- My Forums
- Tiger Rant
- LSU Recruiting
- SEC Rant
- Saints Talk
- Pelicans Talk
- More Sports Board
- Fantasy Sports
- Golf Board
- Soccer Board
- O-T Lounge
- Tech Board
- Home/Garden Board
- Outdoor Board
- Health/Fitness Board
- Movie/TV Board
- Book Board
- Music Board
- Political Talk
- Money Talk
- Fark Board
- Gaming Board
- Travel Board
- Food/Drink Board
- Ticket Exchange
- TD Help Board
Customize My Forums- View All Forums
- Show Left Links
- Topic Sort Options
- Trending Topics
- Recent Topics
- Active Topics
Started By
Message
re: Any HVAC Professionals?
Posted on 5/8/19 at 11:06 am to CrawDude
Posted on 5/8/19 at 11:06 am to CrawDude
quote:
I understand 1 ton per 800-1,000 ft2 is not uncommon in a very tight, energy efficient home.
Sometimes it isn't even that much and you don't need spray foam.
I'm a bit further north but our design temp is still fairly high. I have 2,400sq ft above ground level with BIBS (blown in blanket fiberglass) in my walls which gives me R15 and reduces infiltration quite a bit compared to fiberglass batts. That alone got me down to 1.6 tons of cooling load. So I am at about .7 tons per 1000 sq ft.
1
Posted on 5/8/19 at 11:45 am to notsince98
Yep, that’s why the manual J load calculation is so important to sizing the unit. In contrast, I have a 4-ton single stage 14 Seer unit for 2,465 ft2 living area (house built in 93), about 600 ft2/ton. R-13 walls and R-30 attic - southern Louisiana. I recently used a online J load calculator to estimate my needs and it calculated 3.5 tons so I currently may be a tad oversized with my current system. But I can truthlfully say I’ve not had any cooling/heating/humidity issues, but I’m not as likely as efficient as I could or should be.
But I will hire someone to conduct a proper blower door manual J load calculation and Manual D (duct sizing) to identify and correct any significant air leakage issues I might have in the house envelope, and potentially the duct work, before sizing and installing a new HVAC system.
FWIW, I’ve pretty much convinced myself to install a whole house dehumidifier when replacing the HVAC.
But I will hire someone to conduct a proper blower door manual J load calculation and Manual D (duct sizing) to identify and correct any significant air leakage issues I might have in the house envelope, and potentially the duct work, before sizing and installing a new HVAC system.
FWIW, I’ve pretty much convinced myself to install a whole house dehumidifier when replacing the HVAC.
This post was edited on 5/12/19 at 9:25 am
Page 1 of 1
Popular
Back to top
Follow TigerDroppings for LSU Football News