Always On Call, Always The Right Call
 
Call H & N Plumbing, Heating, & Electrical, Inc. for reliable Furnace replacement in Fennimore WI.
 
Serving Southwest Wisconsin
 
H & N Plumbing, Heating, & Electrical, Inc. has certified technicians to take care of your Furnace installation near Boscobel WI.
 

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 Hour Emergency Service • Call Us Today • (888) 822-3258 • or • Schedule Service online
24 Hour Emergency Service
(888) 822-3258
Schedule Service online
 
 
Contact Info
 
Address:  1325 Seventh St
Fennimore, WI 53809
Toll Free:  (888) 822-3258

 
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Payment Options
 
For Furnace in Fennimore WI, we accept most major credit cards.
 
We accept check for Furnace repair service provided in Boscobel WI.
We accept cash for Electrical repair service provided in Lancaster Wi.
 
We accept all major credit cards, cash and personal checks. We also have several financing options available through third party financing institutions.
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Business Hours
 
Monday:  7:00am - 5:00pm
Tuesday:  7:00am - 5:00pm
Wednesday:  7:00am - 5:00pm
Thursday:  7:00am - 5:00pm
Friday:  7:00am - 5:00pm
Monday - Friday:  7:00am - 5:00pm
CALL US ANYTIME, DAY OR NIGHT. YOU WILL SPEAK TO A REAL PERSON, NOT AN ANSWERING MACHINE.
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Home   |   Email Us   |   Schedule Service
Get a Quote   |   Maintenance   |   Guarantees
Employment   |   Tax Credits   |   Search Site