synergy. An increase in the value of assets as a result of their combination. Expected synergy is the justification behind most business mergers. For example, General Motors purchased Electronic Data Systems in 1984 with the expectation that considerable synergy would result.
Filters can last from a few weeks to several years. In part, it depends on the materials they were made from, and their designed life span. As a general rule, most cartridge filters average 1 year. We recommend that you chemically clean your spa filters every 30 days to extend filter life. Not just spray them off with a hose, or rinse them off in the sink. A good Filter Cleaner & Degreaser will help remove oils and scum from the filter media.
-- Carl, Boston, Massachusetts. Carl, it depends on your definition of very long.. But generally speaking, a LCD projector lamp should last between 2,000 and 3,000 hours of viewing. That holds true for a Home Theater lamp or a lamp for a DLP TV. Of course, that number can vary. Like any kind of bulb, it might go dead in fewer hours than that, or it could last even longer. But if you buy a brand-name bulb that's compatible with your projector, you should get at least 2,000 hours of viewing. Now, how long is that in real-time? To use myself as an example, I've had a Sony VW60 Home Theater Projector, which has a Sony VW60 bulb, for about four years and I watch it quite a bit. I've used my projector for more than 1,700 hours and I have not had to replace the bulb yet.