Hi there. I am going to look at my parents furnace on the weekend as they told me there bill has gone up 100 bucks a month. I suggested to call the utility company as there is likely something wrong with there side of things. They said to get someone in to look at the furnace and give it a "tune - up ".
Im just curious as to some things I should look into on this.
I mostly just do refrigeration and work in grocery stores so dont ever work on furnaces and gas fired appliances. I have my ticket as its part of the apprenticeship here so I am qualified to work on it, but with that said I dont have much hands on in this particular area.
I am going to borrow my buddies gas manometer and check the pressures at the appliances and such and check filter and heat exchanger and such but just wondering if theres more I can look into?
Any replies will be thanked in advance!