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Perhaps it may increase if I am making it work really hard, (bearing in mind I am no expert on electrical appliances), however if a product is rated at using a certain amount of power, and producing a given output (flow rate), then if I ask it to produce the flow rate the pump is sold for, then I will expect it to also do so at the wattage rate it is detailed at requiring. I expect I will loss this flow rate if I have the pump working at head, but I still expect it to be somewhere near the rated wattage. If I have a pump, and it has “X” wattage at “X” LPH, I expect it to do this rate of flow at this wattage.
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When I read that a pump has “X” wattage – at what ever LPH, I will assume that the X wattage will be how much power the pump will use to produce its flow rate, and following on from that, what the pump will cost me to run. Leave car analogies out of it – you’ll just confuse me. “…false pretences…” it appears that the product may be under-rated rather than over-rated, and possibly with good reason. Most things in life are trade-offs.Įheim, generally, have an excellent reputation for products that are reliable and long-lasting. We then get into matters of increased efficiency (possibly lighter-weight construction) versus reliability and longevity. If two or more suitably sized pumps were asked to do the same job then, theoretically, the only differences in power consumption would be due to the efficiencies of the motor/pump themselves. Theoretically twice as much power will be needed to move ‘2X’ volume of water to a height of ‘Y’ metres in ‘Z’ seconds and so on. Theoretically, the power needed to move ‘X’ volume of water to a height of ‘Y’ metres in ‘Z’ seconds can be calculated. Again, that would be a good thing and a responsible way of rating the pump. Is it possible that Eheim have rated their pumps as having 50 watts of available power? (after losses due to friction etc).
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The load (or resistance) applied is going to increase the power consumed and therefore the running costs.
![eheim 2260 power consumption eheim 2260 power consumption](https://cdn.shopify.com/s/files/1/1161/1898/products/thumb_11_grande.jpg)
Regardless, any electrical motor, whether it’s running a pump or any other device, is going to have a certain power consumption when running without a ‘load’ (bearing friction, air resistance to the cooling fan etc). Therefore, if an Eheim motor was capable of producing almost twice the advertised (rated?) power, couldn't that be a good thing? If I was to purchase a motor vehicle that the maker claimed to have a 100kw motor and it actually produced 200kw I think I would be happy (I belong to the 'No substitute for power' brigade!). Is it as the power produced by the motor or as the power consumed to produce the claimed performance? I would like to see how Eheim quote the wattage of their products. or if indeed Eheims are sold under false pretences? I would like to know if I alone have this problem, or if indeed Eheims are sold under false pretences? My meter wasn't able to check on electrical equipment of too low a wattage, so I couldn't check my Eheim 15 watt (?) 1048.Ĭan others who read this, if you have equipment to check, could you please check the wattage on your Eheim pumps, and please verify or refute wether your Eheim Hobby pumps (or other Eheim gear) are using the wattage they are rated at, and post back. However, if in fact their wattage is incorrectly rated, and they are virtually double their stated wattage - perhaps they are not as good as I have always understood them to be. These Hobby pumps can be a bit limited if you need to move some water in a vertical direction, however, provided you run them within their abiltites, their reliability, quite running and cost of running I have always felt made up for this. However, with the reading I had returned on their true cost of running, this "balance" (purchase cost verses running costs) for me has been altered. I have always felt that their initial high purchase price (and cost of replacement parts) were offset by their low cost of running. I have always though Eheims are good pumps, good for their reliability, their silent running, and - their low wattage. But, what has surprised me the most is when I checked my Eheim 1060 and Eheim 2260 Hobby Pumps (both operated at zero head).īoth have marked on them that they are a 50 watt pumps. I expected to find a little bit of variation, which I did. I checked most of my fish tank equipment, to work out the watts they actually used. A week ago, I had the loan of a "Tong Meter" which checked on the actual wattage used by electrical equipment.