"Energy efficient" is on every builder's brochure. The differences that matter are measurable, and they're mostly invisible once the drywall goes up.
The Envelope
Insulation values, air sealing at every penetration, and a continuous thermal barrier. A leaky envelope makes every other efficiency measure work harder for less result. This is where the biggest gains live and where corners are most often cut.
Glazing
Low-E coatings, gas fills, and frame construction. In hot markets the priority is rejecting solar heat gain; the right specification differs between Phoenix, Dallas, and Tampa, and it should.
HVAC Sizing and Duct Sealing
An oversized system short-cycles, dehumidifies poorly, and wears out early. Correctly sized equipment paired with sealed and tested ductwork delivers the capacity you paid for to the rooms you're actually in.
Reading a HERS Score
HERS is an index where a reference home built to code scores 100 and lower is better. A score of 60 means the home is projected to use roughly 40 percent less energy than the reference. It's produced by an independent rater who tests the actual house, not a brochure claim.
