Aircon Box Up vs Trunking in Singapore: The Complete Guide for Your Home

Aircon box up vs trunking, which one is right for you? In a city like Singapore, where space is precious and design matters, the way your air conditioning is installed can have a big impact on the overall aesthetics of your home.

Most homeowners don't realise this until they see unsightly air conditioner trunking running across their freshly painted walls.

If you're planning a new aircon installation—or considering a renovation—understanding the difference between aircon box up and trunking could save you from future design regrets and costly mistakes.

This comprehensive guide will help you understand the pros and cons of each method, cost differences, and how to choose the right option based on your lifestyle, budget, and renovation timeline.

Key Takeaways:

• Box up is sleek but costly; trunking is functional and affordable

• Consider your renovation timeline and design goals before deciding

• Combine both approaches when possible for aesthetics and practicality

• Always plan concealment options before installation begins

• Regular maintenance access is crucial for the lifespan of your aircon system

What Is Aircon Box Up?

An aircon box up is a carpentry solution used to hide aircon trunking (the piping that connects indoor and outdoor aircon units). Instead of leaving the trunking exposed, contractors build a box around it using materials like plywood, MDF, or gypsum boards. It's often integrated into feature walls or ceiling designs and is a common practice in homes where aesthetics matter.

Materials Used for Box Up Construction:

Primary Materials:

• Plywood (most common for a durable finish)

• Laminates (for decorative appeal)

• MDF boards (cost-effective option)

• Gypsum or plasterboard (less common for Singapore HDBs)

Additional Components:

• Screws and brackets for secure mounting

• Primer and paint for finishing

• Insulation materials to prevent condensation

• Access panels for future service needs

Pros of Box Up:

• Visually seamless and clean appearance

• Matches interior design themes

• Can be integrated with lighting (e.g., cove lights)

• Protects pipes and cables from damage

• Increases property value and appeal

• Prevents dust accumulation on exposed trunking

Cons of Box Up:

• Higher labor costs due to carpentry work

• More time-consuming installation process

• Harder to access for the aircon maintenance or repairs

• Potential for mold growth if not properly ventilated

• Limited flexibility for future modifications

What Is Aircon Trunking?

Air conditioner trunking refers to the standard PVC conduit that runs along the walls or ceilings to contain aircon piping. It's the default method used in most installations and is especially common in BTO flats or rental units.

The trunking houses not only the refrigerant pipes but also electrical wires and water pipes that are essential for your air conditioning system to function properly.

Types of Trunking Available:

Standard PVC Trunking:

• Most affordable option

• Available in white or grey

• Standard sizes from 25mm to 100mm width

Slimline Trunking:

• Reduced profile for a less bulky appearance

• Better aesthetic than standard trunking

• Slightly higher cost but still budget-friendly

Decorative Trunking:

• Textured or colored finishes

• Blends better with interior design

• Mid-range pricing option

Pros of Trunking:

• Budget-friendly installation

• Quick installation process

• Easy access for aircon servicing, check up, or repairs

• Simple to modify or extend

• No risk of trapped moisture

• Immediate visibility of any condition issues

Cons of Trunking:

• Trunking is visible and can appear bulky

• PVC may yellow or crack over time

• Not ideal for design-conscious homeowners

• Dust accumulation on exposed surfaces

• May clash with furniture and interior design

Aircon Box Up vs Trunking: Comprehensive Comparison

Feature	Box Up	Trunking
Aesthetics	Sleek, modern appearance	Visible piping, bulky
Cost	$$$ (higher due to carpentry)	$ (affordable)
Installation Time	Longer (carpentry required)	Faster installation process
Maintenance Access	Requires dismantling	Easily accessible
Flexibility in Design	Customisable (L-box, wood grain)	Limited design options
Best for	Renovated homes, condos	Budget installs, rental units
Durability	High (if properly constructed)	Moderate (PVC degradation)
Moisture Risk	Higher (if poorly ventilated)	Lower (open air circulation)

When to Choose Aircon Box Up

Ideal Scenarios:

For a Complete Home Renovation:

• You're renovating your home from scratch

• Integration with overall interior design is crucial

• Long-term living plans justify the investment

Design-Conscious Homeowners:

• You want your home to have a minimalist, clean look

• You're integrating the box up with a feature wall or lighting

• The appearance of your living space is a top priority

Property Value Considerations:

• You plan to live in the home long-term

• You want to increase property appeal for future resale

• You're willing to invest in premium finishes

Common Mistakes to Avoid:

Planning Mistakes:

• Not considering future maintenance needs

• Inadequate ventilation planning

• Poor coordination with other renovation work

Construction Mistakes:

• Using substandard materials

• Insufficient access panels

• Ignoring moisture management

When to Choose Trunking

Practical Scenarios:

Budget-Conscious Installations:

• You're on a tight renovation or installation budget

• You need to minimize labor costs

• Quick installation is a priority

Temporary Housing:

• You're installing the aircon in a rental property

• You plan to move within a few years

• Flexibility for future modifications is important

Maintenance-First Approach:

• You prefer easy access to your air conditioning unit

• Regular service and check up are priorities

• You want to avoid potential damage from concealed issues

Service Advantages:

Easy Maintenance Access:

• Quick identification of problems

• Reduced service costs

• Ability to inspect pipes and connections regularly

• Simple cable and wire replacement when needed

Popular Aircon Box Up Designs in Singapore

1. L-Box with Cove Lighting

Design Benefits:

• Conceals trunking while allowing ambient light to flow through the room

• Creates a sophisticated atmosphere

• Integrates seamlessly with modern HDB flat designs

• Provides indirect lighting that enhances the overall appeal

Technical Considerations:

• Requires proper spacing for heat dissipation

• Need to plan electrical wiring for lights

• Must accommodate both aircon pipes and lighting cables

2. Flush Wall Panel Integration

Design Features:

• Box up blends with the wall, creating a uniform design

• Completely hides all trunking and pipes

• Maintains clean lines throughout the room

• Can be painted to match existing wall colors

Installation Process:

• Requires precise measurements and planning

• More complex carpentry work

• Higher labor costs but superior aesthetic results

3. Wood-Laminate Finishes

Aesthetic Appeal:

• Adds warmth and texture to the room while concealing piping

• Complements furniture and interior design themes

• Available in various wood grain patterns

• Durable and easy to maintain

Material Benefits:

• Resistant to moisture and humidity

• Easy to clean and maintain

• Long lifespan with proper care

• Good insulation properties

4. Floating False Ceiling Concepts

Suitability:

• Common in condos or larger HDB flats

• Ideal for ducted aircon or hidden split units

• Creates impressive visual appeal

• Accommodates multiple fan coil units

Technical Requirements:

• Adequate ceiling height needed

• Proper ventilation planning essential

• Access panels for maintenance must be included

5. Minimalist HDB Styles

Design Philosophy:

• Slim-profile box ups in white or grey

• Maintains a clean, uncluttered feel

• Complements modern HDB flat aesthetics

• Budget-friendly yet stylish option

Understanding Your Air Conditioning System Components

Key Components That Need Concealment:

Refrigerant Pipes:

• Connect indoor and outdoor units

• Require insulation to prevent condensation

• Must be properly sized for optimal performance

Water Pipes:

• Handle condensate drainage

• Critical for preventing water damage

• Need to be sloped correctly for proper drainage

Electrical Wires and Cables:

• Power supply to the air conditioning unit

• Control signals between components

• Must comply with electrical safety standards

Fan Coil Unit Connections:

• Indoor unit mounting and connections

• Require secure and accessible installation

• Regular maintenance access is essential

Common Installation Mistakes:

Planning Mistakes:

• Inadequate space for future service needs

• Poor routing of pipes and cables

• Insufficient access for maintenance

Construction Mistakes:

• Using inappropriate materials

• Poor ventilation leading to moisture issues

• Inadequate support structures

System Integration Mistakes:

• Ignoring electrical requirements

• Poor coordination with other building services

• Inadequate planning for future upgrades

Cost Analysis: Box Up vs Trunking in Singapore

Trunking Costs:

Basic Installation:

• $100–$200 per room

• Inclusive of materials and basic installation

• Quick turnaround time

Enhanced Trunking Options:

• $150–$300 per room for decorative options

• Includes better materials and finishes

• Slightly longer installation process

Box Up Carpentry Costs:

Standard Box Up:

• $300–$600 per room

• Can go higher depending on complexity

• Materials, design, and size influence the cost

Premium Box Up Solutions:

• $500–$1,200 per room

• Includes premium materials and complex designs

• Integration with lighting and other features

Factors Affecting Labor Costs:

• Complexity of the layout

• Types of materials used

• Whether additional features (e.g., lights) are added

• Accessibility of installation area

• Coordination with other renovation work

• Timeline requirements

Maintenance and Lifespan Considerations

Box Up Maintenance:

Regular Inspections:

• Annual check up of concealed components

• Monitoring for any signs of moisture or damage

• Ensuring proper ventilation within the box structure

Potential Issues:

• Moisture accumulation leading to mold growth

• Difficulty accessing components for service

• Higher repair costs due to dismantling requirements

Lifespan Benefits:

• Protection from dust and physical damage

• Reduced wear on exposed components

• Professional appearance maintained over time

Trunking Maintenance:

Easy Access Benefits:

• Quick visual inspection of all components

• Simple cleaning and maintenance procedures

• Immediate identification of any condition issues

Long-term Considerations:

• PVC may require replacement after 10-15 years

• Regular cleaning to prevent dust accumulation

• Potential for UV damage if exposed to sunlight

Tips for Making the Right Choice

Assessment Checklist:

Budget Considerations:

• Compare total installation costs

• Factor in long-term maintenance expenses

• Consider potential property value impact

Design Goals:

• Evaluate importance of aesthetic appeal

• Consider integration with existing furniture

• Assess impact on overall interior design

Practical Needs:

• Determine frequency of required maintenance

• Consider accessibility requirements

• Evaluate long-term living plans

Professional Consultation Benefits:

• Expert assessment of your specific situation

• Recommendations based on your HDB flat layout

• Guidance on avoiding common mistakes

• Proper planning to prevent future issues

Hybrid Approaches: Best of Both Worlds

Strategic Combination:

Selective Box Up:

• Hide trunking to main living areas

• Leave service areas accessible with standard trunking

• Balance aesthetics with practicality

Phased Implementation:

• Start with trunking for immediate needs

• Plan for future box up during renovations

• Maintain flexibility for modifications

Cost-Effective Solutions:

Partial Concealment:

• Box up highly visible areas only

• Use decorative trunking in less prominent locations

• Achieve good appearance without full carpentry costs

Future-Proofing Your Installation

Technology Considerations:

• Plan for potential system upgrades

• Consider smart home integration needs

• Ensure adequate space for future modifications

Maintenance Planning:

• Include regular service schedules in your planning

• Budget for periodic maintenance and repairs

• Consider accessibility needs for aging homeowners

Environmental and Health Considerations

Moisture Management:

• Prevent mold growth through proper ventilation

• Monitor humidity levels in concealed spaces

• Ensure adequate drainage for water pipes

Air Quality Impact:

• Regular cleaning of accessible components

• Proper filtration in your air conditioning system

• Monitor for any signs of contamination

FAQs About Aircon Box Up and Trunking

Can I box up trunking after installation? Yes, but it's more difficult and costlier. The process involves working around existing installations, which can increase labor costs and complexity. Plan during renovation for best results.

Does box up affect aircon performance? No, when properly designed and installed, box up doesn't affect performance. However, it can make servicing and troubleshooting harder, potentially leading to higher service costs.

Can I paint over air conditioner trunking? Yes. Painting trunking helps it blend with walls if you don't want to box it up. Use appropriate primer and paint suitable for PVC surfaces.

Are there alternatives to box up and trunking? Yes. Some homes use custom ducted systems, false ceilings, or slimline trunking designs. Each option has different benefits and cost implications.

How often do I need to service my aircon with box up? Regular service is still required, typically every 3-6 months. However, the process may take longer and cost more due to the need to access concealed components.

What happens if there's a leak in boxed-up trunking? Leaks can cause significant damage if not detected early. This is why it's crucial to include proper access panels and moisture monitoring in your box up design.

Can I install box up myself? While possible for experienced DIY enthusiasts, professional installation is recommended to ensure proper ventilation, access, and structural integrity.

Our Professional Recommendation

For HDB Flat Owners:

Resale Flats: A box up makes sense if you're already doing full renovations. It enhances the overall interior design and removes visual clutter, adding to the property's appeal.

BTO Flats: Go with basic trunking unless your interior designer is coordinating a full box up layout. You can always conceal it later with feature walls or furniture arrangements.

Best Practices:

Hybrid Approach: Use trunking for function in service areas, then blend it with clever design elements like built-in wardrobes, shelving, or L-boxes in living spaces.

Professional Planning: Always consult with experienced professionals who understand both the technical requirements and aesthetic considerations of your specific situation.

Conclusion: Choose Based on Lifestyle and Budget

Both methods serve the same function: to hide and protect the pipes and wires that make your air conditioning system work. But they deliver very different outcomes in terms of look, cost, and serviceability.

Go with aircon box up if:

• Aesthetics and seamless appearance are a priority

• You're already renovating your HDB flat

• You want something permanent and beautiful

• You're willing to invest in higher labor costs for better appeal

• Long-term property value is important

Go with trunking if:

• You want affordability and fast setup

• You prefer easy access for the future service and maintenance

• You're working on a limited budget

• You need to avoid complex installation processes

• Quick completion is essential

The key is to avoid common mistakes by planning carefully and understanding the long-term implications of your choice. Consider the lifespan of your installation, the condition of your existing systems, and your future needs.

Remember, there's no single "best" choice – only the right choice for your specific situation, budget, and design goals. Take time to evaluate all factors, consult with professionals, and make an informed decision that you'll be happy with for years to come.

Ready to upgrade your aircon setup? Let 338 Aircon help you plan a smart and stylish solution that fits your budget and your home. Our experienced team can guide you through the process and help you avoid costly mistakes while achieving the perfect balance of functionality and appeal for your air conditioning system. Click here to get started.