Build a simple ventilation system that circulates the hot O2 rich air from your tent to your living area to heat the house when the lights are on (do this when you're home for heat savings); and an inlet from the living area into the tent to keep the temperature there warm and to feed the plants CO2 rich air. Symbiotic.
This is an air filter housing I made to redirect the air from my attic grow room to my living area. Very easy to do, if you want to talk through it please post in my Grow Lab thread linked below. Check out the air floor on page 1, if you don't have one with your tent building one will increase yield & potency, reduce flowering time, reduce mould.