Allowable (Legal) Limits for Carbon Monoxide

Occupational Safety & Health Administration, USA (OSHA) (for industrial situations) -

Permissible Exposure Limit (PEL, by TWA) - 50 ppm, 8 hrs.
Old PEL Standard (by TWA) - 35 ppm, 8 hrs.
Threshold Limit Value (TLV, by TWA) - 25 ppm (29 mg/cu. m)
(recommended by American Conference of Governmental & Industrial Hygienists ACGIH)
Ceiling (max. value, 15 min.) - 200 ppm (229 mg/cu. m)

MI Occupational Safety & Health Administration (MIOSHA) -

PEL (Industry, by TWA) - 35 ppm, 8 hrs. (38.5 mg/cu. m)
PEL (Construction, by TWA) - 50 ppm, 8 hrs. (55 mg/cu. m)
Ceiling (max. value) - 200 ppm (229 mg/cu. m)

Environmental Protection Agency, USA (EPA) -

Domestic, outdoor air, all ages (TWA) - 9 ppm*, 8 hrs.
Domestic, outdoor air, all ages (TWA) - 35 ppm, 1 hr.

World Health Organization (WHO) -

Domestic, outdoor air, all ages (TWA) - 9 ppm*, 8 hrs.

American Society of Heating, Refrigeration & Air Conditioning Engineers (ASHRAE) -

Indoor air (leakage at a heat register) - 9 ppm

American Gas Association -

Indoor air (leakage at a heat register) - 15 pm


TWA - Computed by making measurements at intervals over 8 hours, then adding the sums of the concentrations and the intervals, and dividing by 8 hours (480 min.). * Based on several published studies of people with coronary ischemic disease showing ECG changes during moderate exercise when breathing concentrations of CO giving 3% COHb.
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Address:  7757 Hwy 70 Suite #101 Memphis, TN 38133
Phone:  (901) 373-3636
24 Hour Emergency Service Available
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Hours of Operation
Monday:   7:00am - 6:00pm
Tuesday:   7:00am - 6:00pm
Wednesday:   7:00am - 6:00pm
Thursday:   7:00am - 6:00pm
Friday:   7:00am - 6:00pm
Saturday:   7:00am - 6:00pm
Sunday:   7:00am - 6:00pm
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Contact Information
 
Address:  7757 Hwy 70 Suite #101 • Memphis TN 38133
Phone: (901) 373-3636
Hours of Operation
Monday - Sunday:   7:00am - 6:00pm
24/7 Emergency Service Available
For Furnace repair service in Memphis TN, find us our Google Gauranteed!
Connect With Us
trust our techs with your next Furnace repair in Germantown TN
For Furnace repair service in Memphis TN, find us on Google!
For Furnace repair in Memphis TN, like us on Facebook!
Payment Options
For Furnace in Memphis TN, we accept most major credit cards.
We accept cash for Heating repair service provided in Germantown TN.
We accept check for Furnace repair service provided in Collierville TN.
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