What size unit (3 ton would be my guess) that they only want to install 1 return (12 supplies may be ok)? Does the system qualify for the $1500 tax credit (if you post full model numbers you were given I can check)? I'm not a big Goodman fan but if installed right should do the job well just like any other brand. Goodman tends to have good warranties.

sorry, its 4 ton unit. it does qualify of 1500 tax credit. may have another return put in at the other side of house. agree that installation is very important.

With that price, you won't get $1500, you only get 15% of the total price of the qualified items, 95% furnace and 15SEER air conditioning including labor and materials. At $6600, only $990 credit.

Gturay I believe you're mistaken. See link below. Even if the installed price were $5000, he would get the $1500 credit.

Here is a link that might be useful: Tax Credits

i live in fla. house is 2000 s/f. i am replacing another goodman that was put in the house before i bought it.

got a quote for the new 18 seer Goodman (4-Ton) two stage condenser with variable blower air handler. also, new ductwork(12 supply and 1 return) with grilles. installed for $6600.

the installer is a license contractor that was recommended from a builder friend i have.

met him; seems to know his stuff. i know its a great deal. wanting to know other people's input. thanks

The first procedure is to do everything possible to reduce all sources of heat-gain & heat-loss.

Before you do anything else, educate yourself enough to ensure that you request the proper things "be done in the proper order of sequence."

Checking ductwork & Airflow Checking Static Pressures is Critically Important. As is knowing the operating feet per minute (FPM) velocity & the CFM to each room & the Total CFM airflow.

Then have a manual "J" heat-gain / heat-loss load calc done, followed by a manual "S" for equipment sizing & then a manual "D" for proper ductwork sizing.

All registers, grilles, filter racks, & diffusers must be located & sized for optimal efficient performance of the system.
The correct sizing of residential air conditioning systems & ductwork is crucial to ensuring proper indoor space conditioning, equipment performance, and economical operation.

Unfortunately, many A/C contractors measure "correct sizing" by the system's ability to meet any indoor thermostat setting at any outdoor temperature.

That method of sizing will lead to inefficient operation for the vast majority of conditioning time.

Air conditioning systems "must be sized to meet typical or average indoor and outdoor conditions to ensure proper air mixing, filtration and dehumidification of indoor air across seasonal variations."

If 'might' then, be able to install a 3.5-Ton condenser instead of a 4-Ton? - udarrell

Here is a link that might be useful: Simple A/C Performance Checks Anyone Can Do