Underfloor heating is an increasingly popular way to create comfortable, evenly heated indoor spaces while making efficient use of energy. Like any heating system, however, regular attention can help ensure that it continues to operate effectively for years to come.
Water-based underfloor heating systems use a network of pipes installed beneath the floor to circulate heated water and transfer warmth throughout a room. Afripex supplies PEX-A and PE-RT II piping solutions for water-based underfloor heating and cooling applications, including pipes with an oxygen barrier designed to help protect system components and support long-term performance.
While modern underfloor heating pipework can be designed for exceptional longevity, maintaining the components around the system is still important. Here are some practical ways to keep your underfloor heating system performing at its best.
1. Check the System Regularly
One of the simplest ways to maintain underfloor heating is to monitor how the system performs.
Pay attention to changes such as:
* Rooms taking longer than usual to warm up
* Uneven temperatures across the floor
* Unusual noises from the heating system
* Unexpected increases in energy consumption
* Pressure changes
* Visible signs of leakage around accessible components
A gradual change in performance can indicate an issue with the controls, circulation, manifold, boiler or heat source rather than the pipework itself.
Regular checks allow potential problems to be identified before they develop into more expensive repairs.
2. Keep the Manifold Accessible and Clean
The manifold is an important part of a water-based underfloor heating installation because it distributes heated water to the individual circuits.
Make sure the manifold area remains accessible. Avoid storing boxes, furniture or other items directly around it, as this can make inspection and servicing more difficult.
During routine inspections, look for visible signs of leakage, corrosion or damaged components. If you notice anything unusual, have the system inspected by a qualified heating professional.
3. Monitor Heating Performance in Each Room
One of the key advantages of underfloor heating is the ability to provide comfortable, evenly distributed radiant heat.
If one room is significantly colder than others, this may indicate an issue with a particular heating circuit, control setting, flow rate or balancing.
Do not immediately assume that the pipe beneath the floor has failed. Modern PEX-A systems are designed for durability and flexibility, and Afripex notes that its underfloor heating pipe systems are virtually kink-free, have low pressure loss and are designed to minimise leakage risks.
A qualified technician can check the system and determine the cause of uneven heating.
4. Check the System Pressure
For water-based underfloor heating, maintaining the correct system pressure is important for effective circulation.
The correct pressure depends on the design of the installation and the heating equipment used. Check the pressure gauge according to the manufacturer’s instructions and investigate any persistent or significant pressure loss.
A drop in pressure could indicate a leak or another issue within the heating system.
Because underfloor heating pipes are generally concealed beneath the floor, a professional should investigate unexplained pressure loss rather than simply repeatedly topping up the system.
5. Look After the Heat Source
The pipes beneath your floor are only one part of the overall heating system. The boiler, heat pump or other heat source also needs appropriate servicing.
A well-maintained heat source can help the system deliver the required water temperature efficiently.
Follow the manufacturer’s recommended servicing schedule for your boiler or heat pump and have maintenance carried out by an appropriately qualified professional.
This is particularly important if your underfloor heating is connected to a modern low-temperature heat source such as a heat pump.
6. Check Your Thermostats and Controls
Smart controls and thermostats play an important role in managing underfloor heating.
If a room is not reaching the desired temperature, check:
* The thermostat settings
* Heating schedules
* Room temperature sensors
* Batteries, where applicable
* Individual zone settings
* Connections to the heating control system
Avoid constantly changing the temperature to compensate for a system problem. Underfloor heating can respond more gradually than conventional radiators because heat is distributed through the floor structure.
Using appropriate schedules and temperature settings can help maintain comfort while avoiding unnecessary energy consumption.
7. Keep Floors Clear Where Appropriate
Underfloor heating works by transferring heat through the floor surface. Consequently, floor coverings and large items placed directly over heated areas can affect heat transfer.
Check that carpets, rugs and other floor coverings are compatible with your particular underfloor heating system.
When renovating or replacing flooring, always tell the flooring contractor that underfloor heating is installed.
This is especially important when installing materials with high thermal resistance, as they can reduce the amount of heat transferred into the room.
8. Be Careful When Carrying Out Renovations
One of the most important maintenance considerations is protecting concealed pipework.
If you plan to drill, screw, nail or otherwise penetrate the floor, establish where the underfloor heating circuits are located first.
Keep installation drawings and pipe layout information in a safe place. These records can be extremely useful when installing new flooring, cupboards, partitions or other fixtures.
If the pipe layout is unknown, speak to the original installer or a specialist before carrying out work that could damage concealed pipework.
9. Use Quality Pipework and Components
Long-term performance starts with the quality of the original installation.
Afripex supplies PEX-A and PE-RT II pipe systems for water-based underfloor heating and cooling. Its published specifications include oxygen-barrier pipe options, long coils designed to minimise joints and pipe sizes ranging from 16 to 110 mm.
Our pure PEX-A products have a design life of more than 100 years and are backed by a 15-year manufacturer warranty.
These specifications illustrate why selecting suitable materials and having the system correctly designed and installed are fundamental to long-term performance.
10. Protect Against Corrosion and System Contamination
Water quality and system design can influence the performance of heating equipment.
Oxygen-barrier pipework in water-based heating applications is very important. The oxygen barrier helps resist oxygen diffusion into the system, which can contribute to corrosion of ferrous components such as radiators.
Modern PEX-A pipework also offers advantages such as resistance to corrosion and scaling.
Nevertheless, the complete heating system should be maintained according to the specifications of the equipment manufacturers and the requirements of the original system design.
11. Don’t Ignore Unusual Noises or Temperatures
Underfloor heating should generally provide quiet, consistent operation.
If you notice unusual noises, persistent temperature fluctuations or areas of the floor that are unexpectedly cold or hot, arrange an inspection.
Possible causes can include:
* Air in the system
* Incorrect flow rates
* Control problems
* Pump issues
* Incorrect system balancing
* Heat-source problems
* Pressure issues
Professional diagnosis is preferable to adjusting components without knowing what is causing the problem.
12. Schedule Professional Servicing
Although modern underfloor heating pipework can require relatively little maintenance, the overall heating system should still be checked periodically.
Professional servicing can include inspection of:
* The heat source
* Pumps
* Manifold
* Valves
* Thermostats and controls
* System pressure
* Flow rates
* Heating circuits
* Accessible connections
The exact servicing requirements will depend on the type and design of the installation.
Afripex products are supported by training, technical assistance and system design resources, which can be particularly useful for installers and project professionals.
How Often Should Underfloor Heating Be Maintained?
There isn’t one universal maintenance schedule for every underfloor heating installation.
A sensible approach is to:
Regularly: Monitor temperatures, controls, pressure and general system performance.
Annually: Have the heating equipment and accessible components checked in accordance with the manufacturer’s recommendations.
Before winter: Test the system before you need maximum heating performance, giving you time to resolve any problems.
After renovations: Check that flooring work or other building alterations have not affected the system.
Always follow the maintenance instructions supplied with your specific heating equipment and installation.
What Are the Signs Your Underfloor Heating Needs Attention?
Watch for these warning signs:
Uneven heating
If some areas no longer heat properly, the system may need balancing or technical investigation.
Slow warm-up
A noticeable change in warm-up time can indicate a problem with controls, circulation or the heat source.
Pressure loss
Repeated pressure drops should be investigated rather than continually corrected.
Unusual sounds
New noises from pumps, valves or other components should not be ignored.
Higher energy bills
A significant increase in energy consumption without a corresponding change in usage may indicate reduced system efficiency.
Visible leaks
Any visible water around the manifold, boiler, pump or other accessible components requires attention.
Why Proper Installation Matters for Long-Term Performance
Maintenance cannot compensate for poor system design or installation.
Afripex’s underfloor heating solutions are designed around water-based heating and cooling applications, with features including long pipe coils to reduce the number of joints, low pressure loss and oxygen-barrier options.
Afripex also distributes Uponor’s Quick & Easy connection technology and provides training and technical support for its products.
Choosing appropriate materials and working with experienced installers can therefore have a significant impact on the reliability and service life of an underfloor heating installation.
Final Thoughts: Keep Your Underfloor Heating Working Efficiently
Underfloor heating can provide comfortable, energy-efficient heating with relatively low maintenance requirements when it has been correctly designed, installed and operated.
The most important maintenance steps are simple: monitor system performance, check accessible components, maintain the heat source, keep controls working correctly, protect concealed pipework during renovations and investigate unusual changes promptly.
Quality pipework is also an important part of long-term reliability. Afripex’s water-based underfloor heating solutions use PEX-A and PE-RT II options, including oxygen-barrier pipework, and are designed for durable, long-term applications.
About Afripex
Afripex has supplied piping solutions for drinking water, underfloor heating and industrial and residential temperature-transfer applications across Southern Africa since 1998. The company represents Uponor and provides products, technical support and training for a range of piping applications.
For more information about underfloor heating pipe systems, technical specifications and available solutions, Contact us at Afripex.