📏 How to Size Your HVAC System: A DIY Guide for Homeowners

Choosing the right HVAC system isn’t just about brand or features—it starts with proper sizing. An oversized unit wastes energy and short-cycles, while an undersized system struggles to keep up. Here’s how to get it right the first time.

đź§® Step 1: Know Your Square Footage

Start by measuring the total square footage of the space you want to heat and cool. For most homes, this includes all conditioned areas—living rooms, bedrooms, kitchens, and hallways.

Home Size (sq ft) Recommended BTU
600–1,000 18,000 (1.5 Ton)
1,000–1,500 24,000 (2 Ton)
1,500–2,000 36,000 (3 Ton)
2,000–2,500 48,000 (4 Ton)
2,500–3,000 60,000 (5 Ton)

Tip: For Corpus Christi’s hot, humid climate, consider sizing slightly higher or choosing a system with inverter technology for better humidity control.

đź§± Step 2: Consider Insulation & Windows

A well-insulated home with double-pane windows may need less BTU per square foot. Older homes with poor insulation or lots of sun exposure may need more. This is where really pays off.

🌡️ Step 3: Factor in Climate Zone

South Texas is in a hot-humid climate zone. That means your system needs to handle high cooling loads and moderate heating. The is designed for exactly this—delivering reliable performance even in extreme heat.

đź§° Step 4: Match the Right System

Once you know your BTU needs, match them to the right system:

  • – Ideal for homes up to 1,800 sq ft
  • – Best for homes up to 2,400 sq ft

Both systems feature , , and .

🛠️ Final Thoughts

Sizing your HVAC system doesn’t have to be complicated. With a little math and the right tools, you can confidently choose a system that keeps your home comfortable year-round. Still unsure? Contact us for a free consultation or explore our full .