Mini Split Installation in Denver, CO
A new system here will heat from October through May and cool from June through August every year. Tell us about the house, and a licensed contractor who covers Denver County will get in touch.
Tell us about the job
It takes about a minute.
Denver asks a mini-split to work most of the year
Heat is needed here from October through May, eight months a year, and winter nights average 19°F. A mini-split installed here has to hold its output on the coldest nights, not just the mild ones in between. Summer only asks three months of cooling, with afternoons averaging 87°F, so the unit spends most of its life heating, not cooling.
Any mini-split installed new has to meet the federal minimum for split-system heat pumps, 14.3 SEER2 for cooling and 7.5 HSPF2 for heating. That rule applies whether it is replacing an old unit or going into a room that never had one.
- 8 months
- October through May, your system heats
- 3 months
- June through August, it cools
- 19°F
- the average winter night it heats against
- 87°F
- the average summer afternoon it cools against
NOAA nClimDiv, 1991–2020 normals
- Is a mini split worth it?
- For most Denver homes, yes, especially if you're adding cooling to a room that doesn't have it or heating a space your furnace doesn't reach well. Summer afternoons here average 87°F, warm enough that a room without ductwork or a window unit struggles, and a mini split solves that without tearing into walls. Winter nights average 19°F from December through February, so any system installed here needs to be rated for that kind of cold. Whether it makes sense for your house depends on which rooms you're trying to fix and what's heating and cooling them now.
- How many rooms can a mini split cover?
- A single outdoor unit can run one indoor head or several, depending on the system. A single-zone system covers one room or open area. A multi-zone system connects several indoor heads to one outdoor condenser, each with its own thermostat, so different rooms can be heated or cooled to different temperatures at once. How many zones make sense for your house comes down to the layout and where you need the coverage, which a contractor works out room by room.
- Can a mini split heat a whole house?
- It can, if enough zones are installed to reach every room. Denver needs heat from October through May, eight months a year, with winter nights averaging 19°F from December through February, so any system covering the whole house has to be sized to handle that cold in every room it serves. Whether one system should cover your whole house or work alongside another heat source depends on your home's layout, which a contractor would need to look at directly.