Best

WeatherMaker 38 TDB

• The WeatherMaker Two-Speed with Puron refrigerant can keep you cool all summer long while achieving up to 18.0 SEER (Seasonal Energy Efficiency Ratio) efficiency
• One of the keys is our two-speed compressor, which operates at low speed for normal cooling requirements and high speed for more demanding conditions
• With Puron refrigerant, this air conditioner should last well beyond the practical usefulness of most standard, Freon®-22* systems

Better

WeatherMaker 38 TXA

• 14.0 SEER
• With Puron refrigerant, this air conditioner should last well beyond the practical usefulness of most standard, Freon®-22* systems
• Silence System for quiet comfort

Good

WeatherMaker 38 TKB

• up to 11.5 SEER (Seasonal Energy Efficiency Ratio), the 38TKB central air conditioner offers considerable improvement over older, less efficient models. By replacing an older air conditioner which may have a rating of 8 SEER or lower with the 38TKB, you can decrease your electricity consumption by as much as 30 percent on indoor cooling