McCarthy Heating Oil Service

P.O. Box 332, 50 Route 32
Quaker Hill, CT 06375
Tel: 860-443-2839

McCarthy Heating Oil Truck

Serving Southeastern Connecticut since 1961

Mr. Slim Split-Ductless Heating & Cooling Systems

Diamond Contractor and Mitsubishi Electric logos

McCarthy Heating Oil is a licensed Mitsubishi Diamond Contractor. We did this in order to better serve our customers' needs. We are trained in installation and maintenance of the slim-duct system.

Benefits of the split system are:

  • Ease of installation
  • This system does not require expensive ductwork
  • Compact design
  • Extremely quiet operation
  • Remote control
Fuel delivery drivers in class continually training for the safety and security of our customers

More information:

  • Known as the "Cadillac®" of ductless systems, the Mr. Slim line-up is a great alternative to add cooling and even supplemental heating to living areas in a home that cannot be reached by ductwork.
  • Great Room and Family Room additions, homes built on slabs, homes with vaulted ceilings throughout, finished basement areas, and Post and Beam style homes are all great candidates for a ductless system approach.
  • The outdoor condenser is very compact measuring the size of a large suitcase and has DC Inverter technology ramping up or down as temperatures get hotter or cooler.
  • The efficiencies of these systems are in the ultra-high category with 16 to 21 SEER ratings for cooling only, up to 26 SEER and HSPFs up to 10.6 for the heat pump variants.
  • All ductless systems used by Berry Mechanical Services use the new R410A refrigerant that contains no ozone depleting agents.
  • These systems are available in single zone, dual-zone, tri-zone, and quad-zone options to meet any home layout. There’s even an 8 zone option that’s popular in some commercial and residential applications!
  • A wireless digital programmable control controls the unit from anywhere within a room.  Options for hard wired controls are also available depending on application.
  • Installation of a single zone system usually takes only 1 day to complete followed by power wiring and start-up.
  • We are proud to be a Mitsubishi Diamond Contractor and offer all of the ductless systems available from Mitsubishi.
  • Please contact our Design Consultant to see how easy it will be to install a ductless cooling and heating system into your home today!

For more information, call 860 443 2839 or go to or

You can also download Mitsubishi Electric's Home Owner brochure (PDF).