Heating, cooling & energy

Heat pumps, boilers and furnaces, hot water, air conditioning, solar and batteries, EV chargers and insulation: installed costs, running costs and the grants and tax rules that change the sums.

Cost guides in this topic

Heat pump hot water$4,500$3,500 – $5,850 Hot water system replacement$2,100$1,650 – $2,750 Split system air conditioning$9,000$7,000 – $11,700 Solar panels$8,900$6,950 – $11,600 EV charger$2,500$1,950 – $3,250

Articles

Solar panels

Rebates

Cheaper Home Batteries Program: how the discount works

26 September 2026 · 4 min read

Heat pump hot water

Rebates

Heat pump hot water: cost after STCs and state rebates

26 September 2026 · 4 min read

Solar panels

Guide

Solar battery cost by size: 5, 10 or 13.5 kWh?

26 September 2026 · 4 min read

Split system air conditioning

Guide

Split system air conditioning: sizing and costs

26 September 2026 · 4 min read