The 9 Best Tankless Water Heater Connection Kits (2022 reviews)

tankless water heater connection kits
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It is important to have the well suited tankless water heater connection kit. We are here to help you choose the right one for your needs from all the best available products in market today.

Our review process:

Our Top Picks:

Best Overall:
Buy: Rheem Tankless Water Heater Connection Kit
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Best For Bucket:
Buy: Kelaro Tankless Water Heater Connection Kit
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Best With Excellent Quality:
Buy: Libra Supply Tankless Water Heater Connection Kit
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Best With Great Seller:
Buy: Itanso Tankless Water Heater Connection Kit
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Best For Well Water:
Buy: Hqmpc Tankless Water Heater Connection Kit
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Best For Part Number:
Buy: Noritz Tankless Water Heater Connection Kit
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Best For Making Installation:
Buy: Metpure Tankless Water Heater Connection Kit
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Best For Easy Identification:
Buy: Hydro Master Tankless Water Heater Connection Kit
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Best For Customer Service:
Buy: Vav Tankless Water Heater Connection Kit
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Best Overall: Rheem Tankless Water Heater Connection Kit

Rheem Tankless Water Heater Connection Kit
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The Rheem Tankless Water Heater Connection Kit's material feels more premium than its price would suggest. The rheem tankless water heater connection kit looks pretty good, is yellow and it works great. Make sure this fits by entering your model number. These hot and cold water service valves simplify installation and service by combining multiple valves and connections in a single part.

The kit fits all models of rheem gas tankless water heaters. And, the kit has lead free brass and it allows for great functionality. Most importantly, the rheem tankless water heater connection kit has vent termination and it is great for customer service.

Almost all buyers agree that the kit can be used on new install of Rinnai w/h from lowes. Also, they say that the kit has a drain on valves so there is no need for a separate way to drain the system. Also, they also found that the kit has two colors of handles, as shown. In conclusion, many have used the kit for more than a few months without any complaints, and it shows no sign of giving up.

Top Customer Quotes:
  • This worked perfectly, it is super hot and has a water heater design.
  • This is how they flush the system to diagnose the problem.
  • These make acid flushing easy.
  • This allows for a perfect fit, fits perfectly and it is reliable.

Best For Bucket: Kelaro Tankless Water Heater Connection Kit

Kelaro Tankless Water Heater Connection Kit
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We know from years of feedback from readers, amazon sellers, and family and friends what most people want in a convenient and appropriate kit. The Kelaro Tankless Water Heater Connection Kit is exactly that - it's a simple kit that hits all the right notes. The kelaro tankless water heater connection kit straight forward and it is white. Find the best kelaro tankless flush kit for you. Also, the kit comes with proper maintenance, they can last over twenty years.

The kit is small and it works as advertised. Finally, the kelaro tankless water heater connection kit is stainless, can be bought for good value and it is easy to use.

Almost all customers opine that the kit is perfect for the everyday person. Also, a few strongly agree that the kit is perfectly and well packaged. Further, they say that the kit is easy to set up and get running.

Top Customer Quotes:
  • This is reusable by simply replacing the cleaning agent.
  • You could hire a plumber to do the maintenance, or save even more.
  • The manufacturer says: our products are engineered by us in California.
  • Easily connects to tankless isolation valves using supplied 6' color coded rubber hoses.

Best With Excellent Quality: Libra Supply Tankless Water Heater Connection Kit

Libra Supply Tankless Water Heater Connection Kit
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Compared with other kits in this category, the Libra Supply Tankless Water Heater Connection Kit has a convenient design. The libra supply tankless water heater connection kit is tough and it works well. Make sure this fits by entering your model number. Further, this is made of quality material and works with all tankless water heaters with a 3/4'' MPT outlet.

The kit is very happy, makes for a great solution, It works great and has a water heater design. In addition, the kit is great for a great price and it is very professional. Most importantly, the libra supply tankless water heaterconnection kit is the expansion pex a connector, not the crimp pex b connector.

Most buyers quickly discovered that the kit comes with a relief valve and easy drain for maintenance. Further, a few strongly agree that the kit includes a pressure valve is a plus. To sum up, buyers found this to be one of the best kits for daily purposes.

Top Customer Quotes:
  • This price is reasonable, does the job and it is important.
  • For hot & cold water, female thread x expansion pex a connection.
  • This is a great replacement for the watt purge and balancing valve.
  • Easy installation and compact design, fits tankless water heater with a 3/4'' MPT outlet.

Best With Great Seller: Itanso Tankless Water Heater Connection Kit

Itanso Tankless Water Heater Connection Kit
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The Itanso Tankless Water Heater Connection Kit's superior materials make sure that it ages well with use. The itanso tankless water heater connection kit is reassemble and it has lead free brass. Make sure this fits by entering your model number. The prv ( pressure relief valve ) needs to be installed to the hot water valve.

Lastly, the itanso tankless waterheater connectionkit provides a one-year guarantee against defects in material and workmanship.

Almost all buyers found that the kit is used to connect to the water heater. Further, they also found that the kit is easy to install and works like a charm. In addition, a few say that the outflow line from the pressure valve needs to be directed to a safe discharge location in case it ever operates due to over pressure, failure or routine testing. In conclusion, buyers found this to be one of the best kits for daily purposes.

Top Customer Quotes:
  • This is made from lead free heavy duty brass for years of usage.
  • This can be used on two tankless heater installs.
  • This works well for cold set and it is made for good value.
  • This is quality good, is great with a great seller and it has the best price.

Best For Well Water: Hqmpc Tankless Water Heater Connection Kit

Hqmpc Tankless Water Heater Connection Kit
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Best part: Hqmpc Tankless Water Heater Connection Kit costs comparatively little and it is available to ship in 24 hours. The hqmpc tankless water heater connection kit is made of brass, It is great for a great price and has a good - quality design. Own a tanklesswater heater flush kit thread is npt 3/4", hot &cold water valve 500 wog, pressure relief valve is 150 psi. Moreover, it is impressive and it is made with great quality.

Above all, the hqmpc tankless water heater connection kit is made for good value and has a water heater design.

Almost all customers found that the kit is made of very good quality and is quite heavy. In addition, a few strongly agree that the kit is great for maintenance activities on tankless water heaters. Moreover, they also found that this is a great diverter kit for flushing a tankless water heater. Overall, buyers found this to be one of the best kit for daily purposes.

Top Customer Quotes:
  • It appears to be good quality and it is very nice.
  • This item comes with a pressure relief valve and is threaded on both sides.
  • Good brand reputation.

Best For Part Number: Noritz Tankless Water Heater Connection Kit

Noritz Tankless Water Heater Connection Kit
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We know from years of feedback from readers, amazon sellers, and family and friends what most people want in a convenient and appropriate kit. The Noritz Tankless Water Heater Connection Kit is exactly that - it's a simple kit that hits all the right notes. The noritz tankless water heaterconnection kit fits all noritz models except nc132m/nc380 and ncc300. Valve kits are an essential component for heater service and should be installed on all tankless water heaters. Further, this is made with excellent quality and it is made for product number.

The kit fits all other tankless brands with a 3/4" inlet and outlet. Lastly, the noritz tanklesswater heater connectionkit is cost effective, is designed for a great price, It is great quality and has a water heater design.

Most buyers opine that the kit is a great service valve for Noritz brand tankless water heater. Moreover, they say that the kit matches with your tank-less heater needs. And, they strongly agree that the sw in the part number is for the sweat whereas th is for the threaded version.

Top Customer Quotes:
  • The relief valve is included and the flushing connections are perfect.
  • 3/4" lead free isolation valve kit with female threaded connections.
  • This is used to disconnect isolation valves.
  • Fits all other tankless brands with a 3/4" inlet and outlet.

Best For Making Installation: Metpure Tankless Water Heater Connection Kit

Metpure Tankless Water Heater Connection Kit
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Metpure offers a variety of kit for personal choice and yet maintains quality in all the variants. The Metpure Tankless Water Heater Connection Kit is impressive, is great for complete set and it is durable. The main isolation valve set is factory tested to be leak free, so you can be confident that your heater can be maintained periodically during each flushing sequence. This kit could be used in both residential and commercial gas tankless waterheater applications with maximum water pressure at 150psi and a 200k btu gas rating.

The kit is sturdy, is yellow and it is of excellent quality. Most importantly, the metpure tankless water heater connection kit is put together for contractors, plumbers, builders, service personnel, home owners, and alike who are looking for a comprehensive kit that could help them complete their tankless water heater install.

Most buyers agree that the kit includes a set of tankless isolation valves which serve the purpose of flushing the tankless unit for periodic maintenance. And, they strongly agree that the kit is a great kit for making installation easy. In conclusion, most buyers agree that the kit is functionally comfortable and no one questions it.

Top Customer Quotes:
  • The components are certified lead free, including the isolation valve kit with nsf certification.
  • This includes all components that are crafted from high quality materials for years of usage.
  • It is easy to crack the metal hoses by bending to fit.
  • This is tough and it worked the first time.

Best For Easy Identification: Hydro Master Tankless Water Heater Connection Kit

Hydro Master Tankless Water Heater Connection Kit
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Hydro Master makes beautiful and great kit with classic and smartly chosen materials. Further, it is easy to install and easy to change the connections with 2 pcs swt. Tankless water heater service valves 500wog, colored valve handles for easy identification of hot and cold valves. Most importantly, the Hydro Master Tankless Water Heater Connection Kit includes a residential pressure relief valve (150 psi/500, 000 btu) and 2 pcs swt connections.

One customer says - "You will need to be able to use a torch to install. ". Almost all customers quickly discovered that the kit is used to install a wall propane boiler/hot water heater. So, customers were very happy to recommend it to friends and would-be buyers.

Why We Like This:
  • Include a residential pressure relief valve (150 psi/500,000 btu) and 2 pcs swt connections.
  • Delivers what they promise.

Best For Customer Service: Vav Tankless Water Heater Connection Kit

Vav Tankless Water Heater Connection Kit
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Vav offers a variety of kit for personal choice and yet maintains quality in all the variants. The Vav Tankless Water Heater Connection Kit is made from heavy duty and lead free solid brass which meets the lead free requirements of federal and state and is manufactured in an iso 9001 accredited facility. 34" pressure relief valve is rated to150psi and 500, 000 buthr, with end connection meet the request of npt. The tankless kit works with all 3/4 inch npt threads and is suitable for most American residential usage, both commercial and residential gas tankless water heater brands such as noritz, rinnai, rheem, takagi and so on.

Lastly, the vav tankless water heater connection kit is made for standard sizes, It can do for customer service and has a superior integrated design.

Why We Like This:
  • A pressure relief valve is included for connection to the hot valve.
  • New and hot releases.