California's push to install 6 million heat pumps by 2030 faces major obstacles. The state has completed about 2.3 million, requiring 2,000 daily installations over five years to meet its goal.

Mary-Ann Rau, former Apple engineer and Merino Energy CEO, identifies installation costs and complexity as the core problem. Conventional mini-split systems cost $4,000 to $6,000 per zone and require full-day installations with electrical upgrades.
Merino's solution: the Merino Mono, a single wall-mounted unit priced at $3,800 with one-hour installation. It plugs into standard 120-volt outlets, eliminating expensive electrical work.
The Mono consolidates indoor and outdoor components into one wall unit, trading some efficiency for accessibility. It targets apartments and urban buildings where traditional outdoor units prove impractical.
California's bottleneck stems from labor costs, installation complexity, and skilled worker shortages. Permit timelines stretch four to six weeks, while qualified electrician shortages threaten electrification goals directly.