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HVAC Engineering in Seattle, WA

Seattle's construction market is driven by tech-campus expansion, port and maritime industry, and a wave of multifamily and mixed-use infill. The city sits in the Cascadia subduction zone and enforces one of the strictest energy codes in the country.

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49 states · 10+ PEs · Same-day quotes on qualifying scopes · Zero excuses

What we design

Heating, cooling, ventilation, and controls — one coordinated mechanical design for Seattle tech office campuses and tenant improvements. Engides delivers load calcs, equipment schedules, duct layouts, and ASHRAE 90.1 documentation that the Seattle Department of Construction and Inspections reviewers approve, backed by Apex Grid Engineering's licensed engineers.

  • Seattle, WA contractors call Engides when the schedule is tight: fast mechanical quotes, coordinated drawings, and a PE stamp the Seattle Department of Construction and Inspections accepts.
  • Controls sequences written for the Seattle operator, not just the submittal: economizer changeover, morning warm-up, and unoccupied setback logic that actually gets programmed.
  • Energy modeling and Title-24-style documentation for Seattle tech office campuses and tenant improvements: our compliance forms match the drawings, so the Seattle Department of Construction and Inspections energy review doesn't generate a second correction cycle.
  • Heating and cooling load calculations for Seattle tech office campuses and tenant improvements using a marine climate with wet winters design conditions — envelope, occupancy, and ventilation loads modeled so equipment is sized right, not oversized by habit.
  • Ventilation for Seattle life-science and research labs projects is designed for the actual occupancy — conference-heavy floors, kitchens, and locker rooms each get their own air-change logic, not one blanket rate.

Project types

  • Tech office campuses and tenant improvements
  • Mid-rise and high-rise multifamily
  • Life-science and research labs
  • Waterfront and maritime industrial
  • Hospital and healthcare expansions
  • Mass-timber mixed-use

Everything else your project needs

MEP Engineering in Seattle

Mechanical, electrical & plumbing design — permit-ready drawings, best price.

Structural Engineering in Seattle

Structural design, analysis & PE stamping — permit-ready drawings, best price.

Civil Engineering in Seattle

Site civil & land development — permit-ready drawings, best price.

Electrical Engineering in Seattle

Power distribution, panels & lighting design — permit-ready drawings, best price.

Plumbing Engineering in Seattle

Water, sewer, gas & fixture design — permit-ready drawings, best price.

PE Stamping in Seattle

Licensed PE stamps on your plans — fast turnaround, best price.

Structural Stamping in Seattle

Licensed PE stamps on structural plans & calculations — fast turnaround, best price.

MEP Stamping in Seattle

Licensed PE stamps on MEP plan sets — fast turnaround, best price.

Civil Stamping in Seattle

Licensed PE stamps on civil & site plans — fast turnaround, best price.

Fire Protection Engineering in Seattle

Fire sprinkler, alarm & suppression design — permit-ready drawings, best price.

Plan Check Corrections in Seattle

Plan check comments answered fast — resubmittal-ready corrections, best price.

Energy Modeling & Compliance in Seattle

Title 24, COMcheck & ASHRAE 90.1 compliance — pass plan check, best price.

Tenant Improvement Engineering in Seattle

TI engineering for office, retail & restaurant buildouts — permit-ready, best price.

Low Voltage Engineering in Seattle

Fire alarm, data, security & AV design — permit-ready drawings, best price.

Seismic Retrofit Engineering in Seattle

Earthquake retrofit design & PE-stamped plans — best price.

Solar Engineering in Seattle

PV structural analysis, NEC 690 electrical design & interconnection — permit-ready drawings, best price.

Fire Alarm Engineering in Seattle

NFPA 72 fire alarm design, voice evacuation & mass notification — permit-ready drawings, best price.

Security System Engineering in Seattle

Access control, video surveillance & intrusion detection design — permit-ready drawings, best price.

Building Automation Engineering in Seattle

BACnet controls, BMS design & smart building integration — permit-ready drawings, best price.

Elevator Engineering in Seattle

ASME A17.1 elevator design, modernization & code compliance — permit-ready drawings, best price.

Industrial Electrical Engineering in Seattle

NEC Article 430 industrial power design, arc flash & hazardous locations — permit-ready drawings, best price.

Plumbing Design Engineering in Seattle

IPC/UPC plumbing design, medical gas & backflow engineering — permit-ready drawings, best price.

HVAC Retrofit Engineering in Seattle

HVAC retrofits, electrification & decarbonization design — PE-stamped mechanical plans, best price.

Electrical Panel Upgrade Engineering in Seattle

Panel upgrades, load calculations & utility coordination — permit-ready drawings, best price.

Emergency Power Engineering in Seattle

Generators, NFPA 110 systems & life-safety power design — permit-ready drawings, best price.

Renewable Energy Engineering in Seattle

Wind, geothermal & hybrid renewable engineering — feasibility, PE-stamped design & interconnection, best price.

Energy Audit Engineering in Seattle

ASHRAE Level 1/2/3 energy audits, benchmarking & retro-commissioning — find the waste, prove the savings, best price.

EV Charging Engineering in Seattle

EV charging station design — NEC 625, load calculations & service upgrades, permit-ready drawings, best price.

Water Treatment Engineering in Seattle

Filtration, disinfection, reverse osmosis & backflow design — permit-ready water engineering, best price.

Battery Storage Engineering in Seattle

Battery storage design per NEC 706 & NFPA 855 — permit-ready drawings, best price.

Commissioning Engineering in Seattle

Building commissioning & functional testing — systems verified to work as designed, best price.

Data Center Engineering in Seattle

Mission-critical MEP for data centers — Tier III/IV electrical, cooling & fire protection, best price.

Generator Engineering in Seattle

Standby generator sizing, ATS & emergency power design — permit-ready drawings, best price.

Lighting Design Engineering in Seattle

Photometric lighting design, controls & code compliance — permit-ready drawings, best price.

Medical Facility Engineering in Seattle

Medical gas, exam-room HVAC & healthcare electrical design — permit-ready drawings, best price.

Commercial Kitchen Engineering in Seattle

Commercial kitchen hoods, grease exhaust, gas & interceptors — permit-ready drawings, best price.

Pool Engineering in Seattle

Pool structural, systems & permits — engineered for plan check approval.

ADU Design in Seattle

Accessory dwelling unit plans — from concept to permit.

Engineering Cost Guide in Seattle

Straight answers on what engineering really costs.

HVAC Engineering nearby

Auburn · Bellevue · Bellingham · Bothell · Bremerton · Burien · Burlington · Edmonds · Everett · Federal Way · Issaquah · Kenmore