Gas stove, (use burners and oven 6 days a week)
dryer, (3 loads weekly)
tankless water heater. (Dishwasher, twice a week, 15+ showers a week)
Monthly bill $22, house is 2yo.
Last month we had a full house for 13 days of 6 extra adults each taking 2 showers per day,
Dishwasher ran everyday, stove only used 5 times.
$26 with that extra gas use.
However when the tankless is in need of yearly cleaning, you will notice a definite increase in cost, of up to $10.
You need to figure out cost of installation, buying new appliances, how long you will live in the house.
Can’t give you how much less seco bill is because we added 1000 sf with this house.
__________________
Do not worry about things you can not change 
|