As more and more American homeowners make the switch from traditional water heaters to high performance tankless designs, numerous opt to replace their heaters by themselves, instead of calling a professional plumbing company. While it’s certainly possible to install a tank less water heater on your own, you should just do so if you’re absolutely specific you can take on the difficulty, and have the right tools and expertise for the task.

Tank less water heaters can help you save dramatically on everyday water and energy consumption, it’s no wonder that, when traditional units begin to reveal signs of age, many make the upgrade.

Step 1: Preparation and Safety Precaution

Setting up a tank less water heater on your own is among the most hard DIY plumbing projects we’ve talked about in our blog. Tank less heating units usually require a larger supply of power and broader exhaust system, and you might wind up with more work than you initially bargained for in your efforts. In addition, a typical gas supply line product, corrugated stainless steel tubing (CSST), can end up being broken or burst in some environmental situations, tossing added complication into your job.

Check out the rest of this guide to determine if you’re up to the job, and if not, do not hesitate to have an expert plumber handle the installation for you. It’s better to be safe than sorry.

Proceeding to the products you’ll require for the task. When it comes to setting up a tank less heater, the majority of the the tools and fixtures you require will come packaged with the system:

Your brand-new tank less heater, plus the hardware and instructions that come packaged with it

  • A screwdriver
  • CSST supply line
  • Gas line adapter
  • Brand-new water lines (as needed).
  • Hanger brackets for the water lines.
  • Heat-resistant sealant.
  • A container.

During the preparatory stage, you need to also research building codes in your state and city to guarantee you have the clearance to install a tank less water heater, as well as CSST pipeline, in your house.

Step 2: Removing the Old Heater Unit.

It ought to come as no surprise that the first huge step in installing a tank less water heater is removing your old, traditional heater system. Start by switching off the supply of water to your home and detaching the old device from the supply of water line. As there may be some water left in the supply line, this is where having a bucket on-deck can help.

Next, you’ve got to disconnect the system from its heat source. For electric heating systems, all you’ll need to do is unplug the heater from its outlet. For gas heating systems, turned off the gas supply valve before moving on. As soon as you’ve totally released your conventional water heater from all power and supply lines, get rid of it in accordance with regional laws.

In Sacramento (and all of California), merely trashing old water heaters is forbidden, as they typically contain pilot light sensors – which consist of mercury. Instead, you must call a recycling and waste management firm in your location to throw away your old water heater. A list of Californian hazardous waste agencies can be discovered right here.

 Step by Step Guide to Installing a Tank less Water Heater

Step by Step Guide to Installing a Tank less Water Heater

Step 3: Mounting to the Wall and Connecting Utilities.

To really mount the brand-new heater system to your wall, carefully follow manufacturers directions and utilize the hardware offered. Make sure that the unit is properly supported and attached to your wall.

Link the water line to your mounted device (or set up a new one, if essential), and make use of hanger brackets to hold the pipe in place and avoid it from touching walls and other surface areas. Solder pipe joints as required.

The following directions are for gas-powered tank less water heaters. With the water line connected, set up a gas line adapter to your existing line, and run a CSST supply line through the other end. Make sure the gas line is still shut down, and connect the CSST line to your tank less heater.

Tighten up all nuts and gas line connections, and switch on the gas. At this phase, you might wish to use a gas sniffer to check for gas leaks or loose fittings. If there are no such leaks, you can turn on the gas and pilot light as per manufacturers directions and test your device. It may take time to at first warm up water on very first use.

For electrically-powered tank less heaters, all you have to do as soon as the water line is connected is plug into a power supply. From here, you can examine your system and enjoy hot water at much greater performance – and lower cost – than you would with a standard heater.


If you need a Fort Myers Plumber to assist you with your plumbing projects, please call us today at (239) 260-4446, and we’d be happy to provide you with a free quote.

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