Badly fitted and poorly serviced gas appliances can cause gas leaks, fires, explosions and carbon monoxide poisoning. Every year thousands of people across the UK are diagnosed with carbon monoxide poisoning. It is a highly poisonous gas that can kill quickly with no warning, as you cannot see it, taste it or smell it. By ensuring you only hire Gas Safe registered engineers, you take care of your gas appliances properly and in turn, you’re taking care of your home and your loved ones.