A/C Alternatives

Zoned Chilled Water Cooling or Mini Split Air Conditioning

The common misconception is that if you have hot water heating, you can’t have air conditioning. Abacus offers many alternatives that are very high efficiency. By having a small fan coil in each space that needs cooling, we can create diversity or load shifting with how and when different zones call.

There are quite a few advantages to using zoned fan coils:

  • Large duct trunk-line soffits are not necessary
  • No multi-level stratification from air handler in lower level
  • Only use cooling energy where desired in home
  • Still have air quality filtration at each zone
  • Potential for humidification distribution with radiant heating

The zoned fan coils and mini split units come in a number of different styles to suit your application. The Multiaqua fan coils are available in hi-wall exposed, universal mount, air handling units and ceiling concealed units. We use ceiling concealed units most commonly and will install them in small soffits, dropped ceiling spaces, in the attic and in inverted soffits in the attic. No matter the application or style, we customize the layout and design with the owner, architect and builder.

Please call for more information or visit
Mitsubishi Electric



  • FREE Lennox Healthy Climate Air Filtration System or 50% off Whole House Humidifier with purchase of new High Efficiency Furnace or Air Conditioning add-on
  • 25% off Tekmar TN4 Comfort Control System with upgrade of current boiler to High Efficiency Con-Mod BoilerThe combination of 1. Properly resizing the boiler to your home; 2. Upgrading boiler efficiency and; 3. Adding an intelligent Tekmar Control system has realized as much as 75% overall savings and optimum comfort for some customer! (not to mention proper system design)
  • 10% off Tekmar TN4 Comfort Control System to add to your existing boiler system for savings of up to 30% off your current fuel costs
  • Free Solar Site Analysis with HUGE Green Incentives available through December 2010 – Call Abacus to ensure your system is done right!
  • Free estimates and consultations/ education on your home or building’s mechanical systems