Quote:
Originally Posted by Packer Fan
I will translate toymeistereese to English - Don't do a thing, none of it matters.
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Not quite, I noted it is worthwhile to upgrade the HVAC to a two stage unit. The standard, spec HVAC is a one stage system.
The Federal requirement for new HVAC units is 13 SEER, TV installs 14 SEER. The upgrade is 16 SEER.
Let me slow the roll here. SEER is Seasonal Energy Efficiency Rating. Or more specifically it is is how many BTUs per watt that unit can cool.
By itself 14 vice 16 SEER isn't insignificant. It is has 14.3% more cooling efficiency. It has bonus savings because the two speed system is better at dehumidification, this usually means you will keep the drier air home warmer.
Between the higher SEER unit and two degrees higher temperature you'll save 20% of your heating and cooling costs or slightly more than 10% of your total electricity usage. No other savings measure approaches this. Radiant barrier, for example saves 1.5% (at best) and only during the cooling season.
Now we could get into a discussion if a even higher SEER. unit would be worthwhile. That really exceeds the depth needed for this post. At design you can choose a two speed HVAC. It is well worth it for energy savings and comfort.
HVAC costs are by far the greatest cost in your electric bill. The gas bill, if you have gas, is insignificant.
You will not be offered any way to save water at the design stage, so it is not relevant here.