Measure
Use utility bills, room temperatures, humidity and an energy audit to identify the real weak points.
The Comfort Edit · US homes
A home that holds onto comfort.
Spend less energy staying warm in winter and cool in summer. Start with the fabric, airflow and controls—then size equipment around the improved home.
Evidence-ledWhole-year adviceSafety first
THE FABRIC-FIRST PRINCIPLEKeep useful heat where you need it.
The order matters
Your comfort roadmap
Four stages designed to reduce wasted spend and avoid treating symptoms.
Control
Tune schedules, thermostats, shading and ventilation before buying new equipment.
Seal safely
Address unintended air leakage while preserving mechanical ventilation and combustion safety.
Insulate
Prioritize continuous, correctly installed assemblies and resolve moisture sources first.
Evergreen home library
Explore all guides →Make every improvement count
START HERE8 min
Repair or replace HVAC?
Compare diagnosis, remaining life, installed replacement and five-year ownership cost.
Read the field guide →BUILDING ENVELOPEPROJECT GUIDE
Attic and whole-home insulation
Compare air sealing, target R-values, moisture safeguards and post-work verification.
Read the field guide →
BUILDING SCIENCE7 min
Air seal and insulate
Coordinate diagnostics, moisture control, ventilation and verified installation.
Read the field guide →
SYSTEM DESIGN7 min
Right-size the HVAC system
Use the improved home load before selecting replacement equipment.
Read the field guide →Hold the heat.
Insulation continuity, controlled ventilation and sensible heating schedules work as one system.
Compare insulation projects →Size cooling correctly.
Reduce solar and air-leakage loads first, then select equipment from a documented load calculation.
Central AC planning guide →