Montgomery, Missouri HVAC Climate Zone

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

Climate Zone
4A
Winter Design
13°F
Summer Design
91°F
ZIP Codes
8

Montgomery HVAC Contractors: Get Your Free Manual J Report

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

Claim Free Report
No credit card required

Verify Your Montgomery ZIP Code

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

Montgomery covers 8 ZIP codes: 63333, 63350, 63351, 63359, 63361, 63363, 63384, 65069

Montgomery Design Temperatures

Official ASHRAE design temperatures for Montgomery, 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 Montgomery 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: 2020 IECC

Recommended HVAC Equipment for Montgomery

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 Montgomery

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

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

Join 10,000+ Montgomery contractors who trust AutoHVAC