They are in style right now and the cost difference is negligible.

(b) If after a casualty loss the rental premises are as a practical matter totally unusable for residential purposes and if the casualty loss is not caused by the negligence or fault of the tenant, a member of the tenant's family, or a guest or invitee of the tenant, either the landlord or the tenant may terminate the lease by giving written notice to the other any time before repairs are completed.

Liabilities include long-term and short-term debt, as well as any other amounts that are owed to others.liability insuranceInsurance coverage that offers protection against claims alleging that a property owner's negligence or inappropriate action resulted in bodily injury or property damage to another party.

When the lease is up, raise rent to market, and if they leave, charge them for the repairs needed due to their negligence.

"Fine" to the extent that person doesn't declare the property his (it is his, actually) and you the partners out of the deal.If something happens with the rental (someone slips and falls because you didn't replace the balusters fully knowing the risk and despite the repeated requests from the tenant, in which case the insurance will not cover you since is considered gross negligence)  and the person on the title gets sued, all his assets will be at risk, personal and the rental.

Probably not negligence, just lack of knowledge.

It's no one's fault or negligence the water heater broke. 

Not sure what is easier overall (cleaning versus buying and swapping) but I am fairly sure that cleanable is a little better for the environment and slightly cheaper (the filters are pretty cheap so we are probably on the order of $1 to $2 a month - negligible in the scheme of things).Good luck

Now the landlord thinks that it is by negligence and wants me to pay for it.

Your municipality probably has laws against the negligent discharge of a firearm and/or a tenant that poses a danger to the neighborhood.