Danfoss RET230P Discontinued: Replacement Thermostats Explained

Last updated: October 2026

The Danfoss RET230P electronic room thermostat (087N743000) is no longer stocked by Plumbco. If you're looking for a replacement, it's important to check your existing thermostat's wiring and heating system requirements before choosing another model.

The Danfoss RET1001M-V2 (087N6461) is one alternative worth considering, but it should not automatically be treated as a direct replacement. Although both products are designed for room temperature control, their electrical connections and installation requirements differ.

In this guide, we'll explain the key differences between the Danfoss RET230P and RET1001M-V2, and what to check before buying a replacement thermostat.

What Was the Danfoss RET230P?

The Danfoss RET230P (087N743000) is an electronic room thermostat designed to control central heating systems.

Its key specifications include:

• Power supply: 230V AC

• Temperature range: 5–30°C

• Switching accuracy: Less than 1°C

• Switch type: Volt-free SPDT contacts

• Switch rating: 3(1)A

The RET230P's volt-free contacts can be used for mains or low-voltage switching, subject to the requirements of the heating system. This flexibility is one reason it's important to check the wiring and control requirements when selecting a replacement.

You can still view the original product details here: Danfoss RET230P Volt-Free Room Thermostat 087N743000.

Is the Danfoss RET1001M-V2 a Replacement for the RET230P?

The Danfoss RET1001M-V2 electronic dial thermostat (087N6461) is an alternative to investigate if you need a replacement room thermostat. However, compatibility depends on your existing installation, so it should not be assumed to be a direct substitute.

The RET1001M-V2 features:

• A 230V AC power supply

• An adjustable temperature limiter range of 5–35°C

• Frost protection and a standby setting

• LED indicators for power and heat demand

• ON/OFF control with load compensation

• A three-wire installation

• A custom backplate

The main difference to consider is the switching and wiring arrangement. The RET230P has volt-free SPDT contacts, while the RET1001M-V2 is specified as an ON/OFF modulating-control thermostat with a three-wire installation. The RET1001M-V2 also uses a custom backplate, so it may not fit the existing mounting arrangement.

Before ordering, check the boiler or heating system manufacturer's instructions and confirm that the replacement's electrical connections and control method are suitable.

View the product: Danfoss RET1001M-V2 Dial Thermostat 087N6461.

What About the Danfoss RET1001M (087N6460)?

The original Danfoss RET1001M (087N6460) is another model you may come across when searching for a replacement. This model has also been discontinued.

The RET1001M is a mains-powered electronic dial room thermostat with frost protection and ON/OFF modulating control. The manufacturer's specifications list a three-wire installation and a custom backplate.

Because both the RET1001M and RET1001M-V2 have specific installation requirements, neither should be assumed to be a direct replacement for the RET230P without checking compatibility.

You can view the original model's product details here: Danfoss RET1001M Dial Thermostat 087N6460.

How to Choose the Right Replacement Thermostat

Before buying a replacement for your Danfoss RET230P, check the following:

1. Wiring and electrical connections

Check whether your existing thermostat uses volt-free contacts or a switched output, and confirm the replacement supports the control arrangement required by your heating system.

2. Power supply

Confirm the supply voltage and wiring requirements. A thermostat that also operates from a 230V supply may still use a different switching arrangement.

3. Mounting and backplate

Check the dimensions and mounting arrangement. A replacement may require a different backplate or changes to the installation.

4. Heating system compatibility

Check the boiler or heating system manufacturer's instructions, including any requirements for particular thermostat types or control methods.

5. Installation requirements

If you're unsure about the existing wiring or the suitability of a replacement, ask a qualified heating engineer or electrician to check before purchasing or installing it.

Need Help Finding a Replacement?

If you're replacing a Danfoss RET230P, don't choose a thermostat based on appearance or voltage alone. The correct replacement must match your heating system's electrical and control requirements.

You can review the specifications for the original Danfoss RET230P and compare them with the Danfoss RET1001M-V2 before deciding.

If you're uncertain about compatibility, check with the manufacturer or a qualified installer before ordering.