Crowne head - keep or replace?

[Tucson Sailor]

I purchased a 1990 Carver 34 with a Crown (Raritan) electric head. Although it seems tobe in good shape, I think it needs a rebuild. Someone told me it consumes a lot of power. What are your thoughts about this old unit?
Thanks,
Tim
P.s.: a back surgery that went awry forced me to sell my Cataline 30 MKIII.