Q: How cost effective are outdoor wood furnaces?
A: Outdoor furnaces are a cost-effective source of heating energy for many owners who cut their own wood, or can obtain free or reasonably priced wood as fuel. Often, owners can entirely eliminate their heating bills. Over a 10-year period, a homeowner or business may save $10,000 to $50,000 or more on heating costs. In addition, some insurance companies prefer outdoor wood burning furnaces over indoor wood stoves because they remove the fire hazard from the home.
Q: What fuel is recommended for Central Boiler outdoor furnaces?
A: Depending on the model, Central Boiler outdoor furnaces burn seasoned wood, wood pellets, corn or other manufacturer's listed fuels like liquefied petroleum, natural gas or heating oil in the case of a dual fuel backup.
Q: Can you burn trash and scrap material in outdoor furnaces?
A: No. Central Boiler outdoor furnaces are designed to burn seasoned wood, wood pellets or corn. There are existing laws in some areas that prohibit the burning of trash that can be enforced against someone who burns trash in any device. Burning materials other than the fuels recommended by the manufacturer is not only bad for the environment, it is harmful to the furnace. Central Boiler forbids this practice and furnaces are posted with clear warnings not to burn trash. In addition, Central Boiler warns against burning materials such as plastics, gasoline, rubber, naphtha, household garbage, material treated with petroleum products (particle board, railroad ties and pressure treated wood), leaves, paper products and cardboard. Central Boiler works to educate distributors and users about Best Burn Practices.
Q: How is Central Boiler’s outdoor furnace more efficient than other outdoor furnaces?
A: Central Boiler outdoor furnaces are equipped with a water baffle that traps heat and gases at the top of the heavy-gauge steel firebox. The Ripple Top® firebox design creates a high-temperature secondary burn area for more complete combustion – the ability to collect more heat. It also allows for optimum heat transfer surfaces in the most intense heat collection area, so more heat can be transferred more efficiently to the water that is pumped to the building being heated. The firebox is enclosed in a water jacket to keep the metal from overheating or warping and it’s surrounded by waterproof, airtight urethane foam insulation.
The Central Boiler E-Classic models are the latest advance in clean wood-burning technology. They feature a three-stage combustion process that drastically reduces particulate emissions because they burn the wood so completely. The E-Classic’s controlled combustion delivers the proper amount of oxygen at optimal intervals, preventing the wood from burning too rapidly or from smoldering by burning too slowly. In addition, the E-Classic’s heat exchanger uses water to transfer heat from the extremely hot gases, producing exceptionally high thermal efficiency with low emissions per Btu of heat output.
Q: Can I use an outdoor wood furnace if I live in town?
A: Many towns allow the use of outdoor wood furnaces. Always check with all applicable laws and ordinances. Review Best Burn Practices and installation instructions for applicable models.
Q: Can outdoor furnaces explode?
A: Central Boiler outdoor wood furnaces are vented, non-pressurized systems, which eliminates this possibility. All Central Boiler outdoor furnaces are safety tested and listed. The listing placard is affixed to the exterior of every Central Boiler furnace.
Q: Are there regulations for outdoor furnaces?
A: EPA announced the EPA Outdoor Wood-fired Hydronic Heater Programs to promote the manufacture and sale of cleaner outdoor wood furnaces. Many of the States below have enacted regulations and laws based upon the particulate emission limits and test methods established in the EPA Outdoor Wood-fired Hydronic Heater Programs.
Central Boiler supports appropriate, effective ordinances that prevent and/or correct outdoor furnace misuse. Many communities throughout the United States have already implemented local regulations and Best Practice Ordinances. Central Boiler worked with EPA on its new testing standards and works with state and local governments on appropriate regulations to encourage cleaner burning wood furnaces and to implement Best Burn Practices.
Here are some States that have regulations on outdoor wood furnaces.
Q: What communities have implemented successful ordinances?
A: Many communities throughout the United States have already implemented local regulations and Best Practice Ordinances.
Q: Who can I contact to establish an outdoor furnace ordinance?
A: Central Boiler supports effective ordinances that promote proper installation and use, and prevent and/or correct outdoor furnace misuse. Information about how to establish smart and successful outdoor furnace regulations are outlined in the Best Practice Ordinances. For additional information, Contact Us at Outdoor Furnace Facts.
Q: Do outdoor furnaces produce four times as much fine particulate matter (PM) pollution as conventional wood stoves?
A: No. The New York AG’s report “Smoke Gets in Your Lungs” misleads the public, local government agencies, the press and other organizations about emissions from “Outdoor Wood Boilers” (OWBs). The information in the report makes improper comparisons using manipulated data.
The authors of the report took information from a United States Environmental Protection Agency report which reported conventional indoor wood stove emissions as 18.5 g/kg (grams per kilogram). However, the authors took the 18.5 g/kg information and incorrectly inserted it into the AG report as 18.5 g/hr (grams per hour). The author’s also manipulated data in their report regarding other wood heating appliances.
This misinformation is used to make the false claim that OWBs emit, “four times as much fine particulate matter pollution as conventional wood stoves.”
See: New York AG Report Fact Check
References to outdoor wood furnaces do not necessarily refer to all furnaces manufactured by any manufacturer; in many cases the available data relates to furnaces manufactured by specific manufacturers, including Central Boiler, Inc. Some of the information presented herein is, in part, based on the conclusions drawn by Central Boiler, Inc. from a variety of data and reports, including reports published by the United States Environmental Protection Agency.