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New split AC System impact on sound.

I need to purchase a New split ac System (ie air handler in attic, Compressor outside). As with anything in this world so many complexities and my focus is to make things quiet when I’m listening to things.

Unfortunately, the compressor will be located outside of the room of my equipment. And I could choose a one stage or a variable stage heat pump that might be quieter. Anyone have recent experience and thoughts on how best to proceed for a moderately humid Area in the north east.

The problem with newer systems that I see is that the cooling coils don’t get as cold as they used to. Older R22 freon Systems which I currently have were more favorable toward reducing humidity in the home and the newer more environmentally friendly Freon varieties such as 410 and the newest 454b keep the coolant coil a little warmer which isn’t the greatest.

 

emergingsoul

Showing 3 responses by emergingsoul

emergingsoul OP
1,310 posts
 

@ghdprentice

Actually I’m looking at a bosch heat pump three tons. Concern I have is the complexity of future maintenance and ability to eliminate humidity when it’s on lower speeds. Although a lot depends upon the installation which can make or break the outcome. I do hear the freon cooling point can be adjusted lower to mitigate this problem so that fan speed can be reduced which enhances dehumidification effectiveness. But I have heard these units do have issues with humidity although the settings might be able to overcome this.

 

emergingsoul OP
1,310 posts
 

@ghdprentice

I’ve had a basic one stage AC since 1992, tempstar, and I’ve had no maintenance except to change out a few fuses which I did myself, no annual visits for fear freon would gradually be released. Capacitors never been changed out. Only thing I’ve done is to change out the filters which are exceptionally important to not interfere with airflow as a clogged filter could lead to freezing of coils which could lead to the death of a system via leaks, etc.

10 years ago I added 3 pounds of Freon and since then everything has cooled really well but after a lot of cycling last year cooling robustness has diminished and at this point decided to replace it I think outcome of selling the house Will improve with a new AC otherwise I’d have a mark down to the closing cost.

emergingsoul OP
1,310 posts
 

the bosch heat pump can be set to become a 2 ton unit from a 3 ton and from a five to 4 ton via dip switch but I think there's some automatic features that automatically adjust capacity between the Compressor and the air handler. And the air handler comes with two speeds so it's not fixed so that's a good thing.  It seems it's a lot of simple things going on with a lot of fancy words they sprinkle on.  Like super cooling and suction and saturation points - my favorite is liquid slogging. 

When I initially sought out a replacement thought I could just get a one stage and call it a day but then temptation grows and you learn about this new stuff on the market and it sounds compelling.  Further if I enable the heating side of the heat pump it can be supportive to my existing heating system which might be ideal on those not so cold days but I don't get ventilation into my basement but still it's kind of a neat feature.  

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