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Calculate the right HVAC size for your home in Austin, TX.
Design temperatures: 107°F summer / 47°F winter
Total conditioned living space
Cooling Load
72,534
BTU/hr
Heating Load
51,810
BTU/hr
Recommended Size
5+ Ton (Multi-zone recommended)
System Capacity
Est. Monthly Savings
$27
High-efficiency upgrade
Estimated System Cost
Equipment + professional installation
$22,750 - $42,250
Before rebates and incentives
This is a simplified estimate based on Manual J principles. An on-site assessment by a licensed HVAC contractor is required for accurate sizing. Factors like ductwork condition, air sealing, and specific window types affect the final recommendation.
By using this tool or submitting your information, you consent to be connected to a vetted local professional in our network. You may receive calls or texts at the number provided. Standard message and data rates may apply.
ASHRAE design conditions for 78751
Average costs in Austin
Typical homes in 78751
Federal Energy Efficiency Tax Credit
federal incentive • Expires 2032-12-31
Up to $2,000
HVAC service calls in Austin, TX typically range from $96 to $246 for standard repairs. Emergency service is available 24/7 at approximately $219.
Yes, most hvac work in Austin County requires a permit. The average permit cost is $75. Our licensed contractors handle all permit requirements.
Our network of 27+ licensed contractors in the Austin area offers average response times of 52 minutes. Emergency service is available 24/7.
HVAC sizing depends on your home's square footage, insulation, and local climate. With a summer design temperature of 107°F and winter design temp of 47°F in 78751, proper sizing is critical. Use our Manual J calculator above for an estimate.