hello, just curious how many people really do a heatload/heatgain calculation before installing a new unit, I have been using manual-J because that is what i was taught in school.
heatload/heatgain
richard
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It would be interesting to see some surveys on how many do a heat-gain/heat-loss of any kind.
I am concerned that it would be a very low percentage of them that do it.
The same thing goes for checking for proper air flow through the E-Coil & to each room. Everything is roughshod guesswork unless things are done right & in the proper sequence. - udarrell
I am concerned that it would be a very low percentage of them that do it.
The same thing goes for checking for proper air flow through the E-Coil & to each room. Everything is roughshod guesswork unless things are done right & in the proper sequence. - udarrell
I do a quick heat loss
Beenthere Im like you and I will do quick heatloss first and if numbers are close I will take time to do thorough heat lost. It can take me 1.5 hour to do proper heat loss. The city is asking for proper heat loss on new construction 6 to 8 sheets long depending on levels. I do offer 100% customer satisfaction for 1 year and had to increase size 3 times in last 2 years. Just about all other contractors oversizes A/Cs in my area. We did alot of A/Cs last year over 160 stopped counting.
Beenthere Im like you and I will do quick heatloss first and if numbers are close I will take time to do thorough heat lost. It can take me 1.5 hour to do proper heat loss. The city is asking for proper heat loss on new construction 6 to 8 sheets long depending on levels. I do offer 100% customer satisfaction for 1 year and had to increase size 3 times in last 2 years. Just about all other contractors oversizes A/Cs in my area. We did alot of A/Cs last year over 160 stopped counting.
J = Required in FL
FBC Section 13-607
.... Cooling and heating design loads, for the purpose of sizing HVAC equipment and designing HVAC systems, shall be determined for the dwelling spaces (typically rooms or zones) served by each piece of equipment in accordance with ACCA Manual J, ACCA Manual N, or the ASHRAE Cooling and Heating Load Calculation Manual ...
It's the Law in Florida for New Constructionhello, just curious how many people really do a heat load/ heat gain calculation before installing a new unit, I have been using manual-J because that is what i was taught in school.
FBC Section 13-607
.... Cooling and heating design loads, for the purpose of sizing HVAC equipment and designing HVAC systems, shall be determined for the dwelling spaces (typically rooms or zones) served by each piece of equipment in accordance with ACCA Manual J, ACCA Manual N, or the ASHRAE Cooling and Heating Load Calculation Manual ...
Until recently, there weren't any 1 ton central A/C's.
We do a manual J,D and S on EVERY new const job and 95% of all retro's.hello, just curious how many people really do a heatload/heatgain calculation before installing a new unit, I have been using manual-J because that is what i was taught in school.
TESP reading are taken on all retro's before and after. All first time maint also get TESP taken.
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Hey, richard,
ain't you the one who's bidding on a diy unit on ebay?
ain't you the one who's bidding on a diy unit on ebay?
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I know of someone that does the heatload or the internet, if you fill out their form with the info they need, for somewhere like $75 bucks and it is acca certified. Manuel J heat/load/loss
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