Mini split systems — also called ductless mini splits — provide zoned heating and cooling without the need for ductwork, making them the most practical HVAC solution for room additions, ADUs, converted garages, and rooms that are difficult or expensive to connect to a central duct system. They are also an excellent upgrade for homes where central duct systems are inefficient or where room-by-room temperature control is a priority. At Wise Choice Remodeling (CSLB #1104186), we install single-zone and multi-zone mini split systems correctly, with proper electrical connections, refrigerant line sizing, and indoor unit placement for optimal performance.
Signs You Need When a Mini Split Is the Right Choice
Mini splits are the best HVAC solution in several specific situations:
- Room addition or ADU that cannot be easily connected to existing ductwork
- Garage conversion that needs heating and cooling as a living space
- Rooms that are consistently hotter or colder than the rest of the home
- Home without existing ductwork that would require major renovation to install
- Desire for room-by-room temperature control independently of central system
- Energy-efficient supplemental cooling for a specific room or home office
Mini splits are particularly popular for ADU projects and room additions in Southern California where connecting to existing ductwork is impractical or expensive.
Mini Split Installation Services We Provide
We install single-zone and multi-zone mini split systems for the full range of residential applications.
Single-Zone Mini Split Installation
A single-zone system pairs one outdoor unit with one indoor unit to condition a single room or space. The most common configuration for room additions, ADUs, and converted garages.
Multi-Zone Mini Split Installation
A multi-zone system pairs one outdoor unit with multiple indoor units, each independently controlled. Allows different temperatures in different rooms without separate outdoor units for each zone.
Concealed Duct Mini Split Installation
For applications where wall or ceiling-mounted indoor units are not desired aesthetically, concealed duct mini splits connect to short duct runs hidden in the ceiling. Provides the efficiency and zoning benefits of mini splits with a cleaner visual appearance.
Mini Split Replacement
Replacing an aging mini split system with a modern high-efficiency unit delivers improved performance and energy savings. We remove old equipment and install properly matched replacement systems.
Mini Split vs. Central HVAC — Choosing the Right System
Understanding the differences helps determine which system is right for your specific application.
| Factor | Mini Split | Central HVAC |
|---|---|---|
| Ductwork Required | No | Yes |
| Zoning | Room-by-room control | Whole home or zone dampers |
| Best For | Additions, ADUs, specific rooms | Whole home conditioning |
| Installation Complexity | Lower — no duct work | Higher — duct system required |
| Efficiency | Very high — no duct losses | Good — duct losses vary |
| Upfront Cost per Zone | Higher per zone | Lower for whole home |
Our Mini Split Installation Process
Site Assessment and System Selection
We assess the space to be conditioned, load requirements, and electrical capacity to select the right mini split system and determine optimal indoor unit placement.
System Selection and Estimate
We present unit options with a detailed written estimate before any work begins. No vague line items, no surprise charges.
Electrical Circuit Installation
Mini splits require a dedicated electrical circuit. We install the required circuit as part of the installation.
Indoor Unit Installation
We install indoor unit mounts at the selected location and run refrigerant lines and electrical connections through the wall to the outdoor unit location.
Outdoor Unit Installation
We install the outdoor unit on an appropriate pad or wall bracket and complete all refrigerant line connections.
System Commissioning
We charge the system with refrigerant, test heating and cooling operation, and confirm performance before we leave.
Get a Free Mini Split Installation Estimate
Ready to add efficient heating and cooling to your addition, ADU, or specific room? Contact Wise Choice Remodeling to schedule your free assessment and estimate. We will evaluate your space and give you a clear written quote.
How Long Does Mini Split Installation Take?
Most single-zone mini split installations are completed in one day. Multi-zone installations may take one to two days depending on the number of zones and complexity of the installation. We give you a clear timeline during the estimate phase.
Mini Split Installation Cost — What to Expect
Costs vary based on the number of zones, unit capacity, and whether electrical circuit work is required. Single-zone systems for additions and ADUs are the most straightforward and cost-effective configuration.
We provide detailed written estimates at no charge based on your specific space and installation requirements.
Why Choose Wise Choice for Mini Split Installation
Licensed and Insured
We carry full general liability and workers compensation coverage.
Correct Sizing and Placement
Indoor unit placement significantly affects comfort and efficiency. We select locations that provide optimal airflow distribution for the space.
Electrical Expertise
Mini splits require dedicated electrical circuits. We handle the full electrical work as part of the installation.
Workmanship Guarantee
We stand behind every installation. If something is not right after we leave, we come back and fix it.
No Unknown Subcontractors
Your installation is handled by our experienced, licensed crew from start to finish.
Mini Split Installation Services Across Southern California
Wise Choice Remodeling provides professional mini split installation services to homeowners across Southern California. We serve Los Angeles County, Riverside County, San Bernardino County, Orange County, San Diego County, and the Palm Desert area. Our licensed crew delivers the same level of care and quality on every job regardless of location.
Mini Split Installation
Questions Answered
Yes. Most mini split systems are heat pumps that provide both heating and cooling. They are very efficient for heating in Southern California's mild winter climate.
Yes. Refrigerant lines, electrical connections, and a condensate drain line are run through a small hole in the wall between the indoor and outdoor units. The penetration is sealed and finished cleanly.
Modern mini split systems achieve very high efficiency ratings — often 20 to 30 SEER — because they eliminate the duct losses associated with central systems. They are among the most efficient heating and cooling options available.
Yes. A properly sized mini split will significantly outperform a window AC unit in both cooling capacity and energy efficiency, while also providing heating capability and a much cleaner installation.
Yes. High-efficiency mini split systems often qualify for utility rebates and federal energy efficiency tax credits. We advise on applicable programs during your estimate.
Yes. Wise Choice Remodeling holds CSLB License #1104186 and carries full general liability and workers compensation coverage.