Any individual, partnership, corporation, association, or other legal relationship which engages in the business of installing new or used consumer goods, has a duty to the buyer to install them in a good and workmanlike manner.
Consumer WarrantiesStandards for Warranty Work
Section § 1796
If you're in the business of putting in consumer goods, whether new or used, you must do the job properly and to a high standard so the customer gets what they paid for.
consumer goods installation workmanlike manner buyer protection
Section § 1796.5
If you're a business or person providing services to fix or maintain new or used consumer products, you must do the work well and properly for the customer.
Any individual, partnership, corporation, association, or other legal relationship which engages in the business of providing service or repair to new or used consumer goods has a duty to the purchaser to perform those services in a good and workmanlike manner.
service provider repair duties consumer goods