Well if you want to call my comparisons to larger appliance a variable, so be it. I just don't agree that such an issue should be made about vacuum cleaners when the larger appliances that have a higher wattage and are used daily should be overlooked when their energy promotions don't really make sense.
My moan is the fact that you're still using up a heck of a lot of power just to activate a large appliance - regardless of the promise of energy ratings - and these energy ratings have provided a source of much debate with most buyers realising that the energy ratings don't really make much sense when the total watts to run an appliance is discovered - that is why, compared to vacuum cleaners and general floorcare appliances, the mere mention of total power watts can be harder to find on large appliances, no matter how much of an energy rating it actually has. One could therefore say that the energy rating system is therefore flawed - exactly playing to the marketing strings that air watts info on vacuum cleaners provide.
One example that cropped up with me is on my Bosch dishwasher. It comes with a supposedly "eco" tag, and granted it uses up to 14 litres of water compared to a general 16 litres on other rivals,but here's what I found when it came to actual performance:
<span style="font-family: arial, helvetica, sans-serif;">"<span style="font-size: small;">...<span style="line-height: 19px; font-weight: normal;">If if you want the quickest wash setting you'll have to select the 33-minute "Quick Wash" function out of the three remaining programs and not all kinds of food ware get cleaned properly. For a start, plastics don't get a chance to dry despite the low energy "Eco-saving" 45 °C temperature. Dishes and cutlery come out touch dry but cookware such as Teflon non-stick pans are damp to the touch and I was surprised to find on some pans, grease had not been cleaned off properly. Glassware on the quick programme however, comes out glinting and clear, and apart from grease, other food stains vanish, leaving cutlery and dishes with a sparkling and clean finish. Aside from the 33-minute Quick Wash function, the latter programs are disappointing in their time duration and strangely less-thought out - for example: </span></span></span>
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"Normal 65 °C," lasts a total of 2 hr, 15 minutes, or 2 hr and 5 minutes with the half load additional program selected.
"Economy 50 °C," takes a shockingly long 3 hr and 34 minutes or 2 hours 34 minutes with the half load additional program selected. Brands these days argue that because the longer a lower temperature wash takes these days, the appliance saves the energy for a longer wash. But if it takes that long on an Eco program, the machine's main wattage is left on for longer. How can that be economical to run>?</span>
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"Pre-Rinse" can take up to 15 minutes alone with no option for half load facility.
"Quick Wash," takes 33 minutes with no option for a half load facility.</span>