DUCTLESS MINI-SPLIT INSTALL IN SALT LAKE CITY

Central AC assumes you have ductwork. A lot of Utah homes don't — or have ductwork that can't reach a finished basement, an added bedroom, a converted garage, or the upstairs bonus room that sits 12°F warmer than the rest of the house. Running new ducts through an existing home is expensive, disruptive, and in some homes (brick, plaster, tight attics) effectively impossible. A mini-split solves the problem by skipping the ducts entirely. An outdoor condenser connects to one or more indoor heads through a small refrigerant line set and drain line — no sheet metal, no new chases cut in walls.

We install mini-splits across the Wasatch Front for four main situations. Spot cooling — that one hot bedroom. Add-ons and ADUs — a detached casita or garage conversion without existing HVAC. Basements that the central system can't reach efficiently. And whole-home projects on older houses where the alternative is ripping out plaster to install ductwork. All four are strong mini-split use-cases; we don't sell them for situations where central AC would do a better job.

Single-zone, multi-zone, and ducted mini-splits

The right configuration depends on how many spaces you're cooling and what the aesthetic constraints are.

• Single-zone — one outdoor unit, one indoor head. Most common for a single room, garage, or detached ADU. Install runs $3,800–$6,500 typical
• Multi-zone — one outdoor unit, 2 to 5 indoor heads on separate thermostats. Best for a basement + bonus room combo, or a 2–3 bedroom addition. $7,500–$13,500 typical for 2–3 zones
• Ducted mini-split (concealed) — the indoor unit hides in a soffit or small closet, serving 2–3 rooms through short ducts. Looks like central AC, operates with mini-split efficiency. Great for whole-home retrofits of older houses. $9,500–$16,500 typical

Brands we install and service

Mitsubishi Electric (our default recommendation for Utah — best cold-climate performance, H2i models work down to -13°F), Daikin, LG, Fujitsu. Mitsubishi's Hyper-Heat models are the only mini-splits we install when the customer also wants reliable heating through a Utah winter — most standard mini-splits lose capacity hard below 20°F.

What Valley does differently

Proper mini-split installs live or die on three things: line-set brazing (must be done under nitrogen flow to keep copper clean), full vacuum to 500 microns before charging, and correct mounting height and airflow direction on the indoor head. We do all three, on every install. Cheap mini-split installers skip the nitrogen purge and the deep vacuum, and two years later the system is leaking refrigerant from oxidized braze joints. We've replaced a lot of those.

Every install pulls the municipal permit, registers the manufacturer warranty in your name (12-year parts on Mitsubishi when registered properly), and comes with our 2-year Valley labor warranty. QSC HVAC members get the warranty extended to the life of membership plus free annual mini-split service on every indoor head.

When a mini-split is NOT the right answer

If you already have working ductwork throughout the house and just need a new central AC, standard central is almost always cheaper, faster, and has better long-term parts availability. If you want heating down to -15°F, a gas furnace or a cold-climate heat pump matched with one beats a standard mini-split. And if you hate the look of indoor heads mounted on walls, a ducted mini-split costs more — worth knowing going in.