Oil heater maintenance. quality of oil
I have an oil air heater only, no water boiler. The heater is about 10 years old. I had nozzle and filter replaced last year and according to the service guy it has probably never been serviced the first 9 years.
1. do I really have to change the nozzle and filter every year regardless how many of gallons were used since it was serviced last time?
One of my neighbors hasn't done any maintenance on his for about 10 years now, while the other one does it every year. They used about 700 gallons last winter while I managed to use only 450 gallons since it was serviced.
I'm trying to decide if I want to jump on automatic delivery with 1-2yr service agreement or not. These companies charge about $100-150 a year for coverage, they charge extra 30cents per gallon or so for oil which they want to deliver whenever they want (not when I want), they provide some sort of a warranty which covers 100% of something... and they do free cleaning with nozzle/filter replacement. But at the same time $100 is what I'd probably pay to have it serviced anyway, so the warranty comes for free.
2. do I get the same quality oil from cash company as I would from these full service companies?
3. how does the full service company know if I added 150gallon of oil from some other company? They came out every 3 weeks last year adding 60 or gallons each time, but I asked them not to deliver any more oil in February because I planned to use heat pump. Now my tank if half full and if I decide to save some money (40c per gallon) and use cash company to fill it will my full service company find out? And if so, how? I could have been out for the month of February and\or used my electric heaters extensively