Electrobock vs. SALUS – comparison of programmable heads

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Elektrobock vs. SALUS – comprehensive comparison of programmable thermostatic heads

When a customer enters a store with the question "which programmable head should I buy," they are usually faced with a choice between several brands. On the Slovak and Czech markets, two brands dominate in particular – Elektrobock and SALUS Controls. Both have their loyal user communities, both manufacturers have many years of experience with control technology, and both ranges cover the typical needs of households. Despite this, they differ significantly in concept, operation, temperature measurement accuracy, programming options, and in practice during everyday use.

This article is intended for those who want to make a real decision based on technical facts – not just marketing claims. We will examine each aspect of both brands, compare specific models, show when it makes sense to choose one or the other, and add practical experience from customer practice. If you are still considering whether you need a programmable head at all, you can also read the article Programmable vs. manual thermostatic head – which one is worth it, where this question is discussed from the basics.

Who is Elektrobock and who is SALUS – a brief profile of the manufacturers

Elektrobock CZ is a Czech company based in Zlín, originally focused on consumer electronics and control technology for households. Programmable heads are a relatively new product segment for them, but the company has quickly built a good reputation thanks to affordable prices, simple operation, and the availability of spare parts and service on the Czech and Slovak markets. Their range of heads is compact – a few models with different levels of features.

SALUS Controls is a British manufacturer (Computime Group) with production in China and extensive distribution throughout Europe. SALUS has a longer history in the field of thermostats and intelligent controls – their product portfolio is much broader, from basic manual heads through programmable to Wi-Fi and ZigBee models for smart home systems. On the Slovak market, SALUS heads are perceived as a slightly premium segment compared to Elektrobock.

This practically means: Elektrobock is typically the choice for those who want reliable, simple, and affordable solutions with minimal complications. SALUS appeals to those who want more features, more precise control, or possible integration into a smart home system.

Overview of compared models

For a specific comparison, we will look at three Elektrobock models and two SALUS models available on the Slovak market:

Elektrobock HD10 – basic programmable model with an LCD display
Elektrobock HD20 – extended version with more programming options
Elektrobock EMF-1 – model with an external temperature sensor
SALUS PH 55 – mid-range programmable head
SALUS PH 60 – premium programmable head with advanced features

Technical parameters – the numbers that decide

Before we get into the detailed comparison, let's summarize the key technical parameters. In practice, it is precisely these numbers that decide how the head will behave in daily operation.

Parameter	HD10	HD20	EMF-1	PH 55	PH 60
Thread	M30×1,5	M30×1,5	M30×1,5	M30×1,5	M30×1,5
Temperature range	5 – 30 °C	5 – 30 °C	5 – 30 °C	5 – 30 °C	5 – 30 °C
Measurement accuracy	±1 °C	±1 °C	±0,5 °C	±0,5 °C	±0,5 °C
Programming	6+1 / day	6+1 / every day	6+1 / every day	6 / every day	6 / every day
External sensor	No	No	Yes	No	No
Power supply	2× AA	2× AA	2× AA	2× AA	2× AA
Battery life	approx. 1.5–2 years	approx. 1.5–2 years	approx. 1.5 years	approx. 2 years	approx. 2 years
Window detection	No	Yes	Yes	Yes	Yes
Frost protection	Yes (5 °C)	Yes (5 °C)	Yes (5 °C)	Yes (5 °C)	Yes (5 °C)

From the table we see that at first glance the differences are minimal – all models share the same M30×1.5 thread, the same temperature range and the same power supply type. The devil is in the details, especially in the programming method, regulation algorithms and real behavior during operation. For more on the correct thread and adapters, you can read the article What thread does a programmable head need – M30×1.5 and adapters.

Elektrobock HD10 – basic, but functional option

HD10 is the entry-level model of Elektrobock. It has a simple LCD display, three buttons and a control logic that even a less technically skilled user can set up. Programming is done directly on the device – you set 6 time segments for the workday and separately for the weekend (in 5+2 mode). Temperature is set in 0.5 °C steps.

In practice, I have seen HD10 mainly used in apartments where regulation was not used before – where old manual thermostatic heads were standing and people simply wanted automation without unnecessary electronics. HD10 works reliably in such cases, without failures and with minimal service requirements. One of the disadvantages is the lack of window opening detection function (open window detection), which during intensive winter ventilation leads to unnecessary heating.

The measurement accuracy of ±1 °C is sufficient for most households, but in more sensitive regulation – for example in a children's room or in rooms with floor heating as an additional source – this deviation can be annoying. In such cases, a better option is EMF-1 or one of the SALUS models.

Elektrobock HD20 – balanced mid-range

HD20 is one step higher – it adds the window opening detection function and allows you to set the program individually for each day of the week (7×6 periods mode). This is a significant difference compared to HD10, which works with only two patterns (workday and weekend). For families with an irregular schedule – for example, when you come home late on Tuesday and earlier on Friday – individual setting of each day is a real energy saver.

The HD20 display is more readable, the menu layout is more logical and the device generates significantly fewer questions from customers after installation. From my point of view, HD20 is the right choice in the Elektrobock range for most households with standard radiators and a standard daily schedule.

Elektrobock EMF-1 – special case with external sensor

Elektrobock EMF-1 is a unique model in the Elektrobock range precisely because of the external temperature sensor. It works so that the head itself controls the radiator valve, but the temperature is measured by external sensors – which solves a fundamental problem that all heads with an internal sensor have: measuring the temperature directly at the radiator body is not the same as the temperature in the room.

Typical situation from practice: the radiator is behind a curtain or in a recess. A head with an internal sensor "perceives" the temperature behind the curtain, where it is warmer than in the room – and therefore closes the valve too early. The room is still cold. EMF-1 elegantly bypasses this problem by placing the external sensor somewhere in the free space of the room. The result is much more accurate regulation even in such demanding conditions.

Disadvantage: installation is a bit more complicated (the sensor cable has to be led discreetly), and not every customer is willing to deal with this complication. More about the correct installation you will learn in the article Installation of a programmable head on a radiator step by step.

SALUS PH 55 – entry to the premium segment

SALUS PH 55 is a more affordable model of the British series, which combines reliable programming with a more pleasant display and more accurate regulation. The measurement accuracy of ±0.5 °C is really noticeable compared to HD10 and HD20 – in practice, this means that the temperature in the room fluctuates less and heating reacts to deviations sooner.

SALUS PH 55 also offers a better processed window opening detection function: while in cheaper models the detection is triggered after exceeding a certain drop in temperature (e.g. 1 °C in 15 minutes), PH 55 has this threshold adjustable. This is important in rooms where the temperature naturally fluctuates faster – for example, corner rooms with two external walls.

From practical experience, I know that the PH 55 performs very well in older apartment buildings with lower quality insulation, where temperature fluctuations inside are more pronounced and a cheaper thermostat would react unnecessarily aggressively or, on the contrary, too late.

SALUS PH 60 – premium model with adaptive preheating

SALUS PH 60 is clearly the most equipped model in the compared range. In addition to everything that PH 55 offers, it also has an adaptive preheating function – so-called self-learning algorithm, which, based on the system's past behavior, can predict when it is necessary to start heating in order to achieve the desired temperature exactly at the set time.

Practical example: you set that at 7:00 the living room should be 22 °C. PH 60 learns from history that under the given conditions, it takes about 35 minutes to heat the room from 17 °C to 22 °C. Therefore, it automatically starts heating at 6:25, not at 7:00 – and you wake up to a warm room without having to manually adjust the program time.

This function is especially valuable in older buildings where radiators react slowly (large cast iron panel radiators, long distribution pipes), or in buildings with poor thermal insulation, where the temperature drops significantly during the night. In modern well-insulated apartments with fast panel radiators, this effect is less noticeable, but still present.

Another advantage of PH 60 is the adjustable PI regulation – the user can (within the menu) influence the aggressiveness of the regulator. This is a feature that the average customer never sets, but is very welcome in professional installations, where the optimal compromise between thermal comfort and energy consumption is sought. More about calibration and adaptation can be read in the article Calibration and adaptation of the programmable head after installation.

Practical comparison – who suits whom

After years of experience with installation and customer service, I can say that the choice between Elektrobock and SALUS is not only about price. It is primarily about what the customer expects from the regulator and what the specific conditions are in the apartment or house.

Elektrobock HD10 – for whom

A customer who has not had any automatic regulation so far and wants only a basic weekly program
A rented apartment, where reliability and simple operation for the tenant are priorities
Radiators in hallways or in spaces with low priority (storerooms, bathrooms with another primary heat source)
A situation where price is the decisive factor and it is about multiple radiators at once

Elektrobock HD20 – for whom

A family with a different schedule for each day of the week
A customer who appreciates the window detection function without paying a premium for a premium model
A standard family house or apartment, where there are no extreme thermal conditions
A situation where the customer wants "something better than HD10" but does not want to be overcharged

Elektrobock EMF-1 – for whom

Radiators behind curtains, in niches or otherwise covered spaces
Rooms with significant temperature stratification (large spaces, high ceilings)
A customer who wants precise regulation without moving to the SALUS premium segment

SALUS PH 55 – for whom

A customer with requirements for accuracy (children's room, home office, bedroom with sensitive people)
Older houses with poor insulation, where temperature fluctuations are more pronounced
A customer who wants better window detection with an adjustable threshold
Spaces where intensive ventilation takes place (kitchens, bathrooms with a window)

SALUS PH 60 – for whom

A customer who wants maximum automation without the need for manual program corrections
Houses with slow radiators (cast iron, large-volume) where preheating plays a crucial role
Professional installations, where there is a requirement to fine-tune the PI regulation for perfect comfort
A customer who plans to expand the system with smart home in the future (SALUS has expandable ecosystems)

Control and setup – where the real differences lie

One of the aspects that customers underestimate and only address at home is the control itself when setting up the program. HD10 has three buttons and a fairly linear menu – just read the manual and within 10 minutes you have it set up. HD20 has a slightly more extensive menu (due to the ability to set each day individually), but the logic is the same.

SALUS PH 55 and PH 60 have a larger numeric display that is more readable even for older people. Navigation in the menu is slightly more intuitive thanks to a greater number of buttons (usually 4–5 vs. 3 on Elektrobock). The downside is that more extensive functionality = a more extensive manual. When a customer sets up the adaptive preheating for the first time on PH 60, it takes longer than the basic program on HD10.

In practice, the following approach has proven effective: direct a customer who does not want to "read any manuals" to HD10 or HD20. For a customer who is technically skilled or not afraid to spend a bit of time navigating the menu, PH 55 or PH 60 are perfectly suitable – it is worth it. A detailed step-by-step guide for setting up a weekly program can be found in the article Setting up a weekly program on a thermostatic head.

Battery consumption and reliability in long-term operation

Both manufacturers state a battery life of around 1.5–2 years under normal operation. From practical experience, I can confirm that SALUS models (PH 55, PH 60) usually last slightly longer on batteries under similar load – likely due to a more energy-efficient valve motor control. Elektrobock EMF-1, on the other hand, is slightly more demanding in terms of power consumption, as it also needs to power an external sensor.

Important practical warning: never use rechargeable NiMH batteries in programmable heads (neither Elektrobock nor SALUS). The reason is simple – NiMH batteries have a lower nominal voltage (1.2 V vs. 1.5 V in alkaline batteries), and when the voltage drops, the electronics of the head behave unpredictably – either the program resets or the valve gets stuck in one position. Always use high-quality alkaline batteries. More on the topic of batteries and power supply can be found in the article Battery replacement in a programmable head and power supply lifespan.

As for long-term reliability, both manufacturers have a good reputation in practice. The most common failure after 3–5 years of operation is mechanical wear of the valve drive – the motor stops closing or opening sufficiently. This is not an electronics fault, but natural wear. There is no fundamental difference between the brands in this regard. The article Programmable head does not heat or close – common faults and solutions deals with this issue in more detail.

Price comparison – where the real value lies

Prices change over time, so I do not list specific euros – check current prices directly on the product pages. However, the percentage relationship between the models has been stable for a long time:

HD10 is the cheapest – the basis for basic regulation
HD20 is about 15–25 % more expensive than HD10 – the added value of window detection and a 7-day program makes sense
EMF-1 is similarly priced to HD20, but with an external sensor
PH 55 is about 30–50 % more expensive than HD20 – a premium segment with truly better accuracy
PH 60 is the most expensive – with adjustable PI regulation and adaptive preheating

If you are equipping an entire family house (6–10 radiators), the difference between HD20 and PH 60 for the whole system amounts to several tens of euros. In the context of annual heating savings, which can reach 10–20 % consumption with well-programmed heads, the investment in a higher quality model pays off quite quickly. Read more about this calculation in the article Programmable vs. manual thermostatic head – which one is worth it.

Installation and compatibility with different types of valves

All compared models have the standard thread M30×1.5, which covers the majority of thermostatic valves on the Slovak market (Honeywell, Danfoss, Heimeier, IMI Hydronic, Caleffi and others). In the case of non-standard valves, reducing adapters are available – both manufacturers either include them with the head or they are available as accessories.

One detail that is occasionally overlooked in practice: after fitting a new programmable head, the device must perform so-called adaptation – it automatically detects the range of valve movement (fully open, fully closed). This process takes a few minutes and occurs automatically at first start-up for both Elektrobock and SALUS. If the adaptation does not run correctly (e.g., it was interrupted), the head may not control the valve correctly. Solution: remove and remount the head, which will reset the adaptation. The entire process is described in the article Calibration and adaptation of a programmable head after installation.

Most frequently asked questions (FAQ)

Is SALUS PH 60 really significantly better than Elektrobock HD20, or is it just marketing?

In everyday basic operation – that is, setting up the program and maintaining temperatures – the differences are measurable, but not dramatic. The real added value of PH 60 becomes apparent mainly in two situations: in rooms with slow radiators, where adaptive preheating makes a real difference in comfort, and when very precise regulation is required (±0.5 °C vs. ±1 °C). If these situations do not occur, HD20 is a fully functional and reliable alternative at a lower price.

Can I use Elektrobock and SALUS interchangeably on one radiator (e.g., replace one with the other)?

Yes, the M30×1.5 thread is compatible between both manufacturers. After replacing the head, you only need to perform the adaptation again (the new head will automatically "discover" the range of valve movement) and set the program. No special adjustments are needed.

Elektrobock EMF-1 or SALUS PH 55 – which is a better choice for a radiator behind a cabinet?

For a radiator behind a cabinet, EMF-1 is essentially the ideal solution, because you can place the external sensor in the free space of the room and the regulation works with the actual air temperature. PH 55 does not have an external sensor, so behind a cabinet it will measure the temperature in the enclosed space – which is less accurate. In this specific case, EMF-1 wins despite the fact that PH 55 is generally a more accurate model.

How long does it take to set up a program on PH 60 compared to HD10?

HD10 can be set up in 5–10 minutes if you are at least somewhat technically literate. PH 60 takes 20–30 minutes for the first setup including all functions (weekly program + adaptive preheating + window detection setup). However, if you let PH 60 run after installation – the self-learning function will take care of optimization without further input. In the long run, PH 60 thus requires fewer manual adjustments than the simpler model.

Can these heads be integrated into smart home systems (Home Assistant, Tuya)?

The compared models (HD10, HD20, EMF-1, PH 55, PH 60) are autonomous devices without Wi-Fi or ZigBee – they cannot be connected to smart systems. SALUS has other models in its portfolio (iT600 and Smart Home series) with wireless interfaces, but those are outside the scope of this comparison. If smart home integration is a priority, we recommend looking at the category programmable heads for a wider selection.

Which brand has better service and availability of spare parts in Slovakia?

Elektrobock has the advantage of being a Czech company with direct presence in the Czech and Slovak markets – warranty service and returns are usually faster. SALUS has a European distribution network, and service is handled through Slovak sellers/importers. In practice, the difference in a standard return is not dramatic, but for those who prefer the "proximity" of the manufacturer, Elektrobock has a slight edge.

Conclusion – what to take away from the comparison

If I had to summarize the comparison in one sentence: Elektrobock is the right choice if you want a reliable and simple solution at a good price. SALUS is the right choice if you want higher comfort, accuracy, and advanced features and are willing to pay for them. It is not a battle of "good vs. bad" – both brands do their products well, each in their own segment.

In practice, I most often come across the following combinations: living room + bedroom get PH 55 or PH 60, children's room EMF-1 (if the radiator is in an inconvenient location), and hallways/bathrooms HD10. There is no reason why both manufacturers could not coexist in one house – the thread is the same, and each room can have the model that suits it best.

For those who are still deciding whether they need a programmable head at all or want to learn more about choosing one, we recommend the article How to Choose a Programmable Radiator Head and the overview Frequently Asked Questions About Programmable Heads – both can be found in the same Knowledge Center.

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