Our oil burner is a 40 year old tankless hot water furnace. We have a 2600 square foot home.
We turn the furnace off to save on heating water ( and wasting oil) When the furnace is on it is on a timer to run twice a day.
This is getting very tiresome, esp. when I need to do dishes and take showers, or just need hot water. We are considering a Renni for the upstairs bathrooms, but this will not resolve the issue with kitchen and down stairs bathroom, unless we install one at each of this points. We did consider just putting one in the cellar for all locations, but then you have the cold water still in the pipes. Not sure what to do. Also looking for a suggestion on a effecient Oil Burner.