Prospective buyers should firstly obtain a payback time assessment for that solar heater in their particular conditions of use, which are more important than the general specifications of that heater.
The written payback time assessment should be freely provided by the installer with the warranty of the solar heater or drier because the installer has the best knowledge of that solar heater.
Alternatively, the payback time assessment can be done by another solar energy engineer, but its cost should be small enough not to diminish the overall economical performance of that solar heater.
Q Solar provides warranted payback time assessments on the financial performance of solar heaters.
Q Solar heaters deliver heat at about 1/3 of fuel price because of their short payback time.
We are proud for having made solar energy the most economical source of heat.