The main guides are: Guide A: Environmental Design Guide B: Heating, Ventilating, Air Conditioning and Refrigeration Guide C: Reference Data Guide D: Transportation systems in Buildings Guide E: Fire Safety Engineering Guide F: Energy Efficiency in Buildings Guide G: Public Health Engineering Guide H: Building Control Systems Guide J: Weather, Solar and Illuminance Data Guide K: Electricity in Buildings Guide L: Sustainability Guide M: Maintenance Engineering and Management Within the construction sector, it is the job of the building services engineer to design and oversee the installation and maintenance of the essential services such as gas, electricity, water, heating and lighting, as well as many others. Local HVAC Installation Options When you need air conditioning repair or replacement, you can usually just replace your current unit with the same HVAC system. Top cities for heating and cooling system services See more