[beenthere]

What ever temp they feel comfortable at.

I prefer 72 myself.

 

[beenthere]

I have an IAQ. Wouldn't if be nice if I could set my thermostat for dew point instead of temp?

NO.

At 80DB and 60DP your RH would be 50.5%
At 76DB and 60DP your RH would be 57.6%
At 72DB and 60DP your RH would be 65.9%

 

[beenthere]

The ASHRAE guide for buildings in hot and humid climates strongly recommends that building interior dew points in these climates be maintained below 55 degrees F. With that in mind, your chart changes as following:

80db @ 55dp = 42% RH

76db @ 55dp = 48% RH

72db @ 55dp = 55% RH

The 55 degree dew point or less is based on the ASHRAE Human Comfort Range stated in the Handbook of Fundamentals as well as several other publications, such as Humidity Control Design Guide.

The ACCA Manual J default indoor design temp and RH of 75db @50% RH = 55 degrees dew point.

LOL... I used 60DP to demenstrate the RH extreme, whentemp is not considered.

Until more systems like the Nordyne IQ's come out.
Using DP instead of temp and RH in residential applications, is not practical.


Personally, I like 72DB 48%RH, which is a DP of 51.3.

 

[beenthere]

A bit chilly for me, and my wife would likely smash the condensing unit before resorting to a parka!

It can feel a bit brisk some days near the end of an on cycle.

Might have to increase my blower speed to 300CFM per ton one of these days.

 

[beenthere]

It would help a lot.

 

[beenthere]

I run my own as low as 280CFM per ton.

My A/C is a 2.5 ton. So, its usually only at 700 CFM.

You should have your contractor become a member here.