Quick Load Guide: OSRS’ Lowest effort Thermy

There are many ways to kill OSRS’ Thermy but this is the lowest effort method because of the afk time, click intensity when not afk, and the no eyes on screen. Even though there are many ways and setups to kill Thermy or the Thermonuclear Smoke Devil, for Old School RuneScape players like me and you – I suppose since you’re here – who love AFK or low effort methods, this is by far the best and lowest effort method.
The drawback is that it is very specific and sadly there are no real alternatives for lower level accounts or for accounts that don’t have access to specifically this gear. But since Thermy is a high level Slayer boss, you might as well have access to this. If you have the gear, but not the stats yet you might wanna check this AFK combat training method first.

You might like

Quick Load Guide: How to afk the Nightmare Zone in OSRS

AFKing the Nightmare Zone can be an easy task once you find out step by step how to do it and what are the key advantages of doing it…

Gear Setup for Lowest Effort Thermy

Slayer helm (i)
Sanguinesti Staff
Ancestral Robe top
Ancestral Robe bottom
Eternal boots
Magus ring
Ancient Wyvern Shield
Rada’s Blessing 4
Occult Necklace
Tormented Bracelet

Inventory Setup for Lowest Effort Thermy

Imbued heart
Prayer pots or Super Restores
Super defence
Holy Wrench
Rune pouch with Law, Mist, Lava and nature runes
Food

Quick Prayer Setup for Lowest Effort Thermy

Protect item
Redemption
Augury

Lowest Effort Thermy AFK time

With this gear and inventory setup you will get an afk time of 20 to 40 seconds with minimal clicking in between, making it the lowest effort method. It is not much, but 3 clicks later, you will be able to return to reading, watching or working, or whatever you are doing at your PC or on your mobile while killing Thermy. For example, I’ve written half of this article and prepped the images for it while killing Thermy with this lowest effort method.

Sound on!

Even though this is the lowest effort method you can still die if you don’t react quickly enough. It is very important to have the sound on while you kill Thermy and your mouse on hand, but another reason why this is low effort is because you don’t need your eyes on screen, for the most part.

Lowest effort Thermy overview

Use the BKP fairy ring and enter Thermy’s lair then hop till you find an empty world. Activate the imbued heart, sip a super defence potion or divine super defence potion, then activate Augury and click on Thermy to attack him. Enjoy the AFK time till he dies. In between kills, whenever your health is above 40 HP eat a piece of food and keep your health in between 40 and 60HP. Thermy often drops food, so you will rarely run out of supply, especially that the Sanguinesti staff will keep your HP up for the most part.

Once your health drops under 40HP activate your quick prayer. Have your inventory tab open and whenever you hear the redemption sound simply sip a prayer or super restore and click to activate the quick prayer, then go back to afk. Depending on how much food Thermy drops, you might cycle between using food and redemption several times, but you should be able to kill around 80 Thermy in a single trip before needing to restock. Depending on the food and prayer potion drops you might even be able to complete a full smoke devil task with this lowest effort method in a single trip.

After each kill grab your loot and use the high alchemy spell until Thermy respawns if needed.

Comparison with other Thermy methods

The redemption method doesn’t rely on anything else to restore your HP and this is why you will run through your prayers or restores much faster and need to click more often.
The freezing method will have you swap between weapons and go to a specific position so you’ll spend more time in between the kills, especially if your freezing spell finishes before you manage to kill him. It is more click intensive so it takes more effort and attention, especially visual attention, so it is more effort, even though you do get around 20 seconds (19.2 seconds while he’s freezed) of afk in between the more click intensive bursts.

The POH method, melee method, and walk under method all have their advantages, but none of them comes close to the level of low effort of this. Using thralls is possible with an explorer ring for high alchemy, but it will make the method more click intensive and make inventory management slightly more difficult.