Radio Teleswitch Switch-Off: Protect Your Heating and Hot Water in Essex

Across the UK, a phased switch-off is underway for older radio-controlled electricity meters and associated “radio teleswitch” devices. These meters were widely installed to support multi-rate tariffs (such as Economy 7 or Economy 10) and to control when certain circuits—typically storage heaters and immersion heaters—receive power at off‑peak times. The radio signal that enables this switching is being withdrawn. As that happens, households and rented properties that still rely on these meters face two immediate risks:

• Higher energy bills, because off‑peak switching may stop working properly and more consumption may be charged at peak rates.
• Loss of reliable heating and hot water, especially where electric storage heaters or immersion heaters depend on the teleswitch to charge overnight.

What are radio-controlled meters? Traditionally, a radio teleswitch or radio‑controlled meter receives a timing signal that tells it when to switch between day and night rates and, in many cases, when to energise dedicated circuits for heating and hot water. You may see a separate “teleswitch” box near the meter, references to “RTS” or “Radio Teleswitch,” or you might have two MPANs (two electricity supply numbers) for one property. If this is your setup, the switch-off is directly relevant.

Why does this matter for heating and hot water? The most common impacts are:

• Electric storage heaters may not charge overnight if the off‑peak circuit is never energised, leaving rooms cold the next day.
• Immersion heaters on economy tariffs may fail to heat cylinders at their scheduled cheap-rate times, causing intermittent hot water.
• Some legacy meters can default to a single, peak-rate schedule if they no longer receive a radio signal, increasing costs.
• In properties with complex electric heating controls, contactors and timers that previously relied on the meter’s signal can stop switching.

Even gas and oil heating systems are not immune to disruption. Modern boilers rely on electricity for controls, pumps and safety systems. If a meter issue leads to supply interruptions or tripping during the switchover, boilers and controls can shut down, leaving properties without heating or hot water until the problem is resolved.

For Essex homeowners and landlords, the timing is important. A failed switchover or a meter that is left too late can result in:

• Unexpectedly higher winter bills where night‑rate charging stops.
• Tenants reporting no heating/hot water due to storage or immersion circuits not energising.
• Emergency call-outs and avoidable downtime that could be prevented with a planned upgrade.

Modern smart meters (typically SMETS2) remove reliance on the old radio teleswitch signal. They communicate securely via a national data network to provide accurate readings and can be configured for time‑of‑use tariffs. For properties with electric heating, suppliers can install appropriate meters and switching solutions (for example, smart meters with controlled outputs or alternative arrangements) to maintain off‑peak functionality without the legacy radio signal.

The advantages of upgrading are practical and immediate:

• Accurate, automatic readings with no estimates, making bills clearer and helping you track consumption.
• Support for multi-rate and time-of-use tariffs without the old radio signal, preserving off‑peak benefits for electric heating where applicable.
• Faster fault resolution because suppliers can often diagnose issues remotely.
• Better visibility of usage through in-home displays and apps, helping households and landlords manage costs.

In short, replacement is not just a technology update; it is essential to protect comfort, control costs, and avoid heating disruptions as the old radio service is withdrawn.

What Essex homeowners and landlords should do now

1) Identify whether you are affected

• Check your meter and surroundings. Look for a separate radio teleswitch unit, any reference to “RTS,” or labels indicating controlled off‑peak circuits for storage heaters or immersion heaters.
• Consider your tariff. If you are on Economy 7, Economy 10, or another multi‑rate arrangement—and especially if your heating relies on night‑rate charging—you are more likely to be affected.
• Review your supply numbers. Two MPANs or unusual wiring to off‑peak boards are strong indicators of a teleswitch setup.
• If in doubt, contact your electricity supplier. They can confirm whether a replacement is required and what type of smart meter will maintain your tariff and circuit control.

2) Arrange a meter replacement with your energy supplier

• Book proactively. Replacements are typically arranged by your electricity supplier and are usually installed at no upfront cost. Demand is high, so early booking reduces the risk of delays.
• Flag special requirements. Tell the supplier if you have storage heaters, an immersion heater on an off‑peak circuit, multiple consumer units, or two MPANs. This helps them send the right engineer with the correct meter type and switching solution.
• Ensure access. Clear space around the meter, provide access to any off‑peak boards/immersion switches, and make sure someone can grant entry on the day.

3) Before and after the appointment: a practical checklist
Before:

• Photograph the current setup (meter, teleswitch, consumer unit labels, and any off‑peak contactors/timers). This helps verify circuit functionality after the change.
• Note heating schedules (when storage heaters charge or when hot water heats) and any timer settings.
• If you are a landlord, give tenants clear notice of the visit and expected downtime.

After:

• Confirm that storage heaters charge overnight and that immersion heaters heat at the expected times. If your property uses a replacement time‑of‑use arrangement, ensure the off‑peak window is correctly configured.
• Check the in‑home display (if provided) to verify that day/night rates are registering correctly.
• Test gas or oil boilers, heating controls and hot water after the appointment to ensure everything restarts correctly.
• Keep records of the new meter serial number, installation notes, and any changes to tariff structures.

4) Understand landlord responsibilities

• Duty to provide safe, reliable heating and hot water: Under the Landlord and Tenant Act 1985 and the Homes (Fitness for Human Habitation) Act 2018, landlords must ensure properties have adequate heating and hot water. Allowing an obsolete meter to compromise these services can create a hazard and expose you to enforcement action.
• Electrical safety: The PRS Electrical Safety Standards require a satisfactory EICR at least every five years. While the meter itself is the supplier’s equipment, the property’s wiring, immersion circuits, and heating controls are part of the landlord’s responsibility. If the meter change exposes wiring faults, prompt remedial work may be required.
• Tenant rights around meters: If tenants are the bill payers, they generally have the right to request a smart meter. Landlords should not unreasonably prevent installations but should coordinate access to avoid disruption and ensure that heating and hot water remain fully functional afterward.
• Tariff suitability for electric heating: For properties with storage heaters or off‑peak hot water, ensure the chosen tariff and meter configuration support those systems. Incompatible tariffs can significantly increase running costs for tenants and may result in complaints or disrepair claims.

5) Plan ahead to avoid winter disruption

• Do not wait for a failure. As the radio service is withdrawn, legacy setups can become unreliable without warning. Booking early protects vulnerable occupants and reduces the risk of peak-season call-outs.
• Combine with routine maintenance. Coordinating the meter replacement with heating system checks is prudent—especially for homes with unvented hot water cylinders, immersion heaters, or complex controls. Servicing boilers, inspecting hot water systems, and verifying thermostats and programmers will help ensure everything works as expected after the meter upgrade.
• Build contingency. For multi-unit portfolios, prioritise properties that rely on electric heating and any homes with elderly or vulnerable tenants. Document the upgrade plan and keep tenants informed.

6) How Brentwood Heating can support you locally

• Heating continuity planning: We can review your heating and hot water setup—whether electric, gas, or a mix—to identify any dependencies on off‑peak circuits and advise on a practical plan so comfort is maintained throughout and after the meter change.
• Post‑installation checks and remedials: If your storage heaters or immersion heaters do not operate correctly after a meter swap, our engineers can investigate property-side wiring, timers, contactors, immersions, hot water cylinders, and controls to restore proper operation swiftly.
• Boiler and system readiness: For homes with gas boilers, we provide servicing, diagnostics, and repairs to ensure pumps, controls, programmers, and safety devices recover correctly after power interruptions. We also handle central heating issues, radiator balancing, and power flushing where performance has degraded.
• Responsive support for landlords: With rapid response times and 24/7 emergency call-outs, we help minimise downtime in rental properties. Our Gas Safe registered engineers work neatly and respectfully, reducing disruption for tenants and providing clear documentation for your records.
• Local coverage and reliability: We serve Brentwood and the wider Essex area—including Upminster, Hornchurch and Southend—delivering prompt, transparent service and tailored quotations. Where appropriate, we can coordinate visits with your tenants and other contractors to streamline the process.

Key takeaways for Essex residents:

• If you have an older radio-controlled meter or a teleswitch setup, you should plan a smart meter upgrade now to avoid higher bills and heating or hot water interruptions.
• Your electricity supplier is responsible for replacing the meter; tell them about any storage heaters, immersion circuits, or dual-rate tariffs so they provide the correct equipment.
• After the swap, verify that all heating and hot water systems work as intended. For any property-side issues, Brentwood Heating is on hand to help diagnose and resolve them quickly.
• Landlords must ensure continued safe and affordable heating for tenants. Early action, clear communication and coordinated maintenance are the simplest way to meet your legal obligations and keep occupants comfortable.

For advice or support with heating and hot water before, during, or after a meter replacement, contact Brentwood Heating for a tailored, no‑obligation quote. We are here to help you protect comfort, control costs, and maintain compliance across your home or property portfolio.