1. What is the \$5000 Rule?

The \$5000 rule is a simple guideline to help determine whether to repair or replace an HVAC system. If the product of your system's age (in years) and repair cost exceeds \$5000, replacement is typically recommended.

2. How Does the Calculator Work?

The calculator uses the simple formula:

Where:

• \( Age \) — Age of HVAC system in years
• \( Repair Cost \) — Estimated repair cost in dollars
• \( \$5000 \) — The threshold value

Explanation: This rule accounts for both the diminishing returns of repairing older systems and the increasing likelihood of future repairs.

3. Importance of the \$5000 Rule

Details: This rule helps homeowners make cost-effective decisions about HVAC maintenance, balancing repair costs against the benefits of a new, more efficient system.

4. Using the Calculator

Tips: Enter your HVAC system's age in years and the estimated repair cost in dollars. The calculator will determine whether repair or replacement is more economical.

5. Frequently Asked Questions (FAQ)

Q1: Is the \$5000 rule always accurate?
A: It's a guideline, not an absolute rule. Consider other factors like system efficiency, maintenance history, and future plans for the property.

Q2: What if my result is close to \$5000?
A: Results near the threshold (e.g., \$4500-\$5500) may warrant professional consultation for a more detailed analysis.

Q3: Does this account for energy savings from new units?
A: No, this is purely a cost comparison. Newer units often have significant energy savings that could justify earlier replacement.

Q4: How accurate should the repair cost estimate be?
A: Use a professional estimate when possible. Rule-of-thumb estimates may not account for all potential repair costs.

Q5: What's the typical lifespan of an HVAC system?
A: Most systems last 15-20 years with proper maintenance, but efficiency declines significantly after 10-12 years.