At HeatPumps4Pools, we have a range of heat pumps specifically selected to be used to heat koi ponds.
The Dura+ range can operate down to -15c and have a “hot-gas” defrosting mechanism which will quickly clear away any ice that may form on the heat pump at low temperatures.
Heating a koi pond with a heat pump will always be significantly cheaper than using gas, oil or direct electric heating.
A heat pump will return between 2.8 and 6.7 times its input energy as heat depending on the air temperature.
This factor of efficiency is called the COP (Coefficient of Performance) and you can view a graph of how the unit performance varies with air temperature on the Dura+ product page Here
At an air temperature of 0c, the Dura+ has a COP of about 4.
The Dura+7 has an input power of 1.2kw and therefore with an air temperature of 0c, it will still output 4 x 1.2 = 4.8kw of heat for only 1.2kw of input power.
The COP rises to over 6 meaning that the heat pump can produce 6 x 1.2 = 7.2kw of heat from only 1.2kw of input power.
These heat pumps therefore have an efficiency of between 280% and 670%. A typical gas boiler will only be around 85% efficient and direct electric heating is about 95% efficient.
This high efficiency makes heat pumps the cheapest form of heating, even at low air temperatures.
As an example of running costs, the Dura+ 7kw heat pump has an input power of 1.2kw (5.2 amps).
If your electricity costs say 9p per kwh then the running costs of the heat pump would be 9 x 1.2 = 10.8p per hour while the heat pump is operating
Except in extremely cold spells, and if sized correctly, the heat pump should not need to run 24hrs a day.
The heat pump will heat the pond to the required temperature and will then switch off.
The running time of the unit will depend on the air temperature and how well the pond is insulated or covered.
Assuming the heat pump needs to run for say 7hrs per day, the running cost for a Dura+ 7 unit would be 7 x 10.8p = 75.6p per day
The use of the Duratech Dura+ range of heat pumps on koi ponds does not invalidate the warranty in any way.
The only provision in the warranty document states that for koi ponds, the PH must be kept between 7.0 and 8.5 which is fairly typical for most koi ponds.
The concentration of medicinal chemicals that may be used in koi ponds is not sufficient to cause any damage to the unit.
The Dura+ units have a titanium heat exchanger which is highly resistant to corrosion from all chemical types including chlorine in swimming pools.
A copy of the warranty document is listed at the bottom of the Dura+ product listing, or can be viewed Here
In extremely cold weather, the condendsation that drips from the heat pump evaporator coil can freeze in the bottom of the heat pump causing an ice build up.
We sell an optional kit that contains a special heating wire controlled by a low temperature thermostat.
The heating element only turns on when the air temperature falls below zero and turns off again when the temperature rises.
The kit comes with all necessary parts and full installation instructions
Click Here to Purchase this Kit
Below are some photographs of a heat pond being heated through the winter using a Dura+ heat pump.
Another example below of a Dura+ heat pump heating a koi pond taken March2010
The pond owner reported that the heat pump has worked extremely well and maintained the pond temperature at 15c despite the snow !
The running costs were reduced by approx 60%
Another recent installation was on a 14,000 gallon pond in Norfolk and used a Dura+14kw unit to heat the pool.
The pool owner reported:-
“I am writing to say I have been very impressed with the heat pump, I reckon over the past 3 weeks it has already saved me over £200 in heating oil”
The initial purchase cost of a heat pump may be higher than a traditional electric or gas pond heater, but you will soon recover the outlay through greatly reduced running costs.
Using a heat pump to heat your pond is also a more environmentally friendly method than using fossil fuels such as gas or oil and so you can also reduce CO2 emissions and do your bit for the environment !
You can see an excellent account of how another of our customers installed one of our heat pumps on their koi pond
Here are some quotes from our customers that are using Dura+ heat pumps on their koi ponds:-
Took delivery yesterday morning, lucky for me my husband is on hols this week so it was plumbed in immediately, temp was at 15.5 degrees,went to work, returned at 2200hrs and it was up to 17.5 degrees, got up at 0600hrs – 19 degrees, by early morning it reached the 20 degrees I had set it at, apparently it’s only kicked in once today to maintain the temp.
After seeing this unit working I now know that the old unit didn’t work as it should have from day one – all that time wasted – my poor fish – they’re now bombing around the pond at present (it’s going to cost me a fortune in food)
What an amazing piece of kit!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!.
Over the next week I will attempt to take some photo’s for you, for you to use if you want, also I am chairman of South Devon Koi Club, although we are having problems with our website at present (nobody knows how to load anything on it) will quite happily get a link put on for your company when we can find a man that can.
Next month I have a pond visit – 2 clubs visiting, if you have any info you wish for me to pass around, I would be quite happy to do so.
Many thanks for your help in resolving my problems.
|Thank you so much for your help, I’m so impressed with the pump, keeping a steady 24 degrees – fish are loving it. It was a big outlay for me, but one of the best I have made, would recommend this pump to anyone who is thinking of heating their pondRegards|
If you have any questions regarding the use of heat pumps to heat koi ponds, please Contact Us and we will be delighted to answer them for you.