Gas installations are easy to use and very economic. They are very clean and easy to maintain, but they do require professional care when there is a need for a repair, or if you suspect that there is a gas leak somewhere. This and many other gas emergencies can be taken care of by a professional Gas Engineer London. A professional Gas Engineer London will maintain and repair all gas installations and appliances in your home and also answer different questions you might have about gas installations. We are all wondering if it is allowed to use a gas fireplace. In a case when you have an older home with an open fireplace that already has installed gas installations, this is already present, but in a case when you want to install it now, this will probably not be the best choice because there are no original burners for fireplaces these days (they are not manufactured any more). This causes practical problems when it comes to testing and verifying every individual burner. Even present burners are risky because they don’t have a gas flow safety switch. Besides, due to improper handling and maintenance, these fireplaces often tend to explode, which is a safety risk as well as a health risk due to all these mentioned reasons.How do kitchen and bathroom air vents affect gas appliances? If you wonder what to do about this, the answer is to avoid using kitchen and bathroom air vents when gas appliances (type B) are working because they need proper air flow for combustion and exhaust of gas fumes away from rooms. Air flow for combustion is satisfactory if the air pressure of the air that circulates doesn’t go over 0,04 mbar (4Pa) if it flows natural, or in a case of technical measures,the air volume for combustion per hour is 1,6 m3/h per each 1 kW of total heat power of gas appliance.