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Hydronic Plinth Heaters

Unlike Electric Plinth Heaters, Hydronic Plinth Heaters connect to your central heating system to deliver efficient, even warmth. Ideal for maximising space, these Plinth Heaters offer a safe alternative to a radiator while maintaining a comfortable room temperature. What's more, Hydronic Plinth heaters are perfect for kitchens, bathrooms, and utility rooms, and are sure to keep you warm on the coldest of days. Discover the full collection of Hydronic Plinth Heaters below.

 
 
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9 results
smiths-space-saver-ss55-hydronic-plinth-heater-with-brushed-steel-grille

Smith's Space Saver SS5/5 Hydronic Plinth Heater with Brushed Steel Grille

4.9
27 ratings
Smith's
£257.30 inc
VAT
Save £15.11 | Was £272.41
✓ In Stock
smiths-space-saver-ss95-hydronic-plinth-heater-with-brushed-steel-grille

Smith's Space Saver SS9/5 Hydronic Plinth Heater with Brushed Steel Grille

5.0
10 ratings
Smith's
£354.80 inc
VAT
Save £32.27 | Was £387.07
✓ In Stock
smiths-space-saver-ss3-hydronic-plinth-heater-with-brushed-steel-grille

Smith's Space Saver SS3 Hydronic Plinth Heater with Brushed Steel Grille

5.0
8 ratings
Smith's
£215.45 inc
VAT
Save £8.96 | Was £224.41
✓ In Stock
myson-kickspace-600-hydronic-plinth-heater-with-grille

Myson Kickspace 600 Hydronic Plinth Heater with Grille

5.0
8 ratings
Myson
£358.80 inc
VAT
✓ In Stock
myson-kickspace-500-hydronic-plinth-heater-with-grille

Myson Kickspace 500 Hydronic Plinth Heater with Grille

5.0
14 ratings
Myson
£294.00 inc
VAT
✓ In Stock
smiths-space-saver-ss75-hydronic-plinth-heater-with-brushed-steel-grille

Smith's Space Saver SS7/5 Hydronic Plinth Heater with Brushed Steel Grille

4.8
8 ratings
Smith's
£322.80 inc
VAT
Save £30.40 | Was £353.20
✓ In Stock
myson-kickspace-800-hydronic-plinth-heater-with-grille

Myson Kickspace 800 Hydronic Plinth Heater with Grille

4.9
8 ratings
Myson
£402.00 inc
VAT
Save £66.29 | Was £468.29
✓ In Stock
smiths-space-saver-ss5-dual-hydronic-plinth-heater-with-stainless-steel-grille

Smith's Space Saver SS5 Dual Hydronic Plinth Heater with Stainless Steel Grille

5.0
1 rating
Smith's
£384.00 inc
VAT
✓ In Stock
smiths-space-saver-ss80-hydronic-plinth-heater-hpss10009

Smith's Space Saver SS80 Hydronic Plinth Heater - HPSS10009

Smith's
£262.80 inc
VAT
Save £7.19 | Was £269.99
Expected - 20/06/26

Will a hydronic plinth heater fit under my kitchen or bathroom cabinets?

Measure the plinth recess height, width and depth and match them to the product dimensions shown, heights on the range go from about 51mm to 125mm, widths from roughly 450mm up to 649mm, and depths between about 249mm and 355mm. Many Space Saver and Kickspace models are specifically designed for shallow plinths, so if your recess is 100mm high and 600mm wide you could opt for a 600mm unit such as the Myson Kickspace 600 or an equivalent Smith's model. Picking a model slightly smaller than your recess gives some clearance for grille fitting and airflow.

How much heat will a hydronic plinth heater deliver — are they powerful enough for a kitchen or bathroom?

Heat outputs in the range span roughly 1.0–3.0 kW across the collection, with most models in the 1–1.5 kW band and a few offering 1.6–2.0 kW or up to 2.6–3.0 kW. A small cloakroom or compact bathroom will often be comfortable with a 1–1.5 kW unit, while larger kitchens or long run plinths may need a 1.6–3.0 kW option or the dual Smith's SS5 Dual for extra output. Match the output to the room size and how warm you like the space at ankle level.

What's the advantage of a hydronic plinth heater compared with an electric plinth heater?

Hydronic plinth heaters connect to your central heating and provide steady, even warmth that integrates with your boiler and heating system, making them efficient for continuous use. They're promoted as a safe alternative to traditional radiators and are ideal where you want to maximise space, such as under cabinets in kitchens, bathrooms and utility rooms. If you already use central heating, a hydronic unit will behave like another radiator outlet but in a low-profile plinth form.

Which grille finish should I choose to match my kitchen or bathroom?

The range includes brushed steel and stainless steel grille options; brushed steel tends to lend a softer, contemporary look that pairs well with timber or matt cabinetry, while polished stainless reads cleaner and suits modern, stainless-steel appliance schemes. brushed steel looks warm beneath painted shaker doors, whereas stainless steel complements a modern handleless kitchen or chrome tapware.

How do I decide between Smith's and Myson models?

Look at the specific size, heat output and grille finish you need first, Smith's offers several Space Saver models in a variety of widths and finishes, while Myson's Kickspace range covers 500mm, 600mm and 800mm widths and sits at a slightly higher price point. Both brands have strong customer ratings on the range, so base your choice on the dimensions and kW you require and the grille style that best matches your room.