Knowing when to repair vs. replace your AC can save you thousands. Here are the 7 signs it is time for a new system.
1. Your AC Is Over 10-15 Years Old
Most AC systems last 10-15 years in Tucson's harsh climate. If your system is approaching this age and needs frequent repairs, replacement is usually more cost-effective.
2. Rising Energy Bills
If your TEP bills are climbing despite normal usage, your AC is losing efficiency. A new high-efficiency system can reduce cooling costs by 20-40%.
3. Frequent Repairs
“The $5,000 rule: If the age of your system multiplied by the repair cost exceeds $5,000, replace it. A 10-year-old system with a $600 repair = $6,000. Replace.”
4. Uneven Cooling
If some rooms are cold while others are hot, your system may be undersized, have duct issues, or be failing entirely.
5. Excessive Humidity
Your AC should dehumidify as it cools. If your home feels clammy, the system is not running properly.
6. Strange Noises or Smells
Grinding, screeching, or burning smells indicate serious mechanical problems that may not be worth repairing on an older system.
7. Using R-22 Refrigerant
R-22 (Freon) is phased out and extremely expensive. If your system uses R-22 and needs a recharge, replacement is almost always the better choice.
The Repair vs. Replace Decision
| Factor | Repair | Replace |
|---|---|---|
| System age | Under 10 years | Over 10 years |
| Repair cost | Under $500 | Over $1,500 |
| Efficiency | Still efficient | SEER under 14 |
| Refrigerant | R-410A | R-22 |
| Frequency | First major repair | Multiple repairs |
HVAC King offers free estimates for AC replacement.
(520) 539-9822