Either go for dmg dealing heaters or mass heaters.
Mass heaters use savagery, not dessolation, since they are alredy energy dependant.
1 cooling and 1 heatengine works against phis builds and energy builds, sucks against some other heaters.
The other way to go is downblaze with supreme cannon, but there is that peoblem witb range 1-3.
Unfortunatly there are no non-premium heat wepons that can cover that.
If you are lucky to land an abomination, or redocking, you are in buissiness… if not, only the repulser will help a bit… not much since it just pushes stuff.
Another way is to use the phis grenade thing( sidewepon), it packs dmg but no heat dmg.
It will also fit a configuration of 2 corupts, 1 savagery, with 1 heat engine, 1 cooling, 3 energy engi ns, 3 epic hp plates.
Use nemo drone.
Any CL build will lose to a 2200+hp phis build with 220 cooling, and a range 6 wepon.
Heat suffers the most if lacking premium items.
You can use this as a slight guide to what you can build and what you will face:
Hope this helps.