I don't know, but make sure they use decent parts in the fittlings.
The dead-shits that installed the one in mine used plastic T pieces to tap into the heater water. A plastic T piece clamped by steel hose clamps. Well the plastic broke, (luckily for them after a couple of years), and caused loss of coolant and stranded me out in the sticks. A plastic T piece cost 15c, a brass one cost about $12. Just make sure they use top quality fittings.
Good luck with it.
"I married Miss Right. I just didn't know her first name was Always."