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2. Pellet heating - Wikipedia

   en.wikipedia.org/wiki/Pellet_heating

   Pellet heating is a heating system in which wood pellets (small pellets from wood chips and sawdust) are combusted. Other pelletized fuels such as straw pellets are used occasionally. Today's central heating system which run on wood pellets as a renewable energy source are comparable in operation and maintenance of oil and gas heating systems.

3. Outdoor wood-fired boiler - Wikipedia

   en.wikipedia.org/wiki/Outdoor_wood-fired_boiler

   The outdoor wood boiler is a variant on the indoor wood, oil or gas boiler. An outdoor wood boiler or outdoor wood stove is a unit about 4-6 feet wide and around 10 feet long. It is made up of four main parts- the firebox, which can be either round or square, the water jacket, the heat exchanger, and the weather proof housing.

4. Pellet stove - Wikipedia

   en.wikipedia.org/wiki/Pellet_stove

   Professionally built wood-fired ovens with sawdust hoppers were used in the early part of the 20th century. All of these units used scrap wood or sawdust. In 1930, the Presto-Log was invented reusing scrap sawdust from the Potlatch pine mill in Lewiston, Idaho for domestic heat. From this came the miniaturized pellet stove, which emerged from ...

5. Tips for troubleshooting water heater issues - AOL

   www.aol.com/tips-troubleshooting-water-heater...

   Gas water heaters are generally less energy-efficient than electric water heaters, but the cost of electricity may make gas a better choice. It really just depends on how you use your heating system.

6. Can 'energy hog' hot tubs be greener? - AOL

   www.aol.com/finance/energy-hog-hot-tubs-greener...

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7. Biomass heating system - Wikipedia

   en.wikipedia.org/wiki/Biomass_heating_system

   Wood chips in a storage hopper, in the middle an agitator to transport the material with a screw conveyor to the boiler Biomass heating systems generate heat from biomass . The systems may use direct combustion , gasification , combined heat and power (CHP), anaerobic digestion or aerobic digestion to produce heat.

8. Tips for troubleshooting water heater issues - AOL

   www.aol.com/finance/tips-troubleshooting-water...

   Learn how to quickly troubleshoot your water heater. For premium support please call: 800-290-4726 more ways to reach us

9. Jetstream furnace - Wikipedia

   en.wikipedia.org/wiki/Jetstream_furnace

   Jetstream furnaces (later tempest wood-burning boilers), were an advanced design of wood-fired water heaters conceived by Dr. Richard Hill of the University of Maine in Orono, Maine, USA. The design heated a house to prove the theory, then, with government funding, became a commercial product.