A load calculation can be made to say whatever the person doing it wants. All you have to do is fudge the inputs.

 

I might I mean the rest of my people in household think the a/c is i fine. I have told them I am hot and we should call the guy. but they won't listen. I just want to be sure that the problem is not elsewhere. as far as humidity is concern it is low, all blinds are retracted so I should not feel a thing

 

Okay, so what is the RH, beside just saying its low.

 

latest on time 20 min !

 

You should record On-Off times along
with outside conditions from Noon to 7 pm
for a couple days.

Then you'll know how much oversized you are.

If your regular ON time is consistently 20 minutes in mid-afternoon
and IF _ OFF time is 10 minutes_, the system is effectively running at 66% of Peak Load.

 

Could be.

 

Every home should have a low cost 'INDOOR Humidity Monitor' ACU-RITE Digital only $8.94 at Walmart or over the Internet. It tells U if the humidity is in the 'OK' range, etc.
Check to see if it registers the temperature correctly; if not, take it back for a full refund.
If you want help...?
3) Outdoor condenser’s discharge-air-temperature ___°F
Subtract Outdoor air temperature: __°F
Outdoor Condenser Air-Temp-Split ___°F

4) Need the ‘Indoor’ percent of relative humidity - in the middle of the rooms or, at Return-Air inlet grilles ___%RH

5) Indoor Return Air Temperature __°F Indoor Supply-Air Temperature __°F
Subtract Indoor Supply-Air Temp from Return Air Temp __°F
Indoor temperature-split = __°F

“Reply with Quote” Fill the #numbers in where the blanks are. Easy Safe testing of your A/C or heat pump cooling performance for forum visitors to use.

 

I think the best route for me is increasing the capacity a little bit how do you suggest I do that

 

ok I have a lennox merv16 filtration system right now it is performing at 50-30 percent at the no cooling loads and 60-70 at peak loads as mention the home is 1614 sq ft . the current cooling load I am at is 39500 btu or 3.2 tons which from what I understand means a 3.5 ton system. home has basic insulation and windows tend to leak a little. if there is anything else you need let me know. as far as the duct system they added some new plenum added two return grills. I am pretty sure the duct system was not don right as well

 

ok

I have a lennox merv16 filtration system right now it is performing at 50-30 percent at the no cooling loads and
60-70 at peak loads as mention the home is 1614 sq ft .

home has basic insulation and windows tend to leak a little.

if there is anything else you need let me know.

MERV 16 is more than likely a flow & capacity performance killer,
unless you have appropriately sized 5" thick filters.

.... 3.5 Existing Unit
X.. 70% Peak Load
2.45 Required Size

 

ok I contacted the dealer for a heat load caLc sheet can I run it by you

 

SURE, I can spot any significantly abnormal values used in a calculation
in a matter of minutes given a Complete Report.

However, your best verification of
ACTUAL Heat Gains are
as addressed in COMMENT # 54 AND # 49 by U Darrell.