The Air Conditioning Contractors of America’s Educational Institute is taking public comment on its “Maintenance of Residential HVAC Systems” guidelines as part of a proposal to make it an ANSI standard.

Comments are being taken through Nov. 26. The standard, which is undergoing review by the American National Standards Institute, would set minimum inspection requirements for one- and two-family residences under three stories.

The proposal can be read . Comments can be sent to Dick Shaw at