How much does ducted air conditioning cost in Sydney in 2025?

Ducted air conditioning in Sydney costs $8,600 to $14,500 supply and install for a complete residential system. A 3-bedroom home with a 10kW system and 3 zones costs $8,600–$9,500. A 5-bedroom home with a 20kW system and 6–8 zones costs $12,000–$14,500. All prices include the indoor unit, outdoor condenser, all ductwork, zone controller, electrical connection, and 5-year manufacturer warranty. Payment plans from $19/week available.

What is included in a ducted AC installation price?

A full supply and install price from Sydney Air Conditioning Experts includes: the indoor unit, outdoor condenser/compressor, all ductwork and diffusers (ceiling outlets), zone controller, return air grille, all refrigerant lines and fittings, electrical connection by a licensed electrician, full commissioning and testing, and 5-year manufacturer warranty registration. No hidden extras.

Does the number of zones affect ducted AC price?

Yes significantly. Each additional zone adds approximately $400–$600 to the total installation price (motorised damper, zone module, additional duct run). A 3-zone system costs approximately $1,500–$2,000 less than a 6-zone system for the same sized home and brand.

Ducted Air Conditioning Cost Sydney 2025

By Sydney Air Conditioning Experts · Updated October 2026

Ducted air conditioning in Sydney costs $8,600–$14,500 for a complete supply and install in a typical residential home. The price varies based on home size (number of zones), brand selected, roof space accessibility, and electrical requirements. A standard 3-bedroom home with a 3-zone system sits at $8,600–$9,500. A 4–5 bedroom home with 6–8 zones typically costs $10,400–$14,500. All prices include the indoor unit, outdoor condenser, ductwork, zone controller, and commissioning — payment plans available from $19/week.

What's Included in the Price?

Every price quoted by Sydney Air Conditioning Experts includes the indoor unit, outdoor compressor, all ductwork and diffusers (supply and return air grilles), zone controller, electrical connection by a licensed electrician, full commissioning, and handover. No hidden extras. The quote you receive is the price you pay.

What Affects the Price?

Home size: Larger homes need higher kW systems and more ductwork — the biggest cost factor.
Number of zones: Each zone adds a motorised damper, zone module, and extra duct run. A 3-zone system costs ~$1,500 less than a 6-zone system for the same sized home.
Brand: LG and MHI start from $8,600; Samsung from $8,600; Mitsubishi Electric from $9,100. The difference is real but not huge for equivalent kW capacity.
Roof space access: Restricted or low roof space adds installation time and therefore cost.

Running cost: A 14kW ducted system running 8 hours/day at Sydney electricity rates (28c/kWh) costs approximately $800–$1,100/year.

Sydney Air Conditioning Experts — Call 0421 941 317 or email quote@sydneyaircon.net for personalised advice on any system.