Heat Saviour
A heat-pump delivery route designed around whole-system heating constraints.
Back home
Free calculator · No salesman · No day off work
Run your own numbers. Nobody will knock on your door.
Choose who you are, start with your bill, and switch each technology on or off. Every figure updates live from what you enter.
Who are you calculating for?
What could my home cost to run, and could it become net-positive?
Enter one typical home. Every figure below updates from what you enter and select.
Choose how you begin
Start with what you know.
1 · Your home and energy bill
Use the numbers you already have
A recent bill is useful. Estimates are welcome and will receive a wider result range.
I know my tariff prices
Not sure what fits?
Describe what feels wrong at the property.
Get an AI-assisted starting combination of heat pump, ventilation and glazing, with the reasons made clear.
Choose what to compare
Build a joined-up plan
See the system
Real technologies, explained clearly
VorteXtract
Wet-heating gas removal. It is not ventilation, and no automatic saving is added here.
Breathe ventilation
Controlled airflow and moisture management, with performance checked at your property.
PassivGlas
Slim vacuum glazing considered as an installed whole-window specification.
Gateway Pro
Amporah’s pre-launch monitoring, optimisation and flexibility layer.
This is educational screening, not a heat-loss survey, system design, quotation or promise. Your result changes when evidence improves.
Ready for a more accurate figure?
Share what you can see yourself in the self-survey. Your estimate comes with you.
Home Energy Model
A year, understood half hour by half hour.
HEM is the government’s developing successor methodology to SAP. It models a standardised home across 17,520 half-hour periods. Breathe uses the same direction of travel to design measures together, then keeps modelled expectations separate from what the real building later measures.
Understand HEM in plain English