Heating system matrix
Paste installed costs, efficiencies and your fuel prices, and read annual running cost and cost per useful heat unit.
1 · Paste each system with its cost, efficiency and price per unit
FIRST-LOAD
Data note: Everything runs in this browser tab on the heating matrix: your system costs and fuel prices stays on this device, nothing is uploaded, and the reading is rebuilt only when you press run.
Perspective: Before: the reader compared headline prices. After: they can see a heat pump at 9.4 cents per delivered kWh against a boiler at 12.1.
2 · Read the heating matrix
Paid layer: the options file
one-time step · the free reading above stays complete
Free tier
- one complete matrix
- cost per delivered kWh per system
- state link for a partner
What $9 one-time adds
- four options kept on this device
- printable comparison with assumptions
- CSV of system, cost, efficiency and running cost
On a 12,000 kWh annual heat demand the running-cost difference runs to hundreds a year; the comparable it undercuts is a heating surveyor's report at $180–$400.
Local history (this device)
- No saved runs yet — your first run files here.
Your purchase is handled through secure checkout. When you return, your extras are ready on this device — no account, no fuss, and your work stays private in this browser.
Boundary and sources
This heating matrix works only on the system costs, efficiencies and fuel prices you paste you paste. It does not give technical heating advice, does not size a system, and does not guarantee running costs. The figures describe what you supplied, not what is true in the world. Confirm anything you plan to act on with a heating engineer who will put seasonal figures in writing before you rely on it.
- Every figure comes from the system costs, efficiencies and fuel prices you paste you paste; nothing is looked up, scraped or asserted as verified.
- Method: cost per delivered kWh = fuel price ÷ efficiency; annual running cost = that figure × annual heat demand
- Sample values are labelled samples — illustrative by design, not your data and not a quotation of any organisation's policy.
Mechanism: competence-autonomy-loop