(5 customer reviews)

Original price was: £103.99.Current price is: £88.39. inc VAT

FREE Delivery by Tuesday, 28 May, 2024.

The Thermo King compost bin uses Thermolene technology to insulate your compost, speeding up the process and producing good quality compost faster. Your composter will arrive flat packed for quick assembly and is manufactured from 100% recycled plastic.

This item: GARANTIA® 600L THERMO-KING composter
Original price was: £103.99.Current price is: £88.39. inc VAT
Original price was: £103.99.Current price is: £88.39. inc VAT
Original price was: £31.44.Current price is: £22.99. inc VAT
Do I need a soil fence? The soil fence prevents any rodents or small animals from burrowing under and into the composter. A soil fence isn’t needed but if you have any rodents or other small animals in your area then it might be something you will need to consider.
Length: 800mm - Width: 800mm - Height: 1040mm
Product price
inc VAT
Additional options total:
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Order total:
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SKU: 626002 Brand:


  • Thermolene promotes fast composting due to optimal aeration system and thermo walls
  • Easier filling with two large filling hatches
  • Cover lock to regulate air circulation
  • Easy assembly without tools
  • Made from 100% recycled material (PP)
> Product Manual

Free Delivery

  • Delivery lead time is 4-6 working days on all orders however for our large underground rainwater tanks please allow 7-14 days.
  • Price is included to mainland UK, quotations for highlands and islands available on request.
  • We use a number of different hauliers and also deliver on our own vehicles.  We try to provide a tracking number for all orders but can accept customer enquiries by phone and email if you don’t receive a tracking number.
  • Decorative water butt orders will be palletised curbside deliveries.  The customer being home to accept the delivery is advised but not essential.


You have 30 calendar days to return an item from the date you received it. To be eligible for a return:

  • Your item must be unused and in the same condition that you received it.
  • Your item must be in the original packaging.
  • Your item needs to have a receipt or proof of purchase.


Once we receive your item, we will inspect it and notify you that we have received your returned item. We will immediately notify you of the status of your refund after inspecting the item. If your return is approved, we will initiate a refund to your credit card (or original method of

You will receive the credit within a certain amount of days, depending on your card issuer’s policies.

Additional information

Weight 16.8 kg
Dimensions Length 800 mm x Width 800 mm x Height 1040 mm
Colour/ Material



3 Years


600 Litres

5 reviews for GARANTIA® 600L THERMO-KING composter

  1. I. Johnson

    Solid packing and so easy to assemble which was good as I got as a Christmas present for my grandma. Looks great in her garden too.

  2. Paul Reid

    Just got this. I have rated it four stars because 1) arrived quickly, 2) relatively straightforward to assemble but does need to be done at or close to site where it will be used as it is not easy to move without falling apart 3) once assembled it is robust and easy to use.
    I haven’t awarded 5 stars as I have only just started to add material to compostor and therefore I cannot assess the quality of the compost.

  3. ChrisRW

    All assembled, partially filled from old rotten wooden compost bin and well pleased.

  4. Chris RW

    All set up and ready to go. No problems just waiting to get it composting.

  5. Linda Stevens

    Well packaged, easy to assemble and very reasonably priced compared to the rest of the market.

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How do composters work?

Composters, also known as compost bins work through heat, moisture, and air; where the bacteria breaks down the carbons 0f garden and food waste. Compost is very good for plants and can encourage growth, so it is no surprise to see more and more people making their own compost rather than store-bought packs.

Simply put the food waste or garden waste (lawn trimmings etc) into the composter, and assuming the material is biodegradable, eventually, over time this will break down to create a nutrient-rich mulch. This can then be put onto plants and borders, to help encourage growth.

What size compost bins do you sell?

Garden Tech stocks 280, 300, 400, 450, 600, 900, and 1000 litre composters.

How do I remove the compost from my composter?

Our compost bins have a small, easy access door at the bottom to allow you to collect the compost.

What is a soil fence?

A soil fence composter barrier will prevent rodents and burrowing creatures from getting into your composter while allowing worms and micro organises to pass freely between your compost and the soil.

What size compost bin do I need?

The size of the composter that you require is determined by the volume of vegetable material to be composted. A 300-litre bin is ideal for beginners, but large families and avid gardeners may wish to go bigger.

Do you have replacement lids?

Garden Tech can offer replacement lids, if requested.

How many compost bins do I need?

Many customers prefer having two compost bins as it also gives you a place to store finished compost to use in the garden as and when needed.

What size should a compost bin be?

In general, bigger is better, but 3 feet by 3 feet (1000mm x 1000m) is a manageable size for most gardeners. The compost bin(s) should be placed in full sun, if possible – shade will of course reduce the temperature and slow down the composting process.

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