Can I connect an indoor water meter to water heater with PEX?

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I am replacing my existing faucet plumbing with red / blue PEX all over the house. Everything that goes to the sink, dishwasher, washer, bathroom sink and so on will be color coded and installed correctly.

Although, I was pondering on changing my water heating system with PEX while I was at it. Of course, I would leave my baseboards with a copper pipe so that it gives off more heat. What I would like to do is to have quick-connects from the PEX to the copper, so that if ever I need to remove the baseboards (redoing flooring, walls, etc), I just disconnect the whole thing and pop out the baseboard.

PEX is better at keeping the heat in the pipe compared to copper so I would be losing less heat if I go from the boiler to the baseboard with PEX. Then I'd have copper inside the baseboard which would feed into the other PEX that would go to another baseboard...

Is this recommended in 2014? I feel like copper is old and out dated.

My boiler is powered by...

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I (literally) dug up the information on our water meter: Currently we have a 2" Neptune T-10 installed. On their website they offer specifications for their different meters, including charts of pressure drop vs. flow-rate. I used some free software to quickly digitize the plots and stick them together onto one chart showing the pressure drop vs. flow rate for 4 different meter sizes:

So, if I assume (please correct me on these assumptions if they make no sense) that a 10% pressure drop would be noticeable (for us: 3.5psi), then I would hit this drop at 18gpm for a 3/4" meter and at 33gpm for a 1" meter. Given that the shower valve we installed provides 8gpm at 75psi (so probably less at 35psi), that means 2-3 people can take a shower at the same time with a 3/4" meter and more than 4 for a 1" meter.

So, I guess going with a 3/4" meter feels a little tight to me (unless we get a booster pump, of course), but a 1" meter should probably be just fine. I don't...

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Do I Need Special Tools?

No. You can use stab-in or compression fittings to make the connections. But they’re too expensive to be practical on large projects. For most jobs, you’ll want to invest in a special tool to make connections. There are several PEX connection methods, but only two that are affordable enough to be practical for DIYers: crimp rings and cinch clamps.

Crimp rings are a band of metal, usually copper, that you slip over the fitting and compress with a crimp ring tool. The main drawback to the crimp ring method is that you’ll need either separate crimping tools for 1/2-in. and 3/4-in. fittings, or a universal tool with a swappable insert (not shown). This adds a little up-front cost to this method. A combo kit with interchangeable crimp jaws starts at about $100.

Cinch clamps work more like the traditional band clamps you’re probably familiar with. You slip the cinch clamp tool over the protruding tab and squeeze to tighten the cinch clamp....

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Cross-linked polyethylene (PEX) is a form of polyethylene with cross-links.

PEX is made by a process that forms links between polyethylene molecules to create bridges (thus the term "cross-linked). This resulting material is more durable under temperature extremes, chemical attack, and better resists creep deformation, making PEX an excellent material for hot water and other applications. It doesn’t corrode or develop pinhole leaks, is chlorine-resistant, scale-resistant, and has fewer fittings, connections, and elbows than rigid plastic and metallic pipe.

Cross-linked polyethylene (PEX) is a high-temperature, flexible plastic (polymer) pipe. The cross-linking raises the thermal stability of the material under load. Thus, the resistance to environmental stress cracking, creep, and slow crack growth are greatly improved over polyethylene.

The caveat to PEX plumbing is the long-term effect of chlorinated water on the vinyl walls in the tubing remains unknown...

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Seth Humphrey: Thanks for video. You seem knowledgeable and communicate the info well. How can I connect a shower head to the hot water outlet?

Jesse Zabel: nice work, that's why it's gfci protected a plastic wall or plexiglass would just be added protection. some inspectors always have to find something...

John Hill: I appreciate the video man! I have some odd questions, you'd be an incredible help if you can provide some insight to them. I'm building a 'Portable' hand washing sink for a private Tattoo studio with my business partner because the health regulations state you can't pass a doorway to wash your hands where we live, and it'd be cheaper to build one instead of running the water line to the space. We have a Bosch 4 Gallon Tronic 3000T water heater that looks a lot like yours, we were wondering if it's realistic to set up a system of jugs and pumps of clean and grey water to get a concession sink system going? My original inclination was when we bought the heater...

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Gas control valve

Resource:
Troubleshoot and replace by type of gas control valves
Troubleshoot gas water heater
Troubleshoot FVIR system

How to light water heater
How to adjust temperature


Use pipe to remove gas control valve
How to replace water heater gas control valve thermostat
Do not remove valve from tank to replace Honeywell gas controls
How to replace Honeywell gas control valve

Gas shut off valve

Resource:s
Emergency steps for leaking water heater
How to install gas water heater
Water heater safety precautionsBuy ball valve
Brass Gas ball valve at Amazon

Ball valve is OFF when handle is perpendicular across gas or water line


All ball valves are same
Same for gas and water lines.
1/4 rotation needed to turn ON or OFF
When handle is perpendicular to line, then valve is OFF
Buy ball valve/ water
3/4" ball valve at Amazon
Brass ball...
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ACWH
Air Conditioner Water Heater
Frequently Asked Questions

What is an ACWH?
How much hot water can it make?
How hot will the water get?
How much electricity does it use for indoor cooling?
How much additional electricity is used when it is heating water?
Can I install it myself?
How much does it cost to have it completely installed by a professional?
How far from the water tank can the outdoor AC unit be located?
What are the other installation limitations?
What is included?
What else is needed to install the ACWH?
What options are available?
What about adding additional refrigerant when the line-set is extended?
What is the warranty?
Are there any safety issues?
Can it be shipped air freight?
How does it compare to solar water heating?
Can I convert my existing air conditioner to make free hot...

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So I have a water meter in our basement, connected to the city line via copper (it's also our electrical ground). From the meter is decades-old galvanized leading to a leaky shutoff (which I plan to replace). This galvanized goes forth through the house, with more recent connections to rooms made with PEX.

I moved the kitchen water line yesterday and we had a whole-house pressure drop. I believe corrosion has dislodged and become stuck in the line, so I plan to replace the remaining cold water galvanized with PEX.

My question with this: is there a reason to avoid PEX coming from the indoor meter? I'm thinking not, because it's cold water (I know I need 18" copper going into the water heater). I'd rather redo the line in PEX and go into a manifold if I can. But, I can do copper if there's a compelling reason to do so. I plan to check with the city on the meter itself, but thought I'd ask you-all first....

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siphon

ALL dip tubes, even in the 50's, have an antisiphon opening in them. The vacuum relief valve is only beneficial if the heater is elevated to the point where enough negative pressure could be produced to collapse the tank, but this would be a different scenario than a typical water heater siphonage. In that situation the dip tube opening would be ineffective unless a faucet were opened at the same time. OUR code does not specify, not require, a vacuum relief valve, although it does require the dip tube opening which all heaters have as a matter of course. There are situations where "what works" and "what is code" conflict, and when that happens an intelligent plumber working with an intelligent inspector, (I know that is almost an oxymoron but there are a couple out there), will come to an...

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Cross-linked polyethylene or PEX tubing is commonly used in radiant heating systems. While other types of tubing require elbows, connectors and other fittings in order to complete a plumbing project, PEX tubing allows easier plumbing installation. PEX tubing is very flexible and easy to manipulate. It can can be crimped and bent to provide easier installation. In connecting PEX tubing to a water heater, do not do so directly. It is recommended to install a metal connector to the water heater first before connecting the PEX tubing. Here’s how:

Step 1 – Shut Down the Water Supply

Shut down the water supply first before working with the connection.

Step 2 – Connect the Metal Connector to the Water Heater

Before connecting the PEX pipe to the water heater, find a suitable metal connector to install onto the water heater. A copper stub-out elbow and a copper pipe will do. Connect one end of the stub-out elbow to the water heater by soldering the...

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