A ductless mini-split is one of the most efficient ways to add heating and cooling to a space that doesn't have ductwork — or to replace an aging window unit with something quieter, more efficient, and better-looking. Honey Bear Plumbing installs ductless mini-split systems throughout the Knoxville area, handling the full job from equipment selection through startup and cleanup.
Call (865) 284-2424 to schedule an installation estimate. We serve Knox, Blount, Anderson, and Loudon counties.
What Is a Ductless Mini-Split?
A mini-split system has two main components: an outdoor compressor unit and one or more indoor air handlers mounted on the wall or ceiling. Refrigerant lines run between them through a small hole in the wall — no ductwork required. Each indoor unit has its own thermostat, so you can control the temperature in each zone independently.
Most modern mini-splits are heat pumps, meaning they provide both heating and cooling from a single system. In Knoxville's climate, a quality mini-split can handle heating comfortably down into the low 20s°F — more than adequate for most East Tennessee winters.
When a Mini-Split Makes Sense
- Additions and bonus rooms — extending ductwork to a new addition is expensive and often impractical. A mini-split is usually the cleaner, cheaper solution.
- Garages and workshops — a dedicated mini-split keeps a garage workspace comfortable year-round without heating or cooling the rest of the house.
- Sunrooms and screened porches — spaces that get too hot in summer and too cold in winter benefit from independent climate control.
- Older homes without ductwork — homes heated with radiators or space heaters can add central-style comfort without a full duct system retrofit.
- Rooms that never feel right — master bedrooms, finished attics, or basement spaces that are always too hot or cold compared to the rest of the house.
- Replacing window AC units — mini-splits are quieter, more efficient, and don't block the window. They also heat, which window units can't.
Single-Zone vs. Multi-Zone Systems
Single-Zone
One outdoor unit connected to one indoor air handler. Best for a single room or space — garage, bonus room, addition. Most cost-effective when you only need to condition one area.
Multi-Zone
One outdoor unit connected to two to five indoor air handlers, each in a different room or zone. Each zone has independent temperature control. Ideal for conditioning multiple rooms without ductwork, or for a whole-home ductless setup in an older property.
What Installation Involves
A typical single-zone installation takes 4–8 hours depending on the complexity of the run. We handle:
- Mounting the indoor air handler on the wall at the right height and location
- Running refrigerant lines, condensate drain, and electrical wiring through the wall
- Setting the outdoor compressor on a pad or wall bracket
- Vacuuming and pressure-testing the refrigerant lines before startup
- Commissioning the system and walking you through operation and the remote or app controls
We clean up fully before we leave. The lineset cover and wall penetration are finished neatly — this isn't a window unit hanging out of a hole.
Efficiency & Cost
Modern mini-splits are highly efficient — most carry SEER ratings of 18–25+, significantly better than standard central AC systems (typically 14–16 SEER). For spaces currently heated with electric resistance (baseboard heaters, space heaters) the efficiency improvement can be dramatic — a heat pump delivers 2–3x more heat energy per unit of electricity than resistance heating.
Installed cost for a single-zone system typically runs $2,500–$4,500 depending on the unit and installation complexity. Multi-zone systems run higher. We provide written estimates before any work begins.
Service Area
We install ductless mini-split systems throughout Greater Knoxville including Farragut, Hardin Valley, Maryville, Alcoa, Oak Ridge, Powell, Halls, Seymour, Lenoir City, and surrounding Knox, Blount, Anderson, and Loudon counties.
Schedule a Mini-Split Installation Estimate
Call (865) 284-2424 to schedule an estimate. We'll assess your space, recommend the right system size and configuration, and give you a written quote before any work begins.
Frequently Asked Questions
A single-zone system typically runs $2,500–$4,500 installed, depending on the unit capacity and installation complexity. Multi-zone systems run higher. Honey Bear Plumbing provides written estimates before any work begins — call (865) 284-2424.
Yes. Most modern mini-splits are cold-climate heat pumps that operate efficiently down to 5°F–15°F outdoor temperature. For Knoxville winters, a quality mini-split handles heating comfortably through even the coldest stretches.
A single-zone installation typically takes 4–8 hours. Multi-zone systems with multiple indoor units take longer depending on the number of zones and complexity of the refrigerant line runs.
Sizing depends on the square footage, insulation, ceiling height, and sun exposure of the space. A 9,000–12,000 BTU unit handles a typical 300–500 sq ft space. We size the system correctly during our pre-installation assessment — an undersized or oversized unit won't perform well.
In some cases, yes — particularly for smaller homes or older homes without existing ductwork. A multi-zone mini-split system with several indoor units can condition an entire home zone by zone. We can assess your home and discuss whether a full ductless system makes sense.
Yes — the indoor air handler filters should be cleaned every 4–6 weeks during heavy use. Annual professional maintenance (checking refrigerant, cleaning coils, inspecting electrical connections) keeps the system running efficiently and extends its life.