Water HeaterShould You Go Tankless?

We take on the pros and cons of tankless water heaters.

If you’re contemplating making the shift to a tankless water heater, you should carefully consider the pros and cons first.


A tankless propane water heater has a number of advantages over an electric tank water heater.  They include:

  • Say Bye-Bye to Cold Showers — If you have a large family or teenagers in the home, a cold shower in the morning is nothing new to you. A gas tankless water heater is the answer to that icy alarm clock. Since the water is heated as you need it and not all at once, there’s no running out of hot water.  A 50-gallon hot water heater set to 120 degrees takes about 1 hour and 20 minutes to heat water coming in if the water temperature begins at 60 degrees.
  • Say Hello to More Hot Water — Propane tankless water heaters let you run more appliances at the same time.  You could give your child a bath while the washing machine and dishwasher are running simultaneously.  In addition to that, a tankless unit will let you completely fill and enjoy your Garden or Jacuzzi tub.
  • Longevity — The life expectancy of a tankless unit can last more than 20 years, which is about twice the lifespan of storage water heaters. Tank units normally have a 6-year warranty and will only last 8 to 10 years.
  • No Waste — Many gas tankless water heaters are made of solely of recycled materials where as most tank water heaters must be taken to a designated recycling center.
  • Saves You Money — We all want to save money, so an advantage to going tankless is by only heating the water when you need it, you save money. Tank water heaters waste energy and money by heating water you aren’t using. This can cut your costs and give you a savings of up to 30% per year.
  • Small and Compact — Tankless units can be put virtually anywhere in the house. They can be hung on the wall, either inside or outside of your home depending on your climate. This is a huge benefit for those that are short on living space.
  • A Cleaner Experience — Conventional water heaters can build up limescale and rust inside the tank overtime. With a tankless system there is no buildup because the water is stored therefore it gives you fresher, cleaner water.


  • Cost of Unit is High — The tankless water heater can cost anywhere between $800 and $1,600, compared to $300 to $500 for a standard tank water heater.
  • Additional Installation Costs – There are also costs that accompany installation. Required piping along with a good ventilation setup can get expensive.
  • Need a Water Softener – If you live in an area where there is hard water, then you will need to purchase a water softener and have it installed so you don’t ruin your new tankless water heater.
  • More Complicated – Another drawback with the tankless unit is the complex installation along with the added materials and a skilled installer which when added together, can become pricey.

If it’s time to buy a new water heater and you want to know if purchasing a tankless unit over replacing your standard tank water heater will save you money down the road, then compare the Energy Guide information on your current tank unit and the tankless model that best fits what you need. This will give you a pretty good idea of what to expect.

Looking to replace your old water heater with a new tankless water heater? Contact the experts at MM Comfort throughout the Seattle area to help with your Heating and Cooling needs.

MM Comfort Systems experts can help you with repairs, servicing and purchasing of a new hot water heating system or your current hot water heater. Our staff will answer your questions and help you choose the best heating and cooling options for your home, no matter how big or small it may be. Call us at 425.533.9058, or use our online contact form to arrange for a free heating and cooling consultation.


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