Second-storey addition under construction on a Kingsgrove brick bungalow
Kingsgrove NSW 2208

Air Conditioning Kingsgrove For Homes Going Up a Level

Kingsgrove's brick bungalows are popular with families who build up rather than move out. Adding a second storey changes how the whole house heats and cools, and the air conditioning plan should change with it.

Updated October 2026

Air conditioning in Kingsgrove is often part of a renovation. When a bungalow gets a second storey, the original system rarely has the capacity or ductwork to reach the new rooms, and upstairs bedrooms under a new roof get hot fast. Planning the air conditioning with the extension avoids expensive retrofits later. Alpha & Omega has worked on Sydney renovations since 1989.

Renovation timeline

When to Plan Air Conditioning in a Kingsgrove Second-Storey Addition

The earlier we are involved, the neater and cheaper the result.

  1. During design

    We look at the plans and recommend a system and outdoor unit location.

  2. Before framing upstairs

    Duct runs and pipe routes are agreed so the framing allows for them.

  3. Rough-in

    Ducts, pipes, drains and cabling go in while walls and floors are open.

  4. Downstairs changes

    The original system is adjusted, extended or replaced as planned.

  5. Fit-off

    Grilles, indoor units and controllers installed after plastering.

  6. Commissioning

    Both levels tested and balanced before you move back in.

Your options

Extend, Add or Replace? Air Conditioning for a Kingsgrove Extension

There are three main ways to handle a new upper floor.

Extend the existing system

Add upstairs outlets to the current ducted unit

Only works if the existing unit has spare capacity.

Best when: The system is fairly new and correctly sized for the extra rooms. Ducted →
Add a second system

A separate unit just for upstairs

Each level gets its own capacity and control.

Best when: The original system is in good shape but too small for both floors. Ducted →
Replace with one larger system

A new zoned system for the whole house

One modern unit with zones for each level.

Best when: The original system is old and due for replacement anyway.
Splits upstairs

Wall-mounted units in new bedrooms

A simpler option where ducting is difficult.

Best when: Roof space above the new storey is limited. Splits →
Kingsgrove FAQs

Kingsgrove Renovation Air Conditioning Questions

Can my existing ducted system cool a new second storey?

Only if it has spare capacity and the ductwork can reach the new rooms. Many original systems are already working at full capacity for the ground floor.

Is it better to add a second system for upstairs?

Often, yes. A separate upstairs system gives each level full capacity and its own control, and keeps one level comfortable if the other needs service.

When should I talk to you about my renovation?

While the plans are being drawn, before framing starts. That is when duct routes and outdoor unit locations are easiest to plan.

Why do new upstairs rooms get so hot?

They sit directly under the roof and collect rising heat from downstairs, so they usually need more cooling than ground-floor rooms of the same size.

Can you work with my builder?

Yes. We coordinate with builders on rough-in timing and fit-off so the air conditioning fits the build schedule.

What licences cover your installs?

ARC licence AU54289 for refrigerant handling, and NSW contractor licence 329810C.

Around Kingsgrove

St George Suburbs Near Kingsgrove

We work with renovators across the north of St George.

Beverly Hills 2209Bexley North 2207Bardwell Park 2207Narwee 2209Bexley 2207Clemton Park 2206
Kingsgrove renovations

Plan Your Air Conditioning With Your Extension

Send us your plans and a licensed technician will recommend the right setup for both levels, with a fixed price before work starts.

Builder coordination on timing
Fixed quotes* from your plans
Both levels balanced properly

*Call-out, travel and quote visit fees can vary depending on the job and where you are. We'll confirm any costs with you when you book, before any work starts.

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Sydney coastal climate specialists providing whisper-quiet, energy-efficient ducted and split system air conditioning solutions engineered for residential comfort.

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Licensed local technicians and an Authorised Daikin Specialist Dealer across Sydney, backed by a lifetime workmanship warranty.

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Direct Line: 1300 156 466

Licence: ARC Lic #AU54289 | NSW Contractor #329810C

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