One of the best way to deal with heating and AC cost is to limit heating an= d AC to areas that individuals inhabit. See if you can limit the amount of= cubic space that must be conditioned. Thin walls or blankets or foam shee= ts can limit conditioned areas. In my buildings and houses.... I condition= only the areas that I live or work in. The rest of the space I let vary w= idely temperature-wise. 99guspuppet --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .