Md. Code, Commercial Law § 13–307

(a) (1) In this section the following terms have the meanings indicated.

(2) (i) “Home appliance” means any device the retail cost of which exceeds $100 and which is generally used in a private residence;

(ii) “Home appliance” includes an air conditioner, washing machine, dishwasher, television set, stereo set, oil burner, and any similar item.

(3) “Repair company” means any person who repairs home appliances for a fee or consideration.

(b) Except as provided in subsection (c) of this section, a repair company shall furnish a written bill for the cost of repairing a home appliance to the person for whom the repair was made. The bill shall include the following information:

(1) The hourly labor rate;

(2) The time actually used to repair the home appliance;

(3) The itemized cost of any new parts used to repair the home appliance;

(4) The itemized cost of any used or reconditioned parts used to repair the home appliance and a statement that used or reconditioned parts were used; and

(5) Any other charges.

(c) This section does not apply if:

(1) The repair work is done under a service contract; or

(2) A flat price or firm estimate is given before repair of the home appliance.