Which Lennox series is more expensive?

Which Lennox series is more expensive is Signature Series is most expensive, followed by Elite Series mid-range, and Merit Series least expensive. Lennox AC and furnace lineup has three tiers: Merit Series is entry level value line including ML14XC1 AC 14 SEER single stage and ML296V furnace 96 percent AFUE two-stage, costing 4,000 to 6,000 dollars installed for 3-ton AC and 3,000 to 5,000 dollars for furnace, offering basic efficiency, single or two-stage operation, and 10-year parts warranty, good for budget and rental. Elite Series is mid-range premium including EL16XC1 AC 17 SEER two-stage, EL296V furnace 96 percent AFUE two-stage variable speed, costing 5,000 to 7,500 dollars for AC and 4,000 to 6,500 dollars for furnace, offering better efficiency, quieter operation at 70 decibels, and improved features. Signature Series is top premium most expensive including XC20 AC 20 SEER variable speed, XC25 AC 26 SEER most efficient, SLP99V furnace 99 percent AFUE most efficient, costing 7,000 to 11,000 dollars for AC and 5,500 to 9,000 dollars for furnace, offering highest efficiency, variable speed modulating, SilentComfort quiet at 59 decibels, and iComfort communicating technology. So Signature Series is most expensive, Elite middle, Merit cheapest. For most homeowners, Elite offers best balance of efficiency and cost.