Type: Posts; User: energy_rater_La
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The greatest operating cost and wear on the system comes during system start up.
just because it bears repeating.
zoned systems can be a wonderful thing when done correctly.
otoh...they can be...
did you get in touch with classical?
take him up on his offer!
I'm sure he can steer you towards like
best of luck
sorry if I wasn't clear.
OP asked about upsizing 1/2 a ton.
not ideal, but not uncommon.
one way to provide better humidity removal
is to install a variable speed air handler unit.
can you answer some of the questions?
what size is return air?...it is written on the
I upsized 1/2 a ton. but for better humidity removal
I have a variable speed air handler....
I agree with the whole house dehumidifier.
set it up with fresh air intake, set DH300 controller
to 50% & forget about it until it is time to change
from your post:
X2 on heat pump vs elec strip heat only.
in my hvac classes there was no training in installing a duct
system at all. much-less in a home with no existing duct system.
in addition to the techincal aspect, there is more to this type...
I think I need to make a site visit to advise you on this issue.
notice how the foam seals the roofline to the attic floor, completely
sealing off soffits.
also the foam covers the faces of the rafters with full depth of foam
in rafter bays.
sure if the walls are open, get a roll of R-13 (or R-15 if you can find it)
and insulate away. you'll never be able to do it so easily & inexpensively
as when the walls are down to studs. and caulk...
when gathering info etc, pick everyone's brains about foam insulation.
you can spend a lot of time air sealing every opening...but if you run the
numbers between the hands on air sealing,...
I was working in Algiers Point a couple of weeks
ago...4 days. great old house...but dirty attic!
lets slow down a minute.
400 sq ft per ton will have the system so oversized
that you'll get...
here is floor insulation info for hot humid climates
excellent info from LSUAg center.
nice replies ductman! (& Happy Easter y'all!)
Op, can you post a few pics?
did anyone look at the return air?
unsealed leaky return will cause RH to rise.
best of luck.
first of all, your wife has my sympathy. bad enough to
have the disorder & then have such charming support.
it isn't a good thing to add pav's (powered attic vent) to the
attic. they do pull...
I don't get the reason for the post.
homeowner did load calc, but ignores it.
hvac company doesn't do calcs, wouldn't install system
to someone else's load calcs.
its a wag as to the size of...
I use the filters with the 1" lip 20x25
buy them by the case (of 5) from my hvac supply house.
I didn't purchase the deeper filter rack either, so I've
been using the filters with the lip....
if they wrote down the cfm for each supply,
then you should be able to determine the ducts
size of duct & cfm delivered.
ditto on both setting of fan speed
& return leakage.
how did you measure cfm of registers?
I generally stay out of discussions in northern climates...but just
wanted to provide some unbiased info about foil bubble foil stuff.
"For bubble wrap to be effective on ducts, the installers would have to put in spacers to keep the bubble wrap from being in contact with the ducts. Not once have I seen spacers on bubble-wrap...
wood is a poor conductor, metal is an excellent conductor.
this is why metal window frames condensate. to the warm
side always. we just notice it in the winter...
true, but window tints on single wood windows work well.
solar screens. caulking the window frames to the walls will
be a boost to comfort. better use of the $$, and not as costly.
if OP's house...
Entergy New Orleans - Energy Smart energy efficiency home fix-up program.
Local solar with energy efficiency Posigen or www.gosunpro.com
have to agree with Dan. long payback on windows.
good money that could be used to improve the efficiency
of the house elsewhere.
windows will save you 7-15% at best. for thousands of dollars...
building a furdown is a good idea.
if you paint it to match the walls you'll hardly notice
it in a short time.
best of luck
hvac companies in your area will be a better
source of information than the utility company.
size the unit for the house.
& you'll probably need separate source for garage/work area.
Yay someone building!!! it is so much easier to build it right to start with.
use this guide for your walls:...
in Miami a cool roof would provide you good savings.
if you put foam sheathing under the roofing it will
also stop thermal bridging of...
is the top of the closet open or sealed closed?
can you take a pic of the top of the closet?
any issue with water on the platform, sure
looks like water tracks on the ahu cabinet.
555151I order mine by the case @ hvac supply.
ask your hvac company about media filters
that retrofit into you existing return.
or change return air filter grill rack to one that
which one did the manual j to determine
what size system you need?
the only insulation that stops air flow is spray foam insulation.
cellulose will slow the air movement, more so than fg...but
not stop it.
air sealing is a different animal than insulation with...
average for duct system has 30% loss.
you lose at least 1/3 of every dollar spent
on utilities, every time the system operates.
just like air sealing your house, you
can diy duct sealing.
when air is forced into the house, it picks up particulate matter
from openings in the duct system, supply boxes, plenum connections etc.
rather than purchasing things to clean the air, you...
expect that $50 audit from utility company to
only reduce your energy costs by 10-15%.
after all their business is to sell you energy.
I'd opt out for independent analysis with
most homeowners assume their homes are tight.
I see it with every blower door test I do.
very few are actually tight, it doesn't just happen
with a leaky house (& duct system) OP...
I just had to google it..and there you are..
(obviously not me)
R-8 is the ticket.
just keep the insulation tight to the
hard pipe. how are you securing...
gaps between the hard pipe duct & the insulation will
allow condensation to form.
you want the insulation snug but not compressed.
can't imagine that bags of flex are cheaper than wrap......
radiant barriers are only good in summer, no winter benefits,
or so infinitesimal as to be moot.
you can always stage the heat strips so that they don't come
on in full size during times when...
in using larger size flex..how do you keep insulation
in full contact with the hard pipe?
duct would have be be unassembled?
seems more hassle/cost than necessary, unless I just
had excess flex...
the precision of those cut out cardboard pieces...
not too shabby.
except, well...its cardboard.
fire rated foam I hope.
there are a couple of ways to deal with leaky electrical boxes.
air tight boxes
or foam gaskets placed under covers.
metal framed windows will always condensate....
windows are high cost with minimal impact on efficiency.
7-14% energy efficiency improvement is all you get with
better use of time & monies would be to air seal.
starting with attic...