Mini Split Installation in Murfreesboro, TN
A new system here will heat from October through April and cool from May through September every year. Tell us about the house, and a licensed contractor who covers Rutherford County will get in touch.
Tell us about the job
It takes about a minute.
What Murfreesboro asks of a mini-split
Your mini-split runs almost year round here. Heat from October through April, seven months, then cooling from May through September, five months. That covers all 12 months with one system or the other doing real work.
Winter nights average 31°F and summer afternoons average 88°F, so the heat pump side has to work in both directions, not just cool. A unit installed new has to meet the federal minimum for split-system heat pumps, 14.3 SEER2 for cooling and 7.5 HSPF2 for heating. Most homes here heat with electricity, and Rutherford County has logged 9 winter storms and 137 damaging wind events over the past ten years, the kind of weather that puts a strain on whatever system is keeping the house warm or cool that day.
- 7 months
- October through April, your system heats
- 5 months
- May through September, it cools
- 31°F
- the average winter night it heats against
- 88°F
- the average summer afternoon it cools against
NOAA nClimDiv, 1991–2020 normals
- Is a mini split worth it?
- For the right room or house, yes. A mini split heats and cools without ducts, so it works well for additions, garages, or homes that need heat one month and cooling the next. Homes here need heat from October through April and cooling from May through September, so a unit has work to do nearly all year. Whether it makes sense for your house depends on how it's laid out and what's already there, and a contractor can walk through that with you.
- How many rooms can a mini split cover?
- One outdoor unit can run more than one indoor head, so it depends on how many heads the system supports and how the rooms connect. A single-zone system covers one room or one open area well. A multi-zone system can send several indoor heads to different rooms off the same outdoor unit, but each room still needs its own head mounted in it. A contractor can look at your floor plan and tell you how many zones it would take to cover the space you want conditioned.
- Can a mini split heat a whole house?
- It can, if there are enough indoor heads placed to reach every room, and if each one is sized for the space it's heating. Winter nights here average 31°F from December through February, so the system has to be sized to keep up on the coldest nights, not just the mild ones. A house with an open layout might only need a couple of heads. One with many closed-off rooms will need a head in most of them, since a mini split doesn't move air through ducts to reach rooms without one. A contractor can size the system room by room for your house.