An HVAC installer can earn an average of $42,000 a year, with four or more years of experience, while those new to the field make an average of $26,000 the first three years. Working in the motor vehicle manufacturing industry can offer the highest salary, with the average employee earning $68,000 a year.he HVAC salary will typically depend on an individualâs skill level, years of experience and place of employment. The tech will working by installing, repairing and maintaining air conditioning, ventilation and heating units for commercial or residential buildings.
CFL bulbs, on the other hand, are made of glass tubes filled with gas and a small amount of mercury. The amount is so small that an old-fashioned glass thermometer holds 100 times as much mercury as one CFL bulb.he mercury in a CFL bulb also means that you should not toss burned-out bulbs in the trash. Many municipalities offer recycling services, as do retailers such as Home Depot, Wal-Mart and IKEA, although not necessarily at all locations.
Compact fluorescent light bulbs, also known as CFLs, are an energy-efficient alternative to conventional incandescent bulbs .In an incandescent bulb, electric current heats a thin filament to the point that it glows.This design produces a warm, soft light, but the bulb loses most of its energy in the form of heat.piral Bulb â A basic CFL design with visible fluorescent tubes arranged in a spiral. Spiral bulbs, also known as twister bulbs, do an excellent job providing even light distribution and are ideal for lamps and light fixtures that hide the bulb behind a shade or covering.