See, if your old pump stopped working the renewal with an A pump will have played in the uprise in far less than a year. This is why I fit since years literally exclusively Alphas and Magnas. (Except in boilers with build in pumps)
Already in year one it starts paying for itself. Now there are customers that pay a lot more for electricity or have multiple pumps. The saving depends on so many factors. But none of my customers has not felt a noticable saving on his electricity bill.
Of course I do not go round and change working pumps. But where ever it needs replacement I feel the need to provide my customers with the cheaper option and that is an A pump.
Someone mentioned the energy saving bulbs not doing their job. Again there are a lot more different technologies and choosing the wrong one will provide you with the wrong result.
One prime example is a customer which had in the U/S room fitted 22 downlights with 50W and a beam angle of 25-35 degree. Room is not even 7' high. Roasting hot in summer, pretty dull at all times despite more than 1000W light fittings. These now got replaced with 1.5W warm white LED fittings with 120 degree beam angle and the room is so bright now. No thrown fuses anymore when a light fitting blows. The energy cost for using this room are now reasonable and in summer you be in it without a bucket beneath you for catching your sweat.
Before it was just putting another bulb in, now you have to consider light colour, beam angle, wattage, technology (LED,CFL,etc.). And to put cream on it the quality of those can differ so much (on different manufacturers) despite being nominal the same fitting.
