The cheapest perfect breeder ever.
Water cooling, 25 blocks (no redstone input, 9350 heat limit)
Water cooling, 24 blocks (redstone input available, add coolant cell, 9265 heat limit)
Heat limit while heating up - 9180
Over 9000 heat.
Heat balance ±0
Room for 350 more heat, "yes" to safe breeders!
Zero additional chambers and only 2 HD's.
To reach 9000 heat just put an uranium cell into bottom right corner and wait 900 ticks.
http://test.vendaria.net/index…XXXXXXXXXXXXXXXXXXXXXXXXX
Upd: Now legit!
[spoiler]
T°
Core
The building