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You improved upon the original idea I saw last year using lard in a can with a lit candle in the center w a small to medium sized terracotta pot over the top to produce ambient heat. Using a larger terracotta pot w hole in bottom to circulate heat internally over a smaller pot, with a stream of hot air out the drain hole of the larger overlying pot...Brilliant! Thank you for sharing this! Kriss

This is great when the electricity will go out. 👍

I watched all the videos on candle heaters and this one was the best. Thanks.

What a great little trick to warm the greenhouse. Thank you for sharing.😊

Love this simple method. I was thinking using old storage heater bricks to add to the heat retention. And a cup of tea of course.

Thank you for this, just what I was looking for. I have a small garden and a courtyard garden at the rear of the house with a 10’ x 8’ greenhouse. I’m late planting my seeds this year (having chemo atm) but it’s still too cold at night so they’re taking their time to come through even though I’ve put a bit of bubble wrap up. New subscriber

Nice video Ray! And yes this heater works very well, specially for small places!

Rather than 5 or 10 hour tea-lights, melt a packet of Trex vegetable oil and pour it into a large pickle jar with a bit of string as a wick.. It should burn for 4 days and cost about a pound. You can bolt the pots together for convenience and with the added heat from the hot steel.. I use 2 in my draughty 15 foot greenhouse/shed, and they keep the frost off.

Nice video. Thanks for the tip. Keep them coming Ray.

Simple and effective. Thankyou.

This is a really good video, thanks for sharing it with us.

good idea ray

Good video thanks again ray 🤝

That's a brilliant idea Ray

Thank you this looks simple and easy for me. No fancy fans this is wireless! 😊

Great update Ray all the best Michael

Looks super easy to make.

Thank you for explaining how this works

Thank you for this. I have bought my pots and 8hr t.lights in France where I live.

Brilliant. Thank you.

Excellent, thank you.

Excellent. Thanks.

This is how iv heated my house all winter my bills for heating have been below 50 quid a month since september

Awesome thanks

Great idea will try it out 👍😎

Great tips as always ray :)

and a cupcake tea. Thanks for the video.

Great idea. Going to give it a try because the heater I am currently using made our electric bill $324 (U.S. dollars) this month. It’s normally under $200. I have a GStove but my greenhouse is plastic and I can’t ventilate it properly nor feed it with wood in the middle of the night. I’m excited to give this a go. Thank You

Thanks. Very helpful.🌹

Thank you Ray. This looks so much easier than other methods. I think even a writer like me could it...

Wow ,Ray that's fantastic,I used £98.00 on paraffin last year heating my 6x8 greenhouse,Really expensive tomatoes eh🤣,I am going to use this idea for 2023 ,wish I'd seen your video sooner.Thanks Buddy. South East. B.

Lk 5 Nice sharing

Make a 100 hour candle, couple of packets of lard and a candle. Plenty of how to videos on here, just like your tea lights but work for a lot longer

Great

nice om nice one thanks

Great ideas you come away with Ray, keep up the good work 👍

Love your video the heater is so easy to put together👍 im using a smaller pot for the top hope it has the same effect👏

Everybody makes these but no one has posted a video experiment with one actually working in the winter.

Thank you! I am going to try this in my greenhouse this winter :)

Great for power cut sir 🎅🏻

Great video Ray. Always useful to keep the greenhouse above freezing. Ive nominated you for the 40 question challenge if you have time to do it. No worries if you don't. Take care Becky Take care

If any use to anyone:- I work in my spare bedroom 9-5 Mon-Sat the room is 6ft x 8ft. I made a long life candle from 3 blocks of Tesco Baking Block (similar to Trex). I melted the blocks in the microwave and added 2 wicks (200 pk from Amazon around £2.99). Over the lit candle I put a 16cm terracotta plant pot supported by two bricks (to allow airflow to the candle). I put the homemade mini heater under my desk. Using a 60cm x 60cm piece of random cardboard (from an Amazon parcel) I neatly wrapped tin foil around it and stuck it to the underneath of my desk to deflect/increase the circulation of the heat. I light the candle at 8am to allow it to heat up and it increases the room temperature by 3c-4c. The candle last 6 days. I have two back up candles. See Crisco candle videos on RU-vid for examples. Please note I have tested using two terracotta pots as advised in most videos and it does not work as good as one pot. I also tested a 25cm pot and a 22cm pot separately but the 16cm heated up the best. I haven't covered the hole in the pot as recommended in most videos and the pot still gets too hot to touch. The candle does not smell at all although you can add candle scent if you wish. I also tested with a carbon monoxide detecter and it registered zero over a continuous 50 hour test. This will only work in a small area like a small spare bedroom or small greenhouse. Canadians use this method in their greenhouses during their winters. Plant pot was around £2 from B&Q. Tesco banking block £0.95 each. 200 10cm wicks around £2.99 from Amazon. When I melt the baking blocks I use a pencil to wrap the top of the wicks around and rest it on the random pot jar I got from Home Bargins sale for £1 each. This ensures the wicks are straight whilst the candle hardens in the fridge over night. It's not much heat but it saves me from putting on the central heating for just the one room. There are dozens of these mini heaters for sale on eBay for £25. Building your own is much cheaper. Best of luck.

Oh that looks like fun I may have to give it a try with my cold poly tunnel 😂😂As always Ray stay safe and stay gardening 🧑‍🌾🇨🇦🌶🍆✌️🥕🥬☮️

Hey Ray, thanks for the simple instruction. With the energy bills going up 3 times this year, I think it might a method worth giving a go. I think instead of using these candles, I might want to try using a gel burner instead.

When you cover the hole on the small pot two candle blow out.

Gona give it a go just need to buy another bigger terracotta pot

Do you need to open the window or door slightly

Hello! Thank you for this video. Could I just ask you if this would be OK to use in a polycarbonate greenhouse and would it be enough to protect from frosts? Thank you, I thoroughly enjoyed this video! I stumbled across you and now I'll have to watch all your videos hahahah

Ray, have you worked out what the cost per Kilowatt hour of using this method is?

What are the dimensions sizes of the pots? Thank you for this video.

The pots will set on fire eventually if you do not clean them regularly. You're just turning them into flammable pots because the evaporated wax will stick on them.

stick a stove fan on top of it ...just thinking great idea

There is a much easier way, Buy a terracotta saucer place the tea lights in the saucer and put the pot over the top, The tea lights will still stay lit by pulling the oxygen through the top as opposed to the bottom, to switch off the heat just place your coin over the top which will starve the oxygen and the flame will go out and its much more cosmetically pleasing to the eye and above all safer.

Just wondering why you chose not use a eyebolt through the middle of terracotta pots, to contain more heat?

Really great idea ray, do you think the heat would be ok in a small pvc greenhouse ?? Thanks for sharing this ray stay safe David 👍👍

cup o tea is essential

Hi Ray, I've only just returned to RU-vid. Its been a long while! I've missed you! Superb demonstration! Love the camera shot of the inside! How much does it change the ambient temperature in your greenhouse would you say? Just curious. I hope you have a great day, my friend!💚

i skimmed the comments and didn't see any info on this. This looks cool, but what about data? Do you have any actual temps for a greenhouse vs outside while running this?

i used asdas 90 hour candles last year. somebody must have told them so they put up the price of candles to £2. 50 each..................brian

Do you actually know that the heat will be stored for a longer period of time with this method, compared to just have open candles? :)

Why is there no brick in the front? Would it stuff out the flame?

RU-vid must have been taken you on board, bro' - more adverts prior to your vids. Your candle-based greenhouse heater. Before we moved to our current (and final move) I bought a couple of paraffin heaters for less than £10 total. Considering the cost of paraffin, how do you rate the economy of paraffin against candles? Those cost you a fair bit! Every good wish, bro' - Paul

And when you run out of candles???

The amount of heat available is exactly the same without pots

I made a video about this almost 10 years ago now and people are still using my idea to make there own videos! STILL

Nothing new edwardian and victoriana gardeners used this old method I have used it in a lorry at night

the pots are very unnessecary....ever heard of thermodynamics

this has been scientifically proven to not work

Very poor audio

Can he talk any slower????