Original message
| dougjoan
 |  "High humidity area"
, posted Sun 13 Apr 20:00  
I live in northwest Florida where for about five months of the year the temperature and humidity remain about 95. The rest of the year is moderate temperature and the humidity gets down to 40 or 50 percent. We have a heat pump that does a fine job of heat and cool but I would like better performance for humidity control in my condo. I have heard about systems that will run normally as all heat pumps do as well as run in a low speed kind of way that will lower humidity without cooling or heating. Then will kick into high as the thermostat dictates for heat or cooling.
Do these systems work well. Are they expensive to replace and convert my existing standard heat pump. I live in a newer high rise building (5 years old). The compressor is on the roof and the plenum is in a closet in the hallway.
Doug Willis
|
|
Replies:
|
| deanmando
| "Re(1):High humidity area" , posted Mon 14 Apr 08:09
I believe your speaking of a 2 spead heat pump that will run at a lower speed when needed.
I can tell you from experience, this will not satisfy you for dehumidification. The theory is sound but it just dosnt work.
First, water removal is based a "cold indoor coil". The colder the coil, the more water sticks to it. If you unload capacity with your two speed, your coil dosent magicaly get smaller. So your back pressure shoots up, (warmer coil) less water sticks, and yuou continue to drop sensible. This will satisfy the sensible temp and shut the system off. System off = no water removal.
What you need. Is a seperate system for humidity. Not invasive or large, easy to instal and very effective. Come a in a large variety of sizes. I wont push any one product, i've a lot of experience with Aprilaire, but a half dozen manufacturers make em, and they are all similar.
Dont get me wrong, i like the super duper 2 speed 16-21 seer units, smooth operation, very quiet, high efficeincy. But inspite of the brochure, they will not dehumidify!
Dean Mando
"Words are wind actions speak volumes."
|
| | theduke03
| "Re(2):High humidity area" , posted Mon 14 Apr 17:43
I disagree with Deanmando. I agree with Houston. I install Infinity systems and have seen dehumidificaton in action. The coil does get just as cold in lo speed cuz the variable speed blower slows down as well. Dehumidification can cause overcooling but that is usually when humidity is set ridiculously low. You could also get a dehumidifier though you will need a place to drain the condensate.
Some of the pictures displayed here are brought to you by Houston204. Be Safe.
|
| | deanmando
| "Re(3):High humidity area" , posted Tue 15 Apr 00:11
Infinity is my favorite product, so dont get me wrong, i love the stuff. But i've made some promises with what it can do and been burnt. Sensible temp drops, and wammo, everything is off.
Dean Mando
"Words are wind actions speak volumes."
|
| | Houston204
| "Re(4):High humidity area" , posted Tue 15 Apr 19:22
I've had great results with the Infinity system.
"Tip of the Day" Remember to remove power first.
|
| Houston204
| "Re(1):High humidity area" , posted Sun 13 Apr 22:12:
http://www.residential.carrier.com/products/acheatpumps/heatpumps/infinity.shtml
Everything involves more labor in a high rise. This will increase your cost.
That said, Carrier makes an Infinity system that has great humidity control.
"Tip of the Day" Remember to remove power first.
[this message was edited by Houston204 on Sun 13 Apr 23:35] |
|
|
