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● Free Tool

Repair or Replace? Let’s Do the Math.

Answer four quick questions and we’ll tell you whether repairing your current system still makes sense - or whether replacing it will save you money over time.

The “$5,000 rule”

The simplest way pros gut-check a repair is to multiply the age of the system by the cost of the repair. If the result is over $5,000, replacement usually makes more financial sense. A $400 fix on a 6-year-old unit is $2,400 - repair it. That same $400 repair on a 15-year-old unit is $6,000 - you’re better off putting that money toward a new, more efficient system. This tool runs that math for you and layers in the other factors that matter.

The R-22 factor

If your system still uses R-22 refrigerant (older “Freon” units), the math shifts hard toward replacement. R-22 production and import were phased out in the U.S. in 2020, so what’s left is scarce and expensive. A refrigerant-related repair on an R-22 system can cost more than the aging equipment is worth - and you’d be pouring money into a system on borrowed time.

Age and repair history

Most central AC and furnace systems last about 12–15 years. Past that, parts get harder to find and failures cluster. If you’ve had two or more repairs in the last couple of years, the system is telling you something. This tool weighs age and repair history alongside the cost math so the recommendation reflects the whole picture, not just one number.

We’ll give you the honest answer. Plenty of homes get another five good years from a smart repair. We only recommend replacement when the numbers truly favor it - and we’ll show you why.

● Common Questions

Repair or Replace Questions, Answered

Is it better to repair or replace your HVAC?

It comes down to age, repair cost, and refrigerant type. A minor repair on a system under about 10 years old is almost always worth it. Past 12 to 15 years, or when a big-ticket part like the compressor fails, replacement often wins because efficiency gains and reliability outweigh sinking money into aging equipment. The tool above weighs these factors for you.

What is the $5,000 rule for HVAC?

Multiply the system's age in years by the repair cost. If the result is over $5,000, replacement usually makes more sense; under that, repair is typically the smart call. A $400 fix on a 6-year-old unit is $2,400, so repair it; the same repair on a 15-year-old unit is $6,000, which points to replacement.

Is it worth fixing a 20-year-old AC unit?

Rarely, for anything major. At 20 years a unit is past its roughly 15-year service life, runs far less efficiently than a modern one, and likely uses phased-out R-22 refrigerant that makes repairs expensive. A small, cheap fix to get through a season can be fine, but a costly repair is usually money better applied to a replacement.

When should an HVAC be replaced instead of repaired?

Replace when the system is near or past its service life, when a major component (compressor, heat exchanger, or coil) fails, when it uses R-22, when repairs are getting frequent, or when the $5,000-rule math tips that way. Steadily climbing energy bills are another sign, since efficiency degrades with age.

Should I replace my 25-year-old HVAC system?

Usually yes. At 25 years the system is a decade past a typical AC's life, operates at a fraction of modern efficiency, and almost certainly uses R-22. Even if it still runs, a replacement typically pays back through lower energy bills and far better reliability.

What is the most common part to fail on an AC unit?

The run capacitor is the most common failure, an inexpensive part that stops the compressor or fan motor from starting and a quick, worthwhile fix. Contactors and fan motors are also common. The failure that changes the math is the compressor, which is costly enough to often justify replacement on an older system.

What is the average lifespan of an HVAC system?

With regular maintenance, central AC units last about 15 years and furnaces 15 to 20 in our climate. Heat pumps, which run year-round, often land around 12 to 15. Skipped maintenance, poor sizing, or hard use shortens those numbers, while annual tune-ups extend them.

● Next Step

Get an Honest Second Opinion, Free.

We’ll inspect the system, tell you straight whether to repair or replace, and hand you a flat-rate written quote - no pressure, no obligation.

916-320-4386 Request a Free Estimate
Common Questions

Frequently Asked Questions

Is it better to repair or replace your HVAC?
It comes down to age, repair cost, and refrigerant type. A minor repair on a system under about 10 years old is almost always worth it. Past 12 to 15 years, or when a big-ticket part like the compressor fails, replacement often wins because efficiency gains and reliability outweigh sinking money into aging equipment. The tool on this page weighs these factors for you.
What is the $5,000 rule for HVAC?
Multiply the system's age in years by the repair cost. If the result is over $5,000, replacement usually makes more sense; under that, repair is typically the smart call. A $400 fix on a 6-year-old unit is $2,400, so repair it; the same repair on a 15-year-old unit is $6,000, which points to replacement.
Is it worth fixing a 20-year-old AC unit?
Rarely, for anything major. At 20 years a unit is past its roughly 15-year service life, runs far less efficiently than a modern one, and likely uses phased-out R-22 refrigerant that makes repairs expensive. A small, cheap fix to get through a season can be fine, but a costly repair is usually money better applied to a replacement.
When should an HVAC be replaced instead of repaired?
Replace when the system is near or past its service life, when a major component (compressor, heat exchanger, or coil) fails, when it uses R-22, when repairs are getting frequent, or when the $5,000-rule math tips that way. Steadily climbing energy bills are another sign, since efficiency degrades with age.
Should I replace my 25-year-old HVAC system?
Usually yes. At 25 years the system is a decade past a typical AC's life, operates at a fraction of modern efficiency, and almost certainly uses R-22. Even if it still runs, a replacement typically pays back through lower energy bills and far better reliability.
What is the most common part to fail on an AC unit?
The run capacitor is the most common failure, an inexpensive part that stops the compressor or fan motor from starting and a quick, worthwhile fix. Contactors and fan motors are also common. The failure that changes the math is the compressor, which is costly enough to often justify replacement on an older system.
What is the average lifespan of an HVAC system?
With regular maintenance, central AC units last about 15 years and furnaces 15 to 20 in our climate. Heat pumps, which run year-round, often land around 12 to 15. Skipped maintenance, poor sizing, or hard use shortens those numbers, while annual tune-ups extend them.
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