Veelgestelde vragen
Everything you need to know about choosing, installing, and maintaining air conditioners — answered by our experts.
What size air conditioner do I need?
The general rule is 20 BTU per square foot. Factors like ceiling height, sun exposure, climate zone, and occupants affect the requirement. Use our BTU Calculator for a personalized recommendation.
How often should I clean my AC filter?
Window and portable units: every 2 weeks during heavy use. Central HVAC 1-inch filters: monthly. 4-inch filters: 3-6 months. Mini-split: every 2-4 weeks.
Which is more efficient: window AC or mini-split?
Mini-splits are significantly more efficient with SEER ratings of 20-30 vs 10-15 for window units. However, mini-splits cost more upfront.
Can I install a mini-split myself?
Some brands offer DIY-friendly models with pre-charged lines. You still need a licensed electrician for the dedicated circuit.
Why is my AC leaking water?
Common causes: clogged condensate drain, dirty filter causing ice buildup, or incorrect installation angle for window units.
Do portable ACs really work?
Yes, but less efficient than window ACs or mini-splits. Single-hose models lose 30-40% efficiency. Dual-hose models perform much better.
What does SEER rating mean?
SEER measures cooling efficiency over a season. Higher SEER = lower costs. Minimum for new central AC is 14-15 SEER.
Should I cover my outdoor unit in winter?
Generally no. Full covers trap moisture. You can place plywood on top to deflect debris. Heat pumps should never be covered.
How long do air conditioners last?
Window: 8-12 years, central: 15-20 years, mini-split: 12-20 years with proper maintenance.
Central AC or multiple window units?
3+ rooms, 8+ hours daily: central is cheaper per BTU. 1-2 rooms: window or mini-split is more economical.