1. What is Furnace Sizing?

Furnace sizing is the process of determining the appropriate heating capacity for a home based on square footage, insulation quality, and regional climate factors. Proper sizing ensures efficient heating during Ontario winters.

2. How Does the Calculator Work?

The calculator uses the furnace sizing formula:

Where:

• \( Home Area \) — Total living space in square feet
• \( Climate Factor \) — 40-60 BTU/ft²/hr for Ontario climate
• \( BTU/hr \) — British Thermal Units per hour (heating capacity)

Explanation: The formula accounts for home size and insulation quality to determine the optimal furnace capacity for efficient heating.

3. Importance of Proper Furnace Sizing

Details: Correct furnace sizing is crucial for energy efficiency, comfort, and system longevity. An oversized furnace cycles too frequently, while an undersized one struggles to maintain temperature.

4. Using the Calculator

Tips: Enter home area in square feet and select the appropriate climate factor based on your home's insulation quality. All values must be valid (area > 0).

5. Frequently Asked Questions (FAQ)

Q1: Why is furnace sizing important in Ontario?
A: Ontario's cold winters require properly sized furnaces for efficient heating and energy savings while maintaining comfort.

Q2: What climate factor should I choose?
A: Choose 40 for well-insulated homes, 50 for average insulation, and 60 for older or poorly insulated homes.

Q3: Are there other factors to consider?
A: Yes, ceiling height, window quality, home orientation, and number of occupants also affect heating requirements.

Q4: Should I get a professional assessment?
A: For precise sizing, consult an HVAC professional who can perform a Manual J calculation considering all factors.

Q5: What if my home has unusual features?
A: Homes with cathedral ceilings, large windows, or multiple stories may require adjustments to the basic calculation.