How to Select a Commercial Contractor

• Can the company show proof of NADCA membership and certification?

• How long has the contractor been in the residential HVAC system cleaning business?

• Can the contractor provide you with evidence of the current Worker’s Compensation and General Liability Insurance coverage? (Ask for Certificate of Insurance)

• Does the contractor posses the proper Licenses that are required by your city or state to perform the work they are proposing?

• Can the contractor provide you with 3 to 5 customer references with phone numbers for projects of similar size and scope of work which they provided service in the last year?

• Does the contractor have written safety, respiratory, and confined space programs in addition to OSHA compliance reports?

• Will the contractor provide you with a means to conduct a visual inspection at any time during the cleaning? (Mirror and flashlight, camera or other remote visual systems)

• Will the contracting company actually do the work? (Some companies subcontract the work to independent contractors. You will want to apply these guidelines for subcontractors as well.)

• Will the company be assigning an Air Systems Cleaning Specialist (ASCS) to your project that will be responsible for the complete project?

• If there is any remediation of mold or other biological contamination does the company have a Ventilation System Mold Remediator (VSMR) on staff.