Honeywell Home HR92 Won’t Fit Your Radiator Valve? Here’s How to Fix It

Step-by-step fix guide | Honeywell Home heating controls

Try this first — Check the valve thread first: Resideo says the HR92UK and HR91 fit the most common radiator valves of the type M30 x 1.5. For a Danfoss valve body, Resideo lists the EVA1 adaptor.

This guide is for evohome owners fitting a Honeywell Home HR92 radiator controller. The valve thread check in step 1 also applies to the HR91, but the fitting steps are Resideo’s HR92 steps. It follows the product pages, brochures and evohome installation guide from Resideo, which makes Honeywell Home products.

What This Problem Means

The HR92UK and HR91 fit the most common radiator valves of the type M30 x 1.5. If your valve is a Danfoss or Oventrop body, you need the matching adaptor. Resideo’s installation guide fits the HR92 by screwing the adaptor onto the valve, then pushing the controller onto the adaptor and locking it.

Common Symptoms

  • The adaptor won’t screw onto the radiator valve
  • Your radiator valve is a Danfoss or Oventrop body
  • The controller won’t sit fully on the adaptor or lock

Safe Checks You Can Try

1. Check the valve thread

Resideo’s product pages say the HR92UK and the HR91 fit the most common radiator valves of the type M30 x 1.5.

2. Danfoss valve: use the EVA1 adaptor

Resideo’s GB evohome brochure lists the EVA1 adaptor to fit a Danfoss valve body, supplied as standard with the HR92UK. The brochure doesn’t say the same for the HR91.

3. Oventrop valve: the AOV30 adaptor

Resideo’s 2020 UK evohome brochure lists an AOV30 adaptor to fit Oventrop valve bodies.

4. Get the HR92 ready

Slide the locking mechanism to the unlock position, remove the adaptor from the bottom of the controller, and unscrew the black wheel fully anti-clockwise.

5. Fit the adaptor and the controller

Remove any existing control on the radiator valve. Screw the white end of the adaptor onto the radiator valve, push the controller fully onto the adaptor with the screen facing towards you, then slide the locking mechanism to the locked position.

6. If the valve body is the problem

Resideo lists a VHL120 valve body kit for radiators as an accessory. Changing a valve body is a job for a heating engineer, and if a valve is seized, damaged or leaking, stop and contact one.

Adaptors Resideo names

Code What it is for Source
EVA1 Danfoss valve body; supplied as standard with the HR92UK Resideo’s GB evohome brochure (Jan 2024)
AOV30 Oventrop valve body Resideo’s UK evohome brochure (2020)
VHL120 Valve body kit for radiator Resideo’s GB evohome brochure (Jan 2024)

The fitting steps come from Resideo’s evohome installation guide, and the EVA1 and VHL120 from Resideo’s GB evohome brochure. The HR91 has the same M30 x 1.5 valve fit.

When To Contact Support

If none of these steps fix it, contact Resideo, which makes Honeywell Home products, through Resideo’s UK site.

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.

We may earn a commission if you request quotes through this link, at no cost to you.

⚠️ Important: This page is for guidance only. Heating systems vary. If a radiator valve is seized, damaged or leaking, stop and contact a heating engineer. Follow Honeywell Home’s official guidance for your device.