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Calculate the right HVAC size for your home in Washington, DC.
Design temperatures: 94°F summer / 27°F winter
Total conditioned living space
Cooling Load
46,782
BTU/hr
Heating Load
110,043
BTU/hr
Recommended Size
4 Ton
System Capacity
Est. Monthly Savings
$18
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.
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ASHRAE design conditions for 20235
Average costs in Washington
Typical homes in 20235
Federal Energy Efficiency Tax Credit
federal incentive • Expires 2032-12-31
Up to $2,000
HVAC service calls in Washington, DC typically range from $88 to $238 for standard repairs. Emergency service is available 24/7 at approximately $207.
Yes, most hvac work in Washington County requires a permit. The average permit cost is $75. Our licensed contractors handle all permit requirements.
Our network of 17+ licensed contractors in the Washington area offers average response times of 67 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 94°F and winter design temp of 27°F in 20235, proper sizing is critical. Use our Manual J calculator above for an estimate.