Welcome! Here are the website rules, as well as some tips for using this forum.
Need to contact us? Visit https://heatinghelp.com/contact-us/.
Click here to Find a Contractor in your area.
Do I need to have this redone? Should I? Attic Installation LG Low Static Ducted Heat Pump
Should I try to have this redone? Unconditioned, vented attic Installation of LG Low Static Ducted Heat Pump
I have two areas of concern. One is the impact of excessive crimping/smushing on air flow. That’s what I thought when I saw it, because I thought it would look a lot neater. After reading more about it, I learned there is a second concern based on all the contact the ducts are making with different surfaces, which is about condensation.
Reading from the “Support at Intervals for Flex Ducts” https://basc.pnnl.gov/resource-guides/support-intervals-flex-ducts#edit-group-retrofit, it says:
Additions: If new flex duct is added to an existing home, either as part of an addition or an equipment upgrade, ensure that the flex duct is installed in runs that are as short, straight, and direct as possible, and properly support the duct through the use of hangers or stands as noted in the Description tab.
It seems like the air flow restrictions would have consequences on the air handler motor if the external static pressure is too high. I have inquired with the installers about if they did a static pressure test and what the results were.
On the condensation, I am concerned from this: https://basc.pnnl.gov/resource-guides/support-intervals-flex-ducts#edit-group-climate I am not sure anyone worries about it here though in our 5A cool-humid climate. I don't know if it is a problem or not, or how much of a problem it is.
Would you (should I) worry about condensation and moisture problems from having cooling ducts in an unconditioned attic resting on loose fill insulation and crossing over and laying on each other and with crimping around corners? Or is that something people worry about at Building America Solutions, but unnecessarily so?
- All Categories
- 85.1K THE MAIN WALL
- 3K A-C, Heat Pumps & Refrigeration
- 55 Biomass
- 424 Carbon Monoxide Awareness
- 67 Chimneys & Flues
- 1.9K Domestic Hot Water
- 5.2K Gas Heating
- 129 Geothermal
- 160 Indoor-Air Quality
- 3.3K Oil Heating
- 60 Pipe Deterioration
- 864 Plumbing
- 5.8K Radiant Heating
- 375 Solar
- 14.6K Strictly Steam
- 3.2K Thermostats and Controls
- 57 Water Quality
- 657 Buy, Sell, Barter
- 47 Industry Classes
- 87 Job Opportunities
- 27 Recall Announcements