Ask This Old House plumbing and heating expert Richard Trethewey helps a homeowner add an outdoor faucet with both hot and cold water.
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Time: 4 hours

Cost: $700

Skill Level: Moderate

Tools List for Bringing Hot Water Outside:
Compact pipe cutter
Drill with hole saw attachment
Torch
Adjustable pliers

Shopping List:
Frost proof wall hydrant
Solder
Flux
Copper female adapters
Copper pipe and fittings
Thread sealing tape
Silicone caulking
All weather screws

Steps:
1. Before doing any plumbing work, turn the water off at the water main.
2. Use the compact pipe cutter to cut the cold line to the existing outdoor faucet. With the line cut, remove the old faucet.
3. Measure the center to center distance between the hot and cold pipes on the new faucet.
4. Transfer that measurement to the wall, using the old cold line hole as a reference for the new hot hole.
5. Use the drill with a hole saw attachment to drill a hole for the new hot water line.
6. Loosen and remove the stem units so the washers on them aren’t destroyed by heat when soldering.
7. Use thread sealing tape on the male ends of the wall hydrant, then thread on copper female adapters.
8. Cut two pieces of copper pipe about a foot long to fit through the wall.
9. Clean the inside of the female adapter and the outside of the copper pipe using plumber’s sand paper and apply flux to those same spots. Solder the joint together using the torch and solder.
10. Apply silicone caulking to the back of the hydrant and push the assembly with pipes into the holes in the wall. Secure with all weather screws.
11. Use copper pipes and fittings to make the connections from the backside of the hydrant to existing hot and cold water lines inside. Add ball valves to each line for future service.
12. Reinstall the stem units and turn the water back on.

Resources:
The Woodford Hot and Cold water frost-free outdoor faucet can be found at the local plumbing supply center or online at Woodford Manufacturing Company (http://www.woodfordmfg.com/)

About Ask This Old House TV:
Homeowners have a virtual truckload of questions for us on smaller projects, and we're ready to answer. Ask This Old House solves the steady stream of home improvement problems faced by our viewers—and we make house calls! Ask This Old House features some familiar faces from This Old House, including Kevin O'Connor, general contractor Tom Silva, plumbing and heating expert Richard Trethewey, and landscape contractor Roger Cook.

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How to Bring Hot Water Outside | Ask This Old House
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