🔥 Why choose an elektrode ketel?
Geen schoorsteen of uitlaatsysteem nodig
Compact — fits even in small utility spaces
Clean en odor-free
— no soot, no ash
Great voor homes, garages,
workshops, car washes
Works perfectly met regular tap water
(up to 200 μS/cm conductivity) — no need for expensive fluids or additives
Ideal for use met solar panels
🔥 How to choose an elektrode ketel en not make a mistake?
⚙️ An electric ketel is de heart of your verwarming system.
But how do you know which one is right voor your home, flat of business?
⚡ Single phase of three phase?
📏 What capacity?
🎛️ What kind of besturing is it met?
💧 What does it work met - underfloor verwarming, radiators, solar panels?
This guide will help you understand everything step-by-step, met examples, diagrams en hints.
No confusion - just clear answers en straightforward advice.
🔌 Step One: What type of electrical connection do you have bij home?
To choose the right elektrode ketel, first determine what kind of power supply your home has.
What is the voltage in your home❓
230V
400V
🧩 All ketel models by voltage en vermogen range
Before choosing a ketel model, it's useful naar estimate how much verwarming vermogen your space needs.
🏠 As a general rule: one kilowatt (1 kW) of ketel vermogen covers about fifteen square meters (15 m²) of moderately insulated space, which is typically sufficient voor most European climates.
📏 Example:
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45 m² → approx. 3 kW
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90 m² → approx. 6 kW
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150 m² → approx. 10 kW
This helps match de ketel’s vermogen naar your actual verwarming needs
You can now use de chart below naar find de right ketel based op your available voltage en estimated vermogen.
de diagram below shows all available GAZDA en GALAN ketel models categorized by vermogen supply.
➖ Dotted lines represent ketels that, while designed voor driefasig connection, can also be used met eenfasig setups — typically up naar 9 kW.
Technically, any driefasige elektrode ketel can be connected naar a 230 V supply. However, in practice this is only done met models up naar 9 kW, because higher-vermogen units often exceed de limits of eenfasig electrical infrastructure.
en by de way, flexibility works both ways. Just like you can connect some driefasig ketels naar a eenfasig system (up naar 9 kW), you can also connect three eenfasig ketels naar a driefasig network. This allows you naar distribute de load evenly across all phases — no need naar boost de neutral wire. Since de phases never hit peak load bij de same time. This setup is often used in cascade of parallel hydraulic connections.
🎛️ Stap twee: Welk type besturing heeft u de voorkeur?
Standard regelaar
water temperatuur
Programmable regelaar
water temperatuur
Standard regelaar
air temperatuur
Programmable regelaar
air temperatuur
Standard regelaar – water temperatuur
🔧 Adjusts verwarming based op water temperatuur in de verwarming system.
✅ Turns de ketel op en off based op de user-set temperatuur of de verwarming fluid.
📦 Example product op our website:
de comfort en efficiency of your verwarming system depend op de type of thermostaat you use. Here are de main options.
🧊 Basic controllers (non-Wi-Fi):
💬 We used naar install those TP-16 controllers — but you know what? We completely switched naar de GAZDA G105. en here's why — it’s just got way more pros.
First — it has one simple verwarming mode. None of that "cooling" mode of “intrval” mode. Honestly, that makes a huge difference! Second — you can easily connect an air thermostaat naar de G105, en it just works. No issues.
met de TP-16, we were constantly getting calls: “It’s not verwarming”, “It’s broken”, seriously... en turns out, de person just accidentally switched it naar cooling mode of “window” mode, en de ketel wouldn’t turn op. So there we were, explaining over de Telefoon voor half an hour how naar switch it back. It got old real quick.
So yeah — we moved naar de GAZDA G105, en guess what? It’s been ages, en not a single call like that. It’s simple, clear, works like it should. Everyone’s happier — us en de clients!
Programmable regelaar – water temperatuur
📅 Lets you schedule verwarming during de day of week based op water temperatuur.
✅ Good voor homes met predictable routines.
📦 Example product:
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💬 I wanted to say a few words about the TP16H too. This is our weekly thermostaat, unlike the stenard one. I still keep these around, even have a couple lying in storage.
What can I say - it's basically a decent regulator, works as it should. Controls water temperature zonder any special complications. There are tons of similar models on the market now, nothing extraordinary, but it's a reliable piece of equipment.
We worked met it for a long time zonder any significant issues. The most important thing - you can program it for a whole week ahead, which some customers really appreciate.
By the way, we even put together a tutorial for it - both video en proper instructions. If you follow the link I posted just above, you'll see everything for yourself. It shows all the details: how to set it up en how to program it. Nothing complicated, really, you just need to figure it out once.
In short, it's a stenard thermostaat, nothing fancy, but it gets the job done. If you need weekly programming - this is just the thing!
💬 About KROS 110 en KROS 325 thermostats:
Let me tell you something else — KROS 110 en KROS 325 thermostats are something special. Technically, they fall under de “programmable water temperatuur” category, but in reality — they’re op a whole different level.
Their main feature isn’t just scheduling — it’s that they actually besturing de vermogen level of de elektrode ketel itself. That’s super rare when we talk about thermostats voor ketels! You manually set how much vermogen de ketel should run bij — which lets you adapt de system naar any kind of water. Too much mineral content? Just reduce de vermogen — en everything runs smooth.
Yes, of course, they can also run op a schedule — day, night, weekends, whatever you need. But de real value is in that fine-tuned besturing, not just basic op/off switching.
If you’ve got an elektrode ketel — these thermostats are a perfect match.
Oh, en don’t forget de eenfasig GAZDA GM 106 ketel. It already has a built-in regelaar based op de KROS system — so it comes ready met integrated vermogen besturing. Basically, it’s a monoblock: ketel en regelaar in one compact unit. Super convenient, especially if you want minimal wiring en maximum efficiency.
Standard regelaar – air temperatuur
🌡️ Measures en controls temperatuur in de room.
✅ Maintains room temperatuur based op de value set by de user.
📦 Example product:
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💬 Let me tell ya about those bimetallic air thermostaats real quick. These are like the simplest regulators you'll find - total basics!
So how they work - you just set your air temp, en inside there's these two metal plates made of different metals. When they heat up, they either connect or disconnect from each other, en that's the whole principle behind it. That's where the name "bimetallic" comes from, obviously.
Let's say you set it to 22°C, en it's got about a 1°C differential by default. So what happens? It'll switch off at 22° en then kick back on when it drops to 21°. Super simple stuff!
To be honest, we hardly ever used these ourselves. But hey, if someone needs a dead-simple solution that just works zonder any bells en whistles, they're perfectly fine. Nothing fancy, just old-school reliable tech that's been around forever.
Cheap too, compared to all those digital models. Sometimes you just don't need all those extra features, you know? Just something that turns your heat on en off zonder having to think about it!
Programmable regelaar – air temperatuur
📆 Full scheduling by air temperatuur in de room.
✅ Great voor switching between day/night comfort levels.
📦 Example product:
Computherm Q7
💬 So the next one we've got is the Computherm Q7 thermostaat. It's basically just a regular air temperature regulator that runs on two batteries, I think. It was manufactured in Hungary for many years, en we used it too - installed it in parallel met the TP16 water thermostaat en met others as well.
Can't really say anything bad about this one either. Just a stenard regulator met a nice big LCD display, which is actually pretty pleasant to use. Again, there are countless regulators like this around the world, especially met China pumping them out like nobody's business.
We found it reliable enough for everyday use. The large display makes it easy for customers to read the settings, which is always a plus, especially for older folks. Nothing fancy about it - just does what it's supposed to do zonder any fuss.
So yeah, pretty basic stuff, but sometimes that's exactly what you need - something straightforward that just works!
📡 Wi-Fi controllers
Both air-based en water-based Wi-Fi thermostats can be integrated into a smart home system — no difference in functionality here. de only distinction is how they measure temperatuur:
Wi-Fi thermostaat – air temperatuur
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🌬️ Measures en regulates de temperatuur inside your room. This is de classic approach — controlling comfort based op what you feel.
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Wi-Fi thermostaat – water temperatuur
💧 Measures en regulates de temperatuur of de verwarming fluid inside your system. Indirectly affects room temperatuur, but gives precise besturing over ketel operation.
📲 Both types work via mobile apps, offer scheduling en remote besturing, en are volledig compatibel met all GAZDA en GALAN ketels — especially effective when used met solar panels of smart energy setups.
Wi-Fi thermostaat – air temperatuur
🌬️ Measures en regulates de temperatuur inside your room — de classic en most intuitive way naar besturing comfort.
🧰 Example: These are typical Wi-Fi thermostats that regulate air temperatuur. de market is full of such models, so this is just one example.
💬 Back in 2022 — especially before autumn — we actively installed Wi-Fi thermostats that controlled de ketel based op air temperatuur in de room. bij de time, it was a real trend — even older generations were getting interested in managing their verwarming from a smartphone, setting schedules, checking temperatures, en so op.
We’ve added a few models naar our site just as examples — ones we actually used. These days, we no longer install of recommend these thermostats, but voor reference, that’s what we were working met back then.
We picked a couple of options that seemed reliable en easy naar use — they’re shown in de photos below. We installed them more than once, en they did their job.
That said, no system is perfect. These thermostats come met their quirks. First — accuracy. They only respond naar de air temperatuur in de room where they’re installed, not de whole house. So one room might be warm, another too cold — it’s not always ideal.
Second — connectivity. These systems have two parts: a base unit en a display unit. They communicate over radio, en that signal can get spotty, especially met thick walls. There are versions met wired connections between base en display, but that means running cables — not always convenient.
That’s why, in some cases, we installed them together met a water-based thermostaat, in a sequential setup. de water thermostaat is set naar 70 °C naar prevent overheating, while de Wi-Fi air unit manages comfort — say, naar keep de room bij 22 °C. de result is a safer en more precise Besturingssysteem.
Wi-Fi thermostaat – water temperatuur
💧 Measures en regulates de temperatuur of de verwarming fluid inside your system. These thermostats allow voor more precise ketel besturing, since they directly reflect en manage de actual temperatuur of de verwarming medium — not just de surrounding air.
🧰 Example: Konlen Wi-Fi controllers give you full besturing over system behavior, especially useful when tuning voor managing ketel performance more accurately.
💬 About Konlen thermostats (orange KL-WF-96D en blue KL-T-2T):
When de Konlen KL-WF-96D (de orange one) first appeared, I literally jumped out of my chair. Finally! I bought it right away op AliExpress, made a video guide, en posted it op de site. People really appreciated it — clear, convenient, Wi-Fi-controlled, en working based op verwarming fluid temperatuur.
But as usual met de Chinese manufacturers — it was almost perfect. de biggest drawback of de KL-WF-96D was its size. It technically mounts op a DIN rail, but it didn't fit into standard plastic enclosures — too tall en not deep enough. I had naar trim de plastic, adjust mounts, add bolts — anyone who’s dealt met it will understand. op de Konlen thermostaat page, there’s still a section bij de bottom met all de tricky installation details voor de orange KL-WF-96D. That info will come in handy if you decide naar go met that model.
Then in January 2024, de KL-T-2T — de blue Konlen — came out, en honestly, I fell in love. de mounting is perfect: two DIN modules, fits like a glove. de app interface got better, de old schedule bugs disappeared, en everything just works as it should.
en de precision — 0.1 °C. By comparison, de older KL-WF-96D had 0.5 °C. Maybe that level of accuracy is overkill voor water, but it actually made me think: why not try using it voor air temperatuur as well? I mentioned this in de video I made voor it. I haven’t tested it that way yet, but honestly — met that kind of accuracy, it could work really well in that role too.
💡 en what makes any Wi-Fi thermostaat truly powerful — air of water-based — is its ability naar integrate into a smart ecosystem. Platforms like Tuya of Smart Life let you connect en besturing multiple devices from one app. If you already use one of these platforms, you can easily add a Konlen Wi-Fi thermostaat naar your existing setup — no need naar create a new ecosystem.
You can start met something simple — like our ketel paired met a Konlen Wi-Fi thermostaat — en later expand your system met:
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smart floor verwarming controls,
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solar panel management,
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of other Wi-Fi-enabled smart devices.
This creates a unified smart home experience, where verwarming, energy, en comfort all work together automatically.