Heating Bill Calculator

A heating bill calculator that answers the questions you actually ask every winter.

"How much would I save by turning the thermostat down one degree?"
"I'm out for six hours — eco mode, or just switch it off?"
"Is my heating bill high for a place this size?"

This is not just usage times unit price. Enter this month's bill once and the app works
backwards to estimate how quickly your home loses heat, then shows what changes when you
change the conditions.

■ What it calculates
· One degree lower — the difference for this month and for the whole season (Nov-Mar)
· Away: eco mode or off — which is cheaper, and how long the reheat takes when you get back
· Heating hours what-if — from X hours a day to Y hours, what changes
· Is my bill high? — where you sit in a reference band for your size, system, region and month
· Compare heating types — the same heat delivered by city gas, district heating, electricity, kerosene or LPG
· Bill calculator — meter reading (m³ / Mcal / kWh) to an itemised bill

■ How it is built
· Supports city gas, district heating and electric heating, including condensing boiler efficiency.
· Regional reference rates are bundled, but you can enter the unit price from your own bill — that is the accurate way.
· The source and effective date of every bundled rate is shown inside the app.
· Works fully offline and collects no personal data. What you enter stays on your phone.

■ Please note
All figures are estimates based on published tariffs and long-term average temperatures.
They are not a guarantee of savings, and your actual bill will differ depending on insulation,
household size, floor level, weather and your contract type.