Step-by-Step Guide on How to Install Water Heater in Minneapolis

Step by Step Guide on How to Install Water Heater

When you install water heater in your home, it is a significant task that can improve your daily living by providing consistent hot water. Whether you’re replacing an old unit or setting up a new one, understanding the proper steps and precautions is crucial for a successful installation. In this step-by-step guide, we will walk you through everything you need to know to install water heater safely and efficiently. 

From turning off the power and water supply to setting the correct temperature once everything is hooked up, we’ve got you covered. Let’s dive into the process and ensure you can enjoy the usefulness of your new water heater without any hiccups.

Step 1: Turn off the Electricity and Water Connections

Before starting, ensure safety by turning off the electricity at the circuit breaker and shutting off the water supply. For gas heaters, turn off the gas and disconnect the gas line. It’s crucial to ensure that all sources of power and water are completely shut off to prevent any accidents or damages during the installation proces

Step 2: Drain the Old Water Heater

Tie a garden hose to the drain valve found at the bottom of the existing water heater and run the other end to a drain or outside. Open the drain valve and permit the tank to empty completely. This might take some moments, so be patient. Draining the old water heater is essential to remove any sediment and water before removal, which will make the unit lighter and easier to disconnect and remove.

Step 3: Disconnect the Old Heater

Once the old water heater is fully drained, disconnect the electricity or gas supply. Then, disconnect the water supply lines and the discharge pipe for the temperature-pressure relief valve. For gas heaters, also disconnect the vent pipe. Make sure to handle all connections and pipes gently to avoid any damage.

Step 4: Remove the Old Heater

After all connections have been safely disconnected, carefully remove the old water heater. This step may require assistance due to the weight and size of the water heater. Ensure the path is clear, and use a dolly or hand truck if available. Properly disposing of the old heater, according to local regulations, is also essential.

Step 5: Prepare for New Heater Installation

Prepare the area where you will install water heater. Make sure the space is clean, level, and compliant with local codes and manufacturer’s instructions. This may involve adjusting the plumbing or installing a new drip pan and earthquake straps if required. Ensuring the new heater’s space is correctly prepared will help avoid any installation or operational problems.

Step 6: Install Water Heater

Carefully install water heater into position, aligning it with the existing plumbing and venting connections. Connect the water supply lines, ensuring the use of new fittings if necessary. For gas heaters, connect the gas line using approved materials and check for leaks using a gas leak detector or soapy water solution. For electric heaters, complete the wiring according to the manufacturer’s instructions and local codes.

Step 7: Fill the Tank and Inspect for Leaks

Gradually open the water supply valve to fill the new water heater tank. Check all connections for leaks while the tank is filling. Once full, open a hot water faucet somewhere in the house to release air from the system. Ensure the tank is completely filled before turning on the power or gas to avoid damaging the unit.

Step 8: Turn On the Power and Set Temperature

Once the tank is filled and all connections are secure and leak-free, turn on the electricity at the circuit breaker or the gas supply and light the pilot, following the manufacturer’s instructions. Set the thermostat to the desired temperature, generally between 120°F and 140°F. Allow the water heater to heat up for several hours, and then check the hot water taps for hot water.

Install Water Heater FAQs

Step by Step Guide on How to Install Water Heater

How do I select the correct size water heater for my home?

Choosing the correct size water heater is crucial to guarantee it meets your household’s hot water needs without wasting energy. Consider the number of occupants, your peak water usage times, and the types of appliances that use hot water in your home. Tank water heaters are typically sized by the gallon capacity they hold, while tankless water heaters are sized by the flow rate of hot water they produce per minute.

Can I install water heater, or should I hire a professional?

While some homeowners may have the tools and skills to install water heater, it’s often recommended to hire a professional, especially for gas water heaters, which require knowledge of gas lines and venting requirements. Professional water heater installation can ensure it meets local codes and safety standards. If you’re not experienced with plumbing or electrical work, hiring a professional can save time and prevent potential issues.

How do tank and tankless water heaters differ from each other?

Tank water heaters hold and heat a large volume of water in a tank, ensuring hot water is available when needed. They are commonly less expensive upfront but can be less energy-efficient over time. Tankless water heaters, also termed on-demand water heaters, heat water directly without the usage of a storage tank, which can lead to greater energy efficiency and endless hot water but at a higher initial cost and potentially higher installation expenses.

How often should I execute maintenance on my water heater?

Regular maintenance is pivotal to extending the life of your water heater and guaranteeing it operates efficiently. It’s recommended to perform an annual maintenance check, which includes flushing the tank to remove sediment buildup, checking the anode rod for corrosion, inspecting the temperature and relief valve for proper operation, and ensuring the venting system is not obstructed (for gas water heaters).


It is clear that when you install water heater, it involves dealing with water, electricity, or gas, which can be hazardous if not handled properly. If you’re not comfortable with any part of the installation process, it’s best to call in the experts. We offer water heater installation services to ensure your new water heater is installed efficiently and safely. Contact us today at True Plumbing Solutions to schedule your installation and enjoy the peace of mind that comes with professional service.