Commercial Ventilation Design in Downey

Healthy, code‑compliant ventilation is the foundation of safe, productive workplaces. In Downey, our commercial ventilation design service aligns outdoor air delivery, pressure control, filtration, and energy recovery to the unique demands of your building and occupancy. Every design is engineered for performance, maintainability, and compliance—so your project moves from concept to permit to commissioning without surprises.

What We Design

• Outside air and exhaust systems per ASHRAE 62.1 and local codes
• Dedicated Outdoor Air Systems (DOAS) with ERV/HRV integration
• Make‑up air and balanced kitchen exhaust for restaurants
• Laboratory, salon, and healthcare ventilation strategies
• Warehouse and light industrial ventilation with zoning and destratification
• Parking garage exhaust and CO/NO2 demand control
• Duct design, fan selection/curves, and noise mitigation
• Filtration upgrades (MERV‑13+), source capture, and air quality monitoring

Our Engineering Process

We structure each project to deliver clear, buildable solutions and predictable outcomes.

• Discovery and code review: Occupancy, processes, schedules, and authority‑having‑jurisdiction (AHJ) requirements.
• Load and airflow calculations: Space‑by‑space outdoor air and exhaust (ASHRAE 62.1), pressure relationships, diversity, and ventilation effectiveness.
• System selection: DOAS/ERV, VAV/pressure control, energy recovery, and controls strategy to minimize energy while maintaining IAQ.
• Duct and fan engineering: Static pressure budgets, fan curve alignment, shaft sizing, acoustic considerations, and service clearances.
• Controls and sequences: Economizer logic, demand control ventilation, occupancy scheduling, and alarm thresholds documented for commissioning.
• Documentation: Permit‑ready drawings, equipment schedules, specifications, and Title 24 compliance forms.
• Field support: Coordination with GC/trades, submittal review, and test‑and‑balance/commissioning assistance.

Health‑First Indoor Air

Our mission is healthy air for a healthy life. We integrate proven strategies that improve IAQ while controlling operating costs.

• Right‑sized outdoor air with verified ventilation effectiveness
• MERV‑13+ filtration with attention to fan capacity and leakage
• Source capture/exhaust for contaminants where generated
• Energy recovery to temper outside air and stabilize humidity
• Continuous monitoring options for CO2, PM, and VOC trends

Trusted Product Knowledge

Our engineers maintain factory training with leading manufacturers: Fujitsu (Japan), Mitsubishi Electric (Thailand), Midea (China), Gree (China), and Haier (China). That training informs smart equipment integration, dependable control strategies, and designs that installers and service teams appreciate.

Why #1 AC Guys

• Fourth‑generation family business with 80+ years of engineering expertise
• Specialists in complex commercial projects, renovations, and occupied retrofits
• Balanced designs: performance, energy, acoustics, and maintenance access
• Clear, permit‑ready documentation and responsive coordination
• Local code fluency: ASHRAE, Title 24, CALGreen, and LA County requirements

Industries We Serve in Downey

• Offices and mixed‑use buildings
• Restaurants, kitchens, and food service
• Healthcare clinics, dental, and wellness
• Labs, salons, and specialty exhaust applications
• Warehouses, light industrial, and production spaces
• Retail, education, and community facilities

Deliverables You Can Build From

We provide clean drawings, calculations, and specifications that de‑risk permitting and construction.

• Ventilation schedules and space‑by‑space CFM
• Duct layouts, risers, and details
• Equipment selections and schedules
• Fan curves, static budgets, and sound notes
• Control diagrams and written sequences of operation
• Title 24 documentation and coordination notes

Service Area

We are based in Los Angeles and proudly serve Downey and the surrounding markets: Los Angeles County, Orange County, Ventura County, and Western Riverside County. Local presence means faster site walks, quicker answers, and smoother inspections.

Design‑Build or Plan/Spec—Your Choice

Whether you prefer design‑build with our direct field coordination or a traditional plan/spec approach, our team adapts. We can peer‑review existing drawings, value‑engineer alternatives, or develop a fresh commercial ventilation design aligned with your budget and schedule.

Get a Clear, Actionable Proposal

Tell us about your Downey project—occupancy, hours, space types, and constraints—and we will turn around a transparent scope, timeline, and fee. From first concept to final commissioning support, #1 AC Guys keeps your project moving and your occupants breathing cleaner air.

Ready to start? Contact #1 AC Guys for Commercial Ventilation Design in Downey today. Let our 4th‑generation engineers deliver healthy, efficient air—designed to perform on day one and for years to come.

Family‑owned. Engineer‑led. Built for complex projects.