Needs an evohome controller (not R3) | No screen | M30 x 1.5 valves | AA batteries, two-year life | Open window feature
Overview
The Honeywell Home HR91 is a wireless radiator controller with no screen, made for evohome. Resideo, which makes Honeywell Home products, describes “continuous 2-way communication with the evohome”, and its installation guide lists the HR91 as a radiator controller for the evohome Controller (ATC928). It fits the most common radiator valves of the type M30 x 1.5. Local control is a basic override button for setting frost protection, and Resideo lists an open window feature that shuts off the radiator when the room temperature drops, plus a child lock with a simple mounting lock.
It is battery powered with a two-year battery life, and Resideo’s installation guide says to insert the AA batteries supplied. You need an evohome controller for the HR91 to work at all, and Resideo says evohome can control up to 12 zones individually. For app control, evohome uses Resideo’s Total Connect Comfort (TCC) app, and Resideo lists IFTTT, Google Assistant and Amazon Alexa for evohome. An anti-vandal protection shield is an optional accessory.
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Key Features
Pros & Cons
Pros
Cons
Which Version Should You Buy?
Good to Know
The HR91 only works bound to an evohome controller, so you need an evohome system to use it. Resideo’s UK installation guide lists it as a radiator controller for the evohome Controller (ATC928). Resideo’s guide for its newer evohome R3 controller, published for EMEA, says the older HR92 and HR91 controllers will not work with that version of evohome controller.
Resideo also sells the HR91 in the evohome Essentials Pack (ATP926G3001), which it lists as a controller, 6 x HR91 and a receiver.
Setup & Installation
Resideo’s evohome installation guide says to set up the zone on the evohome Controller first (unless you are following guided configuration): press and hold Settings for 3 seconds, press the green tick, press ADD ZONE, type a name for the zone and press the green tick, then press RADIATOR VALVE, and press YES if you want the evohome Controller (which needs to be in that zone) to control the zone temperature, otherwise press NO. It says you must repeat these steps for each radiator controller. Then, on the HR91 itself: remove the top cover, open the battery clip and insert the AA batteries supplied, then close the clip and replace the cover. Press the Binding button for 5 seconds. The LED flashes amber for up to 2 minutes while binding, and successful binding is confirmed by the LED showing continuous green for 5 seconds. You should then see a SUCCESS message on the evohome Controller; if not, go back and bind it again. Then press the green tick to add another radiator to the zone, or the red cross if you don’t need to add another.
To check the radio signal, Resideo’s guide has you press and hold two buttons for 5 seconds, until both LEDs flash amber, then press the tick on the evohome screen to start the test. Signal strength is shown on the controller from poor to excellent, and the test exits automatically after 10 minutes.
Common Problems & Fixes
Running into issues? Our Honeywell Home troubleshooting guide covers step-by-step fixes taken from Resideo’s own support pages, including won’t fit the radiator valve and won’t bind to evohome.
Who Should Buy It
Anyone with an evohome controller (not the newer evohome R3) who wants screenless radiator controllers with a child lock and an open window feature.
Verdict
The Honeywell Home HR91 is a screenless evohome radiator controller with a two-year battery life, a child lock and an open window feature. It only works bound to an evohome controller, so check your system first.
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Need a hand with this?
If a radiator valve is seized, damaged or leaking, a heating engineer can look at it. Any work on the boiler itself must be done by a Gas Safe registered engineer. You can compare up to 3 quotes from local heating engineers.
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