New Construction- Zone?, AC/Furnace or Heat Pump

andy1111September 29, 2012

Need help and thoughts on HVAC.

AC/Furnace vs. heat pump? (heat pumps never seem to heat)

Zoned vs. 3 seperate systems?

Space for outside unit is just 36" from building to property line.

NWFlorida, Coastal Area, 3 Levels

1st floor-800sf Concrete/CMU

2nd floor-815sf 2x6 frame

3rd floor-545sf 2x6 frame

Option 1- Rheem

3.5 ton 13 SEER 13AJN42A01 AC split system

RGPS07EAMGF Furnace

Coil RCFLHM482KC

Arzel 2 zone system

1.5 ton 13 SEER 13PJL180, RHSLHM1817JA Heat Pump split system

$13,199

Option 2-Rheem

3 Heat Pumps, one on each floor

1.5 & 2 ton, 14 SEER Heat Pumps with RHLL series air handler

$15,481

Option 3-Bryant

213BNA030000 Legacy 13 Heat Pump 2.5 TON Unit

FB4CNF030T00 FAN COIL X13 PURON STD TIN PLT

FB4-5-1 00000 5 KW HTR 230-1P

213BNA036000 Legacy 13 Heat Pump 3 Ton Unit

FB4CNF036T00 FAN COIL X13 PURON STD TIN PLT

FB4-10-1 00000 10 KW HTR 230-1P

hz322

TH5220D1003 TSTAT (3)

ARD14 AUTO RND DMPR

SPRD12 STATIC DMPR

All Ducts (Supply, Returns, Grills) called for in the plans

$11,400

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david_cary

First - Trane (Bryant) has the best rep in the coastal areas. I recently built in a coastal area and put 2 trane heat pumps in for 2 floors.

I also built a larger house with less tonnage than all your quotes. And I had less insulation. Windows and orientation are what matters but 5.5 tons for 2100 sqft is very high - especially for new construction.

The number one problem with HVAC quotes is oversizing...

I'd probably go with 2 units but there are other details that matter more.

As far as furnace, you don't mention what you have available. I suspect that NG is pretty rare in Fl and that is the only fuel where a furnace would make sense. If you don't have NG, you would be a fool to put in a furnace.

    Bookmark   September 29, 2012 at 3:57PM
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ryanhughes

Trane and Bryant are not the same product, although Trane and American Standard are. Carrier and Bryant are the same. Differences between sister brands are typically only cosmetic and sometimes warranty.

    Bookmark   September 29, 2012 at 7:08PM
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david_cary

Oops - my bad. I must have had a cocktail already....

Coastal = Trane/AS.

    Bookmark   September 30, 2012 at 3:20PM
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