Look for the SEER2 (Seasonal Energy Efficiency Ratio) rating. The current federal minimum is often 14.5 SEER2 ; higher ratings (16–20+) mean lower monthly electric bills.
You must match the capacity (measured in tons or BTUs) of your existing indoor air handler. A 36,000 BTU unit equals 3 tons. buy ac condenser
Older units used R-22 (Freon), which is now phased out and expensive to refill. Modern units use R-32 or R-410A , with R-32 being more eco-friendly and efficient. Look for the SEER2 (Seasonal Energy Efficiency Ratio) rating
Reliable options include Goodman (value), Trane (premium durability), and Carrier (advanced technology). Car AC Condensers Trane (premium durability)