Charge tenants to have programmable thermostat installed?

[Matthew L.]

My tenants in my Atlanta condo pay all the utilities. They recently asked me if I could have a programmable thermostat installed before the summer so that they do not have to come home to a hot apartment as they (understandably) do not want to run the A/C all day while at work. I didn't even think about asking them to pay for the unit but another landlord I was talking to said he would absolutely have them pay since the unit in the apartment works fine and a new unit will save them on utility costs. I'm inclined to pay for it myself since I'm all about energy efficiency and they are perfect tenants who I want to keep happy and hope they extend their lease. Are there any hard rules you follow in this situation or is it a case by case basis depending on the tenant?

Related to that, can anyone recommend a reliable handyman or company in Atlanta that installs programmable thermostats as I live in NY.

Thanks!