HVAC Tools & Efficiency Calculators
Compare, plan, and optimize your home or shop heating and cooling systems
The ToolGrit HVAC suite brings together practical calculators and planning tools
for homeowners, DIY installers, and professionals looking to get the most from
their heating and cooling equipment. Each calculator runs entirely in your
browser—no logins, no data collection, and no slow load times.
Featured HVAC Tools
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Mini-Split Efficiency & Cost Calculator
— Compare heat pump performance vs. propane, natural gas, and fuel oil across outdoor temperatures.
Find your break-even point and estimate real-world savings before you buy. -
Heat Load from Bills Calculator
— Estimate your home’s true heating demand using fuel or electric usage data. Great for sizing new
HVAC systems or validating energy-efficiency upgrades. -
Energy ROI & Payback Analyzer
— (Coming soon) Model the payback time for heat pumps, insulation upgrades, or fuel conversions
using current energy prices and efficiency ratings.
Why use ToolGrit HVAC Calculators?
- Accurate, transparent calculations based on industry-standard energy formulas.
- No accounts, cookies, or tracking—everything runs locally in your browser.
- Clean PDF outputs for records, budgeting, or project documentation.
- Designed for fast loading, even on job-site or mobile connections.
Whether you’re planning a mini-split install, comparing propane vs. electric heating costs,
or estimating the impact of a new high-efficiency furnace, ToolGrit’s calculators
help you make confident, data-driven decisions before spending a dime.