
DESCRIPTION
Improve heat circulation and warm your room faster with this radiator heat diverter, designed for double panel radiators. No power required and no running costs.
Multi-Buy Offer:
- Buy 2+ use code BOOSTHEAT5 for 5% off
- Buy 3+ use code BOOSTHEAT10 for 10% off
Key Features:
- Directs warm air into the room instead of rising behind the radiator
- Improves heat distribution and overall heating efficiency
- Passive operation with no electricity required
- Quick and simple installation
- Gloss white finish to match standard radiators
- Available in widths from 400mm to 2000mm
Compatibility:
- Suitable for double panel radiators with top grills
- Not suitable for electric radiators
- Not suitable for curved or flat top radiators without grills
Product Details:
- 1200mm and above supplied in two pieces for safer delivery
- Designed to fit most UK standard double radiators
- Double type for radiators with two rows of fins
Important:
- Radiator not included
- Diverter only
Why it works:
Redirects rising heat into the room, reducing heat loss behind the radiator and improving heating performance.
Click here for our installation guide.
For a full list of actual sizes of boosters, see the image below:

We ship primarily with DHL. Parcelforce is used for remote or extended postcode deliveries. All orders include tracking. You will receive order confirmation and invoice emails after purchase, followed by a dispatch email with tracking details. SMS delivery updates are sent if a mobile number is provided. Tracking links allow you to reschedule delivery, leave instructions, or contact the courier directly.
Occasional courier delays may occur. Please contact the courier first using your tracking link. If the issue is not resolved, contact us and we will assist.
Accessories are shipped via Royal Mail Tracked 48.
Remote areas: A delivery surcharge applies to Northern Ireland, Scottish Highlands, Scottish Islands and Channel Islands for larger items. Accessories are not subject to this surcharge.
All items can be returned within 30 days from the purchase. Returned products have to be unused, undamaged and in original packaging. For more return information, please visit our Return Information Page.
We provide a 5-year warranty on towel rail radiators and 2 years on valves, electric elements and taps.