How To Look At A House

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site-built, mobile/manufactured and modular homes

Can you install a gas water heater in a closet?

Wednesday, January 15, 2020

Yes, a gas water heater can be installed in a closet as long as the closet is not used for storage. The International Residential Code (IRC) specifically bans a storage closet as a location for a gas water heater. Here’s the code citation:

    But we regularly see dedicated water heater closets packed full of boxes and brooms and mops during home inspections anyway. This is a safety hazard and a warning about keeping flammable items away from the water heater is printed on the tank. Also, a route for sufficient air for combustion air to enter the closet has be provided.  

   See our blog post Where are gas water heaters not allowed to be installed? for more details and other locations where gas water heaters are not allowed, and What is the difference between a regular water heater and a direct vent water heater? for a description of them. 

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Here’s links to a collection of more blog posts about WATER HEATERS:

When was a gas water heater first required to be elevated 18 inches above a garage floor?  

Can the temperature and pressure relief (TPR) valve discharge pipe for a mobile/manufactured home water heater terminate under the home? 

What is the purpose of a thermostatic mixing valve above a water heater? 

Does a tankless gas water heater still work with no electricity during a power outage?  

•  Why do water heaters have a sacrificial anode? 

What is the difference between a manufactured/mobile home water heater and a regular water heater? 

Does a tankless water heater require a pressure relief valve?

When is a water heater drain pan required?

Why is there water in my water heater drain pan?

What does it mean when a water heater Temperature/Pressure Relief (TPR) discharge pipe is "trapped"? 

Can I leave a gas water heater in place when remodeling a garage into a family room or bedroom? 

Where do I find the water heater in a mobile home?

Does a tankless water heater in an attic require a drain pan? 

Does an electric water heater require a disconnect? 

Is a catch pan and drain piping required for a replacement water heater?

What is the difference between a single element and dual element electric water heater? 

What is an FVIR water heater?

What is a dielectric union?

What's that powdery crust on the pipe connections at the water heater? 

What are the most common installation mistakes with water heater replacement?

Why is my water heater making strange (rumbling, gurgling, knocking or banging) noises? 

What can I do to make my water heater last longer?

How can I determine the age of a water heater if the serial number is missing or decoding it is impossible? 

How does a hydronic heating system work?

What is the difference between a regular water heater and a direct vent water heater? 

What is the difference between a regular water heater and a power vent water heater?

What is backdrafting at a gas water heater? 

How do I determine if a water heater is gas or electric?

What does it mean when a gas appliance (water heater, furnace, or range) has been "red tagged"?  

• What's the valve with the flip-up handle on the water heater for?

• Why is an older water heater an insurance problem?

   Visit our WATER HEATERS page for other related blog posts on this subject, or go to the INDEX for a complete listing of all our articles.

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