Industrial tenant in Renton's Black River corridor — 12,000 sq ft warehouse with one office mezzanine. Rooftop unit was original to the 1998 build and finally failed in a July heat wave. Owner wanted minimum tenant disruption (48-hour weekend window) and best long-term operating cost.
Before / after
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
89°F
After
70°F
Equipment used
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.
Install timeline
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.
Crane scheduled, building permit pulled (Renton mechanical + structural for curb adapter), tenant notified for 48-hr shutdown window.
Existing 1998 12-ton RTU disconnected (gas, power, ductwork). 8-ton crane on-site by 7am. Old unit removed from roof in under an hour.
New curb adapter set (existing curb dimensions didn't match new unit). New 12-ton RTU lifted, set, sealed.
Gas line repiped to the new RTU connection. Electrical disconnect upgraded to 60A. Thermostat and economizer module wired in.
Commissioning run: refrigerant charge verified, gas pressure tested, two-stage operation verified, BACnet point-list configured. Renton inspector signed off Day 5.
Warranty on this job
10 years compressor, 5 years parts (Carrier registered). 1 year labor standard, extended to 2 years under our commercial-tier service agreement. Curb adapter and roof penetration: 5 year leak warranty.
From the neighborhood
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.
Jen K.
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.
Ramon V.
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.
Priya S.
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