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The Water Cooler
General Discussion
Tankless Hot Water Heaters
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<blockquote data-quote="aking" data-source="post: 1307455" data-attributes="member: 6033"><p>All tankless waterheater manufacturers do recommend yearly maintenance. If you are just a slight bit machanical you can do it yourself. You can buy the kit from a plumbing supplier. It will have the bucket, pump, solution, hoses and connectors. Basically you unplug the unit, hook up the hoses, turn two valves and let it circulate for an hour. The Bosch unit does take the same size gas line as a tanked heater but do put out less GPM. They will ussually work for but don't expect to run several fixtures at once, especially in the winter. I have not seen a Bosch that has less than a 5" vent. Most residential tanked waterheaters require a 3" vent. I ussually recommend the </p><p>Rinnai, Noritz, or Navian brands. They require a larger gas line but will put out more gallons per minute. About 4 years ago the government mandated that tank water heater be more efficiant. Most of your new tanked heaters are losing less than 1 degree an hour if the outside air is 60 degrees cooler than the water in the tank. I sell and install alot of both. I try not to persuade people one way or the other. I just want them to know the facts.</p><p></p><p>-A tankless waterheater does not provide you with instant hot water.</p><p>-A tankless waterheater will provide you with unlimited hot water is sized properly.</p><p>-A tankless waterheater should last longer and will have a better warranty.</p><p>-A tanked heater is much cheaper to replace.</p><p>-To replace a tanked heater with tankless ussually requires a larger gas line and vent. Tankless burners are 160,000 to 200,000 btu's compared to 40,000 for tanked.</p><p>-Unlimited hot can sometimes be more expensive than keeping a tank warm.</p><p>-Most tankless are eligible for a tax rebate</p><p></p><p>I have a tankless in my house but as a plumber the installation was cheap. I cannot tell any difference in my gas bill. Most of my customers that do alot of research go back with a tanked heater.</p><p></p><p>I don't recommend electric tankless. They require 3 or 4 50amp breakers and are very hard to find parts for.</p></blockquote><p></p>
[QUOTE="aking, post: 1307455, member: 6033"] All tankless waterheater manufacturers do recommend yearly maintenance. If you are just a slight bit machanical you can do it yourself. You can buy the kit from a plumbing supplier. It will have the bucket, pump, solution, hoses and connectors. Basically you unplug the unit, hook up the hoses, turn two valves and let it circulate for an hour. The Bosch unit does take the same size gas line as a tanked heater but do put out less GPM. They will ussually work for but don't expect to run several fixtures at once, especially in the winter. I have not seen a Bosch that has less than a 5" vent. Most residential tanked waterheaters require a 3" vent. I ussually recommend the Rinnai, Noritz, or Navian brands. They require a larger gas line but will put out more gallons per minute. About 4 years ago the government mandated that tank water heater be more efficiant. Most of your new tanked heaters are losing less than 1 degree an hour if the outside air is 60 degrees cooler than the water in the tank. I sell and install alot of both. I try not to persuade people one way or the other. I just want them to know the facts. -A tankless waterheater does not provide you with instant hot water. -A tankless waterheater will provide you with unlimited hot water is sized properly. -A tankless waterheater should last longer and will have a better warranty. -A tanked heater is much cheaper to replace. -To replace a tanked heater with tankless ussually requires a larger gas line and vent. Tankless burners are 160,000 to 200,000 btu's compared to 40,000 for tanked. -Unlimited hot can sometimes be more expensive than keeping a tank warm. -Most tankless are eligible for a tax rebate I have a tankless in my house but as a plumber the installation was cheap. I cannot tell any difference in my gas bill. Most of my customers that do alot of research go back with a tanked heater. I don't recommend electric tankless. They require 3 or 4 50amp breakers and are very hard to find parts for. [/QUOTE]
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