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26 Sep 2024

Resistive Storage vs. Heat Pump

Education Hub

0:02

Hey, it's Kyle here from KDEC to give you some tips for choosing the right hot water system for your home.
0:09

When considering a new hot water unit for your new build or existing home, a lot of people have been mentioning heat pump technology.
0:14

While they are much more efficient when comparing how much power they use, or the coefficient of power, keep in mind that there is more to the story than that.
0:23

If you're in a warmer climate up north, the heat pumps will thrive as the outside ambient temperature is consistently higher, which aids the coefficient of power and recovery rates.
0:32

However, if you're fortunate enough to suffer from the colder climates like us, the COP will drop rapidly, and thus, the recovery rate will also suffer.
0:40

What this means for the household is a hot water unit that will take a much longer time to heat up, and we all know how cranky a family can get with no hot water.
0:48

Electric storage hot water tanks have been around for decades and are as simple as they come.
0:54

While it is true that they're not as nearly as efficient as a decent hot water pump, we are able to counter the inefficiencies with a larger PV system for a similar cost and enjoy the same recovery rate across the year, keeping everyone happy.
1:06

Introducing a resistive diverter, such as an Ohm Pilot or a Catch Power, means that we can treat this hot water tank like a battery,
1:13

sending surplus PV energy into the tank that would otherwise go to the grid for a minimal feeding tariff.
1:18

Consider the reliability and repair cost. A heat pump has many moving parts and can be costly to repair as multiple trades may be required to diagnose it.
1:25

If the heat unit has lasted past its warranty period, you might not be able to get the spare parts and will be up for a whole new unit.
1:35

Electric storage units can be repaired by any plumber or electrician, and you'll find your units running for 20-plus years.
1:40

Our main advice is if you're looking to go down the heat pump path, spend the money on a decent unit, especially in the colder climates, as you require a backup element for when the unit freezes over in winter.
1:51

If it's too good to be true, it probably is. Design the system properly for whatever unit you decide to go with.
1:58

Come and see the KDEC team to work out what is best for you because tomorrow matters.

In this video, a member of the KDEC team will provide helpful tips on how to choose the right hot water system for your home.

Although many people prefer the energy efficiency of heat pump technology, resistive diverters like the Ohm Pilot and Catch Power also offer a number of benefits. For one, a resistive diverter enables you to treat your hot water storage tank like a battery by sending the surplus PV into the tank instead of the grid. This process enables you to make the most out of your PV system’s energy production.

To help you make an informed decision about choosing the right hot water system, watch this quick informative video about the difference between heat pumps and resistive storage.

If you want to learn more about the benefits of resistive diverters, you may get in touch with a specialist from KDEC by calling us at 02 6021 6033 or sending us an email at kdec@kdec.com.au.

Electric hot water unit vs Heat Pump

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As Albury Wodonga's leading solar experts, Kdec’s promise of quality service is guaranteed with our roster of trained and licensed Electricians. Whether you’re a commercial business, a new homeowner or looking to upgrade your family home, our 25 years of experience means you’re in safe hands.

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