Heat Pump Maintenance

inspecting heat pump water heating and maintenance

Heat Pump Maintenance in South Africa: A Homeowner’s Guide

Heat pumps are an energy-efficient way to heat water, often replacing traditional geysers or being employed as hybrid electric water heaters. In South Africa, they’re commonly used not only for household water heating but also for warming swimming pools, making them a versatile and eco-friendly solution, especially in South Africa’s varied climate. Whether you’re in Gauteng’s highveld or the coastal humidity of Durban, regular maintenance is key to ensuring your heat pump runs efficiently and lasts for years. Here’s what to inspect to keep yours in top shape.

🌡️ Clean the Air Filters and Coils

Dust, pollen, and debris can clog your heat pump’s air filters and coils, reducing efficiency and airflow. Clean or replace filters every 1–3 months, especially in areas with high dust levels or during high pollen seasons. Use a soft brush or vacuum to clean the coils and remove any buildup gently.

💧 Check for Leaks and Insulate Pipes on the Heat Pump

Inspect the refrigerant lines and water pipes for any signs of leaks or corrosion. Keep pipes properly insulated to prevent freezing during the winter months. This is especially important in colder regions such as the Drakensberg and the Free State, or where temperatures get to 3˚C or below. Leaks not only reduce efficiency but can also damage the unit over time.

🔌 Inspect Electrical Components

Turn off the power and check all electrical connections for signs of wear, corrosion, or loose wires. Faulty connections can lead to system failure or even pose a fire risk. If you’re unsure, it’s best to call a qualified technician to inspect the heat pump.

🌀 Clear the Surrounding Area around the Heat Pump

Ensure that the outdoor unit has at least the clearances shown in the diagram below on all sides. Remove leaves, grass, and debris that may obstruct airflow. Trim back any vegetation that could interfere with the unit’s operation.

heat pump maintenance - inspect you water heating

📅 Schedule Annual Professional Servicing

Even with regular DIY maintenance, it’s wise to have your heat pump professionally serviced at least once a year. A technician can check refrigerant levels, test system controls, and ensure optimal performance, especially before the peak summer or winter seasons.


By following these simple steps, South African homeowners can enjoy reliable, energy-efficient water heating all year round. Whether your heat pump supports your home’s hot water needs, warms your swimming pool, or replaces a conventional geyser, regular maintenance ensures it performs efficiently across all applications. A well-maintained heat pump not only saves money on electricity but also contributes to a more sustainable home.

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THE HOME DETECTIVE » Homeowner » Geyser

Section Title Schemes

Responsibilities of Owners and Body Corporates

Body corporates

I do a fair amount of inspections in sectional title schemes. Often, owners ask me if body corporates will pay for repairs inside their units. Obviously, their concern is about damage caused by external factors such as rainstorms, burst geysers, and so on.

Each case is usually based on its merits. Usually, the trustees use their discretion in deciding how to allocate repair and replacement costs. However, there are many grey areas and differences between the owner’s and body corporate’s responsibilities and liabilities.

The Body Corporate’s obligations

Body corporates are responsible for the repairs, maintenance, and upkeep of the common properties.

Furthermore, the body corporate maintains all pipes, ducts, wiring, etc., for the common property and services to more than one unit.

Your obligations as an owner of a section

You must maintain your particular section. Moreover, you must also keep any part of the common property to which you have the right neat and tidy. These are exclusive-use areas such as gardens, patios, balconies, and parking areas.

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Geysers

geysers

The TPR Valve and Dangerous Geyser Installations

geysers and hot water heaters
During inspections, I found that approximately 40% of the installations of water heaters (geysers) do not comply with the SANS 10254 specification. In addition, of that 10% were dangerous!

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High-pressure geysers

Most modern geysers in South Africa are high-pressure hot water heaters.

Never work on geysers yourself unless you are a licenced plumber and you know what you are doing! They are high-pressure vessels and can explode.

Home inspectors report that the most common defect in South African homes is an incorrectly installed geyser. Notably, this defect is potentially dangerous and is mainly a result of untrained, or unsupervised workers installing hot water heating systems.

Exploding geysers kill people in South Africa every year.

Temperature and pressure release valves

All high-pressure water heaters must have a temperature and pressure release valve (TPR valve). This valve controls two critical functions: pressure and temperature. Therefore, do not tamper with this valve!

If the thermostat fails and the temperature rises beyond 70°C, pressure increases. In this case, with the rising temperature, the TPR valve on the geysers will be released if it is working correctly. Moreover, this happens either because of excessive heat or pressure.

If the TPR valves are faulty, the boiling point of water can rise above 120°C! The pressure will reach a point where the geysers’ pressure tanks rupture. At this point, the water turns into steam instantly. As a result, the 150-litre water in your geyser will now occupy 240,000 litres of space! This results in an explosion of the ferocity of a half kilogram of dynamite ( approximately 2½ sticks). Not only will the damage be excessive, but, as a consequence, lives can be at risk.

Defective installations

In my experience, about 4 in every 10 geysers have not been installed correctly, therefore, it is a good idea to have yours inspected!

Also, during periods of water cutoffs, do not use hot water or open hot water taps! You will burn out the element!

Ensure that a home inspector or plumber inspects your geyser installation!

These videos show extreme cases of hot water heater explosions:

Also, read the following: Geyser Explosion – Kimberley and a Geyser explosion survivor has lost everything.

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THE HOME DETECTIVE » Homeowner » Geyser

Your Hot Water Geyser can EXPLODE!

Your hot water geyser can explode!

hot water geyser
Approximately 40% of the installations of water heaters or hot water geysers do not comply with the SANS 10254 specification.
 
This article intends to inform you, in the interests of your and your family’s safety, what you should and should not see if you happen to stick your head into the ceiling space to check out your hot water geyser. If your geyser installation is significantly different from what is described here, get a reputable plumber to repair it. Check out the videos at the bottom of this article!
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