I'm just posting an update here to warn the BP community to be aware of Garden State Water Heaters: NJ Water Heater Company. Even if you pay them to install a water heater, there's no guaranteed it would work. And the owner (Carmine) doesn't fulfill the contract of 2 year warranty on the labor.
On top of the original $2100 I paid them, I paid them another $700 last week on 1/19/2022 to replace the water heater with a different model with higher BTU (65,000) than the first one I bought through them (40,000 BTU). After they replaced the water heater (which according to Carmine should serve hot water properly), I got a call from tenants two days later saying that the water heater stopped functioning properly.
The only time that you get hot water in the shower is when the heat is on in the apartment and the water is circulating through the heating pipes. When the heat is not on, the hot water is not passing through the valve in the center of the heater where the heat return is connected. Basically, my tenants would have to blast the heat/turn the room thermometer on to kickstart the water heater. When they turn the room heat back down, you only get cold water. So we think there is something wrong in the piping of this water heater.
When I messaged Carmine from Garden State Water Heaters: NJ Water Heater Company, he refused to send his team back to check and claimed that they didn't make any mistakes on piping. Well, how can he be so sure without even checking out the issue? He even asked my tenants to only take two minutes hot shower which is ridiculous.
I already escalated this to Angie List -- be aware of sourcing contractors through Angie's List, even if they seem to have good reviews. These contractors paid to have their services marketed but Angie List didn't vet them properly. I'm considering taking legal actions against this company.