Caught 6:20am sailing MADRONA HOUSE Performed replacement of qty. 10 tekmar 541 thermostats with new tekmar 532 thermostats. Tested operation. Discovered that the existing (bottom) tekmar 335 zone control was not controlling 4 out of 5 thermostats. Replaced both tekmar 335 zone controls as directed by Tom. Disposed of defective tekmar 335 and save existing functional 335 for emergency back up. Also saved new tekmar 423 for back up. Please note: The tekmar 420 control (direct replacement) is no longer produced nor available. The Tekmar 423 is the closest substitute. Please note: The tekmar 423 and 335s will work on all three homes (boat house, madrona, and main house) MAIN HOUSE Document with pictures. Customer request to replace zone valves and actuators DISCO HOUSE Confirmed customer diagnosis of water leak between pump house an main water shutoff in crawlspace FARM HOUSE Ran diagnostics on 6 year old tankless water heater installed by CPI. Heat exchanger is