Australian Heat Pump Hot Water Rebate & Payback
Heat pump vs gas hot water (AU): rebate stack, net outlay and payback verdict by postcode.
Should I use this
Quality & Safety
Based on automated analysis of tool definitions and protocol compliance.
Context Cost
This is the approximate number of tokens consumed each time the server's tools are loaded into a model's context. Higher counts reduce the attention available for other tasks.
Install
One-Click Install
Add this to your `claude_desktop_config.json` file:
{
"mcpServers": {
"au-hot-water-payback": {
"url": "https://heatpump.sourcemill.ai/mcp"
}
}
}Remote endpoints
https://heatpump.sourcemill.ai/mcpstreamable-httpWhat it can do
Tool inventory
Tools (1)
🟢check_hot_water_switch(postcode, current_system, people, gas_only_for_hot_water, replacement_due, ...)
Use when someone asks whether a heat pump hot water system is worth it in Australia, which rebates they can stack, how much a heat pump costs after rebates, or how long it takes to pay off — including "can I combine the STC rebate with Victorian Energy Upgrades or Solar Victoria", "do I qualify", and "is a heat pump cheaper to run than gas". Given a postcode, the current hot water system and a few household facts, returns the rebates actually stackable at that postcode (with each scheme's eligibility gates and source), the net-of-rebate outlay, the payback period, and which term — rebates, the avoidable gas supply charge, the energy saving, or a replacement you were buying anyway — is really carrying the decision. Modelled estimate, not financial advice.
Input Schema
{
"type": "object",
"properties": {
"postcode": {
"type": "string",
"description": "AU postcode — rebate eligibility is postcode-gated"
},
"current_system": {
"type": "string",
"enum": [
"gas_storage",
"gas_instant",
"electric_resistance",
"none"
],
"description": "what you have now"
},
"people": {
"type": "number",
"description": "household size (drives hot water demand)"
},
"gas_only_for_hot_water": {
"type": "boolean",
"description": "true if hot water is your last gas appliance, so the daily supply charge can be avoided"
},
"replacement_due": {
"type": "boolean",
"description": "true if the existing system is failing and you were replacing it anyway"
},
"owner_occupier": {
"type": "boolean",
"description": "tenure — gates the means-tested state rebates"
},
"household_income": {
"type": "number",
"description": "combined owner taxable income, for means-tested schemes (Solar Victoria caps at $150,000)"
},
"property_value": {
"type": "number",
"description": "property value — Solar Victoria requires under $3,000,000"
},
"system_age_years": {
"type": "number",
"description": "age of the system being replaced; Solar Victoria requires at least 3 years"
},
"building_age_years": {
"type": "number",
"description": "age of the building; Victorian Energy Upgrades requires at least 2 years"
},
"locally_made": {
"type": "boolean",
"description": "an eligible locally made unit, which raises the Victorian caps"
}
},
"required": [
"postcode",
"current_system"
]
}Recorded Call Examples
check_hot_water_switchInput Parameters
{
"postcode": "example-1",
"current_system": "example-1",
"people": 1,
"gas_only_for_hot_water": false,
"replacement_due": false,
"owner_occupier": false,
"household_income": 1,
"property_value": 1,
"system_age_years": 1,
"building_age_years": 1,
"locally_made": false
}Output Result
{
"result": {
"content": [
{
"type": "text",
"text": "{\"postcode\":\"example-1\",\"state\":null,\"found\":false,\"verdict\":\"unknown\",\"grossInstall\":0,\"rebateTotal\":0,\"netInstall\":0,\"counterfactual\":0,\"netOutlay\":0,\"annualSaving\":0,\"energySaving\":0,\"supplyChargeSaved\":0,\"paybackYears\":null,\"tenYearNet\":0,\"rebates\":[],\"drivers\":[],\"dominantDriver\":null,\"headline\":\"Not an Australian postcode — rebate eligibility is postcode-gated, so there is nothing to solve.\",\"notes\":[],\"schemesConsidered\":0,\"unquantifiedSchemes\":[],\"stateScheme\":{\"available\":false,\"count\":0,\"statement\":\"Postcode could not be resolved, so no jurisdiction could be determined.\"},\"eligibilityVerified\":false,\"valueVerified\":false,\"dataVerified\":false,\"verifiedOn\":null,\"disclaimer\":\"Modelled estimate, not financial or energy advice. Rebate and tariff figures are UNVERIFIED — confirm every dollar against the scheme’s own published rules and your written quote before you buy.\"}"
}
]
},
"durationMs": 29
}Community
Evidence