I'm currently using the Farther Heat mod, which allows heat pipes to affect entities 3 tiles away from them. However, Underground Heat Pipes only affect entities 1 tile away, creating a weird situation where I need to have at least 1 Vanilla heat pipe between them. Would it be possible to include a Heat Radius mod setting so that we can tweak the Underground Heat Pipes to match?

if i could have helped it there wouldn't even be any heating in between the undergrounds, but the engine limitation is that heat pipes must always heat their own tiles, this mod wasn't intended as an invisible heat pipe mod but merely a way to transfer the heat to another heat pipe when there was something in the way.

I have added support for the endpoints to have an increased heating range when that mod is installed in 2.2.0, there won't be a boost to the in-between.

I have added support for the endpoints to have an increased heating range when that mod is installed in 2.2.0, there won't be a boost to the in-between.

That's perfectly fine. I didn't even know that the underground pipes heated the area in-between :) So thank you for that.