Living in historic homes is like holding pieces of the past in your hands. But when it comes to installing an AC, many homeowners will wonder: how can you stay comfortable without losing the home’s character?

It’s a real concern, especially when real-life weather isn’t always so kind. 

From May to August, Gold Coast can get quite chilly with early mornings dropping to around 15°C and some days dipping even lower.

The sky often turns grey by midday and temperatures can fall sharply again. Without proper heating or cooling, even the most charming old homes can feel a little less cozy.

Don’t worry, here’s your complete guide to install an AC without losing the soul of your historic home. 

5 key factors to consider before installing an AC in the historic homes

Here are a few things you really need to consider to not end up losing the home’s character:

• Home structure and space limitations: Ceiling and under-floor space in old homes is often tight and delicate walls like old plaster make it tricky. 

• Electrical work: Many older homes have outdated wiring that can’t handle a modern air conditioner. Some only have a 110-volt, 60-amp service, barely enough for big appliances.

• Choosing the right system to protect the home’s character: Get ready for big, bulky ducts cutting across your beautiful ceilings or walls.

• Insulation and air sealing: Older homes leak cool air easily, especially through old windows, doors, and unsealed walls.

• Historic regulations and approvals: Some historic areas require special permits, even for installing an AC. Always check first, it’ll save you a lot of trouble later.
  

Overcoming challenges when installing an AC in historic homes

1. Upgrading outdated electrical systems

• Essential for safety and to keep your AC running smoothly. 
• Upgrading your panel and wiring keeps your home safe and ready for any future upgrades.

2. Finding space for ductwork

• High-velocity systems with small, flexible ducts or ductless mini-split systems are smarter options for cooling your home while protecting its original charm.
• High-velocity ducts can fit into tight spaces without major construction, while ductless mini-splits avoid the need for ducts altogether.

3. Sealing and insulating for better efficiency

• Before installing an AC, seal up cracks and boost insulation in your attic, walls and floors to keep the cool in.
• Focus on drafty spots around windows, doors, and old vents. A little sealing now can mean more energy-efficient later without overworking your AC.
  

Best AC options for your historic home structure

Ducted and slimline ducted AC

• If your historic home has enough ceiling and under-floor space, a slimline ducted system gives you sleek, hidden cooling without touching the vintage beauty.
• This has a central unit to cool your whole home through small, discreet ducts.

If space is too tight, you might also consider high-velocity systems, which use smaller, flexible ducts.

So where to place it?

• High ceilings usually mean you can run ducts through the roof.
• If not, under the floor is an option. Make sure crawl spaces are big enough and well-ventilated.

Quick notes:

• Installing ducts may need structural changes.
• Crawl spaces must be ventilated.
• Your electrical system might need an upgrade.

Some good picks for Ducted and slimline ducted AC: Mitsubishi PEAD-M-JAAD Series, LG Ceiling Concealed Duct

Multi-split systems AC

• Multi-split systems connect several indoor units to one outdoor compressor, letting you cool different rooms with different temperatures. 
• No major renovations needed.

Quick notes:

• Finding spots for return air vents can be tricky in older homes, so plan carefully.
• Installation is a bit more complex, so it’s best to hire a good technician.
• Regular maintenance keeps everything running smoothly.
• Make sure each indoor unit fits the room size for better cooling and savings.

Some good picks for Multi-split systems AC: Daikin multi-split (super multi NX series), Fujitsu Airstage multi-split systems

Split air conditioning systems AC

Split systems are perfect for homes with limited space. They don’t need ductwork. 

Just a wall-mounted unit connected to an outdoor compressor, making them great for cooling individual rooms.

If you want to avoid ducts altogether, ductless mini-split systems are another smart choice.

Quick notes:

• Plan indoor and outdoor unit placement carefully, especially return vents.
• Use closets or hallways for vents if space is tight.
• Choose a quiet, stylish unit that fits your home’s decor.

Some good picks for Split air conditioning systems AC: LG DualCool split system, Daikin Alira X split system

Installing an AC doesn’t have to mean tearing up your home’s structure or losing its charm. With the right system and the right team, you can have the best of both worlds.

Let DEEPCHILL installation services help you find the perfect fit for your historic home structure, with a lot of care and heart!