This a claim you have made previously, and you have drawn improper conclusions about why your heating is inadequate and blamed the system as not being "efficient" when that is probably not the case.
There is a growing body of irrefutable evidence that Heat Pumps can work, and when set up correctly they are also very effective and do reduce operating costs.
If your heating system cannot effectively provide the heat you want there must be some reason why it's not providing you with what you expect:-
- The system designer may have misunderstood what you expected your system to do.
- The system designer may not have understood the environmental conditions of your location.
- The system designer may have got the calculations wrong.
- The system designer has not specified the correct components.
- Environmental conditions may have deteriorated since the system was specified
- If you set a budget cap for the project, it might have precluded the use of correctly sized system components.
- The contractor may have not followed the specific design correctly.
- The contractor may have not been able to obtain or fit the optimum components.
- The contractor may have incorrectly installed some parts of the system compromising the overall performance.
- Some parts of the systems may be defective. or have worn possibly through improper use.
- Perhaps you do not understand how to use the system for its best performance.