Project Summary
Project Type
Lennox Mini Split Installation
Location
Tiburon, California
Duration
2 day install completed by 2 HVAC installers and 1 electrician.
Services Provided
- Lennox MMPD Multiport Heat Pump Installation
- Install 2 Lennox MWZD Wall-Mounted Mini Split Air Handlers
The Challenge
A high-end Tiburon home already equipped with three gas furnaces needed enhanced climate control for the main living areas. The homeowners wanted efficient spot heating and cooling in their kitchen and living room without undertaking a full HVAC system replacement. The installation required discreet routing of linesets to maintain the home’s architectural aesthetics.
The Solution
We installed a dual-zone Lennox multiport mini split system to provide targeted climate control while complementing the existing HVAC infrastructure. This supplemental system delivers efficient heating and cooling precisely where needed, giving homeowners flexible control over their most-used living spaces.
Project Scope & Key Components
- Equipment Installed:
- 48K BTU (4-ton) Lennox MMPD Multiport Heat Pump (outdoor unit)
- Two 24K BTU (2-ton) Lennox MWZD Wall-Mounted Mini Split Air Handlers (indoor units)
- Installation Zones:
- Kitchen: 24K BTU wall-mounted air handler
- Living Room: 24K BTU wall-mounted air handler
Installation Process
Our comprehensive installation included:
- Outdoor Unit Setup
- Positioned 48K BTU multiport heat pump on prefabricated pad
- Connected to 240V dedicated electrical circuit per code requirements
- Ensured proper clearances and positioning for optimal performance
- Indoor Air Handler Installation
- Mounted two 24K BTU wall units in kitchen and living room locations
- Installed condensation drain lines routed to exterior and drained to ground level
- Provided wireless thermostat remote for each indoor unit for independent zone control
- Lineset Routing & Connections
- Carefully routed copper linesets to maintain home aesthetics
- Ran lines discreetly down the side of house, through crawl space, and down exterior wall beneath deck
- Concealed all connections to preserve architectural integrity
- System Commissioning
- Pressure tested all copper lineset connections
- Nitrogen purged system to remove all air and moisture
- Charged system with proper refrigerant levels
- Tested entire system for proper performance and efficiency
- Verified independent zone operation and thermostat functionality
The Results
The homeowners now enjoy precise, efficient climate control in their main living areas without relying solely on their whole-house gas furnace systems. The Lennox multiport system provides both heating and cooling on demand, reducing energy consumption by conditioning only occupied spaces. The discreet installation preserved the home’s high-end aesthetics while delivering whisper-quiet operation and independent zone control. This supplemental system enhances comfort and efficiency, demonstrating how modern mini split technology can seamlessly integrate with existing HVAC infrastructure.
Photo Highlights
Our team completed this two-day Lennox multiport mini split installation with meticulous attention to both performance and aesthetics in this high-end Tiburon home. We began by positioning the 48K BTU outdoor heat pump unit on a prefabricated pad and connecting it to dedicated 240V electrical service, then mounted two 24K BTU wall-mounted air handlers in the kitchen and living room with condensation drain lines routed discreetly to the exterior. The most critical aspect was routing the copper linesets inconspicuously down the side of the house, through the crawl space, and beneath the deck to maintain the home’s architectural integrity while ensuring optimal system performance. Our technicians pressure tested all connections, nitrogen purged the system to eliminate air and moisture, and properly charged the refrigerant to manufacturer specifications. The installation was completed with comprehensive performance testing of both zones and setup of wireless thermostat remotes, ensuring independent climate control for each living area.
System Benefits & performance Impact
This supplemental mini split system provides efficient, targeted heating and cooling in the main living areas without the need to replace the existing gas furnace infrastructure, offering flexible climate control exactly where it’s needed most. Homeowners benefit from significant energy savings by conditioning only occupied spaces rather than heating or cooling the entire house, with each zone operating independently for personalized comfort preferences. The whisper-quiet Lennox wall-mounted units deliver superior comfort without the noise disruption common in traditional forced-air systems, making them ideal for living spaces and open-concept areas. Our careful attention to discreet lineset routing preserved the home’s high-end aesthetics while the ductless design eliminated the cost and complexity of adding new ductwork to the existing structure. With wireless thermostat remotes for each zone and both heating and cooling capabilities, this modern solution enhances year-round comfort while reducing overall energy consumption and utility costs.
