40 Gallon Slim Gas Water Heater Installation in Tulsa

This Tulsa home needed a new gas water heater, and the space only fit a slim model.

Casey and Cody measured the spot and confirmed a 40-gallon slim gas tank was the right fit. A slim tank is taller and narrower than a standard 40-gallon, which is what makes it work in closets and tight utility spaces.

Here's everything that went in with the tank, straight from the job record:

• 40-gallon slim gas water heater
• A water heater pan under it
• A water alarm sensor
• An expansion tank
• A 3/4-inch ProPress ball valve and male adapter for a new shutoff
• Two stainless steel flex connectors, three stainless tees, three stainless shoulder nipples, a 6-inch stainless nipple and a stainless 90
• Two threaded water hammer arrestors
• A 1/2-inch gas stop and a 1/2-inch drip leg setup on the gas line

• Pan and water alarm. If the tank ever leaks, the pan catches it and the alarm tells you before it becomes a ceiling or floor repair.
• Expansion tank. Heated water expands. The expansion tank gives it somewhere to go, which takes strain off the tank and your fixtures.
• Drip leg and gas stop. The drip leg catches debris before it reaches the gas valve, and the gas stop lets the heater be shut off on its own.
• Stainless flex connectors. The flex connectors on top are a very common leak point, so we start fresh there.

Plan on replacing a tank water heater around 10 to 15 years, and sooner only with heavy rust at the top fittings or in the combustion chamber. Tulsa water is hard, 5.2 to 8.2 grains per gallon depending on the treatment plant, so we suggest a yearly flush to keep sediment out of the bottom of the tank. We install AO Smith tank water heaters, and a 40-gallon AO Smith starts at $2,575.

More on water heater repair and our water heater replacement guide.

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