Professional opinion please

[stymied47]

We have had our retirement home constructed and have run into some problems. One of which is the HVAC. We have had three contracters come in with pretty much the same concensus.
1. Replace the second floor 2 ton evaporater coil with a 2.5 ton evaporater coil and thermal expansion valve to match the existing 2.5 ton air conditioner.
2. Replace the existing first floor duct system with a sheet metal trunk system with flex duct branch lines.
3. Replace first floor 3 ton split system with a 3.5 ton system.

We would like to locate an impartial engineer or an inspection person to steer us in the right direction. Any help would be gratefully appreciated.

We are located on the outer banks of North Carolina

[dash]

1.What brand and model,are they positive it's a 2 ton coil and 2.5 ton outdoor unit?If you need 2.5 tons ,be sure the duct system is sized correctly.


2.Where are the ducts located,floor,between floors???If accessable we find that we can modify ducts without starting over almost everytime.


3.Be sure it needs it,and the ducts are sized correctly.

Sorry no idea of who you can get as a third party expert.

[stymied47]

Dash,
The entire system is a York,three techs say that it's a 2.5 ton outside and a 2 ton inside.

What I really need is an engineer to tell me what to do on an inparshal nots.

[dash]

If that's they case ,I'd think they would correct it.

Most Engineers are not well versed in residential load calculations,here's the website of one of our forum members in your area.

http://www.tradewindsheatandcool.com/

I'd call and see if he will help you out,he's sounds like he would have the knowledge you need.

[stymied47]

Dash,
Thank you for the reply,
Spoke to Al and he is on his way over today(saturday)to size up our problem.

[dan sw fl]

Originally posted by dash
Most Engineers are not well versed in residential load calculations, ...

Nearly all mechanical engineers and reputable contractors in FL are _well versed_ in load analysis.

EXPERIENCE in equipment selection and
duct layout design
are priceles$
in "doing it right the 1st time".