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Water Heaters

After heating and cooling, water heating is typically the largest energy user in the home because it is necessary for so many domestic activities. The capacity of a water heater is an important consideration. The water heater should provide enough hot water at the busiest time of the day. We offer a wide variety of electric, gas and tankless water heaters.

 

Tank Water Heaters

Pros:

  • Proven technology that home owners know and trust. The straightforward system has been around for years and works well.
  • Lower product cost and low installation cost. Installation is fairly simple.
  • Energy Star tanks are now available. As of this year, the Energy Star program certifies conventional high-efficiency gas water heaters, so it’s possible to save energy and money. Units must have an energy factor of .62.

Cons:

  • Conventional tanks are always on. No matter how energy efficient it is, a storage tank cycles on a regular basis to heat and reheat water at a preset temperature, using energy to heat the water whether a homeowner needs it or not.
  • Big and bulky. Most storage tanks take up precious real estate in a mechanical or laundry room, especially in smaller homes such as apartments, condos, or townhouses.
  • May be inadequate. Depending on the capacity and household hot water needs, a conventional storage tank may not be able to meet demand. If not sized correctly for peak demand, tank water heaters will run out of hot water.
  • Less versatile installation. The unit needs a fairly large space for installation and cannot be located outside the home.
  • Less durable. The life expectancy of a conventional hot water tank is about 12 to 15 years.

Tankless Water Heaters

Pros:

  • Saves energy. The unit only operates when there is a demand for hot water, which can reduce its energy cost by about 25% annually.
  • Highly efficient. The most efficient storage tank has an energy factor of about .67, but, according to Energy Star, some tankless units have energy factors as high as .95.
  • Reliable. If a unit is sized properly, a gas tankless heater can deliver a continuous supply of water at a preset temperature (plus or minus one degree) at a rate of typically 2 gallons to 5 gallons per minute. The units never run out of hot water, though the flow rate may be inadequate during times of peak demand.
  • Compact size. The typical tankless heater is about the size of a small suitcase, which takes up significantly less space than a conventional tank.
  • Durable. It has a life expectancy of 20 years or more.
  • Versatile. The unit is easy to zone and it can go almost anywhere in the house. It also can be installed outside on a wall.

Cons:

  • Tankless units cost about twice as much as traditional storage tanks.
  • Installation is expensive. In addition to the high product cost, installation for the unit and the necessary piping can be pricey. They also need very good venting, which is also expensive.
  • Retrofit can be pricey and complicated. Unlike a traditional tank, retrofitting a home with a tankless unit can require different venting and gas piping.
  • Best performance comes from gas units. Though gas-fired tankless units are great performers for whole-house use, electric units are woefully inadequate. Electric units are not Energy Star-rated.

Let our experts help explain all the details and customize a solution that's right for you.

Frequently Asked Questions

What does the Energy Factor (EF) on my water heater mean?

The water heater Energy Factor (EF) is a measure of the overall efficiency of the water heater. This is determined by comparing the energy in the heated water used daily to the total daily energy consumption of the water heater. The EF can be used to compare the energy efficiency of water heaters. Water heaters with higher EFs will have lower annual operating costs than comparable models with lower EFs. A higher EF signifies a more efficient model. Water heaters with high EF ratings may cost more initially, but save energy and money in the long run. Eventually, they will pay for themselves through a lifetime of energy savings.

Where is the "anode rod" and what does it do?

For most water heaters, the anode rod is attached to the hot water outlet of the water heater. If you are facing the front of the water heater (where the labels are), the hot water outlet is on the left hand side. The anode rod is often referred to as a "sacrificial rod".

Most water is rarely "pure". It can contain oxygen, magnesium, fluoride, chlorine and suspended particles. These components, in the concentrations in your water, are usually not bad for you. However, they do contribute to the taste and smell of the water. They also impart a slight conductivity to the water. Through an electrical process called electrolysis, this conductivity will eventually (over a long period of time) cause most metal to rust or corrode. When the water is heated, this electrical process can be accelerated.

Most water heaters are made of a steel tank with a porcelain enamel (glass) lining. However, due to production and assembly methods, it is not always possible to completely cover the inside of the tank. Therefore it is important to provide metal that can be consumed by the electrical process. This is where the sacrificial anode rod comes in. By acting as a lightning rod for the corrosion process, the anode rod draws the harmful electrolytic process away from the water heater tank and focuses the corrosion on the anode rod. Water heaters need this sacrificial anode rod to ensure that the electrolysis does not affect the tanks.

Why doesn't my old water heater make as much hot water as it used to?

The answer may be that you have sediment buildup in your tank. As water heaters age, they tend to accumulate sediment and lime deposits. If the heaters are not cleaned periodically, the sediment may rise to a level that will act as a barrier between the burner and the water, making it harder to heat. An article published in a national ASPE plumbing journal states: for every half inch of sediment on the bottom of a gas fired water heater, it requires 70% more fuel to heat the water.

If my water heater was in a flood, do I need to replace it?

Yes. The Air-Conditioning, Heating and Refrigeration Institute (AHRI) recommends that any flood-damaged heating and cooling equipment be replaced, not repaired. From the AHRI website, as it pertains to water heaters:

"Whether your water heater is gas-fired, oil-fired or electric, if it was exposed to flood water, the unit should be replaced.

In a gas unit, valves and controls will likely corrode. In an electric unit, the thermostat and controls will likely corrode. In both types, the insulation surrounding the unit will be contaminated and will be nearly impossible to disinfect. Additionally, the insulation would take a long time to dry, leading to corrosion of the tank from the outside.

Even if water heater components have been cleaned and the unit seems to operate properly, parts may corrode in the future. Both gas and electric water heaters have a pressure relief valve that can corrode and stick after being exposed to flood water. Therefore, be sure to replace this valve as well."

(Taken from www.ahrinet.org)

At the suggestion of AHRI, be sure to have your inspection and replacement work performed by a qualified professional.

Can I use my water heater with a solar heating system?

With the increasing costs of energy and a desire for environmental friendliness, some customers are turning to the sun as a way to heat their domestic water. Bradford White manufactures a solar water heating storage tank for use with solar systems. This tank takes the heated water from the solar panels and uses it as a heat source instead of conventional gas, oil or electric heat sources unlike other tanks, this water heater has an electric heating element for back up on cloudy days, and when the solar system is not providing enough heat. However, it is important that you use only POTABLE (or domestic use) water in this tank.

Is a drain pan necessary?

A water heater should be placed in an area that will prevent damage to floors, ceilings, and furniture if the heater leaks. When this is not possible, a drain pan must be installed under the water heater. Since a typical drain pan doesn't hold that much water, it must have a pipe to a drain or other outlet for the water. When installed properly, a drain pan and pipe will keep any leakage under control and protect your belongings from water damage.

What type of maintenance should I do on my water heater?

We recommend that you contact a plumbing professional to perform any maintenance or repairs to your water heater - from periodic checks on the anode rod to ensuring that all connections are secure. Recommendations for maintenance are in your water heater's owner manual. However, there are a few things that you can do:

  • Ensure that there are no sources of flammable vapors in the same area as your water heater (this includes gasoline, heating oils, lighter fluid, propane, etc.).
  • Keep the top of the water heater clean. If you notice water dripping on the water heater from any piping, contact a plumbing professional to have the leak repaired.
  • Keep the space around your water heater clean and free of dirt, boxes, paint cans, aerosol cans, household cleaners and trash. It is important to keep the heater accessible for proper operation and easy maintenance.