Appliance and Air Care Experts has certified technicians to take care of your AC installation near Rockwall TX.
Air Conditioning | Heating | Major Appliances
in Dallas, Collin, Rockwall Counties
For Immediate Service
(972) 771-5987
2701 Fondren Dr. #133 Dallas, TX 75206

Allowable Exposure Levels to Carbon Monoxide

Appliance and Air Care Experts has certified technicians to take care of your AC installation near Rockwall TX.
Services Offered
  • Air Cleaners and Air Filters
  • Air Conditioning Repair
  • Air Conditioning and Heating Replacement
  • Appliance Repair
  • Attic Insulation
  • Carbon Monoxide Testing
  • Duct Cleaning
  • Duct Repair or Replacement
  • Heating Repair
  • Humidifiers
  • UV Lighting
  • Thermostats
  • Zoning Systems
Appliance and Air Care Experts accepts most credit cards for Appliance in Dallas TX.

Expert Air Conditioning Service and Installations for residents of the Texas Counties of Dallas, Collin, and Rockwall


HomeAdvisor Screened & Approved Business

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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Appliance and Air Care Experts is a member of the Business Performance Institute in Dallas TX.
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Appliance and Air Care Experts has NATE certified AC repair technicians qualified to service your Dallas TX home.