How to Choose Gas Tankless Water Heater

A gas tankless water heater is becoming even more popular today, all for good reasons. So for today’s article, I will take you through what you need to know in order to make a well-informed buying decision.

Here are some factors you need to consider before buying a gas tankless water heater:

1. Size

Let’s begin with the most basic part, the water heater’s size. But I’m not talking about its length or width, I’m talking about flow rate or the amount of water you will get in your bathroom in terms of Gallons per Minute (GPM).

You will need an appropriate size of the heating unit to make sure you will have sufficient hot water at home. An average flow rate for a medium-sized household with two showers can be fulfilled by a water heater with 6.6 GPM.

Of course, you don’t want too much too, there’s no sense in investing your money for something that has been designed to run more than a few units, so you must know how much your household needs.

2. Ventilation

Since your unit will be running on gas, it will need a space where it can vent its residue. You can purchase a ventilation kit, however, you have to remember that not all ventilation kits are suitable for each machine. There are heaters that need special ventilation.

Knowing clearly what ventilation is required for your water heater will absolutely help you save a lot.

3. Energy Efficient

Make sure that you’re buying an energy-efficient water heater too, this will help you save a huge amount of money in terms of cost and heating bills. Look for gas tankless water heaters that come with at least 60 to 70% thermal efficiency, there are even some that can reach up to an impressive 95% thermal efficiency.

4. Waiting Time

This refers to the duration of the hot water to flow out of the pipe to reach its destination. The longer the waiting time is, the more cold water will be wasted and this can affect your water bills.

So make sure you’re choosing a unit that has fast waiting time.

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