Ductless Mini-Splits in Nampa & the Treasure Valley
Cool and heat any room — no ductwork required. ACFLEX Mechanical Services designs and installs ductless mini-split systems for additions, garages, shops, hot upstairs rooms and whole homes.
Comfort Where You Need It
A ductless mini-split delivers efficient heating and cooling straight to the room — no ducts, no major construction and no wasted energy heating or cooling empty spaces. Each indoor unit has its own controls, so everyone can set the temperature they like.
With hot Treasure Valley summers and cold winters, a mini-split can handle both seasons in a single system.
How a Mini-Split Works
Outdoor Unit
A compact condenser outside your home moves heat in or out, depending on the season.
Small Line Set
Refrigerant and power lines run through a small opening in the wall — no ductwork needed.
Indoor Unit
A quiet indoor unit cools or heats the room directly, with its own remote or smart controls.
Where Mini-Splits Work Best
Why Homeowners Choose Ductless
Zoned Comfort
Set each room to its own temperature — no more fighting over the thermostat.
High Efficiency
No duct losses and inverter-driven compressors help keep energy bills down.
Heats & Cools
One system for summer cooling and winter heating.
Whisper Quiet
Indoor units run quietly enough for bedrooms and offices.
Minimal Disruption
No tearing open walls or ceilings to run ductwork.
Smart Controls
Use a remote, wall control or phone app, depending on the system.
Single-Zone vs. Multi-Zone
Mini-splits can serve one room or many. We'll help you choose the setup that fits your home.
One Outdoor, One Indoor
One outdoor unit connected to one indoor unit.
- Ideal for a single room or space
- Lower upfront cost
- Great for garages, shops and additions
One Outdoor, Several Indoor
One outdoor unit connected to multiple indoor units.
- Each room controlled separately
- Can heat and cool a whole home
- Fewer outdoor units on the property
Built for Idaho Winters Too
Modern cold-climate mini-splits keep heating efficiently even when temperatures drop well below freezing — a smart fit from Nampa to McCall and Cascade. We'll match the right equipment to your home and how cold it gets where you live.
- Cold-climate models available
- Efficient heating for most of the winter
- Works alongside an existing furnace
- Cools just as well in July
Our Mini-Split Installation Process
In-Home Estimate
We look at the space, talk through your goals and plan where each unit should go.
Design & Pricing
You get a system designed for your rooms, with upfront pricing and no pressure.
Clean Install
We mount the units, run the lines neatly and protect your home as we work.
Test & Walkthrough
We test every zone and show you how to use the controls before we leave.
Add year-round comfort now with affordable monthly payments. Ask about utility rebates that may apply, too.
Mini-Split Installation Across the Treasure Valley
Looking for whole-home cooling with ducts? See AC installation or heating installation.
Ductless Mini-Split FAQs
Can a mini-split heat my home in winter?
Yes. Mini-splits are heat pumps, so they heat as well as cool. Cold-climate models are designed to keep heating efficiently well below freezing. In colder areas, they can also work alongside an existing furnace for backup.
How many indoor units do I need?
It depends on your layout and which rooms you want to condition. A single open space may need one unit, while a whole home may use several. We'll plan the right number during your estimate.
How long does a mini-split installation take?
A single-zone system is often installed in about a day. Multi-zone systems take longer depending on the number of indoor units and where they go. We'll give you a clear timeline with your estimate.
Are mini-splits expensive to run?
Mini-splits are among the most efficient ways to heat and cool a space. Because they only condition the rooms you're using and don't lose energy through ducts, many homeowners see lower energy use than with older systems.
Do mini-splits need maintenance?
Yes. Clean the indoor unit filters regularly and schedule professional service once a year to clean the coils and check the system. Regular maintenance keeps them running efficiently and quietly.
Ready to Go Ductless?
Tell us about the space and the ACFLEX team will design a mini-split system that fits — with upfront pricing and no pressure.