Mini-split for 1925 Craftsman addition — Tacoma

Case study · Install

Mini-split for 1925 Craftsman addition — Tacoma.

1925 Tacoma craftsman, never had ductwork, never had cooling. The owners had lived through the 2021 heat dome with box fans and wet towels. We installed a three-zone Mitsubishi Hyper-Heat that handles both cooling in August and supplemental heat in January — the radiators stay as the primary heat source.

Before / after

What changed in the conditioned space.

Indoor temperature reading at the thermostat probe, taken at the same room location before the install crew arrived and at the post-commissioning walk-through.

Before

84°F

After

72°F

Equipment used

Exact model numbers. Nothing generic.

Every piece of equipment that landed on this job, with the spec line. We publish the model numbers so you can shop them against another bid and confirm you're comparing apples to apples.

MitsubishiMXZ-3C30NAHZ2 Hyper-Heat Multi-Zone30,000 BTU outdoor, cold-climate rated, 3-port
MitsubishiMSZ-FS12NA Wall Cassette (×2)12,000 BTU, deluxe series, dual-vane airflow
MitsubishiMSZ-FH09NA Wall Cassette (×1)9,000 BTU, hyper-heat capable, plasma quad-plus filtration
Mitsubishikumo cloud ControlWi-Fi adapter, app-based zone scheduling

Install timeline

Day-by-day, hour-by-hour on this job.

We publish the timeline so the homeowner can plan their week, the inspector knows when to show up, and any future homeowner reading this knows what to expect on a similar project.

  1. Day 1 — Morning

    Outdoor unit set on rear-yard pad. Three line-sets run through ½" copper, sleeved through the original 1925 sheathing — minimal cosmetic impact.

  2. Day 1 — Afternoon

    Two wall cassettes mounted upstairs (master + nursery), one downstairs (living/dining). Condensate routing to existing drain stack.

  3. Day 2 — Morning

    Brazing, nitrogen pressure test (500 psi for 1 hour), triple evacuation to 250 microns, refrigerant weigh-in.

  4. Day 2 — Afternoon

    Power-on, full system commissioning, kumo cloud app set up. Homeowner walk-through. City of Tacoma inspector scheduled for Day 4.

Warranty on this job

What the homeowner walked away with.

12 years parts (extended-warranty registration completed at install). 6 years labor under Mitsubishi Diamond Contractor program. 2 years on the line-set penetrations.

From the neighborhood

Real calls. Real receipts.

Five-star average across 400+ Google reviews. We’re happy to email full reviews—or just call the neighbor whose house has our yard sign and ask.

★★★★★
Furnace died at 6am with two toddlers in the house. Mike was on the curb in 22 minutes, had the ignitor in his truck, and we had heat by 7:30. Charged exactly what he quoted.
★★★★★
Got three bids on a heat pump. NorthPeak was the only crew who measured our ductwork before quoting and who told us the Energy Trust rebate would cover $1,800 of it. They were right.
★★★★★
AC stopped cooling during the August heat dome. Same-day call, capacitor swap, $284 flat. The tech wore booties in the house and actually answered my question about MERV ratings.

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