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Big thank-you for all the help. I ended up getting a Navien tankless with a built in recirc pump built in. Finally my wife is happy with hot water to the kitchen island sink. Again thank you to all. Jim

My old gas water heater was replaced with a Navien gas tankless NPE 240A2. The old water heater was located in a small closet that was built into the outside of the house that has a door with a vent screen in it. This is where the Navien was installed. Instead of venting it with pipe and...

Update My gas water heater needed to be replaced. My neighbor suggested I get a on demand Nevian with a recirculation pump built into the system. I took his advise, keep the dedicated return line, and removed the Grunfros pump. Since doing this it takes 5 minutes to get hot water from the on...

Thx guys! As for the insulation, I have already insulated the dedicated return line. The house sits on a slab and the copper pipe is looped under it. If I did not have an island I would have had it re plumbed with pex, with the island it would very very expensive. Summary So based upon you...

Thx to everyone for the help. There is no better information than information from people on the ground. The short answer is I have one hot water line coming to the kitchen sink and then a short one on the angle valve to the dishwasher. I did not know if putting a sensor valve on the hot and...

Hello! I put in a hot water recirc. pump and want to add a hot water sensor under the kitchen sink. It looked simple enough. However, when I look under the sink I saw an additional hose to the dish washer. The sensor valve has only 4 inputs. Do I hook this up the regular way and just not...

Does anyone know where i can a potable air vent ? I have done a lot of internet searching with no connection. Big thx Jim

Are yiu saying to have the air vent at the highest point on the pex line? Also should the pex be insulated? Should the pex be run on the attic floor or hung on the rafters?

I called the distributor of the Grundfros and he said that running a dedicated return line up through the attic would requie an air vent on the suction side of the pump What is an air vent Do i install it near the hot water heater or up in the attic Please advise Jim

You are correct. However the sink is plumbed into a kitchen island. My wife does remember getting hot water to the sink when the back bathroon hot was turned on or the adjacent utility room washing machine was running. Thank you guys for all the help. May it be returned to you many times...

My California home sits on a concrete slab. The water system has no dedicated hot wrer return line. My handyman friend said he could install a dedicated return line by teeing from the hot water line that comes up from the slab in my bathroom at the furtherest point from the water heater. He...

I am planing a kitchen remodel and my wife wants a Bosch single wall oven, undercounter installation. The instructions say a 30 A breaker 240/208V. I checked the panel and the circuit has two 40 amp breakers to serve the existing wall oven. We would like to replace the exiting cooktop with a...

I want to thank all of you for your advice. I shall put in some sort of recirculation pump. A Big thx to fullysprinklered hj Michael Bukay Ono Kai Gary Swat Reach4 Regards, Jim

I checked and I dont have a return line. My problem is a long wait time from the looped underslab cooper pipe to bring hot water to my kitchen island. I was all set to do the recirculation pump but I made the mistake of too much knowledge from my web reaearch (LOL). There can be pin leaks in...

Does this pump regulate velosity and decrease the risk of copper pipe leakage? Also, the literature says it is for a home that has a dedicated hot water return line. How would I know if I have a dedicated hot water retun line?

Yes. My web research mentioned velocity. Unfortunately, my research has not found a solution to this velosity problem. Is there something, a separate part that can be attached akong with the recirculation pump that can control this? Is there a pump that has a velosity control system as a part...

Thank you guys for your advice. I was hoping i could install a water heater in the corner of the garage and hook the water up from the adjacent bathroom sink water sources . I Can acces these copper pipes that come up from the slab and hook into the hot and cold sink facets. I have an unused gas...

I need help on solving hot water problem in kitchen. Here is some background info In 1997 we bot a single story California home. It is about 2400 sq ft 4 bedroom 2 1/2 bathes with a kitchen island where the sink, dishwasher and electric cooktop reside. We had he home inspected but the hot...