We have lived in the IE since 1988, and Yucaipa for five years now - But wow, these winter heating bills are a shock! Living in a senior mobile home park, we are thankful for the rent control ordinance, and the YMRA...But, Mobile homes are generally a lot less to heat and cool than big houses...But not this year! Our gas bill averages $60 to $80 in the winter, but this year, our February bill was $160! We could not believe our eyes! So here are the main reasons why, and lets hope this gets better soon...How high was your bill? A checker at Vons told me her gas bill on their large home in Yucaipa was $460!