Single zone or multi-zone, wall mount or ceiling cassette—get the full installed cost including outdoor unit, indoor heads, lineset, electrical, and labor before you write the proposal.
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A quad-zone system shares one outdoor unit. Equipment cost is 2–2.5× a single-zone, not 4×. But labor is close to 4× because you're routing 4 linesets, hanging 4 heads, and commissioning 4 zones. Don't discount multi-zone installs on labor—the outdoor unit is the only thing you save time on.
Every mini-split needs a dedicated circuit—typically 20A/240V for most residential heads. If the panel is across the house, that circuit can cost $400–$800 in materials and labor alone. Scope the electrical run before quoting. Customers who got a $1,200 "mini-split quote" from someone who forgot the circuit call you wanting to know why your price is $2,000 higher.
Exposed lineset with white line-hide cover ($1.50–$2/lf) looks clean and is priced into most installs. Concealed-in-wall routing adds 2–4 hours of drywall work per zone and may require permits depending on jurisdiction. Be explicit in your proposal: "lineset will be surface-mounted with line-hide cover" vs "concealed in wall" to avoid the post-install conversation.
The HVAC Business Starter Kit includes a mini-split sizing cheat sheet, service agreement template, and flat-rate price book for 35 common jobs. Guide from $19 — Complete Kit with all 19 templates, $49.
Get the HVAC Kit →Mini-split installation pricing varies significantly based on the number of indoor heads, line set length and routing difficulty, electrical requirements, and whether a multi-zone or single-zone system is being installed. This calculator builds the complete installation quote from equipment markup, labor by zone count, and electrical work — so you can price mini-split jobs accurately as they become an increasingly common request.