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PARS Radon Estimator (Utah Model)
PARS Radon Estimator
Utah Model Annualized Radon Level Calculator
1. Test Parameters
Raw Result (pCi/L)
Test Duration
48-Hour Real Estate Test
10-Day Short-Term Test
30-Day Mid-Term Test
90-Day Long-Term Test
Month Test Was Conducted
January (1.50)
February (1.45)
March (1.30)
April (1.15)
May (1.05)
June (1.00)
July (1.00)
August (1.05)
September (1.15)
October (1.25)
November (1.40)
December (1.50)
Select 3 Months Spanned by 90-Day Test
Jan (1.50)
Feb (1.45)
Mar (1.30)
Apr (1.15)
May (1.05)
Jun (1.00)
Jul (1.00)
Aug (1.05)
Sep (1.15)
Oct (1.25)
Nov (1.40)
Dec (1.50)
Jan (1.50)
Feb (1.45)
Mar (1.30)
Apr (1.15)
May (1.05)
Jun (1.00)
Jul (1.00)
Aug (1.05)
Sep (1.15)
Oct (1.25)
Nov (1.40)
Dec (1.50)
Jan (1.50)
Feb (1.45)
Mar (1.30)
Apr (1.15)
May (1.05)
Jun (1.00)
Jul (1.00)
Aug (1.05)
Sep (1.15)
Oct (1.25)
Nov (1.40)
Dec (1.50)
Calculates average seasonal factor across 90-day window.
2. Structural Factors (I2 Calibration)
Structure Type
Single-Family Detached
Townhouse / Rowhouse
Duplex / Multi-Family (Ground Unit)
Condo - Ground Floor / Basement
Condo - 2nd Floor or Higher
Foundation / HVAC
Full Finished Basement w/ Forced Air
Unfinished Basement / Slab-on-Grade
Crawlspace / Elevated Slab
Home Age / Construction Era
Built 2010+ (Airtight / High Stack)
Built 1980 – 2009 (Standard)
Built Pre-1980 (Draftier Envelope)
Exterior Finish / Envelope
Full Stucco / Brick / Masonry
Vinyl / Wood Siding
Calculated House Multiplier (I2):
1.40
Automatically computed from structure, foundation, age, and exterior finish options above.
Calculate PARS Estimate
PARS Final Annual Estimate
0.0 pCi/L
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About Utah Radon Coalition
About Radon Navigator™
TrueLevel™ Free Radon Testing Program
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