1. Hello a question about furnace. The furnace in my house has two gas valves, the one on the left always light right away; on the other hand, the one on the right doesn't! It takes a second or two longer than the left one after gas is released. And even worse, sometimes it doesn't light at all, maybe after a few tries, I had to recycle the furnace occasionally because of this.
My question is, do I have a bad/dirty gas valve? Can it be cleaned or does it need replacing?
2. Also another question about my thermostat, it's a NOVA 5+1+1 (crap I know), the temp reading is always a few degrees higher than the actual temp, I guess there's no way to adjust this?
Also our second floor is about 5 degrees warmer than the main floor, I guess this is because warmer air goes up. But is there a way to change this? maybe a huge fan somewhere along the stairs?
I apologize for asking silly questions again but for the newbie I am