Mini Split Installation in Rock Springs, WY
A new system here will heat from September through June and cool from July through July every year. Tell us about the house, and a licensed contractor who covers Sweetwater County will get in touch.
Tell us about the job
It takes about a minute.
Rock Springs asks a mini-split to heat, not just cool
Winter nights here average 11°F from December through February. Homes need heat from September through June, ten months of the year, against just one month of real cooling. A mini-split installed here is doing winter work almost all year, so it has to hold its rated heat output down at 11°F, not just perform well on a mild fall evening.
A mini-split heat pump falls under the same federal rule as any split system. Units built on or after January 1, 2023 must meet 14.3 SEER2 for cooling and 7.5 HSPF2 for heating. Most homes here still heat with gas, so a mini-split rated for real cold is what makes it worth relying on through a Rock Springs winter.
- 10 months
- September through June, your system heats
- 1 months
- July through July, it cools
- 11°F
- the average winter night it heats against
- 80°F
- the average summer afternoon it cools against
NOAA nClimDiv, 1991–2020 normals
- Is a mini split worth it?
- It depends on what you need it to do. A mini split gives you heat and cooling from one system, and the outdoor unit keeps working at temperatures well below what a standard air-source heat pump can handle, which matters here with winter lows averaging 11°F. Most homes in Rock Springs heat with gas, so a mini split often works best as a way to cool a room that has no ductwork, or to add heat to a space the furnace does not reach well. A contractor can look at your house and tell you whether it replaces what you have or adds to it.
- How many rooms can a mini split cover?
- A single outdoor unit can run one indoor head or several, up to what the manufacturer rates it for. Each indoor head is sized and placed for one room or one open area, so covering more rooms means adding more heads to the same outdoor unit. How many a given system can support, and whether your electrical service can carry it, is something a contractor works out from the house itself.
- Can a mini split heat a whole house?
- It can, if enough indoor heads are installed and each room is sized correctly, but that is a bigger job than most people mean by a mini split. Rock Springs needs heat from September through June, so a system meant to cover the whole house here has to hold up through real cold, not just take the edge off. A contractor can tell you whether a full multi-head system makes sense for your house or whether it works better alongside the heat you already have.