Some of the most efficient units today can get up to 97 3 annual fuel utilization efficiency afue ratings.
													
																	3 ton furnace square footage. 
								
	
		
	
																	Tonnage will increase the price by about 300 to 400 per extra ton of cooling. 
																	3 75 1 0 2 75 so you d need a 2 5 or a 3 ton sized central air conditioning unit. 
																	For example a 95 rated efficiency furnace with a power rating of 80 000 btu hr has a power output of 0 95 x 80 000 btu hr 76 000 btu hr. 
																	In the example you would divide 35 000 by 12 000 and get 2 92. 
															
													
								
	
		
	
																	For this example using an 80 efficient furnace the 1900 square foot home above would require a 90 000 btu input furnace that produces 72 000 btu s of heating which is close enough to the 76 000 btu s required using the climate heating factor. 
																	Acs are sized in tonnage which measures the amount of cooling the unit can provide in an hour. 
																	I felt a 3 ton unit would be enough but in the square footage i measured itt includes a den with a high open beam celling. 
																	A gas furnace does require that your home is. 
															
													
								
	
		
	
																	Its like a rectangle measuring 17 5 x 19 5. 
																	Gas furnace prices range from 1 600 to 8 000 for a 3 0 ton unit. 
																	But it s vital to understand that there are. 
																	This home would require a furnace that has a tonnage of approximately 3. 
															
													
								
	
		
	
																	The outside edge is 10 ft high then it goes up a little over 12 ft. 
																	Keep in mind that the following furnace output power estimates are aside from the furnace s nominal power ratings. 
																	Typically residential acs range from 1 ton units to 5 ton units half sizes included i e 2 5 tons. 
																	Furnace output and air conditioner size for a bungalow. 
															
													
								
	
		
	
																	1 500 x 30 45 000. 
																	This chart is a general guideline that covers tiny houses to average size homes. 
																	So while 3 ton heat pump may be labeled and sold as three ton unit it may not produce anything close to its rated 36 000 btu h in cooling. 
																	High efficiency furnaces can help you save during the colder months of the year by using less natural gas to heat your home. 
															
													
								
	
		
	
																	So for instance a 1 500 square foot home would look something like this. 
																	Using your formula i figured a total square footage in my home at 1595 25 sq ft. 
																	If you are looking to save on energy costs you can consider buying a 3 ton heat pump split system. 
																	45 000 12 000 3 75. 
															
													
								
	
		
	
																	Many different factors other than square footage that determine how effective the any heat pump will be. 
																	A quality three ton heat pump can effectively heat or cool an average area of 1 500 square feet but will be too large for smaller spaces. 
																	House square footage times 30 divided by 12 000 1 0 required tonnage. 
																	In general purchase according to 1 000 square feet per ton.