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Calculate the right HVAC size for your home in Waipahu, HI.
Design temperatures: 92°F summer / 20°F winter
Total conditioned living space
Cooling Load
42,820
BTU/hr
Heating Load
144,730
BTU/hr
Recommended Size
4 Ton
System Capacity
Est. Monthly Savings
$16
High-efficiency upgrade
Estimated System Cost
Equipment + professional installation
$14,000 - $26,000
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 00002
Average costs in Waipahu
Typical homes in 00002
Federal Energy Efficiency Tax Credit
federal incentive • Expires 2032-12-31
Up to $2,000
HVAC service calls in Waipahu, HI typically range from $85 to $235 for standard repairs. Emergency service is available 24/7 at approximately $203.
Yes, most hvac work in Waipahu County requires a permit. The average permit cost is $75. Our licensed contractors handle all permit requirements.
Our network of 15+ licensed contractors in the Waipahu area offers average response times of 45 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 92°F and winter design temp of 20°F in 00002, proper sizing is critical. Use our Manual J calculator above for an estimate.