Ask landlord to provide a warranty in the lease for electrical, mechanical systems and HVAC units for at least for an initial time period. Know that after that time, most costs fall on the tenant. Try all systems upon move-in and document the status, then provide to the landlord for fixes, repairs or replacements. Repeat this process at renewal time as part of your renewal agreenent. Note, systems fail and maintaining these cost intensive items are a part of the negtiating process of leasing and preparing a document to sign. All landlords are different, all buildings are in a different stage and age, which makes warranties ever more important. Don’t miss this opportunity to cost you down the road.