The plaintiff (tenant) brought an action against her landlords in the Hampden County Housing Court seeking declaratory and injunctive relief and damages on the ground that the landlords had failed to furnish heat to her apartment. It was claimed that the defendants had violated those portions of G. L. c. 186, § 14, as amended by St. 1974, c. 192, § 1, which impose civil liability on a landlord “who willfully or intentionally fails to furnish . . . heat. . . or . . . who directly or indirectly interferes with the quiet enjoyment of any residential premises by the occupant . . . .” The landlords brought a cross action of summary process. G. L. c. 239, § 1. Following a trial on the consolidated actions, the judge found and declared (a) that the landlords were not liable on the claims under G. L. c. 186, § 14, because they lacked the ability to pay for heating oil; (b) that the tenant was entitled to a partial rent credit for the period when she lacked heat; (c) that the tenant’s rent should be increased by $50 per month to reflect the fair rental value of the premises; and (d) that the landlord’s obligation to provide fuel was to be limited to $100 per month of their own funds plus any rent paid by the tenant. The landlords’ summary process action was dismissed because the notice to quit was not timely. The landlords did not appeal. The tenant has appealed. We reverse.