I called about my water heater rental today thinking I might buy it out or buy a new one and get rid of the quarterly rental charge. Very quickly they offered me 2 months credit to keep it for at least 12 more months. I asked for 4 months and they came back with 3 months. So a 5 minute call saved me $70. By the way it would have cost me $450 plus tax to buy out the nine year old unit from them. That doesnt make much sense as its getting close to the end of its life span. To replace it would be close to $2000 installed. 50 gallons gas powervent. Apparently they would have to replace the venting as code has changed since this one was installed.