufacturer & Model » Ideal Boilers – Evo HE 12 HE 12 | SAP » 90.3 |

Boiler Manufacturer & Model » Ideal Boilers – Evo HE 16 HE16 | SAP » 90.4 |

Boiler Manufacturer & Model » Ideal Boilers – Evo HE 19 HE19 | SAP » 90.3 |

Boiler Manufacturer & Model » Ideal Boilers – Evo HE 22 HE22 | SAP » 90.2 |

Boiler Manufacturer & Model » Ideal Boilers – Evo HE C22/24 HE C 22/24 | SAP » 90.1 |

Boiler Manufacturer & Model » Ideal Boilers – Evo HE C22/30 HE C22/30 | SAP » 90.1 |

Boiler Manufacturer & Model » Ideal Boilers – Evo HE C22/35 HE C22/35 | SAP » 90.1 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Classic FF 3100 | SAP » 78 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Classic FF 330 | SAP » 79.4 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Classic FF 340 | SAP » 78.6 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Classic FF 340 LF | SAP » 79.1 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Classic FF 350 | SAP » 79.6 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Classic FF 350 LF | SAP » 78.4 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Classic FF 350 P | SAP » 81.8 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Classic FF 360 | SAP » 78.3 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Classic FF 360 LF | SAP » 79.1 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Classic FF 360 P | SAP » 80.2 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Classic FF 370 | SAP » 78.5 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Classic FF 380 | SAP » 78.1 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Classic FF 380 P | SAP » 79.9 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Classic HE 12 | SAP » 87.4 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Classic HE 15 | SAP » 86.4 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Classic HE 15 P | SAP » 89 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Classic HE 18 | SAP » 87.5 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Classic HE 18 P | SAP » 87.7 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Classic HE 9 | SAP » 87.1 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Classic RS 330 | SAP » 78.3 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Classic RS 340 | SAP » 78.9 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Classic RS 350 | SAP » 79.9 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Classic RS 360 | SAP » 79 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Classic SE12 FF | SAP » 78.6 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Classic SE12 FF Silver | SAP » 78.6 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Classic SE12 RS | SAP » 78.9 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Classic SE15 FF | SAP » 79.6 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Classic SE15 FF Silver | SAP » 79.6 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Classic SE15 RS | SAP » 79.9 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Classic SE18 FF | SAP » 78.3 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Classic SE18 FF Silver | SAP » 78.3 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Classic SE18 RS | SAP » 79 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Classic SE21 FF | SAP » 78.5 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Classic SE21 FF Silver | SAP » 78.5 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Classic SE24 FF | SAP » 78.1 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Classic SE24 FF Silver | SAP » 78.1 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Classic SE30 FF | SAP » 78 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Classic SE30 FF Silver | SAP » 78 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Classic SE9 FF | SAP » 79.4 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Classic SE9 FF Silver | SAP » 79.4 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Classic SE9 RS | SAP » 78.3 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Classic Slimline FF 330 | SAP » 79.9 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Classic Slimline FF 340 | SAP » 79.2 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Classic Slimline FF 350 | SAP » 79.9 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Classic Slimline FF 360 | SAP » 79.7 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Classic Slimline SE12 FF | SAP » 79.2 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Classic Slimline SE15 FF | SAP » 79.9 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Classic Slimline SE18 FF | SAP » 79.7 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Classic Slimline SE9 FF | SAP » 79.9 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Concord CXA 40/H | SAP » 79.9 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Concord CXA 50/H | SAP » 79.9 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Concord CXA 60/H | SAP » 79.8 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Concord CXS 40/H | SAP » 80.4 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Concord CXS 50/H | SAP » 80.1 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Concord CXS 60/H | SAP » 80.3 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Concord CXSD 40/H | SAP » 80.4 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Concord CXSD 50/H | SAP » 80.1 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Concord CXSD 60/H | SAP » 80.3 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Elise H15 | SAP » 90.4 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Elise H24 | SAP » 90.2 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Esprit HE 24 | SAP » 90.2 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Esprit HE 30 | SAP » 90.2 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Esprit HE 35 | SAP » 90.2 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal excel HE C24 | SAP » 86.4 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal excel HE C28 | SAP » 86.4 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal excel HE C32 | SAP » 86.3 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Icos HE 12 | SAP » 90.3 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal icos HE15 | SAP » 90.4 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal icos HE18 | SAP » 90.3 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal icos HE24 | SAP » 90.2 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Icos HE30 | SAP » 90.7 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Icos HE36 | SAP » 90.7 |

Boiler Manufacturer & Model » Ideal boilers – Ideal icos m3080 | SAP » 90.2 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal icos System HE 15 | SAP » 90.4 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal icos System HE 24 | SAP » 90.2 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal icos system m3080 | SAP » 90.2 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Imax W45 | SAP » 90.4 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Imax W45P | SAP » 91.3 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Imax W60 | SAP » 90.4 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Imax W60P | SAP » 92.1 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Isar HE 30 HE30 | SAP » 90.1 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal isar HE24 | SAP » 90.1 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal isar HE30 | SAP » 90.1 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal isar HE35 | SAP » 90.1 |

Boiler Manufacturer & Model » Ideal boilers – Ideal isar m30100 | SAP » 90.1 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal istor HE260 | SAP » 90.7 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal istor HE325 | SAP » 90.9 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Mexico HE 24 | SAP » 90.2 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Mexico HE 30 | SAP » 90.4 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Mexico HE 36 | SAP » 90.7 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Mexico HE15 | SAP » 90.4 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Mexico HE18 | SAP » 90.3 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Mexico Slimline CF 440 | SAP » 78.5 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Mexico Slimline RS 445 | SAP » 78.4 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Mexico Super 4100 FF | SAP » 78.9 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Mexico Super 4125 FF | SAP » 78.5 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Mexico Super 440 FF | SAP » 78.3 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Mexico Super 450 FF | SAP » 79 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Mexico Super 460 FF | SAP » 79.2 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Mexico Super 470 FF | SAP » 79.9 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Mexico Super 480 FF | SAP » 79.7 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Mexico Super CF 4120 | SAP » 79 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Mexico Super CF 4140 | SAP » 78.6 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Mexico Super CF 445 | SAP » 78.5 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Mexico Super CF 455 | SAP » 78.5 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Mexico Super CF 465 | SAP » 79.7 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Mexico Super CF 475 | SAP » 78.9 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Mexico Super CF 495 | SAP » 78.8 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Mexico Super RS 4100 | SAP » 79 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Mexico Super RS 4125 | SAP » 79.4 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Mexico Super RS 440 | SAP » 78.6 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Mexico Super RS 450 | SAP » 79.1 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Mexico Super RS 460 | SAP » 79 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Mexico Super RS 470 | SAP » 79 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Mexico Super RS 485 | SAP » 79.1 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Mini C32 32kW Combi Boiler | SAP » 78.3 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal mini HE C24 | SAP » 87.7 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal mini HE C24 LPG | SAP » 87 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal mini HE C28 | SAP » 87.6 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal mini HE C28 LPG | SAP » 87.1 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal Mini HE C32 | SAP » 86.8 |

Boiler Manufacturer & Model » Ideal Boilers – Ideal mini HE C32 | SAP » 88.8 |

Boiler Manufacturer & Model » Ideal Boilers – Optia FF100 | SAP » 78 |

Boiler Manufacturer & Model » Ideal Boilers – Optia FF30 | SAP » 79.4 |

Boiler Manufacturer & Model » Ideal Boilers – Optia FF40 | SAP » 78.6 |

Boiler Manufacturer & Model » Ideal Boilers – Optia FF50 | SAP » 79.6 |

Boiler Manufacturer & Model » Ideal Boilers – Optia FF60 | SAP » 78.3 |

Boiler Manufacturer & Model » Ideal Boilers – Optia FF70 | SAP » 78.5 |

Boiler Manufacturer & Model » Ideal Boilers – Optia FF80 | SAP » 78.1 |

Boiler Manufacturer & Model » Ideal Boilers – Optia HE 12 | SAP » 87.4 |

Boiler Manufacturer & Model » Ideal Boilers – Optia HE 15 | SAP » 86.4 |

Boiler Manufacturer & Model » Ideal Boilers – Optia HE 18 | SAP » 87.5 |

Boiler Manufacturer & Model » Ideal Boilers – Optia HE 9 | SAP » 87.1 |

Boiler Manufacturer & Model » Intergas Verwarming – Atmos InterCombi HE32 | SAP » 90.2 |

Boiler Manufacturer & Model » IRSAP – CWAI 24 M | SAP » 90.3 |

Boiler Manufacturer & Model » IRSAP – CWAI 32 M | SAP » 90.3 |

Boiler Manufacturer & Model » IRSAP – CWAS 24 M | SAP » 90.7 |

Boiler Manufacturer & Model » IRSAP – CWAS 32 M | SAP » 90.7 |

Boiler Manufacturer & Model » IRSAP – Ecogreen CWAI 24 M | SAP » 90.3 |

Boiler Manufacturer & Model » IRSAP – Ecogreen CWAI 32 M | SAP » 90.3 |

Boiler Manufacturer & Model » IRSAP – Ecogreen CWAS 24 M | SAP » 90.7 |

Boiler Manufacturer & Model » IRSAP – Ecogreen CWAS 32 M | SAP » 90.7 |

Boiler Manufacturer & Model » Itho Images bv – Ethos 28 | SAP » 90.3 |

Boiler Manufacturer & Model » Itho Images bv – Ethos 36 | SAP » 90.3 |

Boiler Manufacturer & Model » Itho Images bv – Ethos 46 | SAP » 90.3 |

The boiler list section is broken down alphabetically to show all boilers in the order of manufacturer. Click on one of the letters below to search.

A | B | C | D | E | F | G | H | I | J | K | L | M | N | O | P | Q | R | S | T | U | V | W | X | Y | Z

The list can be used to research the SAP rating of your current boiler and/or collate a list of boilers with the most favourable SAP number (the higher, the more energy efficient).