heat lamps dont last long?

[bsd13]

Put in a surge protector, maybe it's your house current that's uneven and is causing them to go out so quickly.

WWP is right. That's exactly what was happening to me. They would go out after about 3.5 to 5 weeks and after I had the electric company do some testing we found out it was an issue with the current inside the house due to wiring.