Calculate HVAC sizing using simplified Manual J methodology. Determine BTU needs, tonnage, and system cost for 5 HVAC types including central air, heat pump, mini-split, and geothermal. Accounts for climate zone, insulation quality, and home configuration.
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A rough estimate is 20-30 BTU per square foot, varying by climate. A 2,000 sqft home in a hot climate needs approximately 50,000-60,000 BTU. Cold climates need more for heating. Proper sizing requires considering insulation, windows, and occupancy.
AC is measured in tons (1 ton = 12,000 BTU). A 2,000 sqft well-insulated home in a moderate climate typically needs a 3-3.5 ton system. Oversizing wastes energy and causes humidity problems; undersizing runs constantly without adequate cooling.
Central AC + gas furnace: $5,000-12,000. Heat pump: $4,000-10,000. Ductless mini-split: $3,000-8,000 per zone. Geothermal: $15,000-35,000. Add $3,000-7,000 for new ductwork if needed. Prices include installation.
The HVAC Calculator is a free online tool that lets you calculate hvac system sizing (btu/tonnage) and cost by climate zone and home size. It is part of NexTool's collection of free tools designed to help you work faster and more efficiently.
Using the HVAC Calculator is simple: visit the tool page, enter your data or input into the provided fields, and get instant results. No downloads, installations, or sign-ups are required. The tool runs directly in your web browser for maximum convenience.
Yes, the HVAC Calculator is 100% free to use with no limitations. There is no registration required, no daily usage caps, and no hidden fees. You can use it as many times as you need.
The HVAC Calculator uses industry-standard formulas and algorithms to deliver reliable results. While the tool is designed for accuracy, results should be used as estimates and guidance. For critical decisions, always consult a qualified professional.
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Calculate HVAC sizing using simplified Manual J methodology. Determine BTU needs, tonnage, and system cost for 5 HVAC types including central air, heat pump, mini-split, and geothermal. Accounts for climate zone, insulation quality, and home configuration.
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| Item | Cost |
|---|---|
| Air Source Heat Pump (5.5 ton) | $22,000 |
| Installation Labor | $6,600 |
| Smart Thermostat | $250 |
| Permits & Inspections | $300 |
| Total | $29,150 |
| System | SEER | $/Ton | Life | Notes |
|---|---|---|---|---|
| Central AC + Gas Furnace | 16 | $3,500 | 18 yrs | Most common, reliable, good for cold climates |
| Air Source Heat PumpSelected | 18 | $4,000 | 16 yrs | Heats and cools, efficient in mild climates |
| Ductless Mini-Split | 22 | $4,500 | 20 yrs | No ductwork needed, zoned control |
| High-Efficiency Gas + AC | 20 | $5,000 | 20 yrs | Premium efficiency, lower operating costs |
| Geothermal Heat Pump | 30 | $8,000 | 25 yrs | Highest efficiency, highest upfront cost |