What does mini-split installation cost in Imperial Beach with the salt air factored in?
A two to three zone coastal-rated mini-split heat pump for a 900 to 1,400 square foot cottage typically runs $9,000 to $16,000, a few hundred to a thousand dollars more than the same system inland because of the corrosion-protected coil upgrade. It's still cheaper than trying to retrofit central ducting into a home this size, which usually isn't practical anyway.