1. What is the $5000 HVAC Replacement Rule?

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

2. How Does the Calculator Work?

The calculator uses the $5000 rule formula:

Where:

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

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

3. Importance of HVAC Replacement Timing

Details: Proper timing of HVAC replacement balances repair costs against new system efficiency gains, reliability improvements, and potential energy savings.

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 cost-effective.

5. Frequently Asked Questions (FAQ)

Q1: Is the $5000 rule always accurate?
A: It's a guideline, not an absolute rule. Consider system efficiency, maintenance history, and future needs as well.

Q2: What if my system is very old but repair is cheap?
A: Even if (Age × Cost) < 5000, very old systems (15+ years) may still warrant replacement for efficiency gains.

Q3: Does this account for energy savings?
A: No, this is purely cost-based. Newer systems typically offer 20-40% energy savings that should be factored in.

Q4: What about warranty coverage?
A: If repair is covered under warranty, the effective cost is $0 for that calculation.

Q5: Should I consider refrigerant phase-outs?
A: Yes, if your system uses R-22 or other phased-out refrigerants, replacement may be more urgent.