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Calculate the right HVAC size for your home in Seattle, WA.
Design temperatures: 97°F summer / 26°F winter
Total conditioned living space
Cooling Load
52,724
BTU/hr
Heating Load
111,565
BTU/hr
Recommended Size
5 Ton
System Capacity
Est. Monthly Savings
$20
High-efficiency upgrade
Estimated System Cost
Equipment + professional installation
$15,750 - $29,250
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.
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ASHRAE design conditions for 98116
Average costs in Seattle
Typical homes in 98116
Federal Energy Efficiency Tax Credit
federal incentive • Expires 2032-12-31
Up to $2,000
HVAC service calls in Seattle, WA typically range from $141 to $291 for standard repairs. Emergency service is available 24/7 at approximately $287.
Yes, most hvac work in Seattle County requires a permit. The average permit cost is $150. Our licensed contractors handle all permit requirements.
Our network of 21+ licensed contractors in the Seattle area offers average response times of 66 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 97°F and winter design temp of 26°F in 98116, proper sizing is critical. Use our Manual J calculator above for an estimate.