pvc flue pipe and has a condensate drain
a high efficiency furnace is a furnace that uses less electicity and saves on heating expences. they are very useful in the winter and great to lower your central heating bills.
There are 3413 btu per kWh and 100,000 btu per therm of natural gas, these are constants. In order to give a correct answer the exact efficiency rating of the high efficiency furnace and the energy costs per kWh and therms would need to be known.
The efficiency rating is called annual fuel utilization efficiency or afue. For residential systems in the USA, the minimum is 80%. There is no standard for what is considered "high efficiency". The range of efficiencies goes up to about 96% for gas furnaces.
Some questions to ask before purchasing a high-efficiency furnace are as follows: Is it safe to use? Is it cheap to maintain? Does it emit harmful gases? Are the spare parts readily available? Can one reduce energy bills?
depends on whether you have to pay for the wood... if the wood is free then you can't beat the costs.
Yes
No. That hot tub will evaporate so quickly,it is a high risk to human beings.
Inc Thermacore has written: 'Development of a High Efficiency Warm-Air Furnace Using Heat-Pipe Principles'
15 years
If no major duct work involved, the price range is about $1,500 ~ $2,000 for basic models. If you want high efficiency and variable speed, it can easily cost you up to $3,000. Be cautious, only buy the functions and accessories matter to you. It's hard to get your investment even with a high efficiency furnace since current natural gas rate is pretty low.
They didn't have any real high efficiency furnaces or AC in 1992. If you meant 9.2 - that is poor. So please repost with more info. tks
PURCHASE A 1" PLEATED FILTER IN EITHER MED. OR HIGH EFFICIENCY GRADES. SAME AS A "RUUD" BRANDED FILTER. LC