Our installers and technicians are the best! Count on us for expert service and a prompt response.
Our installers and technicians are the best! Count on us for expert service and a prompt response.
Schedule Service
Reviews
Ashland, Virginia
 
 
Call Us Today
(888) 433-6101
Ashland, Virginia
Call Us Today
(888) 433-6101

Allowable Exposure Levels to Carbon Monoxide

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.
24/7 Emergency Service • Call Us Today • (888) 433-6101 • or • Schedule Service Online
Contact Information
 
Address:  11197 Leadbetter Rd - P.O. Box 6370
Ashland, VA 23005
Northern Virginia:  (703) 430-6603
Toll Free:  (888) 433-6101
Send Us a Message
 
Office Hours
 
Monday:  8:00am - 5:00pm
Tuesday:  8:00am - 5:00pm
Wednesday:  8:00am - 5:00pm
Thursday:  8:00am - 5:00pm
Friday:  8:00am - 5:00pm
Saturday:  Closed
Sunday:  Closed
Monday - Friday:  8:00am - 5:00pm
Schedule an Appointment
 
Payment Options
 
For Furnace in Ashland VA, we accept most major credit cards.
 
We accept check for Heat Pump repair service provided in Mechanicsville VA.
We accept cash for Electrical repair service provided in Henrico VA.
 
Contact Us For Financing
Home   |   Email Us   |   Schedule Service   |   Get a Quote   |   Maintenance   |   Guarantees   |   Employment   |   Leave a Review   |   Search Site
Home   |   Email Us   |   Schedule Service
Get a Quote   |   Maintenance   |   Guarantees
Employment   |   Leave a Review   |   Search Site