Mini Split Installation in Decatur, AL
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 Morgan County will get in touch.
Tell us about the job
It takes about a minute.
What a mini-split in Decatur has to handle
Morgan County asks a mini-split to work most of the year. Winter nights average 33°F from December through February, and summer afternoons run near 89°F from May through September. That is seven months of heating and five months of cooling, which leaves the unit idle only a handful of weeks each year.
Most homes here heat with electricity, so the heat pump side of a mini-split is doing real work on cold nights, not just backing up a furnace. Any 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. Morgan County also sees its share of winter storms and damaging wind, and with close to a fifth of Alabama households losing power for a day or more in 2024, it's worth asking how the system you choose handles a restart once power comes back.
- 7 months
- October through April, your system heats
- 5 months
- May through September, it cools
- 33°F
- the average winter night it heats against
- 89°F
- the average summer afternoon it cools against
NOAA nClimDiv, 1991–2020 normals
Alabama requires HVAC contractors to hold a state license.
The license comes from the Alabama Board of Heating, Air Conditioning & Refrigeration Contractors, and it covers the contractor rather than the specific job. The state has tested this contractor and keeps a record of them, but passing a mini-split installation through inspection is a separate matter from holding the license itself.
The part that checks the actual work is the permit. In most cities and counties in Alabama, installing a mini-split needs a permit from the local building office, and the work gets inspected once it is done. That inspection is what confirms the line set is sized right and the unit is mounted and wired the way it should be, separate from whatever the state license already says about the contractor doing the work.
Source: Alabama Board of Heating, Air Conditioning and Refrigeration Contractors
- Is a mini split worth it?
- For the right home, yes. A mini split gives you heat and cooling from one system, and since it's a heat pump, it handles both your October through April heating and your May through September cooling. Homes here run one or the other nearly all year, so a system that does both without ductwork is worth looking at, especially for a room addition, a garage, or a house that relies on electric heat already. A contractor can look at your specific rooms and tell you whether it makes sense over what you have now.
- How many rooms can a mini split cover?
- A single outdoor unit can run one indoor head or several, depending on the system. Single-zone systems cover one room or open area. Multi-zone systems connect several indoor heads to one outdoor unit, each with its own thermostat, so you can heat or cool different rooms to different temperatures at the same time. How many rooms make sense on one system depends on the size and layout of each room, which is something a contractor works out by measuring the space.
- Can a mini split heat a whole house?
- It can, if enough zones are installed to reach every room. A multi-zone mini split system with heads placed through the house works the same way a central heat pump does, just without ducts. Winter nights here average 33°F, so the system installed has to be sized to keep up with that low, not just the mild days on either side of it. A contractor can size the system room by room to cover the whole house rather than leaving cold spots.