0
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.
Wiki User
∙ 16y ago
Add your answer:
Earn +20 pts
How do you find the efficiency of your furnace?
Divide the btu output rating by the btu input rating. Both of these values can be found on the furnace`s nametag.
When operating a high efficiency nat gas forced air furnace and heat pump at what cost ratio or percent of gas therms to kilowatt hours does it make more sense to use the high efficiency furnace only?
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.
How can you tell if its a high efficiency furnace?
pvc flue pipe and has a condensate drain
What is a high efficiency furnace I should look into buying in order to keep my 5000 square foot home warm?
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.
Is it OK to convert your high efficiency furnace from its now inside air intake to start getting the intake air from the outside?
Yes, most if not all 90+ efficient furnaces are designed to take primary or combustion air from outdoors. That is partly where they get their high efficiency rating from. They are not using air that has already been heated for combustion.
What are some questions to ask before purchasing a high-efficiency furnace?
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?
What is the BTU rating for a Heil gas furnace?
It depends on the furnace, they come in different sizes. There should be a data plate on or in the furnace which lists the input and output rating.
What size breaker do you use for a furnace?
It depends on the rating of the furnace. There should be a plate or sticker somewhere on the furnace that shows the rating. If you are just powering a blower motor the rating will be lower than if you have an electric heating element.
Input rating of furnace?
Question?
Which is more efficient a wood stove or a high efficiency furnace?
depends on whether you have to pay for the wood... if the wood is free then you can't beat the costs.
A condensing gas furnace uses from a condensing type heat exchanger to increase the furnace efficiency?
Yes
How can a furnace be 500 percent efficient?
furnace highest rating is 97 % efficient for a residential model. This is known as a condensing furnace.
