DB100 Dragon Breath Heater - 100, 000 BTU - - Amazon.com

Jan 22, 2018 · What size Dragon Breath do you need? A very basic formula is 4,000 btu's per 100 sq. ft. will do the job. Keep in mind Vermont is colder than North Carolina and your building's insulation is excellent to poor. Add more or less BTUs based on geography and buildings insulation. If there's something unique about the house such as "0" insulation ...5/5(3)…