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Bernd  Fighting algorithmic racism like John Henry  1yr ago (image post)   Edited 1yr ago   4203 thread views

Mini Split Heat Pumps: Not Significantly More Than You Reasonably Need To Know

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In summer, I get annoyed at my retired parents for setting their small house two-room mini-split to 72F. They refuse to believe that’s the temperature of the air coming out of the things, not a thermostat temperature the device will smartly adjust toward.


Set it to 60, please, to mix with the 90F New Mexico air and approach non-sweat temps, please. You’re ALREADY energizing the coil, you’re already spending money, just turn it down twelve degrees!


And turn off the two standalone fans, just let convection move the cold air into all four rooms. You’re using up all the electricity you’re “saving” from 72F air instead of 60F.


Seriously. I lived there for five years, I know how to cheaply heat and cool that house.


				

				

						

							

								
							

						


						
					

				
			


			

	


			
			 
				
					

						
							



	

	

		
			

			

				

			

		

			


				

					
It should be the room air temperature, because the indoor unit reads the intake air temperature and tries to get it down to the target temp (or uses the remote's thermometer, if you have a "follow me" setting). That's odd and maybe a sign of something wrong.


Some of these things do have weird behaviors, which I'll post a bit more about at some point. Mine goes to the lowest output once it gets 1 degree from the set point, rather than waiting to exceed the set point before throttling back. So if I want a 67F room it should be set for 68F.


				

				

						

							

								
							

						


						
					

				
			


			

	


			
			 
				
					

						
							



	

	

		
			

			

				

			

		

			


				

					
This model gives no way to read current room temperature. The remotes are dumb infrared output-only devices, sending the entire desired settings on each button press. both remotes are identical, and work for both units, independently. I have a hard time believing it is intended to do anything other than have a desired output temperature, since I’ve seen absolutely no indication of any thermostat-style behavior.


				

				

						

							

								
							

						


						
					

				
			


			

	


			
			 
				
					

						
							



	

	

		
			

			

				

			

		

			


				

					
What's the model? If you look in the top you should be able to see the temperature probe in the inlet path, under the filters


				

				

						

							

								
							

						


						
					

				
			


			

	


			
			 
				
					

						
					

				
			
		

	



						
					

				
			
		

	



						
					

				
			
		

	



						
					

				
			
		

	




	

	

	

	

	

	
	

	
	

	
 















	






			
			

		

		
			
				


	

		
	


	


		
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