How We Improved Cooling Performance & Noise Levels in a Bomaderry Renovation With a Modern Split System Upgrade
Introduction
Location: Bomaderry
Service: Split System Installation & Replacement
Client Type: Residential / Renovation Project
Outcome: Quieter cooling, better airflow, cleaner aesthetics, and reduced energy use
A Bomaderry homeowner undergoing a full interior renovation needed to replace an ageing split system that struggled during summer and clashed with the new modern aesthetic. They wanted a quieter, more efficient system that could cool the open-plan living space evenly — without bulky grille designs or high running costs.
This case study outlines how Denali Air Conditioning designed and installed a sleek, high-performance solution ideal for Bombaderry’s humid coastal summers.
Summary of Results
- Significantly quieter operation than previous unit
- Stronger, more even cooling coverage across open-plan space
- Reduced running costs with a 4-star energy rating
- Modern appearance suited to renovated interior
- Perfect for Bomaderry’s warm, humid summer climate
Client Background
The homeowner had begun a full renovation and needed to replace the old split system, which:
- Was loud
- Struggled to cool the full living/dining/kitchen area
- Looked outdated and mismatched the new interior design
- Used more energy than necessary

They wanted a refined, efficient solution with improved airflow and quieter operation — essential for open-plan living
The Challenge
We identified several key issues:
- The previous unit was undersized for the enlarged living space after renovations
- Poor airflow direction and old louvres meant cold spots in the dining area
- Noise levels were noticeable during TV and nighttime use
- The outdoor unit was in a sun-exposed position, reducing efficiency
- Aesthetic mismatch with the renovated interior
Strategy & Actions Taken
Cooling Load Calculation & System Selection
We performed a detailed load calculation, ensuring the new system could cool the expanded open-plan layout.
Chosen system:
Daikin 7.1kW Split System

- Stylish slimline profile
- Very quiet indoor and outdoor units
- Excellent coastal performance and corrosion resistance
Optimal Placement & Airflow Design
We repositioned the unit higher and more centrally to direct airflow across the entire space rather than into a corner.
Vibration & Noise Reduction
- Rubberised mounting pads for the outdoor unit
- Adjusted line-set routing
- Optimised return air paths to minimise vibration transfer
Outdoor Unit Positioning
Relocated to a shaded southern wall to improve performance and lifespan — ideal for Bomaderry’s warm summers.
Clean Installation
- Pipework concealed in wall cavity
- Minimal visual impact
- Neat finish that suits the renovation’s modern aesthetic
Results
| Measurement | Before | After |
|---|---|---|
| Noise Level | Noticeable / intrusive | Whisper-quiet, barely audible |
| Cooling Coverage | Inconsistent | Strong, even across entire space |
| Aesthetics | Bulky, outdated | Sleek, modern, matches renovation |
| Energy Efficiency | 1.5 star | 4 star |
Client Feedback
“The new system is unbelievably quiet and cools the whole area perfectly. It fits the renovation beautifully. The difference is night and day.”
Related Services & Locations
Want Similar Results?
If you’re renovating in Bomaderry or the Shoalhaven and want a modern, energy-efficient cooling upgrade, we can design the perfect solution for your space. Call Denali Air Conditioning today on 0480 170 143 or submit a request for an online quote.
