Will a concord high efficiency gas furnace 75 000 BTU heat a three bedroom bungalow with a full basement?

Answer 1

Many factors can influence the correct answer. How cold does it get where you are? How much insulation do you have? How air tight are the doors and windows? How air tight is the entire house? How good is the glass? How big is the house? Three bedrooms covers a very wide range of square foot sizes.

If the answers show that everything is up to snuff, this should be a good furnace size. Unless we know a lot more, you will only get guesses and generic answers.