Building new house with Tankless and re-circulating pump
We are building a new house in s.california- has 2 bathrooms. 2 adults and one child. We are installing solar electric. We are going with the tankless water heater and since kitchen and one of the bathrooms is far from the TWH, we want to install the re-ciruclating pump. I would like to know WHICH BRAND gas TWH is best and which top brand pump would go with it. My plumber is telling me that putting a recirculating pump on most TWH voids their warranty and that I need a 5 gallon electric water heater to do the job. If true, is there TWH brand out there which works with pump without voiding warranty. What type of electric water heater is better quality? What else I should ask plumbers to do to make this system work well? Thanks for your help.