❓ FAQ
+How many BTU per square foot?
20-25 BTU/sq ft for mild climates, 30-40 for moderate, 40-60 for extreme heat or cold.
+What size AC do I need?
Rough guide: 1 ton per 500-600 sq ft. Actual sizing requires Manual J load calculation for accuracy.
+How often to change filters?
1" filters: every 1-3 months. 4" filters: every 6-12 months. Homes with pets: change more frequently.
+What SEER rating should I get?
Minimum is 14-15 SEER (varies by region). 16-20 SEER offers good efficiency. 20+ SEER is premium with highest savings.