What is a ductless mini-split, and how is it different from a regular heat pump?
A ductless mini-split is a heat pump that distributes conditioned air directly into rooms through wall-mounted (or ceiling-cassette) indoor units called "heads," rather than through ductwork. One outdoor condenser can serve one zone or several, depending on the model. The same heat pump principle applies: heating in winter, cooling in summer, on a single electric platform. The difference is the absence of ducts, which makes it the right answer for homes that don't have ducts and for zones the central system can't reach well.
When should I choose ductless instead of a ducted heat pump?
Ductless is the right answer when: the home doesn't have existing ductwork (common in older Portland-area homes), the existing ductwork is leaky or undersized and remediation would cost more than ductless heads, you have a specific zone (ADU, addition, converted attic, sunroom, primary bedroom) that the central system doesn't condition well, or you want individual room control. Ducted is the right answer when whole-home conditioning through existing competent ductwork is the priority. The assessment tells you which path is right for your home.
How many heads can be on one outdoor unit?
Most residential multi-zone systems run 2 to 5 indoor heads on a single outdoor condenser. The right number is driven by Manual J per zone, not by how many rooms you want to condition. We do not oversize the outdoor unit to feed extra heads; we size each head to its zone and the outdoor unit to the combined load.
Are ductless mini-splits energy-efficient in Portland's climate?
Yes. Cold-climate ductless mini-splits maintain meaningful capacity down into the 20s Fahrenheit, which covers most of Portland's winter. Inverter-driven variable-speed compressors match output to demand minute by minute, which is significantly more efficient than the cycling on/off pattern of older fixed-speed equipment. PNW electric rates also favor heat pump technology in general; ductless inherits that advantage.
What ductless rebates apply in Oregon?
Energy Trust of Oregon typically offers approximately $1,500 on qualifying ductless heat pump installs for Oregon homeowners. Income-qualified households can stack to $3,000 in ETO rebates plus up to $2,000 from the state's Heat Pump Purchase Program. Federal IRA tax credits stack on top. Tru72 Portland is an active ETO Trade Ally and files the rebate paperwork at install so the discount appears on the invoice.
Do ductless heads look bad on the wall?
Modern ductless heads are slim, white, and unobtrusive, but they are visible. Ceiling-cassette and concealed-duct options exist for homeowners who want the head out of sight; they cost more and require ceiling access. The assessment includes a walkthrough of head placement options so you see exactly where each one would mount before you sign.
How long does a ductless installation take?
A single-zone install (one outdoor unit, one indoor head) is typically a one-day job (6 to 8 hours, two-person crew). Multi-zone installs depend on head count and line-set routing complexity: 2 zones run a long day or split across 1.5 days, 3 to 5 zones run 2 days. Electrical sub-panel work adds time and is scoped at quote.
Can a ductless system be added to a home that already has central HVAC?
Yes, and it's a common Portland configuration. The central system handles the main floor; a ductless head conditions the addition, the converted attic, or the primary bedroom that the central system never quite reached. Tru72 evaluates the two systems together so they cooperate rather than fight each other on the shared spaces.
Will Tru72 service a mini-split that another contractor installed?
Yes. Most HVAC companies refuse to service a ductless system they didn't install. Tru72 services any mini-split, any brand, regardless of who installed it. Annual cleaning, refrigerant check, head replacement, control board diagnosis, leak detection, recharge, or zone addition. The same diagnostic-first method applies whether we installed the system or not.