Depending on the size of the equipment(BTUs? Square footage?) I would do this:

1) Take several dice in hand(4, 5  or 6, most likely);

2) Roll them;

3) Depending on the number of dice, you will get a value between $1,111 to $6,666 for four dice; $11,111 to $66,666 for five dice, and $111,111 to $666,666 for six dice;

4) Depreciate.