Brunswick, Virginia HVAC Climate Zone

Brunswick is located in IECC Climate Zone 4A (Mixed - Humid). Get accurate Manual J load calculations with official design temperatures for Brunswick.

Climate Zone
4A
Winter Design
13°F
Summer Design
91°F
ZIP Codes
12

Brunswick HVAC Contractors: Get Your Free Manual J Report

Climate Zone 4A requires precise load calculations. Upload your Brunswick blueprint and get a professional Manual J report in 60 seconds— first report is FREE. Pre-loaded with Brunswick's exact design temperatures (13°F winter / 91°F summer).

Claim Free Report
No credit card required

Verify Your Brunswick ZIP Code

Enter your ZIP code to confirm it's in Brunswick and get climate zone details.

Brunswick covers 12 ZIP codes: 23821, 23843, 23845, 23856, 23857, 23868, 23876, 23887, 23889, 23893 and 2 more

Brunswick Design Temperatures

Official ASHRAE design temperatures for Brunswick, used for accurate Manual J load calculations.

Winter 99% Design Temp
13°F
Summer 1% Design Temp
91°F
Summer Wet Bulb
75°F

IECC Requirements for Zone 4A

Minimum insulation and window requirements for Brunswick per IECC 2021.

Wall Insulation:R-20
Roof/Ceiling:R-49
Floor Insulation:R-19
Window U-Factor:0.32
Window SHGC:0.4

Energy Code: 2021 IECC

Recommended HVAC Equipment for Brunswick

Heating Systems

Gas furnace (90%+ AFUE)
Heat pump
Typical AFUE
92-96%

Cooling Systems

AC (14-16 SEER)
Heat pump
Typical SEER
14-16 SEER

Get Free Manual J Calculations for Brunswick

Upload your Brunswick blueprint and get a professional Manual J load calculation using official Zone 4A design temperatures. First report is FREE.

Brunswick design temps
Zone 4A compliant
Ready in 60 seconds
Upload Blueprint → Get Free Report

Join 10,000+ Brunswick contractors who trust AutoHVAC