Honeywell Home Rondostat HR20-Style programmable Radiator Controller, White

If, like me, you want a electronic TRV that thermostatically controls the radiator switching, comes on and off at simple set periods and doesn't cost the earth then this unit is for you. I have installed 4 of these devices throughout my house and they have exceeded my expectations. They are not as noisy as some would have you to believe and when you hear them it's actually reassuring that you can hear them working. The build quality is also very good. The only gripes i would have are that, as some have already mentioned, when they are installed vertically, the display is upside down, there are only 2 switching periods and they can be very difficult to install without the right valve fitting. On the last point I actually ended up replacing the valves on a few of my radiators to accommodate these units. Overall a good unit for it's price.

BACKGROUND I bought this HR20 unit for our kitchen radiator. We currently control our boiler using a wireless thermostat which we place in which ever room we are currently using. Our home is occupied for most of the day. GOOD ASPECTS OF THE HR20 * Well built * Ultimately, it does what it sets out to do * Lasts for a long time on one change of batteries BAD ASPECTS * When mounted on our radiator, the HR20's controls and display are upside down! (Although it is easy to remove the HR20 display from the connector) * The HR20 allows for a maximum of 2 heating periods per day (e.g. 6am-9am and 5pm-7pm). Which makes this unit less than ideal for a kitchen where we need at least 3 heating periods each day (breakfast, lunch, dinner). * The unit only displays the current target temperature. It doesn't display the current temp, or whether the valve is open or not. I much prefer appliances which tell me what they are doing. * This unit cannot communicate with the boiler (which I knew before I bought it but I hadn't entirely thought through the implications). * Opening / closing the valve is a little noisy (which seems to be normal for electronic TRVs) CONCLUSION The HR20 wasn't suitable for use in our kitchen but it is fine in my young daughter's bedroom. Ultimately I'd much prefer a wireless TRV which can call for heat from the boiler. These are currently available but are quite expensive.

Classic TRV working perfectly both on horizontal and vertical positions (UK or Eu radiators). Its old school system leaves it out from domotic implementation but Honeywell is a well known brand in the trade for its reliability and precision, with these valves being a good example of such qualities. Recommended

had a older model this new model is much better and stronger really controls each room to your requirements

A year after purchase these are all ending up in the bin. Noisy, breaking down, flat batteries. Waste of money.

i m heating engineer it workw perfectly in my house over other trv.

I have to admit I have bought this product as a peripheral for an overall controlled home heating project, where there is more emphases on the best compromise use of an erratic heat source rather than 'optimum comfort temperature'. The processor is a standard Atmega, and all the i/o pins necessary to re-program it and electrically 'talk to' it are brought to a suitable socket. Furthermore, the open source community, (to whom I currently feel greatly indebted), have produced their own (free) documented version of the valve's proprietary firmware, for easy modification. Therefore, as a very reasonably priced moderately well constructed motorised intelligent radiator control valve, I believe it quite good with very little competition at present. (Search 'Kemputa' to contact for more detail.) I feel I should review the product for use as intended, not for my use. It switches between two temperatures in a moderately controllable way according to a user defined time program, and appears to perform. Whether this makes it worth its expense is an individual decision. The ergonomics of user programming it I would rate as moderate. The big control knob on the top is an attraction to children, and is easily accidently turned. It can be 'child disenabled'. However, as an experiment, I left it fitted to a radiator with a young curious child, without mentioning it. The child soon noticed. As I predicted, It de-activated the child protection in about two minutes, without understanding what it had done. I cannot comment on durability or battery life. Hence my okay rating.

Fonctionne bien, un peu bruyant lorsqu'il manœuvre mais je l'entend le matin car je suis déjà réveillé, je ne pense pas qu'il me réveillerait si je dormais. Facile à installer (j'avais déjà un modèle similaire) j'espère que celui là durera plus longtemps que le précédent (à peine 2 ans).

No tendrán wifi, ni bluetooth, ni una app preciosa, ni se conectan a Alexa, ni una pantalla táctil a todo color... Pero puedo asegurar que funcionan perfectamente, sin ningún problema y que son completamente recomendables. La única pega es que las instrucciones están en alemán (aunque en internet están en inglés)

Après quelques jours, la vanne thermostatique a affiché le code E3 qui signale un problème de raccord. Celui-ci était pourtant correctement effectué et avait bien fonctionné auparavant. L'article n'est pas fiable.

Facilissimo da installare, montato su valvole termostaticche Caleffi. Per le Caleffi serve adattatore, non fornito e da acquistare a parte. Facile da programmare, ha solo funzioni di base ma basta e avanza. Permette di impostare due soglie di apertura e chiusura valvola con programmazione settimanale o giornaliera. Esteticamente ben fatto, non troppo ingombrante e silenzioso. Di giorno non si sente funzionare, di notte è appena percettibile ma non fastidioso.

Für alle die berufstätig sind, ist dieses Produkt die beste Wahl!!! Es regelt zuverlässig in jedem Zimmer die eingstellte Raumtemperatur. Bei etwas ältern Heizungsanlagen wo ev. keine Nachtabsenkung vorhanden ist übernimmt dieses das Rondostat problemlos. Meine Anlage besitzt eine Nachtabsenkung und ich habe mich dennoch für dieses Modell entschieden, da dieser Regler die Temp. exakt regelt wie kein anderes manuelles Ventil. Der Fenstermodus-Lüftung bei geöffneten Fenster wird allerdings erst bei krassen Temp.-Unterschieden aktiv.(war mir vorher schon klar) Die Temp. bei diesem Modus sollten schon in den -Bereich gehen!!! Auch für Nutzer die ihre vier Wände nicht verlassen hält Rondostat +Punkte bereit. Ein ewiges hin - und herkurbeln entfällt, da der Regler leicht zu programmieren ist. Auch hat man die Möglichkeit bei ev. nicht zu angenehmer Temp. diesen Regler wie bei manuelllen Typen am Drehrad zu korrigieren.Eine solide Einstellung und Abweichung in der Nacht kann schon mal eine Kostenersparnis von 10% sein. Nicht gleich 30% wie angegeben, das halte ich für übertrieben aber 10% für ein Einfamilienhaus ist schon ein Batzen Geld. Wer noch ältere Ventile von Oventrop bzw.Ventilanschlüsse hat muss sich ein Adapter besorgen.Alle neue Verschraubungen sind auf M30x1,5 gesetzt.Ältere Verschraubengungen sind auf M30x1,0 ausgelegt. Dieser Adapter kostet in etwa 10€ aber es lohnt sich und er funzt problemlos. Auf eine App hat man verzichtet um die Regler ev. im fernen Land zu steuern, ist auch für mir nicht unbedingt sinnvoll. Ob in Norge oder Palma, man kann sich schon vorher darauf einstellen. Die neuen Modelle sind designermäßig überarbeitet worden und haben ev. diesen Quatsch, auf alle Fäle mehr Schaltzeiten!!!! Wer es braucht?! Ansonsten ist diese Produkt sehr zu empfehlen, ich habe Discounterware getestet wo man an solchen Equipment den Glauben verliert. Dieses Produkt (meine Meinung) KAUFEN!!!