Just to complete the information: The tank is in the basement. The
furnace is serviced yearly (in September) and the filter and nozzle are
replaced. I have a time meter on the furnace and I know that it uses .9
gallons per hour so I have a good sense of oil usage. The conditioner
is cheap insurance.

---MIKE---

In the White Mountains of New Hampshire
(44� 15' N - Elevation 1580')