Are the results exact?
No. They are estimates based on the values entered. Variable appliance loads, tariff details, taxes, fixed fees, and missing devices can change actual bills.
What currency should I use?
Use any currency, but keep the entered price and the cost output in the same currency. The tools do not automatically detect your country or retrieve current rates.
Where can I find the right wattage?
Check the rating plate or manual for electrical input. Cooling capacity, BTU/h, and energy output are not interchangeable with electrical input watts.
Do calculations send my entries to a server?
The calculator scripts process the entered values in the browser and do not submit them to WattWise Lab. The hosting provider may still process ordinary request logs.
Can I use the solar calculator to decide whether to buy a system?
Use it as an initial scenario tool only. Confirm site-specific production, installed costs, import tariffs, export compensation, maintenance, and financing with appropriate providers and local rules.
Why does my result differ from the electricity bill?
The tool might omit fixed charges, taxes, tariff tiers, time-of-use pricing, demand charges, and equipment not included in your list. Input power and runtime may also be estimates.
How can I report a broken calculator?
Email support@gxnew.com with the URL, input values, and what happened.