Review Your Winter Heating Bill: Usage, Rates and a Comparison Worksheet Blank editorial worksheet. Complete locally; omit account numbers and private details. Bill A / Bill B Period start and end: Billed days: Actual or estimated reading: Unit of measurement: Usage: Daily use = usage / billed days: Rate(s), tiers and fixed charges: Other charges or adjustments: Occupancy and weather differences: Equipment / mode / manufacturer instructions checked: One change and its date: Comfort or equipment concerns: What the comparison can and cannot show: