furnace no relation improvement
History
Late 20th century
Household
In 1911, architect and author Louis. H. Gibson defined modern conveniences as "those arrangements and appliances which make it possible for people to live comfort ably in a larger house, without seriously increasing the cares which they had in a smaller one". The supposition is that at that time if a family lived in a smaller home, they would have less furniture, appliances and other goods to take care of, and as a result the family's lifestyle and housekeeping would be relatively easy.  If, on the other hand, a family moved into a larger home the increase area and furnishings would be much more difficult to manage without labor-saving devices.: 21–23 Examples of modern conveniences at that time included:: 23–25 
Kitchen sinks with tap water hot and cold running water and wastewater drainage
The addition of bathrooms as separate rooms with sinks and toilets, also with waste water and sewage drainage
A furnace, also identified as a significant cost savings
Closets in bedrooms, bathrooms, hallway for linen, broom closets
Gas lighting, stoves and fireplaces, where gas was available
Icebox or refrigerator
no relation