One option would be the rheem rtgh 95dvln 9 5 gpm indoor direct vent tankless natural gas water heater.
													
																	What size gas water heater do i need for a family of 4. 
									
	
		
	
																	To put it briefly for a family of 4 you will need. 
																	Smith s proline power vent gas water heater available from supplyhouse should get the job done. 
																	Below we ve highlighted what size water heater you would need in our example of 6 5 gpm at a 63 f temperature rise. 
																	Therefore to size a demand water heater you need to determine the flow rate and the temperature rise you ll need for its application whole house or a remote application such as just a bathroom in your home. 
															
													
									
	
		
	
																	This is because water heater size directly impacts its cost. 
																	How to determine the size of a water heater tank. 
																	Before buying a tank water heater most homeowners want to get a rough idea of the water heater size their family needs. 
																	This is assuming 3 showers running simultaneously with 3 star water saving shower head. 
															
													
									
	
		
	
																	Hot water for a family of four. 
																	For the average family of four a 40 gallon water heater like a. 
																	The bigger the water heater tank the more expensive it will be. 
																	A gas storage hot water system is also a great choice as they are very economical. 
															
													
									
	
		
	
																	First list the number of hot water devices you expect to use at any one time. 
																	Family of 1 2. 
																	Storage tank hot water heaters are sized based on btu input and capacity in gallons. 
																	50 gallons family of 5 or more. 
															
													
									
	
		
	
																	Then add up their flow rates gallons per minute. 
																	40 gallons family of 3 4. 
																	But it shouldn t be your. 
																	A 125 160l tank for a continuous system or 250 315l for off peak. 
															
													
									
	
		
	
																	Minimum gallon capacity recommendations. 
																	For example a family of 5 or more could live very comfortably on a 30 gallon tank water heater while a household of 2 might find that a 30 gallon tank can t provide. 
																	If your family size is 5 or more you ll need an 80 gallon tank electric or a 50 gallon tank natural gas or liquid propane. 
																	As an example an instant hot water heater size for family of 5 would be a 21 litres per minute flow rate vs a hot water tank size for family of 5 would be 230 300l 60 80 gallons. 
															
													
									
	
		
	
																	3 4 people you ll need at least a 50 gallon capacity tank electric or a 40 gallon capacity tank natural gas or liquid propane. 
																	Simply locate the appropriate water heater sizes on ecomfort using your information. 
																	If you intend to use a tank water heater use these recommendations as a guide to finding the size you need. 
																	30 gallons family of 2 3. 
															
													
									
	
		
	
																	A tank of about 135 170l however there are also instantaneous system. 
																	Now that this family can answer the question what size electric tankless water heater do i need they just need to pick a good tankless water heater.