How to Select a Residential 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? (Not all cities or states require licenses)

• Will the contractor provide you with 3 to 5 customer references with phone numbers for which they provided service in the last 30

• Will the contractor conduct a thorough inspection of your system PRIOR to performing any work and alert you to any problems? This is required by the current NADCA Assessment, Cleaning & Restoration of HVAC Systems (ACR) Standard.

• 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 contractor be cleaning the complete system, including coils and fans?

• 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.)

• Is the contractor giving you a guaranteed price before the inspection? This may expose you to extra costs. Finding mold in the system, damaged fiberglass insulation, cleaning or treating cooling coils may become add-on costs.