These terms refer to the colour temperature of the lamps.

Warm white is has less blue light and is a close match to traditional incandescent bulbs.

Daylight white bulbs deliver more of the full spectrum, which means they have more blue light and will also usually appear to be brighter. Many people describe daylight white as being colder, especially in a domestic or relaxing environment such as a café or pub.

Which colour temperature is right for you is a matter of personal preference although we find that most people prefer warm white bulbs in their homes. We offer warm white versions of all our low energy bulbs.

If you are not sure which to choose then we would recommend trying warm white first. You can always return or exchange within seven days.

Daylight white bulbs are ideal for the work-place, other working areas or where a bright light is required. People who suffer from Seasonal Affective Disorder (S.A.D.) may also prefer the fuller colour spectrum from daylight white bulbs, but please be aware that our bulbs are not designed for daylight therapy.

If you want to find out more about colour temperature then wikipedia is an excellent place to start. Don't forget to place your order first though!

Finally, at homewatt we use very precise colour temperature codes such as 2700k and 6400k in our product numbers and some product descriptions. We use these purely as shorthand for the rather more loose definitions: warm white and daylight white.