If you’ve ever run out of hot water mid-shower, you’re not alone.
Traditional water heaters store a limited supply of hot water. Once it’s gone, you’re stuck waiting for the tank to refill and reheat.
That’s where tankless water heaters come in. Also known as on-demand water heaters, these systems heat water as you need it—no storage tank is required.
For many homeowners, switching to a tankless water heater sounds like an obvious upgrade: endless hot water, lower energy bills, and more space in your utility closet. But as with any home improvement decision, it’s important to weigh both the benefits and potential drawbacks.
Our team at Gillette Services – Plumbing, Heating & Air breaks down the pros and cons of installing a tankless water heater to help you decide if it’s the right move for your home.
The Pros of Going Tankless
Tankless water heater sales are growing more popular each year, and it’s easy to see why. Our team at Gillette Services – Plumbing, Heating & Air will gladly provide a free consultation on their advantages and how going tankless can benefit your home:
Endless Hot Water
One of the biggest perks of a tankless water heater is that it provides hot water on demand. Unlike traditional tank models, which heat a finite amount of water (usually 40–60 gallons), a tankless system heats water only when you need it and continues to do so as long as your tap is open.
That means no more scheduling showers or staggering laundry loads—you get a steady stream of hot water whenever and wherever you want it.
Space-Saving Design
Tankless water heaters are compact—no storage tank is necessary! While a conventional tank model may take up several square feet of floor space, a tankless unit typically mounts on the wall and is about the size of a carry-on suitcase. This makes it an ideal choice for smaller homes, condos, or properties where maximizing storage space is a priority.
Lower Energy Costs Over Time
Because they only heat water when needed, tankless water heaters avoid the standby energy losses associated with keeping a large tank of water hot 24/7. According to the U.S. Department of Energy, tankless systems can be 24% to 34% more energy-efficient than traditional water heaters in homes that use 41 gallons or less of hot water per day.
Over time, those energy savings can add up—especially in smaller households.
Longer Lifespan
Tankless water heaters tend to last longer than traditional models. While a tank water heater typically lasts 8 to 12 years, tankless units can often operate for 15 to 20 years with proper maintenance. This means fewer replacements over the life of your home, which can translate into long-term savings.
Environmentally Friendly
Tankless water heaters help reduce your carbon footprint by using less energy. Additionally, many models are eligible for federal tax credits and rebates, especially if they meet ENERGY STAR® standards.
That makes going tankless not just a smart choice for your utility bill but also a greener one.
The Cons of Tankless Water Heaters
A tankless system works for nearly all households. However, there are some challenges to consider:
1. Higher Upfront Cost
One of the biggest barriers for homeowners considering a tankless water heater is the initial cost. A tankless unit can be significantly more expensive than a standard tank model—often running $1,000 to $2,500 or more, depending on the size and complexity of installation.
This doesn’t include the potential cost of retrofitting your plumbing or upgrading your gas line or electrical system to support the new unit.
2. Limited Flow Rate
While tankless water heaters provide continuous hot water, they can only produce a certain amount at one time. If you’re running multiple appliances—say, taking a shower while the dishwasher and washing machine are on—some models may struggle to keep up. This is especially true in larger households with high simultaneous hot water demand.
Our solution: Install a supplemental point-of-use tankless water heater for your kitchen, bathroom, or laundry room.
3. Installation Can Be Complicated
Installing a tankless water heater isn’t always a simple swap. Depending on your home’s layout and utility access, you may need to upgrade your gas line, increase your electrical service, or install new ventilation. These modifications can add both cost and complexity to your installation, especially in older homes.
4. Delayed Hot Water Delivery
Some users report a slight delay between turning on the hot water tap and receiving hot water. This is because the tankless unit only starts heating when water begins to flow. While this delay is usually short, it can be noticeable compared to the near-instant hot water delivery from a preheated tank.
5. Requires Routine Maintenance
To maintain performance and prevent issues like mineral buildup (especially in areas with hard water), tankless water heaters require periodic maintenance—typically annual descaling or flushing. Neglecting this maintenance can reduce efficiency or even damage the unit over time.
Is a Tankless Water Heater Right for You?
The decision to install a tankless water heater depends on your household needs, your budget, and your long-term priorities. If you’re looking to free up space, reduce your energy bills, and never worry about running out of hot water again, a tankless system could be a worthwhile investment.
However, it’s important to consider the higher upfront cost and assess whether your home’s infrastructure is ready for the upgrade. In homes with large families or high hot water demand, it might even be worth considering multiple tankless units or a hybrid system.
Make the Smart Choice Today!
Tankless water heaters offer many advantages that align with our customers, including efficiency, convenience, and sustainability. They’re a smart upgrade for many households.
Take the time to research your options, consult with a licensed plumber, and consider how your family uses hot water daily. A little planning can help ensure you choose the right solution for lasting comfort and performance. For a free consultation, reach out to Gillette Services – Plumbing, Heating & Air at (801) 465-7760 or request service online today.
