The best gas hot water heaters are high-efficient, high performing and environment-friendly systems, great choice for the homeowners that are looking to buy a brand new or upgrade an existing water heater. Even if you already have an electric unit, you might want to switch to gas, because of all the benefits and savings natural gas and propane-powered water heating devices bring.
Let's see what these benefits are, how gas hot water heaters compare to electric, top-selling brands, prices and where to shop for the deal.
This review and provided links are about gas water heating in residential homes, powered by propane and natural gas, and are providing tips for buying, covering both storage tank-type and tankless models. The articles also include reviews of the most popular manufacturers and models, installation, and maintenance tips, the most common problems, and help with the troubleshooting.
Gas hot water heaters are designed to use both natural gas and liquid propane - LP. Most of the built and sold water heaters are factory set to use natural gas as it is widely used and cheaper than propane.
When comparing natural gas vs. propane, it is worth mentioning that the energy factor (EF), is almost the same for most brands of gas heaters, both heating water fast.
There are two types you can choose from; storage tank type and tankless, advanced with and conventional without condensing technology.
Tank-type water heaters are designed with the water storage tanks that have capacity from as little as a few gallons to over 100 - for residential homes. Hot water is always ready and available. The advantage over tankless type is the lower cost and simpler design, so less prone to failures. Best selling models utilize condensing technology, such as this Vertex model from AO Smith.
Tankless does not store hot water but heat water as needed - on demand. Hot water is not seating at the bottom of the unit but is always delivered fresh. The greatest advantages over the tank-type are small design, advanced technology, longer life, energy savings, and flexible installation. Savings are even higher if the condensing units are chosen, which also gets lower energy consumption and better environmental protection. Good examples are those below, found as the best selling models.
This is an important one because a properly sized water heater will provide enough hot water for a home, resulting in increased comfort, efficiency and savings.
Storage tank-type gas hot water heaters are usually installed in a designated room, standing on the floor, while tankless, because of its small size and flexible venting options, almost anywhere, but mainly on the wall.
The most popular models are those with the tank capacity of 40, 50 and 60 gallons, as they can produce enough hot water for families of four, and homes with up to 2 baths, yet still being affordable. For the same family size, tankless water heaters with the flow rate of 8 gallons per minute or more will do the same work.
Other important factors to consider when looking for gas hot water heaters to buy, install or troubleshoot, are the options you have for the efficient and cost-effective venting.
When the gas water heater is running, it requires fresh air for combustion and ignition, and it can be used either from indoors or from the outside. It is also vital to safely remove products of combustion/flue gases outside, using the house chimney or provided vents.
There are several types of venting systems one should consider:
If looking to buy the best tank-type gas heater, check out AO Smith GDHE-50-NG Vertex 100 or Polaris Water Heater, both with an ultra high energy efficiency of 96% making it the most energy-efficient models on the market. The first-hour rate on both units is very high, delivering hot water fast and when needed.
If looking for the best tankless, the recommendation is to buy one of the condensing units, such as Navien, Rinnai or Noritz, as they are known for ultra-efficient water heating, fast hot water delivery when needed and in endless supply.
Money saving tip: If gas hot water heaters are expensive to buy, renting one is always an option. Renting a water heater is convenient and gives you peace of mind, so if anything goes wrong with the unit, most parts and service are covered.
If planning to switch from an existing heating system to a new one, using natural gas or propane, consider next:
Once the hot water tap is open, hot water from the top of the tank starts running through the hot water outlet to the faucet or shower. At the same time, cold water enters from the bottom through the dip tube.
The thermostat senses the cooler water and turns on the gas at the gas valve and the burner that is mounted at the base of the tank. Thermocouple, as a safety element, sends the signal to the gas valve to open - only if there is a presence of a pilot flame to lit the gas. Once the flame is established, water is heated, and the products of combustion from the combustion chamber are removed through the flue vents out.
Gas water heater in beauty salon
Is it safe to install a gas water heater in a beauty salon? I am afraid of installing one because of all the chemicals we are using??? Thanks, Sue …
Checking venting on a gas water heater
I have a Rheem Fury gas water heater that was running great until two days ago. It seems that the upper surface of the heater is hotter than usual, and …
Gas Water Heater Condensation
I have an 8 year old gas hot water heater with a power vent and a condensate drain portal at the base of the vent pipe. The unit has worked fine with …
What to do to get a heater to vent properly
Purchased a Reliance 30gal gas hot water 6/29/11. It would not vent properly and would overheat when burner turns on. We were told the chimney was blocked …
How to horizontally vent a gas water heater?
What are the requirements and how to properly vent my tankless water heater horizontally?
How long for 40 gal water heater to recover?
Is the 40 gallon water heater using a natural gas enough for my family of four? Is recovery rate more important than the first hour rating?
High operating costs on my Rheem water heater
I have a Rheem tank type water heater, 8 years old, that is expensive to use now. Water heater is located in my garage and the operating cost (energy consumption) …
Question about water heater flame color and size
I have a natural gas water heater that when heating the water is producing more dirt than usual and it is smoking. What the??? I called my utility gas …
New gas water heaters are safer than the older types.
The 40 and 50 gal gas water heaters mfg after 2003 are FVIR water heaters. Flame Vapor Ignition Resistant water heaters will protect you from any combustible …
How much can I save by insulating my hot water pipes?
Is there any reason why should I put an additional insulation on my water heater and surrounding pipes? My water heater is located in the basement where …
Gas water heater is leaking from the upper valve
I have a natural gas water heater for 8 years, and never had problems until now. This morning I have found a puddle of water under the water heater. …
My Eccotemp L5 water heater Not rated yet
I have purchased the Eccotemp L5 tankless water heater as I needed a portable unit that will be mobile and compact so I can install and use it whenever …
Hot and cold water flow Not rated yet
We are on a well association of 45 homes. We had to turn our water off for 30 minutes the other day at the meter. No issues, but it was off for 30 minutes. …
Why proper venting on gas water heaters is important? Not rated yet
Did you ask yourself is the room where your gas water heater is installed, properly vented? Does it produce the pilot outage or improper gas burning? …