Flushing underfloor heating – everything you need to know
Lowest rates in the Netherlands - request a quote now!
Why does underfloor heating get dirty?
Underfloor heating is a closed system in which water circulates for years. This water carries small amounts of dirt, rust, and minerals with it.
Over time, this builds up in the pipes. The result: the underfloor heating heats up more slowly, the heat is distributed unevenly, or the system even stops working altogether.
Loan hoses: extra sensitive to contamination
Older systems with so-called loaner pipes have an even greater risk of contamination. These pipes are prone to sludge buildup and become clogged more quickly. The result: rooms stay cold, the central heating system works overtime, and energy costs rise. With this type of underfloor heating, we recommend flushing every four years .
Lime and hard water
In areas with hard water, limescale deposits form. The minerals adhere to the inside of pipes and components such as pumps and valves. This reduces heat transfer and can lead to malfunctions. Flushing with specialized products removes the limescale and restores flow.
Internal corrosion
Even modern pipes are not immune to corrosion. Loosened rust particles spread throughout the system and accumulate in bends or constrictions, creating a blockage in the flow. Regular flushing prevents this buildup from corroding the system.
Signs that your underfloor heating is clogged
-
The floor heats up unevenly
-
There are still cold spots in the house
-
It takes longer to reach the desired temperature
-
The central heating boiler or heat pump runs surprisingly often
-
The energy bill rises for no apparent reason
If you recognise one or more of these signals, there is a good chance that the underfloor heating is dirty and needs to be flushed urgently.
Consequences of a dirty underfloor heating system
A dirty system not only results in less comfort, but also in higher costs and faster wear.
-
Higher energy consumption – the installation has to work harder to achieve the same result.
-
Faster wear – pumps and valves fail sooner due to extra loading.
-
More expensive maintenance – breakdowns and repairs often cost much more than preventative flushing.
-
Short lifespan – a system that is never flushed will have a significantly shorter lifespan.
How often should you flush your underfloor heating?
-
For loan hoses : every 4 years
-
For modern systems : every 5 years
-
Direct : in case of blockage complaints or sharply rising energy costs
How does New Heating approach this?
At New Heating we specialize in the professional flushing of underfloor heating systems.
Step 1 – Inspection with thermal camera
We use a thermal imaging camera to map the flow of water. This allows us to pinpoint the problem areas without having to do any demolition work.
Step 2 – Professional rinsing
Using a flushing unit and pH-neutral cleaning agents, we remove dirt, sludge, and limescale. These agents are powerful, yet safe for the pipes.
Step 3 – Check with thermal camera
Afterward, we'll check again with the thermal imaging camera. This way, we can immediately demonstrate that the system is working cleanly and efficiently again.
Benefits of flushing underfloor heating at New Heating
✔ Even heat distribution
✔ Lower energy costs
✔ Less chance of malfunctions
✔ Extended lifespan of the installation
✔ Transparent working method with clear rates in advance
Cost of flushing underfloor heating
Flushing underfloor heating is an investment that quickly pays for itself. The exact price depends on the number of circuits and the level of contamination in the system. At New Heating, we work with clear and transparent rates, so you'll never encounter any surprises.
Practical example: underfloor heating completely clogged by sludge
A customer from 's-Hertogenbosch called us because the underfloor heating in their living room was barely producing any heat. The boiler was constantly running at high output, but the floor remained cold. Upon inspection with the thermal imaging camera, we discovered that several circuits were completely blocked. The cause: a thick layer of sludge in the pipes.
After a thorough rinse with professional cleaning agents, we saw immediate results. The thermal imaging camera showed that the heat was flowing evenly through the pipes again. Within an hour, the living room was at the right temperature, and the boiler could run much more smoothly. The customer's energy consumption dropped immediately, and they saved tens of euros on their energy bill in the first month.
Customer case: Tyleen hoses that no longer worked
Another example: a house in Rosmalen with old polyethylene pipes. The underfloor heating hadn't been maintained for years and no longer provided any heat. The residents thought the entire system needed replacing.
We measured the system, flushed the hoses, and checked them with the thermal imaging camera. The dirt and blockages were the culprits – after flushing, the system worked like new again. The residents were relieved that an expensive replacement wasn't necessary and that they could save their underfloor heating with a relatively small investment.
What equipment do we use?
At New Heating, we use advanced flushing units that pump water and cleaning agent through the pipes under high pressure. This method removes even stubborn sludge and limescale deposits.
We also use:
-
Thermal cameras to make the flow visible.
-
pH neutral cleaning agents that are safe for pipes and parts.
-
Special tools to remove air bubbles and small blockages.
This combination ensures that we deliver every installation, whether it concerns modern systems or older loan hoses, clean and in optimal working order.
Prevention is better than cure
Many people wait too long for maintenance, until complaints already arise. The downside of this is that the dirt has often accumulated to the point that the pump, valves, or even the boiler's heat exchanger have been damaged. In such cases, the costs are higher, and flushing alone isn't always enough.
By flushing preventively every 4 to 5 years:
-
Keep your energy costs low
-
Reduce the chance of malfunctions
-
Make sure the installation lasts for decades
-
Do you always have a home that heats up comfortably and quickly?
Why choose New Heating?
✔ Experience and specialization – we are involved in flushing underfloor heating every day
✔ Transparent prices – no hidden costs, always a clear quote in advance
✔ Unique working method – inspection and control with thermal camera
✔ Sustainable results – we extend the lifespan of your system
✔ Service in the region – we are quickly on site and always available for advice
Costs vs. savings
Many people wonder: “How much does it cost to flush underfloor heating?”
The answer: far less than the cost of wasted energy, expensive repairs, or a completely new system. An average flush pays for itself in a short time by:
-
Lower energy bills (10-20% savings are not uncommon)
-
Lower maintenance costs in the future
-
Longer lifespan of your installation
Frequently asked questions about flushing underfloor heating
How often should I flush my underfloor heating?
For older systems with loaner hoses, flushing is recommended every four years . For modern underfloor heating systems , once every five years is sufficient. If you notice problems sooner, such as cold spots, poor heat distribution, or higher energy consumption, it's wise to have a flush performed immediately.
How much does it cost to flush underfloor heating?
The price depends on the number of circuits in your system and the level of contamination. On average, flushing starts at a price that quickly pays for itself through lower energy costs and a longer system lifespan. At New Heating, we always work with clear and transparent rates , so you know exactly what to expect.
Can I flush underfloor heating myself?
In theory, there are DIY methods, but in practice, this is strongly discouraged. Without a professional flushing unit and cleaning agents, you'll only remove some of the dirt. Moreover, you risk damaging the pipes or manifold. Only with specialized equipment and expertise can the underfloor heating be truly cleaned thoroughly.
How do I know if my underfloor heating is clogged?
Signals include:
-
The floor remains unevenly warm.
-
It takes much longer to reach the desired temperature.
-
The energy bill is rising for no reason.
-
You hear the pump running much more often or louder.
-
There are parts of the floor that no longer get warm at all.
How long does it take to flush underfloor heating?
On average, a full flush takes several hours , depending on the size of the system. Afterward, the underfloor heating can be used again immediately, and you'll notice an almost immediate difference in heat distribution and efficiency.
Additional benefits of professional rinsing
Besides the direct benefits such as lower energy bills and greater comfort, regular flushing has even more advantages:
-
Healthier air quality – dirt and rust particles are no longer released into the air.
-
Optimal cooperation with central heating boiler or heat pump – the entire system works more efficiently.
-
Reduced risk of leaks – keeping pipes clean reduces pressure on vulnerable areas.
-
Future-proof – when switching to sustainable solutions such as a heat pump, a clean system is essential.
Why you shouldn't postpone this
Many people wait until their underfloor heating system actually causes problems. The downside is that the dirt has often accumulated to the point that pumps, valves, or heat exchangers are already damaged. In that case, the costs are higher, and flushing is sometimes insufficient. Preventative maintenance prevents high bills and keeps your system in top condition.
Why choose New Heating as a specialist?
At New Heating, we combine experience, knowledge, and the latest technologies. Every day, we see underfloor heating systems that haven't been maintained for years and know exactly how to get them functioning optimally again. Our process is transparent, sustainable, and results-oriented:
-
Inspection and diagnosis with thermal cameras
-
Rinse thoroughly with pH neutral agents
-
Check and prove a clean system after completion
-
Advice on maintenance and energy saving
This means you are assured of underfloor heating that will provide warmth for years to come without any problems.
Request a quote for more information or our prices!
-
flush underfloor heating
-
cleaning underfloor heating
-
underfloor heating flushing costs
-
underfloor heating blockage
-
underfloor heating no longer works
-
underfloor heating specialist
Sustainability and future-proof heating
At a time when energy prices continue to rise and more and more households are switching to sustainable solutions such as heat pumps, clean underfloor heating is more important than ever .
A dirty system will never achieve the maximum efficiency from a heat pump or high-efficiency boiler. Flushing ensures your system is ready for the future:
-
Lower energy bills due to higher efficiency
-
Sustainable operation because the installation is less loaded
-
Lower CO₂ emissions thanks to optimal energy use
Especially when switching to low-temperature heating, where underfloor heating is the primary distribution system, contamination can have significant consequences. Poor circulation simply means the heat pump can't do its job. By cleaning it regularly, you prevent your sustainable investment from failing.
New Heating as a partner in comfort and energy-efficient living
We understand that underfloor heating isn't just a luxury; it's the foundation of home comfort. With our specialized approach, we ensure customers not only enjoy warm floors but also achieve consistent energy savings. Every flush is an investment in comfort, sustainability, and reliability .
Whether it's a small apartment with a single underfloor heating circuit or a large multi-story house with dozens of circuits, we have the knowledge and equipment to thoroughly clean any system. We always provide honest advice about the system's condition and any future maintenance needs.
Flushing underfloor heating is essential to prevent problems like blockages, cold spots, and high energy bills. At New Heating, we specialize in cleaning, flushing, and maintaining underfloor heating systems. We use thermal imaging cameras, safe cleaning agents, and professional flushing equipment to get your underfloor heating working optimally again. Regularly flushing your underfloor heating saves money, extends its lifespan, and prevents malfunctions.
Flushing underfloor heating throughout the Netherlands
At New Heating, we're not just active in our own region; we serve customers throughout the Netherlands. Whether you live in a busy city or a rural area, we'll ensure your underfloor heating is functioning optimally again.
North Brabant
Many homes in North Brabant have underfloor heating as their primary heating system. We regularly perform flushing services in places like 's-Hertogenbosch, Tilburg, Eindhoven, Breda, Helmond, and Oss . We see a lot of older systems with loaner hoses here.
South Holland
In Rotterdam, The Hague, Dordrecht, Leiden, and Zoetermeer, we often encounter systems that haven't been maintained for years. The result: high energy bills and cold spots in the home. With our thermal imaging cameras and flushing technology, we restore these systems to peak condition.
North Holland
In the Randstad, including Amsterdam, Haarlem, Alkmaar, and Hilversum , we're seeing many households switching to heat pumps. Clean underfloor heating is crucial here to maximize the heat pump's efficiency.
Utrecht
Underfloor heating is popular in new-build homes in Utrecht, Amersfoort, Nieuwegein, and Zeist . Here too, flushing every five years prevents relatively new systems from quickly developing problems.
Gelderland
We regularly operate in regions like Arnhem, Nijmegen, Apeldoorn, and Ede . Large homes with multiple underfloor heating circuits, in particular, benefit enormously from professional flushing.
Overijssel
In cities like Zwolle, Enschede, and Deventer, we often see hard water quality, which causes limescale deposits to form more quickly. Our cleaning system completely eliminates this problem.
Friesland, Groningen and Drenthe
We also carry out flushing services in the north of the country, in places like Leeuwarden, Groningen, Assen, and Emmen . Especially in older homes, residents often don't notice their underfloor heating is dirty until later.
Limburg
In Maastricht, Heerlen, Sittard, and Venlo, underfloor heating systems are often used intensively as the primary heating source. Regular flushing prevents high energy costs and extends the system's lifespan.
Zeeland & Flevoland
We also operate in Middelburg, Vlissingen, Goes, Almere, and Lelystad . Especially in new residential areas, we recommend scheduling maintenance appointments right away to ensure the system stays clean and efficient from the start.
National coverage, local service
Wherever you live – from Amsterdam to Maastricht, from Groningen to Eindhoven – we're ready to professionally flush your underfloor heating. Thanks to our nationwide coverage and specialized equipment, we can provide service anywhere in the Netherlands.
Flushing underfloor heating in North Holland
We operate throughout North Holland, from the capital Amsterdam to the coastal towns of Zandvoort, Bloemendaal, and Egmond aan Zee . We also regularly carry out flushing services in Haarlem, Alkmaar, Hoorn, Purmerend, Hilversum, and Amstelveen . Further north, we operate in Den Helder, Schagen, Heerhugowaard, Medemblik, and Enkhuizen , while in the Gooi region, we serve customers in Naarden, Bussum, Laren, and Huizen . We also provide clean and efficient underfloor heating systems in Zaandam, Wormerveer, Krommenie, Castricum, Heiloo, Volendam, and Monnickendam .
Flushing underfloor heating in South Holland
In South Holland, we flush underfloor heating systems in the major cities of Rotterdam, The Hague, Leiden, and Dordrecht , as well as in medium-sized municipalities such as Zoetermeer, Delft, Gouda, Schiedam, Vlaardingen, Capelle aan den IJssel, Spijkenisse, and Alphen aan den Rijn . Along the coast, we serve Katwijk, Noordwijk, Scheveningen, and Wassenaar , while in the Rijnmond region, we serve customers in Ridderkerk, Barendrecht, Rijswijk, Hellevoetsluis, Maassluis, and Naaldwijk . We also operate in Gorinchem, Sliedrecht, Papendrecht, and Leerdam .
Flushing underfloor heating in Utrecht
In the province of Utrecht, we flush underfloor heating systems in Utrecht city, Amersfoort, Nieuwegein, Zeist, and Veenendaal . We also serve smaller municipalities such as Houten, IJsselstein, Woerden, De Bilt, Baarn, Soest, Leusden, Bunschoten-Spakenburg, Wijk bij Duurstede, and Montfoort . We also operate in villages such as Driebergen, Bilthoven, Maarssen, Breukelen, and Odijk .
Flushing underfloor heating in North Brabant
In North Brabant, we have many clients in the major cities of Eindhoven, Tilburg, Breda, and 's-Hertogenbosch , as well as in Helmond, Roosendaal, Oss, Bergen op Zoom, Oosterhout, Waalwijk, and Etten-Leur . We also serve places like Veghel, Uden, Boxtel, Schijndel, Sint-Michielsgestel, Veldhoven, Best, Geldrop, Valkenswaard, Heesch, and Son en Breugel . In West Brabant, we operate in Steenbergen, Halsteren, Rucphen, and Zevenbergen . And, of course, Kaatsheuvel too!
Flushing underfloor heating in Gelderland
In Gelderland, we flush underfloor heating systems in Arnhem, Nijmegen, Apeldoorn, Ede, and Wageningen , as well as in Zutphen, Doetinchem, Harderwijk, Barneveld, Tiel, Culemborg, Zaltbommel, Zevenaar, and Elst . We also serve villages such as Putten, Ermelo, Nunspeet, Beuningen, Druten, Lochem, and Winterswijk . We also operate in the Veluwezoom region, in towns like Eerbeek, Brummen, and Rheden .
Flushing underfloor heating in Limburg
In Limburg, we operate in Maastricht, Heerlen, Sittard, Geleen, Venlo, Roermond, Weert, Kerkrade, Venray, and Landgraaf . We also serve clients in Brunssum, Stein, Echt-Susteren, Valkenburg, Horst, Gennep, Meerssen, and Voerendaal . The border region with Germany and Belgium also falls within our service area.
Flushing underfloor heating in Overijssel
In Overijssel, we flush underfloor heating systems in Zwolle, Deventer, Enschede, Hengelo, and Almelo . We also regularly visit Kampen, Oldenzaal, Hardenberg, Raalte, Ommen, Steenwijk, Nijverdal, Rijssen, and Haaksbergen . We also perform flushing services in smaller towns like Genemuiden, Vroomshoop, Dalfsen, and Den Ham .
Flushing underfloor heating in Friesland
In Friesland, we serve customers in Leeuwarden, Drachten, Heerenveen, Sneek, and Harlingen , as well as Franeker, Joure, Bolsward, Dokkum, Workum, Grou, Lemmer, Kollum, and Stiens . We even operate in the smaller villages around the lakes.
Flushing underfloor heating in Groningen
In the province of Groningen, we operate in the city of Groningen , as well as in Delfzijl, Hoogezand-Sappemeer, Veendam, Winschoten, Stadskanaal, Haren, Leek, Zuidhorn, Appingedam, and Bedum . We also regularly visit the Westerkwartier region.
Flushing underfloor heating in Drenthe
In Drenthe, we flush underfloor heating systems in Assen, Emmen, Hoogeveen, Meppel, and Coevorden . We also serve Roden, Beilen, Borger, Zuidlaren, Gieten, Schoonebeek, and Hoogeveen-Noord .
Flushing underfloor heating in Zeeland
In Zeeland, we operate in Middelburg, Vlissingen, Goes, Zierikzee, Terneuzen, and Hulst . We also carry out flushing services in villages such as Kapelle, Yerseke, Oostburg, and Domburg .
Flushing underfloor heating in Flevoland
In Flevoland, we flush underfloor heating systems in Almere, Lelystad, Dronten, Emmeloord, and Zeewolde . We also regularly visit Urk, Biddinghuizen, and Swifterbant .
Eindhoven, Tilburg, Breda, 's-Hertogenbosch, Helmond, Oss, Roosendaal, Bergen op Zoom, Oosterhout, Waalwijk, Uden, Veghel, Etten-Leur, Boxtel, Veldhoven, Best, Geldrop, Valkenswaard, Son en Breugel, Heesch, Schijndel, Sint-Michielsgestel, Goirle, Dongen, Drunen, Heusden, Hilvarenbeek, Oirschot, Nuenen, Steenbergen, Halsteren, Zevenbergen, Moerdijk, Klundert, Rucphen, Sprundel, Zundert, Baarle-Nassau, Chaam, Alphen, Gilze, Rijen, Made, Raamsdonksveer, Geertruidenberg, Hank, Sleeuwijk, Werkendam, Woudrichem, Heeze, Leende, Asten, Someren, Deurne, Lierop, Mierlo, Bakel, Gemert, Beek en Donk, Lieshout, Aarle-Rixtel, Helvoirt, Cromvoirt, Vught, Rosmalen, Nuland, Empel, Engelen, Sint-Oedenrode, Liempde, Veghel, Erp, Boekel, Volkel, Udenhout, Berkel-Enschot, Haaren, Esch, Kaatsheuvel, Loon op Zand, Sprang-Capelle, Waspik, Wijk en Aalburg, Andel, Veen, Drongelen, Meeuwen, Aalburg, Nieuwendijk, Sleeuwijk, Hank, Dussen, Dinteloord, Fijnaart, Willemstad, Oudenbosch, Hoeven, Stampersgat, Bosschenhoofd, Zegge, Oud Gastel, Kruisland, Roosendaal, Nispen, Wouw, Wouwse Plantage, Heerle, Moerstraten, Halsteren, Lepelstraat, Tholen (border area), Budel, Budel-Schoot, Budel-Dorplein, Maarheeze, Cranendonck, Soerendonk, Sterksel, : Aarle-Rixtel, Beek and Donk, Mariahout, Lieshout, Asten-Heusden, Ommel, Bakel, Milheeze, De Mortel, Elsendorp, Boxmeer (border North Brabant), Cuijk, Grave, Mill, Sint Hubert, Langenboom, Wanroij, Velp (North East), Reek, Schaijk, Zeeland (North East), Uden, Odiliapeel, Volkel, Overloon, Vierlingsbeek, Vortum-Mullem, Groeningen, Holthees, Sambeek, Sint Anthonis, Oploo, Westerbeek, Stevensbeek, Beugen, Haps, Wanroij, Rijkevoort, Katwijk (North East), Haps, Gassel, Linden, Mill and St. Hubert, Heesch, Nistelrode, Vorstenbosch, Loosbroek, Dinther, Heeswijk, Berghem, Herpen, Ravenstein, Demen, Dieden, Keent, Neerlangel, Velp (North East), Macharen, Megen, Lith, Lithoijen, (border area).
Aarle-Rixtel, Achtmaal, Alphen, Andel, Asten, Baarle-Nassau, Bakel, Beek en Donk, Bergeijk, Bergen op Zoom, Berkel-Enschot, Bernheze, Best, Bladel, Boekel, Boxmeer, Boxtel, Breda, Budel, Budel-Dorplein, Budel-Schoot, Chaam, Cranendonck, Cromvoirt, Cuijk, De Mortel, Deurne, Diessen, Dinteloord, Dongen, Drimmelen, Drunen, Dussen, Eersel, Eethen, Effen, Eijsden, Empel, Engelen, Esbeek, Esch, Etten-Leur, Fijnaart, Galder, Geldrop, Gemert, Gilze, Goirle, Grave, Haaren, Haghorst, Halsteren, Hapert, Heeze, Heesch, Heeswijk-Dinther, Helmond, Helvoirt, Herpen, Hilvarenbeek, Hoeven, Hooge Mierde, Hooge Swallow, Hoogerheide, Hoogeloon, Horst, Hulten, Hulsel, Huijbergen, Kaathoven, Kaatsheuvel, Katwijk (NB), Klundert, Koewacht, Knegsel, Lage Mierde, Lage Zwaluwe, Langenboom, Ledeacker, Leende, Lieshout, Lith, Lithoijen, Liempde, Lierop, Loon op Zand, Loosbroek, Maarheeze, Made, Maren-Kessel, Mariahout, Megen, Middelbeers, Mill, Moerdijk, Moergestel, Molenhoek (NB), Mook, Netersel, Neerlangel, Netersel, Nieuwendijk, Nispen, Nistelrode, Nuenen, Nuland, Odiliapeel, Oeffelt, Oirschot, Oisterwijk, Ommel, Oss, Oud Gastel, Oudheusden, Overloon, Poederoijen, Prinsenbeek, Putte, Raamsdonk, Raamsdonksveer, Ravenstein, Reek, Reusel, Riethoven, Rijen, Rijsbergen, Rijswijk (North East), Roosendaal, Rosmalen, Rossum, Rucphen, Sambeek, Schaijk, Schijndel, Schorsbos, Sint Anthonis, Sint Hubert, Sint-Michielsgestel, Sint-Oedenrode, Someren, Son en Breugel, Soerendonk, Sprang-Capelle, Sprundel, St. Willebrord, Standdaarbuiten, Steenbergen, Stevensbeek, Strijbeek, Stiphout, Teteringen, Tilburg, Ulvenhout, Uden, Udenhout, Valkenswaard, Veldhoven, Velp (North East), Veen, Veghel, Veldhoven, Vianen (North East), Vierlingsbeek, Vinkel, Vlijmen, Volkel, Vortum-Mullem, Vught, Waalre, Waalwijk, Wanroij, Waspik, Werkendam, Westerbeek, Wintelre, Wijk en Aalburg, Willemstad, Woensdrecht, Woudrichem, Wouw, Wouwse Plantage, Zeelst, Zevenbergen, Zeeland, Zevenbergschen Hoek, Zundert.
