So there are four people in this house. I'll refer to other three as A,B,C.

A is rarely home and has no preference.

B likes it warm all the time. 

C likes it cold at night, warm in mornings

D(myself) likes it cold all the time.

The central heater is frequently turned to 70 degrees. It says 70 but it actually goes up to like 72 so that it doesn't have to run constantly. 

It's too hot for me, period. I turn it down to 68 whenever I see or hear it running. Every time. Over 68 prevents me from sleeping when B turns it on at night, and when C turns it on in the morning while preparing for their day (often at 5am) it wakes me up. 

Our house is small. There is no shared area beyond hallway, kitchen and one bathroom shared between myself and B. The main vent is very loud. The house is also poorly insulated, so there's no way to stop my room from warming up whenever they turn on the heater - except to chuck open my window like halfway. Closing my personal vent doesn't help. 

The rub is that we are allowed to use personal space heaters. My philosophy, and the philosophy I wish they would embrace, is that personal liberty is fine until it interferes with someone else's personal liberty. I feel bad being so sensitive to the freaking whirlwind dervish of this heater blaring. But I need my sleep and my perspective is that there is no legitimate reason to interfere with my sleep just because B or C wants to be warm while taking a poop at night or making coffee in the morning. 

They have no right to use central heating, thereby subjecting *everyone* to their whims, when we can just use personal space heaters in our rooms and suffer the cold in the bathroom and kitchen. And let's be clear - this is northern California. "Cold" is 62 degrees F. We have no living room, no one stays in the kitchen longer than a few minutes. C, the main culprit in warming the house in the morning, even has their own private bathroom that they can keep warm with space heaters.

Am I the asshole and acting like a draconian tyrant by shutting down their usage of central heating since it f*cks with my life in a major way?