I have not had a manual J done. However, based on the past 10 years experi
ence with a 4 ton A/C system, I've been able to keep the humidity down and
be cool during the summer here in central Florida. However, there are usua
lly a few times during the summer - when it is extremely hot outside and/or
we have many guests - oven on all day - people coming in and out, etc. whe
re we have not been able to get the temperature below 79 or 80. These days
, I swore I would get a 5 ton unit when it was time to replace it. But now
I am having second thoughts because I am more concerned with short cycling
and having higher humidity.
One installer said this is not a big concern, because a 5 ton, dual stage c
ompressor with variable speed air handler would work at a reduced rating to
help keep humidity low and would only boost up to full capacity when it wa
s needed during those few times a year. And he also mentioned being able t
o control humidity with the thermostat.
system, I've been able to keep the humidity down
and be cool during the summer here in central
Florida. However, there are usually a few times
during the summer - when it is extremely hot outside
and/or we have many guests - oven on all day - people
coming in and out, etc. where we have not been able
to get the temperature below 79 or 80. These days,
I swore I would get a 5 ton unit when it was time to
replace it. But now I am having second thoughts
because I am more concerned with short cycling and
having higher humidity.
speed air handler would work at a reduced rating to
help keep humidity low and would only boost up to
full capacity when it was needed during those few
times a year. And he also mentioned being able to
control humidity with the thermostat.
Your mother and I both love you very much.
She and I both notice you did not ask any
questions, which is fine.
Christopher A. Young
learn more about Jesus
The OP says he is having second thoughts about getting 5 tons versus 4,
despite an installer opinion that dual-stage compressor should not short
How explicit does the OP need to be here?
His question is obvious: Is the installer correct?
Why do old timers here find it neccesary to jerk people's chains?? Why not
just HELP the OP?
Funny -I'm an old timer myself. I've probably been on the newsgroups, and v
arious bbs, longer than most here - since 1987. Not specifically al.hvac,
but alt.home.repair. I have noticed people are a lot less helpful and a bi
g increase in trolls.
But anyway, I actually posted, and then deleted this post because an instal
ler came back with the Manual J calculations for my home. He actually meas
ured all the windows and doors to get accurate inputs. From the calculatio
n, it shows I need a 4.8 ton for max cooling (92 F outside, 75 F inside).
If you over size the system, it'll short cycle and that'll lower system
efficiency as well. Better talk to trust worthy expert installer. I am
OT too. Fortunately I retired from Honeywell, I can draw from guys still
working there regarding matters like this, LOL!
I too am an old timer, using Darpanet at my work many decades ago, and
running a BBS with my son in the early 80's.
The alt.hvac newsgroup in particular has a history of snarky and obnoxious
non-helpful trolls even dating back 10-15 years. Sadly some other groups
seem to be slowly sinking into a cesspool as well, with the home repair
group suffering the impact of some really shit-filled traffic originated by
only a few but sustained by active feeding.
The reply to the original post which pathetically tried to be clever and
taunt you from the religious storming fellow near Palmyra NY is an utterly
inconsiderate piece of ironic conceit. Sad because he's a very knowledgable
and supposedly pro hominem devout person, yet his jerky answers betray him
time after time.
BTW, I have 4 tons dual stage in an 1800 sq ft ranch in the Northeast. No
short-cycle issue here and fast cool down is a real plus.
I've been reading alt.hvac for many years, Stormin Mormon has been
one of a handful that actually provide answers to homeowners or lay
people. A few years ago I had a spiel I forget now, about hvac techs
lack of self confidence and having to keep what they know to themselves,
just so they could feel good they now something the
Anyway Stormin wasn't one of those, maybe he's having a bad day,
or just being cute.
"Just being cute" is exactly why I barked. Stormin may indeed "actually
provide answers to homeowners or lay people" just as you say, but in this
and some other cases I see the exact opposite.
I am not a particularly religious person, but the Bible's Golden Rule of
'Do Unto Others as You Would Have Them Do Unto You' strongly suggests, even
to me, that you treat strsngers / homeowners / lay people with respect.
Someone like Stormin who self-advertizes his Jesus connection with EVERY
post in his signature should walk the walk rather than just talk the talk.
One--- You are an idiot..
two--- The Mormon was never a licensed or trained HVAC Tech
Three--When this NG was formatted, it was meant only for People in the
Four--- We discouraged freebee's as this is our living.
Five--If you get advice and you screw up and get hurt/dead/whatever
who is liable?
Six---we discouraged cross posting to hold down on extraneous time
consuming postings. Most of us had busy schedules of work.
Seven--- This NG has been abandoned by the professionals as our
moderator left and the infestation by the Home-moaners got out of hand.
Eight---Why haven't you Geniuses started a NG that fits your needs?
Paul...One of the three people who built this NG committed suicide last
month due to Health and economic reasons.
It is hardly too strong to say that the Constitution was made to guard
the people against the dangers of good intentions. There are men in all
I know he has offered me some reasonable suggestions.
What more can you ask for? I try to "give and take" in all of the
newsgroups I read.
It sounds like some readers want a "guild" rather a newsgroup, so they
may have chosen the wrong format.
HomeOwnersHub.com is a website for homeowners and building and maintenance pros. It is not affiliated with any of the manufacturers or service providers discussed here.
All logos and trade names are the property of their respective owners.