Custom HVAC System Design

Every successful HVAC project begins with a system design that matches the building, climate and actual operating requirements.

YUJU EnvironTech provides customized HVAC system design and engineering support for residential, commercial and specialized building applications.

Our engineering approach considers cooling and heating loads, airflow, ventilation, humidity, indoor air quality, equipment configuration, controls, installation conditions and energy efficiency as one coordinated system.

Our HVAC Design Process

A customized HVAC system should be developed according to actual project conditions rather than using one standard solution for every building.

The design process can include:

Stage	Design Process
01	Project Information & Building Review
02	Cooling & Heating Load Evaluation
03	HVAC System Type Selection
04	Equipment Selection & Matching
05	Airflow & Air Distribution Design
06	Fresh Air, Humidity & IAQ Integration
07	Controls & Zoning Strategy
08	Technical Documentation & Final Design Review

What We Design

YUJU engineering support covers complete HVAC system planning rather than only individual equipment selection.

Design scope can include:

• Heating & Cooling System Selection
• HVAC Load Calculation
• Equipment Capacity Selection
• Airflow Calculation
• Duct Sizing & Routing
• Supply & Return Air Design
• External Static Pressure Evaluation
• Fresh Air Ventilation Design
• Humidity Control Integration
• Indoor Air Quality Integration
• Room Zoning Strategy
• Smart HVAC Controls
• Equipment Layout Planning

Cooling & Heating Load Evaluation

Correct equipment sizing begins with understanding the actual thermal load of the building.

Depending on the project information available, load evaluation can consider:

• Building Area & Ceiling Height
• Building Envelope
• Window Area & Orientation
• Outdoor Design Conditions
• Occupancy
• Lighting & Equipment Loads
• Fresh Air Load
• Building Usage
• Operating Schedule

The objective is to avoid both undersized equipment and unnecessary oversizing.

Airflow & Duct System Design

Good HVAC performance depends heavily on correct air distribution.

YUJU can support:

• Room Airflow Allocation
• Main Duct Sizing
• Branch Duct Sizing
• Supply Air Routing
• Return Air Routing
• Air Velocity Control
• External Static Pressure Calculation
• Diffuser & Grille Selection
• Airflow Balancing Strategy
• Noise Control Considerations

Proper airflow design helps improve comfort, reduce excessive air noise and support stable equipment operation.

Fresh Air & Indoor Air Quality Design

Modern HVAC design increasingly requires coordination between heating and cooling equipment and indoor air quality systems.

Depending on project requirements, YUJU can integrate:

• Fresh Air Ventilation
• ERV / HRV Systems
• Outdoor Air Filtration
• High-Efficiency Filtration
• Humidity Control
• Air Purification Equipment
• CO₂ Monitoring
• Indoor Air Quality Sensors

Humidity Control Design

Humidity loads vary significantly according to climate, fresh air volume and building use.

YUJU can coordinate:

• Whole-House Dehumidification
• Commercial Dehumidification
• Fresh Air Dehumidification
• Whole-House Humidification
• AHU Humidity Control
• Humidity Sensors & Controls

Smart Zoning & Control Strategy

Different rooms and building zones rarely have identical thermal loads or usage patterns.

A customized HVAC control strategy can include:

• Independent Room Temperature Control
• Motorized Damper Control
• Variable Airflow
• Smart Thermostats
• Temperature & Humidity Sensors
• CO₂ Sensors
• Equipment Interlock
• Operating Schedules
• Remote Monitoring
• BMS Integration

Applications & Industries

YUJU provides customized HVAC engineering support for different building types and applications.

Residential Buildings

Whole-house heating, cooling, fresh air, humidity control, filtration and smart zoning solutions for villas, apartments and custom homes.

Commercial Buildings

HVAC design for offices, retail buildings, restaurants, mixed-use buildings and commercial facilities requiring reliable comfort and efficient operation.

Hotels & Hospitality

System design focused on guest comfort, room control, fresh air, quiet operation and practical maintenance.

Healthcare Facilities

Project-specific HVAC solutions can consider ventilation, filtration, humidity management, room pressure and environmental requirements according to the application.

Laboratories

Laboratory HVAC design can consider temperature, humidity, ventilation, filtration, airflow and pressure relationships according to research or process requirements.

Greenhouse & Controlled Environments

Climate solutions can integrate cooling, heating, dehumidification, ventilation and air circulation according to crop and facility requirements.

Industrial Applications

Customized equipment and HVAC system configurations can be developed for factories, workshops, warehouses and selected process environments.

HVAC Systems We Can Design Around

• Central Ducted Heat Pump Systems
• Mini Split Heat Pump Systems
• Air Source Heat Pumps
• Ground Source Heat Pumps
• Water Source Heat Pumps
• Air Handling Units
• Fan Coil Systems
• VRF / VRV Systems
• Rooftop Packaged Units
• PTAC Systems
• Fresh Air & DOAS Systems

What Information Do We Need?

More complete project information allows a more detailed HVAC design.

Typical information includes:

• Architectural Drawings
• Floor Plans
• Project Location
• Building Area & Ceiling Height
• Building Usage
• Occupancy
• Local Climate Conditions
• Cooling & Heating Requirements
• Fresh Air Requirements
• Indoor Temperature & Humidity Targets
• Electrical Specifications
• Installation Restrictions
• Special Application Requirements

If complete information is not available at the early project stage, YUJU can begin with the available data and identify what additional information is required.

Engineering Design Deliverables

Depending on project scope, YUJU engineering support can provide:

• HVAC System Recommendation
• Cooling & Heating Capacity Schedule
• Equipment Selection Schedule
• Airflow Calculation
• Duct Size Recommendations
• Equipment Layout Suggestions
• Fresh Air System Configuration
• Humidity Control Strategy
• Control & Zoning Strategy
• Product Technical Data
• Installation Guidance

The exact engineering deliverables depend on project scope and the information supplied by the customer.

From Design to Equipment Supply

YUJU can continue supporting the project after the HVAC design stage.

Our integrated support can include:

• Equipment Selection
• Product Matching
• Customized HVAC Products
• OEM & Private Label Support
• Technical Documentation
• Manufacturing Coordination
• Quality Inspection
• Global Delivery
• Technical Support

Why Work with YUJU

• Project-Based HVAC Design
• Residential & Commercial Engineering Experience
• Airflow & Duct Design Support
• Fresh Air & Humidity Integration
• Smart HVAC Control Solutions
• Broad HVAC Product Portfolio
• OEM & Customized Equipment Support
• International Project Coordination

Start Your Custom HVAC Design

Send YUJU your project drawings, building information, project location and indoor climate requirements.

Our team can evaluate the project and develop a suitable HVAC system concept, equipment configuration and engineering proposal.