Can anyone please advise on the current ventilation requirements on a gas cooker replacement in an internal kitchen. This must be becoming a common issue.
1980s house, gas cooker in kitchen. Cooker needs to be replaced. Conservatory has since been built across the rear of house so now the kitchen is internal. Kitchen has a window but this now opens into conservatory. Kitchen also has a door which also opens into conservatory. Kitchen volume is 21m3. There is a cooker hood above gas cooker which extracts to outside at more than 30 L/sec. House has been passing annual gas safety checks.
The lack of a window to the outside air means that Hotpoint (supplier of the replacement gas cooker) wont install it.
Is there a way forward? The regs seem very confused. GasSafe tech bulletin 005(a) seems withdrawn and many now refer to Building Control part F (which I am already very familiar with) but they point to the normal habitable room ventilation reqs, not those for combustion.
For purge ventilation via conservatory there is an openable door (area 1.49m2) which is greater than 1/20 of the combined floor area of kitchen 9m2 + conservatory 9m2 = 18m2 total. So that seems satisfied.
For mechanical extraction, we have the cooker hood to outside rated at much faster than 30L/s. But I think this is not considered for combustion.
There is currently no background trickle ventilation from kitchen into adjacent room, ie. either the conservatory or living room (on the other side). I see mention of 80m2 (8000mm2) at height min 1.7m above floor. This could be added.
What can I do to get my new gas cooker?? Thanks in advance for your comments.
1980s house, gas cooker in kitchen. Cooker needs to be replaced. Conservatory has since been built across the rear of house so now the kitchen is internal. Kitchen has a window but this now opens into conservatory. Kitchen also has a door which also opens into conservatory. Kitchen volume is 21m3. There is a cooker hood above gas cooker which extracts to outside at more than 30 L/sec. House has been passing annual gas safety checks.
The lack of a window to the outside air means that Hotpoint (supplier of the replacement gas cooker) wont install it.
Is there a way forward? The regs seem very confused. GasSafe tech bulletin 005(a) seems withdrawn and many now refer to Building Control part F (which I am already very familiar with) but they point to the normal habitable room ventilation reqs, not those for combustion.
For purge ventilation via conservatory there is an openable door (area 1.49m2) which is greater than 1/20 of the combined floor area of kitchen 9m2 + conservatory 9m2 = 18m2 total. So that seems satisfied.
For mechanical extraction, we have the cooker hood to outside rated at much faster than 30L/s. But I think this is not considered for combustion.
There is currently no background trickle ventilation from kitchen into adjacent room, ie. either the conservatory or living room (on the other side). I see mention of 80m2 (8000mm2) at height min 1.7m above floor. This could be added.
What can I do to get my new gas cooker?? Thanks in advance for your comments.
