HomeCalc Pro Blog

The HomeCalc Pro Blog offers practical advice, expert tips, and data-driven insights to help you make smarter decisions for your home improvement and financial projects.

A piggy bank with a large crack in it, symbolizing the hidden financial costs of an oversized AC unit.

HVAC

The Hidden Costs of Oversized Air Conditioners (And How to Avoid Them)

Is your house cold and clammy? You may have an oversized AC. Learn the hidden costs of oversizing, from $800/year in wasted energy to cutting your AC's lifespan by 40%.

November 18, 2025•10 min read

A can of paint with a brush resting on top, set against a freshly painted wall.

Home Improvement

Paint Calculator Truth: Why 'Coverage' on the Can is Usually Wrong

Discover why the square footage on the paint can is a best-case scenario and how to calculate your real-world needs.

November 15, 2025•7 min read

HVAC

Manual J Explained: What Your HVAC Contractor Should (But Won't) Tell You

A deep dive into the industry-standard method for HVAC sizing that most homeowners have never heard of.

November 12, 2025•9 min read

An oversized air conditioner next to a small house, illustrating a sizing mistake.

HVAC

5 HVAC Sizing Mistakes That Cost Homeowners Thousands

Learn to identify and avoid the most common and costly mistakes contractors make when sizing new air conditioners and furnaces.

November 8, 2025•8 min read

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