Whitegoods Help article

White Knight gas tumble dryer

💡
Quick Answer

Gas tumble dryers offer lower running costs and faster drying times than standard electric dryers, but require a gas supply connection by a Gas Safe registered engineer, a gas supply point close to the installation location, and – critically – a Gas Safe registered engineer for any future repairs. This last point is a significant practical limitation: finding engineers qualified and willing to repair gas tumble dryers out of warranty can be very difficult.

Gas tumble dryers are a niche product – the vast majority of tumble dryers sold in the UK are electric. Understanding the genuine advantages and the practical limitations before purchasing is essential.

How Gas Tumble Dryers Work

Gas tumble dryers use a gas burner rather than an electric heating element to heat the air that dries the laundry. The drum mechanism, controls, and motor are still electric. A gas supply is needed in addition to an electrical connection. The dryer must be installed and connected by a Gas Safe registered engineer.

✅ Advantages of gas tumble dryers

  • Lower running costs than standard electric resistance dryers, particularly when gas unit prices are lower than electricity per equivalent unit of heat
  • Faster drying times – gas generates heat more quickly and at higher sustained levels than most electric elements
  • Lower carbon emissions than standard electric dryers, depending on the source of electricity at the time of use

❌ Disadvantages and practical limitations

  • Must be installed and connected by a Gas Safe registered engineer – this is a legal requirement, not optional
  • Requires a gas supply point within practical reach of the installation location – most utility rooms do not have one
  • Installation cost is a significant upfront expense that takes time to recoup through reduced running costs
  • Gas Safe registered appliance engineers are rare – most appliance engineers are not qualified to work on gas tumble dryers. Finding qualified repair cover out of warranty is a genuine and documented problem
  • Energy price ratios between gas and electricity fluctuate – the running cost advantage changes as prices change

The Repair Problem

The most significant practical concern with a gas tumble dryer is what happens when it develops a fault. Any engineer working on the gas components of the appliance must be Gas Safe registered. Most domestic appliance engineers are not – they work on electrical appliances only and are not trained or certified for gas work.

⚠️
Out-of-warranty repair can be very difficult to arrange

The pool of engineers both Gas Safe registered and experienced in gas tumble dryer repair is very small. Even authorised service agents for tumble dryer brands have been known not to repair gas models out of warranty. If a gas tumble dryer develops a fault after the guarantee period, finding qualified repair is a genuine challenge that can leave the machine unusable. Factor this into the purchase decision.

Gas vs Heat Pump: A Better Comparison

When gas tumble dryers were first marketed, the comparison was primarily against standard electric resistance dryers – which are genuinely much less efficient. This comparison is accurate but increasingly less relevant as heat pump tumble dryers have become widely available.

Type Running cost Drying time Installation Repair availability
Standard electric (resistance) Highest Fast Standard – plug in Excellent
Gas Lower than electric (varies with energy prices) Fastest Gas Safe engineer required Very limited
Heat pump electric Lowest electricity consumption Significantly slower Standard – plug in Good and improving

Heat pump dryers use significantly less electricity than standard electric dryers but take longer to dry a load – typically 30 to 50% longer. Gas dryers dry quickly and cheaply but come with the installation and repair availability constraints described above. For most households, a heat pump dryer offers the best balance of running cost, convenience, and practical repairability. See our guide on the most energy efficient tumble dryers for a full comparison.


Frequently Asked Questions

Are gas tumble dryers cheaper to run than electric?

Typically yes, compared to standard electric resistance dryers – the gas burner generates heat more cheaply per unit of energy output than an electric element when gas prices are lower than the equivalent electricity cost per unit of heat. However, this advantage narrows when gas prices rise relative to electricity, and heat pump electric dryers now achieve comparable or lower running costs without the gas supply requirement. The exact cost advantage depends on current gas and electricity unit prices.

Do I need a Gas Safe engineer to install a gas tumble dryer?

Yes – this is a legal requirement. Connection of any gas appliance to the gas supply must be carried out by a Gas Safe registered engineer. Installation typically costs in the region of £100 to £200 depending on the complexity of the gas supply routing required. The machine also requires a standard electrical connection for the drum motor and controls.

Who can repair a gas tumble dryer?

Any repair involving the gas system must be carried out by a Gas Safe registered engineer. Most domestic appliance engineers are not Gas Safe registered and cannot legally work on gas appliances. The pool of engineers qualified and experienced to repair gas tumble dryers is very small, and finding repair cover out of warranty has proved difficult for many owners. This is one of the most significant practical considerations before purchasing a gas tumble dryer.

Last reviewed: April 2026. The gas tumble dryer market is a niche segment. Availability of specific models and brands changes over time – verify current product availability with retailers before purchasing. The running cost comparison between gas and electricity depends on current energy tariffs.

Discussion

50 Comments

Grouped into 36 comment threads.

Rob Demytruk 0 replies I am a retired gas engineer, and have had a white Knight gas tumble dryer for over 25 years and is still operating to this day, over the years it's reqired a few spares IE drum bearing and new belt and a reconed motor. I can't sing their praises eneough

I am a retired gas engineer, and have had a white Knight gas tumble dryer for over 25 years and is still operating to this day, over the years it’s reqired a few spares IE drum bearing and new belt and a reconed motor. I can’t sing their praises eneough

Katrina 3 replies Just trying to get another gas White Knight dryer. Who supplies them. Just a maze online that lead you to electric dryers. Thanks for any help.

Just trying to get another gas White Knight dryer. Who supplies them. Just a maze online that lead you to electric dryers. Thanks for any help.

Andy Trigg (Whitegoodshelp)

In all honesty I wouldn’t buy one if you could find one. It will cost a lot to get it installed, and you will struggle to get anyone to repair it in the future. As I mention in my article, even when White Knight were selling them they wouldn’t repair one after its guarantee and couldn’t even advise me of anyone else who could.

If running costs are the main issue, a modern heat pump dryer costs very little to run. I’ve seen them quoted at a ludicrously small amount of electricity each year. The downside is they take a long time to dry but that’s because they hardly use any energy.

Richard Burston

Bit late maybe with the answer but I am afraid you will not find one. The company shut down a few years ago and now even many of the spares are hard to come by.

Andy Trigg (Whitegoodshelp)

Many thanks Richard. It’s confusing because if you search for white night UK on google the first result is a site that looks like it could be White Knight and called white knight dryers. They and several other sites are still selling white knight appliances, but no one seems to mention White Knight dryers are no longer being made.

Terry @Tezla 1 reply There are many good reasons most commercial dryers run on gas,cost efficiency,running costs etc,the same applys to domestic gas dryers of course they need to be installed correctly,ideally with a clean gas supply & easy isolation,gas tests & certificate..the 100mm vent pipe must go out through a wall via a grille/cowl, that will not block up. not out a window or into another room ! and a carbon monoxide & smoke detector in the area is also recommended..I have a co2 extinguisher as well {just to be on the safe side} As with commercial types certain clothes can self ignite when the door is opened hot, before cool down cycle is finished,so do be patient and allow the machine to complete & cool down..please note they take air from the room not the outside like condensing boilers ,so allow for some fresh air to enter the room by a window,vent or grille to outside air,,personally i prefer mine in the garage......... They will run forever without problems no heating elements or terminals to burn out,electric costs are very small..low gas consuption The most important thing is cleaning ,they suck in lots of air @ dust which gets into the machine & burner,so find a friendly gas man with a vacuum@ blower to clean out every year & keep the lint filter clean yourself,been using these for 38 years now & did work on commercial units previously..once your set up properly ,you will not regret your purchase...

There are many good reasons most commercial dryers run on gas,cost efficiency,running costs etc,the same applys to domestic gas dryers of course they need to be installed correctly,ideally with a clean gas supply & easy isolation,gas tests & certificate..the 100mm vent pipe must go out through a wall via a grille/cowl, that will not block up. not out a window or into another room ! and a carbon monoxide & smoke detector in the area is also recommended..I have a co2 extinguisher as well {just to be on the safe side}
As with commercial types certain clothes can self ignite when the door is opened hot, before cool down cycle is finished,so do be patient and allow the machine to complete & cool down..please note they take air from the room not the outside like condensing boilers ,so allow for some fresh air to enter the room by a window,vent or grille to outside air,,personally i prefer mine in the garage………
They will run forever without problems no heating elements or terminals to burn out,electric costs are very small..low gas consuption
The most important thing is cleaning ,they suck in lots of air @ dust which gets into the machine & burner,so find a friendly gas man with a vacuum@ blower to clean out every year & keep the lint filter clean yourself,been using these for 38 years now & did work on commercial units previously..once your set up properly ,you will not regret your purchase…

Andy Trigg (Whitegoodshelp)

Likely replying to Terry @Tezla

Hi Terry. Many thanks for sharing your experience. They do sound like they would be a lot more reliable. To be fair you would need to add the annual costs of having one serviced to the running costs. I would think that would make them cost more than a modern heat pump dryer. In fact even without the regular servicing costs added a heat pump dryer may still be cheaper to run. Believe it or not Which? say that a heat pump dryer only costs £39 per year to run, based on drying three loads per week every week for a year.

It would be interesting to have the same costs worked out for a gas tumble dryer but I’m not sure anyone has. They seem to still be exceptionally rare but if you used to work on commercial ones I can imagine you have become fond of them. Having said that, running costs aren’t the only consideration. We have had 2 heat pump dryers and my wife hates them. One of the big disadvantages of them is that because they recycle warm air they take ages to dry. Ours takes 3-4 hours to dry a load of towels.

jim lynham 0 replies I wonder who repairs the tumble dryers in the laundrets? Obviously they are gas appliances because electric dryers would wipe out the profits. I've been running a White Knight dryer for over 25 years with very little trouble and great savings. I chose a gas appliance when I arrived in this country because where I come from, most people use gas dryers.

I wonder who repairs the tumble dryers in the laundrets? Obviously they are gas appliances because electric dryers would wipe out the profits. I’ve been running a White Knight dryer for over 25 years with very little trouble and great savings. I chose a gas appliance when I arrived in this country because where I come from, most people use gas dryers.

Alex 0 replies I have fitted many gas tumble dryers in the past and will be buying one for my new kitchen/extension the installation requirements are very basic openable door/window and a check of room volume and tightness test.Repair wise they can be a total pain to fault find but they are cheap to buy so personally speaking if it lasts 6/7 years I would bin it just like any other white goods parts prices are non-sensical at present we have a heat pump machine which is total junk takes hours for a load hence the advantage of gas. The gas safe qualifications are a minefield I have a few which are fairly redundant now,warm air and gas fires spring to mind.

I have fitted many gas tumble dryers in the past and will be buying one for my new kitchen/extension the installation requirements are very basic openable door/window and a check of room volume and tightness test.Repair wise they can be a total pain to fault find but they are cheap to buy so personally speaking if it lasts 6/7 years I would bin it just like any other white goods parts prices are non-sensical at present we have a heat pump machine which is total junk takes hours for a load hence the advantage of gas.
The gas safe qualifications are a minefield I have a few which are fairly redundant now,warm air and gas fires spring to mind.

mark skelding 1 reply Hi all The bayonet fitting doesn't look like a standard cooker fitting and the yellow hose is so thick. Still took me 4 months to find engineers who would install. Wish I could add a photo.

Hi all

The bayonet fitting doesn’t look like a standard cooker fitting and the yellow hose is so thick.

Still took me 4 months to find engineers who would install.

Wish I could add a photo.

Andy Trigg (Whitegoodshelp)

Likely replying to mark skelding

Hello Mark. Send me a photo using my contact link. I’m happy to use it in my article. Does nothing come up when you put your postcode in on the link? It should be a lot easier to find someone using that link.

Andy Trigg (Whitegoodshelp) 0 replies Thanks for the update Mark. I've always assumed that any gas safe engineer could install the pipework and bayonet fitting as it is all standard stuff. I wouldn't expect the gas supply and fitting to be any different from that for the gas cooker? Does the gas tumble dryer have a standard bayonet fitting? I've just spent another half an hour trying to find out more about this elusive LAU1 Certificate. It really is hard to find out anything about it. The vast majority of results are just people selling courses. Apparently the course can be completed in an afternoon and for as little as £60. So clearly it is extremely basic. However I've realised that being gas safe registered is not a simple registered or not thing. Each gas safe registered engineer is qualified to work on certain gas products. So some might be registered to only work on central heating boilers. Others may be registered to work on gas fires and central heating boilers. And others may be registered to work on gas meters, gas cookers and so on. This LAU1 certificate means gas safe engineers can work on gas domestic appliances. I just found this page where you can search for a gas safe engineer to repair or install gas tumble dryer. There is a filter where you can select gas tumble dryer. When I first entered my postcode, my local gas safe registered plumber came up first. I've used him several times for general plumbing services and repairs and servicing to my gas boiler. However, when I selected the filter to find someone to work on a gas tumble dryer, he disappeared from the listing. So it appears you are right and being gas safe registered only allows you to do certain things. So if this is the case then yes, White Knight should clarify their advice that you need a gas safe registered engineer who is also registered to install and repair domestic appliances. Having said that, when I search for such an engineer/installer using the link I just posted I received 16 results - all of whom where within 7 miles from my house. So based on that there do seem to be plenty of people who are okay to install a gas dryer. Maybe there are lots of areas where there are far fewer. I live near a major city. But presumably White Knight believe there are plenty of registered engineers available. But without more explicit advice from them most people are likely to assume that any gas safe registered engineer can install a gas dryer. Which is quite unhelpful.

Thanks for the update Mark. I’ve always assumed that any gas safe engineer could install the pipework and bayonet fitting as it is all standard stuff. I wouldn’t expect the gas supply and fitting to be any different from that for the gas cooker? Does the gas tumble dryer have a standard bayonet fitting?

I’ve just spent another half an hour trying to find out more about this elusive LAU1 Certificate. It really is hard to find out anything about it. The vast majority of results are just people selling courses. Apparently the course can be completed in an afternoon and for as little as £60. So clearly it is extremely basic.

However I’ve realised that being gas safe registered is not a simple registered or not thing. Each gas safe registered engineer is qualified to work on certain gas products. So some might be registered to only work on central heating boilers. Others may be registered to work on gas fires and central heating boilers. And others may be registered to work on gas meters, gas cookers and so on.

This LAU1 certificate means gas safe engineers can work on gas domestic appliances. I just found this page where you can search for a gas safe engineer to repair or install gas tumble dryer. There is a filter where you can select gas tumble dryer.

When I first entered my postcode, my local gas safe registered plumber came up first. I’ve used him several times for general plumbing services and repairs and servicing to my gas boiler. However, when I selected the filter to find someone to work on a gas tumble dryer, he disappeared from the listing. So it appears you are right and being gas safe registered only allows you to do certain things.

So if this is the case then yes, White Knight should clarify their advice that you need a gas safe registered engineer who is also registered to install and repair domestic appliances. Having said that, when I search for such an engineer/installer using the link I just posted I received 16 results – all of whom where within 7 miles from my house. So based on that there do seem to be plenty of people who are okay to install a gas dryer.

Maybe there are lots of areas where there are far fewer. I live near a major city. But presumably White Knight believe there are plenty of registered engineers available. But without more explicit advice from them most people are likely to assume that any gas safe registered engineer can install a gas dryer. Which is quite unhelpful.

mark skelding 0 replies Finally got drier installed. Gas safe is not enough to install these driers. Must have lau1. Went to commercial installers of launderettes. They have lau1 cert

Finally got drier installed.

Gas safe is not enough to install these driers.

Must have lau1.

Went to commercial installers of launderettes.
They have lau1 cert

Andy Trigg (Whitegoodshelp) 0 replies I would expect any gas fitter should be able to install all the pipework and bayonet fitting to supply a gas dryer. It shouldn't be any different to installing pipework for a new gas cooker or gas fire. Once the pipework is installed, any gas engineer should be able to connect a gas dryer up as it literally only involves a push and twist of the bayonet fitting and checking the condition of the hose and fixings. I can't imagine a more nice and easy job for them :) When it comes to repairing one though, that's when it seems to all fall down as even White Knight's own agents won't repair them unless they are under warranty.

I would expect any gas fitter should be able to install all the pipework and bayonet fitting to supply a gas dryer. It shouldn’t be any different to installing pipework for a new gas cooker or gas fire.

Once the pipework is installed, any gas engineer should be able to connect a gas dryer up as it literally only involves a push and twist of the bayonet fitting and checking the condition of the hose and fixings. I can’t imagine a more nice and easy job for them :)

When it comes to repairing one though, that’s when it seems to all fall down as even White Knight’s own agents won’t repair them unless they are under warranty.

Mark skelding 0 replies What would be useful is for a gas safe registered engineer to say they would happily fit them.

What would be useful is for a gas safe registered engineer to say they would happily fit them.

Leave a comment

Your email address will not be published. Required fields are marked *