Mini-Split Unit Installation and Maintenance
Efficient Climate Control for Homes and Businesses
Williams Mechanical offers professional installation and maintenance for split-unit HVAC systems across San Diego. Whether you're upgrading your home’s comfort, outfitting a new room addition, or seeking a flexible solution for a commercial space, split systems offer year-round temperature control with high energy efficiency and minimal disruption.
What Is a Mini-Split HVAC System?
A split unit, or ductless mini-split system, consists of two primary components:
- An outdoor condenser unit
- One or more indoor air handlers connected by refrigerant lines
These systems provide heating and cooling without the need for ductwork, making them ideal for older homes, room additions, garages, or spaces where duct installation isn’t practical.
Let’s Get to Work
Questions about our process or ready to schedule service? Send us a message or give us a call!
mini-Split Installation Services
Our certified technicians will assess your space, cooling and heating needs, and usage patterns to design a custom mini-split solution for your home or business. We handle the entire installation process, including:
- Proper unit sizing and zone planning
- Safe and code-compliant refrigerant line routing
- Secure mounting of indoor and outdoor components
- Electrical connections and thermostat integration
- Full system testing and optimization
We install all major brands and models and can tailor solutions for single-zone or multi-zone systems.
Mini-Split Maintenance Services
Routine maintenance keeps your split system performing efficiently and prevents breakdowns. Our maintenance services include:
- Cleaning or replacing indoor air filters
- Inspecting refrigerant lines and insulation
- Checking for leaks and proper refrigerant charge
- Cleaning condenser coils and outdoor units
- Ensuring proper thermostat calibration and response
- Verifying drainage and preventing mold or mildew buildup
We recommend professional service at least once per year, especially before peak heating or cooling seasons.
Why Choose a Split Unit System?
- Zoned comfort – Customize temperatures in different areas of your home
- High efficiency – Many systems offer SEER ratings over 20
- No ductwork needed – Ideal for retrofits and home additions
- Whisper-quiet operation – Minimal noise indoors and out
- Energy savings – Reduce energy waste by conditioning only the rooms you use
Solar-Powered Split Unit Systems
Eco-Friendly Comfort with Reduced Energy Costs
As energy prices rise and demand for sustainable solutions grows, solar-powered mini-split systems are becoming a smart choice for San Diego property owners. These systems combine the high efficiency of ductless split units with the clean energy of solar panels, creating an ultra-efficient, low-cost climate control solution.
Benefits of Solar Split Units:
- Off-grid capability – Ideal for remote areas or off-grid applications
- Lower utility bills – Use solar energy to power heating and cooling
- Environmentally friendly – Reduce your carbon footprint
- Eligible for rebates and tax credits – Take advantage of local and federal incentives
We work with solar-ready split systems and can connect you with trusted solar panel providers if you don’t yet have solar installed. If you already have solar panels, we’ll evaluate your system’s compatibility and capacity to support your new HVAC load.
