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If your system still uses R-22 (Freon), replacement is strongly recommended. R-22 was officially phased out in 2020, and remaining supply prices have skyrocketed — sometimes $100–$175 per pound. Switching to a modern R-410A or R-32 system eliminates this cost entirely.
Your air conditioner doesn't come with an expiration date stamped on the side. But just like any major appliance, there comes a point where keeping it alive costs more than starting fresh. The tricky part? Knowing when you've crossed that line.
We've been installing and servicing AC systems across New York for over 15 years, and we see the same patterns repeat. Here are the five clearest signals that your unit is telling you it's time to move on — and what to do about it.
Modern systems with SEER 20+ dramatically cut your cooling costs.
Wi-Fi thermostats, zoning, and app control come standard.
No more R-22 surcharges — new units use R-410A or R-32.
Peace of mind with extended coverage on parts & compressor.
1. Your Energy Bills Keep Climbing. If your electricity bill has jumped 20–30% compared to last year — and your usage hasn't changed — your AC is likely losing efficiency.
2. Repairs Are Becoming a Habit. The "$300 here, $500 there" pattern adds up fast. Industry experts recommend the 50% rule: if a single repair costs more than 50% of a new system, it's time to replace.
3. Strange Sounds & Odors. Grinding, squealing, or banging signal failing bearings, loose parts, or a dying compressor.
4. Hot Spots & Uneven Cooling. When your AC can't maintain consistent temperatures, the compressor or refrigerant charge may be failing.
5. Your System Is Over 10–15 Years Old. AC units have a typical lifespan of 10–15 years. A 15-year-old unit may operate at only 60% of its original efficiency.
If your electricity bill has jumped 20–30% compared to last year — and your usage hasn't changed — your AC is likely losing efficiency. Older compressors work harder to produce the same cooling, consuming significantly more power.
The "$300 here, $500 there" pattern adds up fast. Industry experts recommend the 50% rule: if a single repair costs more than 50% of a new system — or you've called for service 3+ times this year — it's time to replace.
Grinding, squealing, rattling, or banging? These aren't quirky personality traits — they signal failing bearings, loose parts, or a dying compressor. Musty or burning smells can indicate mold in ducts or electrical issues.
If you're experiencing two or more of these signs, here's what we recommend:
The best time to replace your AC? Before it fails on the hottest day of the year. Plan ahead and invest in a system that'll keep your home comfortable for the next 15+ years.
A good HVAC company won't push you toward replacement if a repair makes sense — and at Art HVAC, we always give you both options with transparent pricing.
* Based on a 2,000 sq ft home in a moderate climate zone, cooling 6 months/year. Actual costs vary.
AC Replacement
Find answers to common questions about our HVAC, plumbing, and refrigeration services.
A new residential AC system typically costs between $3,500 and $7,500 installed, depending on the size, efficiency rating, and brand.
A standard replacement takes 4–8 hours for a straightforward swap. If ductwork modifications are needed, it may take 1–2 days.
Yes! Many utility companies offer rebates for high-efficiency systems. Federal tax credits of up to $2,000 may also be available for qualifying ENERGY STAR equipment.
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