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Using an EPA certified fireplace insert can improve heating efficiency by up to 50% while using less wood fuel, reduce creosote build-up in the chimney and lower smoke pollution inside and outside the home. [4] Fireplace inserts are categorized primarily by the type of fuel used (natural gas, propane, EPA-certified wood heaters, pellet, coal or ...
A gas heater is a space heater used to heat a room or outdoor area by burning natural gas, liquefied petroleum gas, propane, or butane. Indoor household gas heaters can be broadly categorized in one of two ways: flued or non-flued, or vented and unvented .
A gas burner is a device that produces a non-controlled flame by mixing a fuel gas such as acetylene, natural gas, or propane with an oxidizer such as the ambient air or supplied oxygen, and allowing for ignition and combustion. The flame is generally used for the heat, infrared radiation, or visible light it produces.
Electric heating or resistance heating converts electricity directly to heat. Electric heat is often more expensive than heat produced by combustion appliances like natural gas, propane, and oil. Electric resistance heat can be provided by baseboard heaters, space heaters, radiant heaters, furnaces, wall heaters, or thermal storage systems.
Propane, butane, and methane are all flammable gases used in fireplaces (natural gas is mostly methane, liquefied petroleum gas mostly propane). Gases can act as asphyxiant gases [17] or cause gas explosions [citation needed] if they are allowed to accumulate unburned. Ethanol (a liquid, also sold in gels) fires can also cause severe burns. [18]
High-efficiency condensing furnaces condense the water vapor (one of the by-products of gas combustion) and extract the latent heat to pre-heat the incoming furnace airflow, using a second heat exchanger. [2] This increases the efficiency (energy delivered into the building vs. heating value of gas purchased) to over 90%.
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