Mini Split Installation in Casper, WY
A new system here will heat from September through June and cool from July through August every year. Tell us about the house, and a licensed contractor who covers Natrona County will get in touch.
Tell us about the job
It takes about a minute.
Ten months of heat, two months of cooling, and nights near 14 degrees
A mini-split here works almost all year. Heat is needed September through June, and on the coldest nights, which average 14°F, the heat pump has to pull warmth out of air that has little left to give. Come July and August, afternoons near 81°F ask it to work the other direction, though cooling only carries the load for those two months.
Any new mini-split has to meet the federal minimum for a split-system heat pump. That means 14.3 SEER2 for cooling and 7.5 HSPF2 for heating. Since this system carries the heat load most of the year rather than backing up a furnace, how well it was sized and set up matters more than that minimum, especially for the nights it gets coldest.
- 10 months
- September through June, your system heats
- 2 months
- July through August, it cools
- 14°F
- the average winter night it heats against
- 81°F
- the average summer afternoon it cools against
NOAA nClimDiv, 1991–2020 normals
- Is a mini split worth it?
- For most homes here, yes, but it depends on what you're heating with now and how the house is laid out. A mini split gives you heat and cooling from one system, room by room, without ductwork. Casper winters average 14°F overnight from December through February, so check that the unit is rated for cold climate performance, not just a standard heat pump. If your house already has gas heat and just needs help cooling a room or two in July and August, a mini split can cover that without touching the furnace.
- 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 tie one outdoor unit to several indoor heads, each with its own thermostat. How many rooms one system can reasonably cover comes down to the size of the outdoor unit and the heating and cooling load of each room, which is something a contractor works out for the specific house.
- Can a mini split heat a whole house?
- It can, if it's sized and placed for that. Cold climate mini splits are built to keep working well below freezing, which matters here since winter nights average 14°F from December through February. Whether one covers your whole house depends on the layout, how many zones you'd need, and how the rooms are arranged, since a head in an open living room won't necessarily heat a closed bedroom down the hall. A contractor can look at the house and tell you whether a mini split alone will do it or whether it makes more sense alongside your existing heat.