After air conditioning in Kings Park? Jay's Air has been doing it since 1991. For the homes: a 2.5kW bedroom split is $1,800 to $2,100 installed, a 5kW living room unit $2,500 to $3,000, ducted from $7,000 where the roofline suits. For the factory units: office and lunchroom splits sized for the space and the heat coming off the floor. Fault-finding is $250 plus GST, fix quoted first. 4.8 stars from 280+ reviews.
The honest rule both sides of the suburb: under $600 on a unit under 15 years, repair it. Past both, the money belongs in new gear.
Workshop offices are their own sizing problem
A factory-unit office cops heat from three directions - the western wall, the roller door, and the workshop floor itself. The 3.5kW unit that suits a same-sized bedroom drowns out here. We size factory offices for the real load, and they hold temperature through a full summer shift instead of losing the afternoon.
Houses get the standard treatment done properly - splits mounted into studs on the fibro, honest repair triage on older units. Numbers first: the sizing calculator and the pricing guide.
Kings Park sits on our Blacktown run with Blacktown, Quakers Hill and Seven Hills.