Commercial heating needs typically require a boiler or furnace that outputs a higher number of BTUs per hour than systems used for residences. Alternate Heating Systems has boilers that produce up to 1,000,000 BTUs per hour. Below are the models from our product families that particularly meet the needs of commercial operations.
Note that any of our boilers, including models with smaller BTU/hour output as well as our Outdoor Wood Furnaces and Outdoor Coal Boilers, could be used to heat a commercial space so long as they are sized appropriately for the space being heated.

Wood Boilers
Our lineup of Indoor Wood Boilers, the Wood Gun, burns 66% less wood than a traditional wood furnace. Utilizing the latest technology, our wood gasification boilers are efficient and built to outlast!

Coal Boilers
These coal boilers are engineered for simplicity and efficiency. Our Coal Gun series are self-maintaining coal stoker boilers that are easy to use, low-maintenance, and suitable for any application. These coal stokers will save you time and money.

Outdoor Coal Boilers
Our outdoor coal stokers last for up to 30-days on one hopper! There is nothing else like this coal boiler on the market. These are a culmination of over 40 years of making coal stokers.

Waste Oil Boilers
Our high-quality waste oil boilers are engineered to be maintenance-friendly. We have three different series to choose from, and they easily heat +50,000 sqft. Our systems will serve you for decades to come.