Review on Efficient and Reliable: GIRARD 2GWHAM Tankless Water Heater by Leon Johnsson

Ok I have a Keystone Laredo MK335 and it fits perfectly. Hooking up the old fittings to the new ones was a bit of a chore (I hate PLEX), but I still made it by noon. In truth, a water heater works great with city water. Unfortunately, when disconnecting from the city water and using the RV pump, there is not enough pressure. I'll put a battery in right after the pump and see if it works (batteries are only about $40 which eliminates the hammer effect). If not, I'll have to upgrade the pump ($249) or settle for a cold shower. during dry camping. UPDATE The water heater broke down the night after I wrote this review. Error code E0 and then E6. After searching the internet I found that it was a faulty output temperature thermistor. I also found the BEST heater maintenance manual I have ever seen. The guide will walk you through all the codes and how to fix each code. I called customer service the next day and although I had to pay for overnight delivery (I didn't want to wait until Monday) I was very happy with the service. The part arrived at 1pm and I was ready to go in 10 minutes. I hope there are no more problems.