Sorting through all the hot water heat pump possibilities can be confusing and time consuming, but the top three list below can save you time and money.
It's based on performance results so the three hot water heat pumps listed in each country are top of their class and very efficient.
The domestic hot water heat pump top three ranking is available free of charge.
Choose your country below, then complete the form beneath it and I will e-mail the relevant list to you right away...
In order for manufacturers and suppliers to qualify for the Eskom hot water heat pump rebate they need to meet some minimum requirements which affect their efficiency.
Some of the more important ones are that the coefficient of performance for integrated air to water heat pump systems have to be more than 2.8 and the outlet temperature without back-up must not be less than 55 C. The integrated system warrantee should be 1 year, the compressor should be 5 years and the circulation pump should be 3 years at minimum. There are another 15 more stringent requirements that need to be met.
I only used the systems which passed the Eskom qualification as contenders for the list, finally whittling it down to the three that have the best coefficient of performance (COP), which is defined as the ratio of heat produced to energy expended.
The US Department of Energy makes the rules and regulations regarding the test procedures to determine the energy factor (EF) of hot water heat pumps.
Energy Factor (EF) is the ratio of useful energy output from the water heater to the total amount of energy delivered to the water heater. The higher the EF, the more efficient the system is.
The top three on the list are the systems with the highest EF as measured using the DOE test procedures, which have also achieved Energy Star status.