Best Plinth Heater for Kitchens: 2025 Expert Review
DR Joinery
Expert Joiner & Kitchen Fitter
In many of the older properties we renovate in York, wall space is absolute gold dust. Homeowners often face a difficult choice: keep a traditional radiator and lose a potential bank of drawers, or remove it and risk a freezing cold kitchen floor.
This is where plinth heaters (or kickspace heaters) come into their own. By tucking the heating element into the 'dead space' under your cabinets, you reclaim your walls for storage whilst keeping the room comfortable. Ideally suited for stone or tiled floors that hold the chill, they are a staple in modern kitchen design.
In this review, I'll compare three units I've encountered on site: a simple plug-and-play electric fan, a robust central heating model for efficiency, and a smart programmable option for total control.
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Specs vs. The Real World
The Spec: "Heat Output Claims"
"Manufacturers often claim these small boxes can heat massive open-plan spaces instantly."
Plinth heaters are directional fans. They are excellent for warming your feet whilst washing up and boosting the temperature, but in a large, high-ceilinged room, they work best as a secondary heat source or for 'zoning' the kitchen area.
The Spec: "Hydronic vs Electric"
"Both heat up the room effectively."
Hydronic (central heating) models are far cheaper to run but require complex plumbing installation. Electric models are easier to fit (just a fused spur) but cost significantly more to run per hour. Choose based on your usage habits.
My Top 3 Recommendations
Three options to cover different needs and budgets
SIA PLH2 2kW Black Slimline Electric Built-in Kitchen Plinth Space Heater
SIA
This SIA model is a straightforward, no-nonsense electric heater. It is perfect if you have removed a radiator to make space for a larder unit and need a quick, easy-to-install heat source to top up the temperature on cold mornings.
The Good
- Excellent price point for a functional heater
- Simple electric installation (no plumbing required)
- Slimline design fits standard plinths easily
The Bad
- Fan noise can be noticeable at full power
- Higher running costs compared to central heating models
Installer Tip:
When cutting the aperture in your plinth, apply masking tape over the area before marking and cutting. This stops the laminate facing from chipping and ensures a crisp, professional edge around the grille.
Priced at £73.99 at the time of writing
Check Price on AmazonBidex Diamond 900 Central Heating Kickspace Kitchen Plinth Heater
Bidex
For a primary heat source, I always favour a hydronic unit like this Bidex 900. It plumbs directly into your central heating system, meaning it activates automatically with your boiler and costs far less to run than an electric element.
The Good
- Much cheaper running costs (uses gas boiler)
- High heat output suitable for larger spaces (up to 40sq m claimed)
- Automatic operation via internal water temperature sensor
The Bad
- Requires plumbing expertise to install
- Only heats when your central heating is on (unless boiler has summer loop)
Installer Tip:
Ensure you install the included isolating valves on the pipework. In five years, if the fan needs cleaning or servicing, you will be thankful you can isolate the unit without draining the entire heating system.
Priced at £155.00 at the time of writing
Check Price on AmazonBidex Diamond 1.9kw Electric Kitchen Plinth Heater with 7 Day Timer & Room Thermostat
Bidex
This unit solves the biggest issue with electric heaters: wasted energy. With a dedicated thermostat and 7-day timer, you can program it to warm the floor just before breakfast, rather than relying on manual switching or heating an empty room.
The Good
- Precise temperature control saves electricity
- Fits under a standard 500mm wide cabinet
- Lot 20 Compliant for energy efficiency
The Bad
- Price is higher than standard electric blowers
- Controller placement needs planning
Installer Tip:
This unit requires airflow. Do not squash it tightly against the back wall or insulate heavily around the intake. Ensure the thermostat is placed in a neutral position, away from ovens or direct sunlight, to get an accurate reading.
Priced at £105.00 at the time of writing
Check Price on AmazonFrequently Asked Questions
Can a plinth heater replace a main radiator?
Are plinth heaters noisy?
Which is better: electric or central heating plinth heaters?
Do I need a professional to install a plinth heater?
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