Quote:

True, but overall the argument doesn't seem that logical since

a) you want your heating to do the heating and not your light bulbs
b) you don’t want additional heat from light bulbs in summer
c) the amount they produce is not that great, although it depends on the type of lamp
d) gas is cheaper than electricity

CWatters wrote on Dec 30^th, 2008, 10:33pm:

Always be sure to get a complete equivalent e.g. 9W to replace 40W candle and so on, not 7W which is equivalent to say 35W. And generally it is sensible to go up one. I installed 18x 18W 4-Pin CFL Sticks on a job recently, I thought they would have been just right, and they are OK, but the next up (26W) would have been better.

scotspark wrote on Jan 1^st, 2009, 7:46pm:

Are they Kosnic?. Cool white tends to appear brighter, and often is, but sometimes isn’t. It's useful if the lamps specify the lumens as you have something to compare against. I think the colour rendition is better on the cooler colours too, although I may be wrong.

I use my lux meter mainly for testing EM lighting, but have found it useful for checking lighting in commercial apps such as warehousing, and light level at desk height etc.

They are so cheap these days it is a good thing to have.