How to hook up a gas range
Hooking up a gas range or water heater is a relatively simple job requiring just
basic tools and readily available supplies. And if you
use the right materials and follow instructions carefully,
you can safely do the job yourself. A professional
may charge as much as a few hundred dollars for a hook-up.
We'll show you in this article how to do two basic
types of gas connection: hooking up a gas range using
a flexible, corrugated connector (a gas clothes dryer is
similar); and using threaded black
steel gas pipe to hook up a water heater.
Flexible corrugated gas connectors and gas pipe and fittings (black) are available at most home centers and well-stocked hardware stores. Stainless steel or coated brass
connectors are the only type of flexible connectors sold these days, and the only type you can
safely and legally use. Older types of
corrugated connectors—sold until
the 1980s—made of
uncoated brass or other metal have
been found to be unsafe. Have one in
your house? Replace it now!
The most important step to a safe
installation is to buy the right connector.
Here's what to look for:
- Buy a connector that is clearly
marked for the appliance you're
hooking up—either “range” or
“dryer.” Typically the corrugated
tube of a range connector is 1/2 in. dia. i.d. (inside diameter), and a dryer
connector is 3/8 in. dia. i.d. These
dimensions are not always marked on
the package, but they will be marked
for either range or dryer.
- Buy a connector that comes packaged
with the end connector fittings you need (see Photo 3). Usually
the gas line coming into your
kitchen will be 1/2-in. black
threaded pipe, and the connection
to the stove will be either a male
(external threads) or female (internal
threads) 1/2-in. fitting. If you
cannot find a connector package
with end fittings that match what
you need for the gas line, use a
black gas pipe fitting on the line to
accommodate the end connector
fitting. For example, in Photos 2
and 3, we show a 1/2-in. x 3/4-in.
coupling on the gas line to accommodate
the 3/4-in. end connector
fitting. (For more possible connections and information about connecting to soft copper supply lines, see How to Connect Gas Pipe Lines)
- Use a connector that's plenty
long so you'll have enough room
to work between the stove and the
wall. They come in lengths from 24
in. to 60 in.
- Don't reuse a flexible connector;
if you get a new appliance, buy a
new connector as well.
Follow the instructions for
installing the connector religiously.
Our Photos 1 through 5
give a real-life picture of how this is
done. Here are some additional
- Be careful not to kink or force
the corrugated connector into
sharp bends, which could eventually
cause a break.
- Always check your work for
leaks (Photo 6). Gas leak detectors are sold at home centers, hardware stores and online.
- Although it's not always
required to have a range
that you call your
local gas company or
plumbing inspector to
check your work.
Back to Top
Hook up a gas water heater
The gas connection to a water heater
is usually done with rigid 1/2-in. dia.
black gas pipe. In some areas, it's
acceptable to use a flexible stainless
steel connector, similar to a range
hook-up, but check with your plumbing
inspector or gas utility first. Rigid
pipe is preferable, since a water
heater's gas line is exposed and more
vulnerable to movement and damage.
In many cases, the gas port on your
new water heater will be in the same
location as the old one, relative to
your gas line. This makes the hook-up easy: Just remove the short lengths of
pipe and fittings, as shown in Photos
2 and 3, clean the threads, apply new
Teflon tape to the threads, and reconnect
the entire assembly exactly as it
However, if the heater's gas port is
in a different location, you will have to
change the length of one or possibly
two short lengths of pipe, as shown in
Photo 4. Nipples—short lengths of
black pipe—are sold at most home
centers in 1/2-in. increments for the
Here are some guidelines:
- Use yellow Teflon tape, intended
for threaded gas connections, not
white Teflon tape, which is thinner.
- Test all your joints for leaks.
- In most, but not all areas, a
permit and inspection is
required for a water heater hookup.
In either case, we
that you call your local
gas company or
plumbing inspector to
check your work.