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The annual fuel utilization efficiency (AFUE; pronounced 'A'-'Few' or 'A'-'F'-'U'-'E') is a thermal efficiency measure of space-heating furnaces and boilers.The AFUE differs from the true 'thermal efficiency' in that it is not a steady-state, peak measure of conversion efficiency, but instead attempts to represent the actual, season-long, average efficiency of that piece of equipment ...
[50] [47] [49] The payback period for larger commercial systems in the US is 1–5 years, even when compared to natural gas. [47] Additionally, because geothermal heat pumps usually have no outdoor compressors or cooling towers, the risk of vandalism is reduced or eliminated, potentially extending a system's lifespan.
Primary energy sources may be fuels like coal or wood, oil, kerosene, natural gas, or electricity. Compared with systems such as fireplaces and wood stoves, a central heating plant offers improved uniformity of temperature control over a building, usually including automatic control of the furnace.
This category includes furnaces, boilers, and heat pumps. [1] [2] Distributed heating systems: These systems generate heat in the space they are to heat, without extensive duct systems. Examples include electric space heaters, fireplaces, and solar heating. [3]
Between that and landscaping cast-off that I stumble across, I have not had to buy firewood for many years (I also have a natural gas furnace but usage is reduced to less than 1/4). #26
Consider, for example, that 30 years ago, in 1994, a gallon of gas cost around $1.11. More recently, it's averaged $3.03 in the U.S. ... if your earnings over your working life were above average ...
The International Energy Agency has said that new gas boilers (or gas furnaces) should be banned no later than 2025. [12] Many installations and appliances have a life-span of 25 years, leading for calls that the bans must take place immediately, or at latest by 2025, because otherwise targets of net zero by 2050 cannot or are unlikely to be ...
Image credits: windexfresh #5. I took out salary continuance insurance until I was 65 instead of just the 2 years I was originally thinking. I was only 35 when I did that.
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