Doesn't matter how much you heat a house, it doesn't solve the condensation problem.
I'll give you an example.
My first place (built it 2007, so doubled glazed, fully insulated, sealed box), put in one heatpump (small house but also couldn't afford two). Used to get bad condensation in master bedroom as had ensuite. So two showers per night, plus all of the moisture from just sleeping equaled bad condensation. Thought i'd get a heatpump for the bedrooms. They got a lot warmer, but condensation problem was the same. Hmmm. Spoke to someone who designs HVAC on a huge scale. They said on a budget, positive pressure ventilation would solve the problem, but would introduce cold air in winter. Installed a "Drymatic" basic system, condensation was gone in days, maybe 1% of previous condensation left. The difference was night and day, the house dried right out. The only thing I had to changed was put the heatpump on timer to come on in the morning. I didn't care if it was cold after I went to bed. So spent a bit more on heating, but never had condensation again. A good budget result.