Fremont has added thousands of accessory dwelling units and garage conversions in recent years, and most of them are too far from the main furnace to tie into existing ducts. A mini-split mounts on the wall or ceiling, connects to a compact outdoor unit through a three-inch hole, and gives that space its own thermostat.
Where mini-splits make the most sense
- ADUs and backyard cottages
- Converted garages and bonus rooms
- Upstairs bedrooms that run five degrees warmer than the rest of the house
- Older bungalows without ductwork
- Home offices that need cooling while the rest of the house stays off
Single-zone or multi-zone
A single-zone system pairs one indoor head with one outdoor unit. A multi-zone system runs two to five indoor heads from one outdoor unit, which saves space along the side yard but costs more and ties every room to one compressor. We lay out both options on paper with the price of each.
Because a mini-split is a heat pump, it also replaces space heaters and wall furnaces. If you are thinking about the whole house, compare it with a ducted heat pump system.
Clean installs that look finished
We route line sets through the attic or inside a painted line-hide cover, place the outdoor unit on a wall bracket or pad away from bedroom windows, and set up the remote or Wi-Fi control before we leave. Pair it with a smart thermostat adapter if you want one app for the whole home.
Typical costs in Fremont
| Job | Typical range |
|---|---|
| Single-zone mini-split (one room) | $4,500–$8,500 |
| Two-zone system | $8,000–$13,000 |
| Three to five zones | $12,000–$22,000 |
| Mini-split cleaning and service | $200–$400 per head |
Ranges reflect recent Fremont-area jobs and change with equipment, access and parts. You get an exact, written price before any work starts.
Looking for more than one fix? ComfortFlow is a full-service HVAC company in Fremont, so one call covers heating, cooling and hot water.