That makes sense. But in the second link I posted it spells out that a tenant must provide heat and hot water in Washington at least.
The Landlord Must:
Keep the premises fit for human habitation at all times during the tenancy.
Maintain the premises to comply substantially with all state and local laws that substantially affect your health and safety.
Maintain all structural components (chimney, roof, floors, and so on) in reasonably good repair.
Keep any shared or common areas reasonably clean and safe.
Provide a reasonable program for the control of insects, rodents and other pests, except when infestation is caused by you. (In the case of a single-family residence, the landlord does not have to control infestation that happens after you have moved in.)
Make repairs and arrangements needed to put and keep the premises in as good condition as by law or rental agreement it should have been at the beginning of your tenancy, except where the condition is due to normal wear and tear.
Provide you reasonably adequate locks and give you keys.
Maintain all electrical, plumbing, heating and other facilities and appliances supplied by the landlord.
Maintain the dwelling in a reasonably weather-tight condition.
Provide garbage cans, and arrange for regular removal of waste except in the case of a single-family residence.
Provide facilities adequate to supply heat and water (including hot water) as you reasonably require.