1. What is the $5000 Rule?

The $5000 rule is a simple guideline to help 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

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 the benefits of a new, more efficient system. Replacing too soon wastes money, while waiting too long can lead to higher energy bills and frequent repairs.

4. Using the Calculator

Tips: Enter your HVAC system's age in years and the estimated repair cost in dollars. The calculator will apply the $5000 rule and provide a recommendation.

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 your local climate.

Q2: What's the average lifespan of an HVAC system?
A: Typically 15-20 years, but this varies by system type, maintenance, and usage.

Q3: Should energy efficiency affect my decision?
A: Yes, newer systems are often significantly more efficient, which may justify earlier replacement.

Q4: What if my system is under warranty?
A: Warranty coverage may make repairs more cost-effective than the calculator suggests.

Q5: Are there other rules of thumb for HVAC replacement?
A: Some suggest replacing if repair costs exceed 50% of replacement cost, especially for systems over 10 years old.