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A Plus Houston offers only the very best equipment.  We search for the best value in our HVAC market and pass the savings on to you.  Call today for your no-hype, no-bull, no-charge estimate.


We use only state-of-the-art technology to design and build the Amana Prestige ULTRA High-Efficiency Air Conditioner. That's how we achieve the superb Seasonal Energy Efficiency Ratio (SEER) of 14+. It's a leap in money-saving energy efficiency over systems manufactured just a few year ago. Savings add up very quickly - especially in hot weather, when your energy use can increase dramatically. And when matched with Amana high-efficiency coils or blowers, some systems can achieve up to 16 SEER for even greater savings.

The WeatherMaker Two-Speed central air conditioner is designed to deliver the most comfort for the least amount of energy. The two-speed design of this high-performance air conditioner delivers enhanced comfort and better humidity control. Operating at low speed up to 80% of the time, the WeatherMaker Two-Speed maintains even, consistent indoor temperatures. The longer operating cycles increase the circulation of cool, conditioned air while improving humidity control.

With Carrier's WeatherMaker Two-Speed you can enjoy superior energy savings as well as the ultimate in cooling comfort. As the temperature heats up, you need an air conditioner that will keep you cool without burning a hole in your pocket. That's why the WeatherMaker Two-Speed delivers up to 17.1 SEER (Season Energy Efficiency Ratio) and has earned the EPA's Energy Star seal for high efficiency. With a two-speed compressor that operates at a low speed for normal cooling requirements and high speed for more demanding conditions, the WeatherMaker Two-Speed air conditioner automatically adjusts to deliver maximum comfort and energy savings. The automatic control board monitors the system operation to ensure your overall comfort. All you have to do is set the thermostat to your desired temperature and relax in the money-saving comfort of the WeatherMaker Two-Speed central air conditioner.

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Photo of XL 1800
See Inside
Download the Heat Pump Owner's Manual Download Acrobat Reader

Carefree Comfort All Year Long

Imagine 12 months of comfort - from the hottest days to the coldest nights, total and complete, carefree comfort. That's what an XL 1800 system from Trane gives you every day of the year, because it's designed to cool your home in the summer and heat it during the winter.
XL 1800 Benefitsline graphic
Industry's Most Efficient (October 1998 ARI Directory)Up to 18 SEER

  • Up to 18.0 SEER on TTZ Air Conditioner
  • Up to 17.65 SEER and 8.50 HSPF on TWZ Weathertron® Heat Pump

Lasts a Long Time

  • Dual Climatuff® Compressors
  • Full-Side Louvered Panels
  • Weatherguard™ Top
  • Baked-On Powder Paint
  • Weather Resistant Screws
  • Two-Row Spine Fin™ Coil

Operates Quietly

  • Two-Stage Cooling
  • Three-Stage Heating on Heat Pump
  • Two-Speed Fan
  • Low-Resistance Airflow
  • Sound Insulator on Compressors
  • Comfort-R™ Enhanced Comfort Setting for Cooling on Air Conditioners and for Cooling and Heating for Heat Pumps

Enhanced Airflow

Humidity Control

When matched with a variable speed indoor unit from Trane, the XL 1800 has another special feature. It's a method of enhancing airflow that we call Comfort-R™ and it gives you greater humidity control in cooling. This is accomplished by running the fan at a slower speed during start-up. Comfort-R™ also provides warmer air during heating start-up in the XL 1800 Weathertron® Heat Pump. These managed cycles reduce temperature variances for the optimum in home comfort.

Backed by Trane10 Year Warranty

  • 10-Year Limited Warranty on Compressors and Coil
  • 2-Year Limited Warranty on All Other Parts
  • Optional Extended Warranties Available

Please read the Home Comfort Institute's article "How To Speak Air Conditioning", "XL1800 Ultra Efficiency Air Conditioner", and "XL1800 Ultra Efficiency Heat Pump" consumer brochures for more information.

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T8400 Programmable Thermostat



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Last modified: October 03, 2004