I have not hot water out of the kitchen sink.
Cold works.
Hot water works from every other location,
House is built on a slab.
Hot water boiler heat inside the slab (The snow that
touches the house on the outside melts, so I don't
think the line has frozen.)
The shutoff valve is open.

Any suggestions?

 

What brand and type of kitchen faucet do you have
(such as "Delta single-lever", etc.)?
Sounds like you just need to get a bubble-pack repair kit, with directions on the back, and replace the internal parts of the faucet.
Let us know, and we'll try to help you.

 

Has the snow that touches the outside wall ALWAYS melted, or is this new?

At minimum, leave cabinet doors open under the sink. As soon as you have time, I would open the hot water tap, and take a hair dryer and heat every part of the hot water line, under the sink, and anywhere else that you can see that same line. DO NOT use any excessive heating mechanism, like a propane torch.

Assume this sink is against an outside wall?? What type of line is it, copper, galvanized pipe, cpvc, or what?

Also, leave the cold water drip, until you are sure you have the problem resolved, or you will be back reporting two lines with no flow.

Is there a bleed valve on the shutoff valve to the hot water (a small round cap that you can unscrew)? If so, unscrew it and see if you get water out.

I don't understand the comment about hot water boiler heat inside the slab, it might be good to explain this also.

Give us some more feedback, I'm sure someone can help.

Good Luck,

Rick

 

The problem is before the faucet.

I also took the shutoff valve off the end of the pipe and nothing came out, (the end of the copper pipe was totally open) I followed the Copper pipe and it follows the wall until it comes to a common wall with the bathroom, (its completely exposed) then it goes into the slab. The exposed copper pipe is inside the kitchen (its not that cold)

The snow that touches the outside wall melts because the house is heated through the slab, I included that so that people would know there isn't as much of a chance off the pipe freezing.

The sink is on an outside wall but the copper pipe runs under the sink and its against the wall just under the drywall edge. There is a 1x4 on its side beanth the drywall
and the pipe runs in a notch in the edge of the 1x4.

The hot water boiler heat inside the slab, The house has a boiler for heat, the lines are run inside the slab, and the floor gets warm enough to heat the house, (that is also how the snow melts.) If this is new, I don't know this is my first house and I bought it in June.


Does this sound reasonable,
Turn off supply to water heater, remove preasure (if any) remove the hot water from the top of it, then go to the sink and put a loop on the cold water to make it go inside the hot water pipe instead of the faucet.and try to get water to come out by the waterheater, (kind of reverse the flow if anything is blocking or pluging it.)

 

Strange as it may sound, hot water freezes faster and easier than cold water. (That's why some people hook up their icemaker to a hot water line.)
Your problem sounds like the hot water line is frozen, but like you, I can't see how. HOWEVER, before I tried all of the back flushing, I would replace the cut-off valve and do the hair dryer first, as Rick suggested, to eliminate that possibility.
IF that doesn't do it, then I would look for something that could cause a 1/2" water line under pressure to plug up. About the only thing that I can think of would be pieces of a deteriorated water heater dip tube clogging it up.
There IS a class action dip tube settlement with water heater manufacturers (claims expire Dec. 31).
Turn the power OFF to your water heater before cutting off water, if you do, because if it goes down enough in the tank it will fry an element.
This has my curiousity up. Let us know how you make out.
Mike

 

It must have froze
Oddly enough when I traced the pipe under the sink and behind the stove it must have given it the warm air it needed.

Thank you for your help.

 

Great! Glad to hear that your problem is solved.
By the way, Rick, an engineer, explained to me via email that hot water does NOT freeze faster than cold water.
(It's just a myth that I repeated). Duh! LOL