HOW TO SELECT THE RIGHT WATER HEATER

HOW TO SELECT THE RIGHT HOT WATER HEATER

There are several option available to you when choosing a new  water heater. By understanding these options you can select the right water heater for your home.

Call Airplus at 416.298.6874 to speak to a Comfort Consultant to discuss your Hot Water needs.

Natural Gas or Electric

Both Natural Gas and Electric water heaters offer significant benefits:

Tank Style Natural Gas Water Heater

Tank Style Electric Water Heaters

  • Require a slightly larger up-front investment, but usually cost less to operate
  • Must be vented outdoors for safety
  • Units with sealed combustion or power venting increase safety
  • Not affected by power outages (tank-style only)
  • Generally cost less to purchase than gas water heaters
  • Easy to maintain
  • Require no combustibles or venting
  • Heat water quickly
  • Offer high energy factor ratings
  • No Hot Water without power.

 

 

Tank Style: Electric Water Heater

Tank Style: Natural Gas Water Heater
  • Generally cost less to purchase than gas water heaters
  • Easy to maintain
  • Require no combustibles or venting
  • Heat water quickly
  • Offer high energy factor ratings
  • Require a slightly larger up-front investment, but usually cost less to operate
  • Must be vented outdoors for safety
  • Units with sealed combustion or power venting increase safety
  • Not affected by power outages (conventional atmospheric or direct vent only)

 

Gas Standard Features

1. Temperature & pressure relief valve
2. Porcelain enamel tank lining
3. Rigid foam insulation
4. Self-cleaning system

  • Fights sediment build-up
  • Reduces energy costs
  • Extends the life of the tank

Gas Storage Tank Options

  • Conventional Vent – vents up the chimney, or a dedicated stack.
    • Least expensive to purchase
    • Lowest energy efficiency
  • Direct Vent – vents combustion fumes directly outdoors – no ventor motor means steady supply of hot water in the event of a power outage
    • Direct Vent has limits  on distance to outside wall.
    • Better energy efficiency
  • Power Vent -vents combustion fumes  directly outdoors
    • Power Vent utilizes an electric ventor motor to exhaust fumes
    • Power Vent has a much longer venting run length capability than conventional or standard direct vent Hot Water Tanks
    • Best energy efficiency
  • Fast Recovery Option
    • uses larger burner capacity to re-heat tank quickly.
      • typically twice the energy use of a standard model

 Water Heater Capacity

Capacity is very important It’s important to select a hot water heater that provides enough hot water for your home. An undersized water heater will work harder and have a shorter lifespan.

Storage Tank

Determine the proper capacity for your household based on the number of bathrooms and bedrooms in your home. If you choose to purchase a unit with a tank, consult the table below for help in determining storage capacity.

Determine Water Heater Capacity
Number of Bathrooms1 – 1.52 – 2.53 – 3.5
Number of Bedrooms1232345345
Minimum Tank Size20304050505060506060

Tankless

This unit heats water directly without the use of a storage tank. To determine the size of the tankless water heater you would need, you must calculate how much hot water you need to use at one time. Routine behaviours, such as running the dishwasher while taking a shower, can exhaust a smaller tankless unit. It is best to understand the demands and expectations you have for your tankless water heater before you purchase.

UNDERSTANDING CAPACITY

The most efficient faucets and shower heads consume 2.5 gallons per minute. Most homes have shower heads that consume 3.5 gallons per minute of water.

Storage Tanks

If two members of your family are showering at the same time you have, at most, 10 minutes of Hot Water available from a 50 gallon tank. Directly after your shower, your Hot Water Tank will reheat and will maintain your tank at your target hot water temperature until you use your hot water again.

On Demand, Tankless Hot Water Tanks

Flow rate – the amount of hot water provides from the unit – will decrease as the temperature of the source water declines. In Canada, our source water ( from the city/town or from your well) will arrive between 40 F and 50F. The target temperature of 118F to 120F requires a Temperature Rise of at least 70F – this will drop the amount of Hot Water Flow to about 50% of the stated maximum capacity of the unit. Be sure to ask your Airplus comfort consultant if a Tankless Water Heater is right for your home.

 

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