Mini Split Installation in Delta, CO
A new system here will heat from September through May and cool from July through August every year. Tell us about the house, and a licensed contractor who covers Delta County will get in touch.
Tell us about the job
It takes about a minute.
What a mini-split in Delta has to handle
Winter nights here average 17°F, December through February, and homes need heat nine months of the year, September through May. That is the long stretch that matters most. A mini-split installed here has to hold its heating output as the temperature drops toward that average low, night after night, for most of the year.
Summer asks less of it. Cooling season runs just two months, July and August, with afternoons averaging 82°F. Any new mini-split still has to meet the federal minimum for split-system heat pumps, 14.3 SEER2 for cooling and 7.5 HSPF2 for heating. In Delta, it is the heating side that does the real work.
- 9 months
- September through May, your system heats
- 2 months
- July through August, it cools
- 17°F
- the average winter night it heats against
- 82°F
- the average summer afternoon it cools against

NOAA nClimDiv, 1991–2020 normals
- Is a mini split worth it?
- For most homes here, yes. Winter nights average 17°F and homes need heat from September through May, so a mini split rated for cold climates can carry that load and cool the two months of summer besides. The main thing is picking a unit sized and rated for low outdoor temperatures, since not every model holds its heating output down near 17°F.
- How many rooms can a mini split cover?
- A single outdoor unit can run one indoor head or several, depending on the system. Each indoor head heats and cools the room it's mounted in, so the number of rooms you can cover depends on how many heads the outdoor unit is matched to, not on the square footage alone. A contractor will size the system to the rooms you want covered.
- Can a mini split heat a whole house?
- It can, if it's designed for that from the start. A multi-zone mini split with a head in each room, or a ducted mini split tied into a small duct run, can carry a whole house through winters here where nights average 17°F, but it takes the right equipment and enough heads or ductwork to reach every room. A single indoor head will heat the room it's in and whatever space is open to it, not the rest of the house.

