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A ductless mini-split system delivers heated, cooled, or ventilated air directly to the target room, without running through ventilation ducts. Ductless A/C and heat systems, just like ducted ones, have two main components: a compressor outdoors and one or more air handler units indoors. Indoor units can be placed almost anywhere in the room, as long as they can be reached by a thin conduit. They normally each have their own remote control, for easy access.
Why Choose Ductless Systems?
- Zoning capabilities
Room-by-room control is a top feature! - Quiet
While not exactly silent, ductless A/C systems are surprisingly quiet. - More efficient
Less heat and cooling are lost than in a ducted system. - Excellent retrofitting solutions
Add rooms as you wish! - Money-saver
Efficient and easy to manage, they make a difference to your budget. - Eco-friendly
Reduced carbon output and zero ozone depletion potential. - Flexibility in design options
At 7 inches deep and 15 high, you can put them almost anywhere.
Ductless Options are Suitable for:
- Smaller spaces
- Heating and cooling isolated areas
- New additions, garages, bonus rooms
- Homes that have no existing ductwork
- Supplementary cooling for areas such as additions, garages, bonus rooms
- Landlords needing to cool multiple units inside a building

Reliable HVAC & Plumbing Services Since 1983
Control Tech is a residential & commercial heating, air conditioning, geothermal, and plumbing contractor located in Zionsville, Indiana. Since 1983, Control Tech has been a leader in the HVAC & Plumbing industry, and proudly serving customers in Indianapolis and all surrounding communities.
When we say “Family Owned & Operated”, we mean it! With four members of the Winters family working at any given time, we will ensure that your comfort needs are met.
Why Work with Us?
We feature the most modern and comfort systems available today from industry leading manufacturers.
When we started Control Tech in 1983, it was our goal to provide each customer unsurpassed quality and the highest value in installation and service. Each performed timely and safely by knowledgeable professionals ensuring full customer satisfaction.
- Family Owned & Operated
- Licensed, Bonded & Insured
- 24 Hour Emergency Service
- We Do NOT Use Subcontractors

All Services:
- Air Conditioning
- Residential Plumbing
- Furnaces
- Air Handlers
- Ductless Systems
- Gas Boilers
- Heat Pumps
- Indoor Air Quality
- Water Heaters
- HVAC Maintenance
- Commercial HVAC
How We Can Help:
- Installation
We will help you decide on the best option for your needs and budget, and we will ensure your system is installed efficiently and accurately. - Repairs
Whether you require a minor fix, or you need an emergency repair, our experienced technicians know how to get it up and running. - Maintenance
We have a variety of maintenance plans that protect your investment, ensure your system is running efficiently and provide peace-of-mind. - Trustworthy, Qualified Service
Our technicians are experienced, respectful and friendly too. They keep on top of the latest products and service techniques, in order to provide the highest level of service.