我想请问一下关于出租房的问题：
1）房子里有 gas cooker + gas boiler, 这在做 gas safety certification 的时候，是算一个 gas appliance 还是2个？
2）他们负责测试 smoke alarms 吗？是否负责测试 carbon monoxide detector?
3）smoke alarms 和 carbon monoxide detector 可否自己测试（而不是依赖外面请的 engineers）？自己当着房客的面测试的，算吗？
谢谢各位的回复！
“1）房子里有 gas cooker + gas boiler, 这在做 gas safety certification 的时候，是算一个 gas appliance 还是2个？”
2个
“2）他们负责测试 smoke alarms 吗？是否负责测试 carbon monoxide detector?”
No
“3）smoke alarms 和 carbon monoxide detector 可否自己测试（而不是依赖外面请的 engineers）？自己当着房客的面测试的，算吗？”
没有听说过，这个需要什么证书，如果你可以和中介一起check应该比较好，或者让check in的人check
关于 Carbon monoxide alarms http://www.rla.org.uk/landlord/guides/carbon-monoxide-requirements.shtml
Additionally, landlords must ensure that there is a carbon monoxide alarm fitted in any room that is used partly or wholly as living accommodation which also contains any appliance which burns, or is capable of burning, solid fuel. This would include log and coal burning stoves and open fires, even if they are not normally in use, but does not include gas and oil boilers. If an open fireplace is purely decorative and not useable then it is not covered by the regulations.
Gas is not a solid and so there is no requirement to fit one near a gas boiler. It is still advisable as best practice however.
关于Checks http://www.rla.org.uk/landlord/guides/carbon-monoxide-requirements.shtml
The landlord is specifically required to carry out a check to ensure that smoke alarms or carbon monoxide alarms installed to comply with the Regulations are in proper working order on the day a tenancy begins where it is a new tenancy. A new tenancy is a tenancy granted on or after 1st October 2015.
For these purposes a new tenancy does not include a tenancy which was granted where the original agreement was entered into before 1st October 2015; nor does it include a periodic statutory tenancy which arises when a fixed term shorthold tenancy ends. It does not apply to a tenancy which starts at the end of an earlier tenancy where the landlord and tenant are the same as under the earlier tenancy and the premises are the same (or substantially the same) as those under the earlier tenancy. Therefore this express requirement to check does not apply to the renewal of a tenancy for the same premises by the same landlord to the same tenant. This should not be confused with the requirement to install detectors and alarms which applies to tenancies in existence before October 1st 2015.
万分感谢成龙大哥！！