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What are the pros and cons of fan assisted radiators?
Updated 08/26
By: Imogen Beech
Reviewed: Alex Peters
Fan assisted radiators can deliver up to three times more heat output than a conventional radiator of the same size. But is that extra performance worth the higher price tag? Here's a straightforward look at the pros and cons.
What a fan assisted radiator actually is
Whether it's worth the higher upfront cost
How they compare to standard radiators
Why they pair so well with heat pumps
How much they cost to buy and install
Whether they're the right choice for your home
What are fan assisted radiators?
Fan assisted radiators - also known as hydronic fan convectors - are plumbed into your wet central heating system just like a standard radiator. The difference is a built-in electric fan, which draws in cooler air and passes it over the heat exchanger.
This spreads heat through the room quickly and evenly, rather than leaving pockets of warm air near the radiator itself.
Most are wall-mounted, though kitchen plinth heaters - a compact version that tucks under your kitchen units - are also popular for saving wall space.
Because fan assisted radiators hold far less water than a standard radiator of the same output, they heat up and cool down much faster too.
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Fan assisted radiator pros
Performance
The built-in fan increases convection by up to 80%, which is why fan assisted radiators can produce up to three times the heat output of a standard radiator the same size.
Compact
They hold less water than conventional radiators, making them smaller and lighter - useful if you're trying to maximise space in your home. Kitchen plinth heaters take this further by hiding away beneath your units entirely.
Quiet
Despite the fan, these units are designed to run silently, most only kicking in when extra heat output is needed rather than running constantly.
Effective at low temperatures
Fan assisted radiators work well even at lower flow temperatures, which makes them a strong match for heat pumps - these tend to run cooler than gas boilers, and industry heat emitter guidance specifically highlights fan-assisted radiators as well suited to heat pump systems for this reason.
Low running costs
Since they use your existing heating source - boiler or heat pump - running costs stay reasonable. The fan itself only adds a small amount to your electricity use when it's switched on.
Fan assisted radiator cons
Higher upfront cost
The main downside is price. On average, a fan-assisted radiator costs between £450 - £675 for supply and installation combined, more than you'd typically pay for a standard panel radiator. Our fan assisted radiators cost guide breaks this down further by type.
Needs regular maintenance
Filters need cleaning roughly every few weeks. It's a quick job, but one you simply don't have with a standard radiator.
Not always straightforward with heat pumps
If you're pairing fan assisted radiators with a heat pump, your installer will need to check the existing pipework can support them - older microbore pipework, in particular, can cause issues and may need upgrading first.
If you're planning a wider heat pump upgrade alongside new radiators, it's worth reading about heat pump installation costs, or speaking to a heating engineer about the full system design.
Fan assisted radiators vs standard radiators
Fan assisted radiator | Standard radiator | |
|---|---|---|
Heat output for size | Up to 3x higher | Standard |
Water content | Low | Higher |
Heat-up speed | Fast | Slower |
Upfront cost | Higher | Lower |
Maintenance | Filter cleaning needed | Minimal |
Best suited to | Small rooms, heat pump systems, space-limited spaces | Most standard heating setups |
Radiator buying guide: Helping you to choose the right radiator for your home
We look at radiator types, fuel sources, and the key considerations to bear in mind when choosing the best radiators for your home.
Checklist: is a fan assisted radiator right for you?
Fan assisted radiator checklist
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FAQs
Yes, they can deliver up to three times more heat output than a conventional radiator of the same size, thanks to the built-in fan increasing convection.
Generally yes - they distribute heat evenly around a room and help avoid the cold spots that standard radiators can leave behind.
Both use a fan to move air over a heating element, but a fan heater is a standalone electric appliance, while a hydronic fan convector is plumbed into your central heating system and only needs a small amount of electricity to run the fan.
No - fan heaters run entirely on electricity and tend to cost more to run than a fan assisted radiator, which uses your existing heating source and only draws electricity for the fan.
Not particularly - since they rely on your existing boiler or heat pump, running costs are broadly similar to a standard radiator, plus a small amount for the fan.
Most can, though it's worth checking with an installer, particularly if you have an older heating system or unusual pipework.
Yes, since the fan runs on electricity, you'll need a nearby power source, which your installer can factor into the quote.
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