This Los Angeles based plumber ripped us off on repair on boiler. Charged us about $350 to replace a thermocouple (part costs $10). Did give warranty on work and boiler failed again in two days. Came back and told us we need to replace the entire boiler because there's a leak, and quoted us nearly $5000 to replace the boiler! Contacted Lowes for the same job and it cost us only about $1000 in comparison. Now I'm not even sure if there was anything wrong with the thermocouple in the fist place. I even asked for a refund but no reply till date from Mike Diamond Plimbing read full review »