Gas safety Boiler Repair Service A gas boiler consumes carbon-based fuel and consequently emits toxic carbon monoxide.. Carbon Monoxide Alarm These alarms are simple to install and also very efficient in emergencies. These alarms should be installed.. Gas Safety Certificate (Commercial Properties) As long as you are the lender your renters’ safety is your responsibility. Because the Gas Safety.. Gas Safety Certification (Residential Properties) All housing landlords who lease to tenants have a mandate to ensure the protection of..