Choosing the right water heater size is one of the most important decisions for a homeowner. Water heaters are essential appliances that keep hot water flowing for everything from showers to laundry. When deciding between a 40-gallon and 50-gallon water heater, it’s essential to consider factors like household size, water usage, energy efficiency, and space constraints. In this guide, we’ll explore the differences between these two popular water heater sizes and provide insights to help you make an informed decision.
Understanding 40-Gallon vs. 50-Gallon Water Heaters
When comparing 40-gallon and 50-gallon water heaters, it’s essential to understand how each size typically functions within different household setups.
Typical Uses for Each Size
- 40-Gallon Water Heaters: Generally, a 40-gallon water heater is suitable for smaller households with one to two people. It can often provide sufficient hot water for a couple of quick showers, hand washing, and small loads of laundry. For those who don’t use a lot of hot water regularly, a 40-gallon heater can be a cost-effective choice.
- 50-Gallon Water Heaters: A 50-gallon water heater is better suited for medium-sized households, typically with three to four people. It provides more hot water on demand, so if you have a family or frequently use hot water for multiple tasks (such as simultaneous showers and dishwasher cycles), a 50-gallon heater can meet your needs without interruption. Many families find the extra capacity of a 50-gallon heater particularly valuable.
Benefits of Extra Capacity
Even if a 40-gallon heater currently meets your needs, having an additional 10 gallons in a 50-gallon heater can be beneficial. That extra capacity allows flexibility, so if your family grows or your hot water needs increase, you won’t have to upgrade your water heater immediately. The additional 10 gallons can also come in handy during busy times, like when you have guests or when water use is high, preventing unexpected interruptions in your hot water supply.
Why Smedley Plumbing Recommends 50-Gallon Water Heaters
At Smedley Plumbing, our goal is to provide reliable and efficient solutions that cater to our customers’ needs. For this reason, we recommend 50-gallon water heaters for several reasons:
Availability and Convenience
Our technicians stock 50-gallon water heaters on our service vans because they are more commonly requested and can accommodate a wider range of households. With 50-gallon units readily available, we can quickly install or replace water heaters without additional trips for supplies. Stocking 50-gallon heaters also allows us to offer upgrades to customers who may initially consider a 40-gallon option but could benefit from the larger tank size.
Minimal Cost Difference
The cost difference between a 40-gallon and a 50-gallon water heater is surprisingly small. Often, the price difference is only $5-$10, making the 50-gallon heater a cost-effective upgrade. For that minimal extra expense, you get higher capacity, more flexibility, and a longer-lasting solution that will accommodate your needs as they change over time.
Space Considerations
While we recommend 50-gallon heaters for their benefits, we understand that not every space can accommodate the larger size. Our technicians are trained to assess the space available in your home and, when necessary, install a 40-gallon unit if a 50-gallon heater won’t fit. We ensure that your water heater installation is seamless, efficient, and fits your space constraints.
Tank vs. Tankless: Which One’s Better for Your Home?
Trying to decide between a traditional 50-gallon tank and a tankless water heater? Both have their pros and cons and the right fit depends on how your home uses hot water.
Standard Tank Water Heaters (like 50-gallon units)
These are the most common in Kansas City homes. They preheat a set amount of water and keep it ready to go.
Pros:
Lower upfront cost
Simple to install and replace
Works well for steady, predictable hot water use
Cons:
Can run out during back-to-back showers or simultaneous use
Less energy-efficient since it heats water even when not in use
Tankless Water Heaters
These heat water on demand, no storage tank needed.
Pros:
Endless hot water (great for big families or high use)
Energy-efficient since it only heats water when needed
Takes up less space
Cons:
Higher upfront cost
May need upgrades to your gas line or electrical panel
Can be limited if multiple fixtures run at once without proper sizing
At Smedley Plumbing, we install both types and help homeowners pick what works best for their needs, budget, and long-term goals. No pressure, just real advice from licensed plumbers with over 10,000 hours of experience each.
How Each Heater Size Performs in Different Conditions
The way a water heater performs isn’t just about size; it’s also about how efficiently it heats and how it handles different conditions, like cold weather.
Staying Warm in Winter
A larger water heater, like a 50-gallon tank, often provides a more consistent hot water supply during colder months. When incoming water is chilly, the heater has to work harder to warm it up. A 50-gallon heater with a bigger reserve can handle these demands a bit better, reducing the chances of running out of hot water.
Energy Efficiency Myths
Some people assume a 50-gallon water heater will drive up their energy bills, but modern water heaters are pretty efficient. Whether you choose 40 or 50 gallons, today’s units are designed to use energy wisely. The operating costs are usually close, so you’re not paying a premium for going a bit bigger. Both sizes use technology to cut down on heat loss and keep your bills manageable.
Deciding on the Right Size for Your Home
Now that you know the basics, here are a few things to keep in mind as you make your decision.
Household Size and Hot Water Use
Think about how much hot water your household typically needs. If you live alone or with one other person, a 40-gallon heater might be plenty. But if you have a larger family or need more hot water for back-to-back showers, dishes, and laundry, a 50-gallon heater can make life a lot easier.
Planning for Future Needs
It’s worth thinking about how your hot water needs might change in the future. Are you planning on growing your family? Hosting more guests? Adding appliances that use hot water, like a dishwasher or washing machine? A 50-gallon heater gives you more flexibility for these potential changes, so you won’t need to upgrade anytime soon.
Checking Available Space
While a 50-gallon heater can usually fit in standard water heater spots, some homes may have limited space. Our team can help you check your space and decide which size works best. If a 50-gallon heater won’t fit, we’ll set you up with a 40-gallon model that’s just right.
What to Expect During Installation with Smedley Plumbing
Choosing the right water heater is just the first step. Proper installation makes a big difference in how well it performs and how long it lasts. Here’s what you can expect from our installation process.
Our Installation Approach
We follow best practices for water heater installation, from inspecting your plumbing setup to making sure your new water heater fits and functions correctly. Our goal is to make installation as seamless as possible so that you get reliable hot water from day one.
Commitment to Customer Satisfaction
At Smedley Plumbing, customer satisfaction is our top priority. We’re here to answer questions, address concerns, and provide expert advice on which water heater will suit your household best. We believe in giving you a solution that fits your unique needs, not a one-size-fits-all approach.
Conclusion: Is a 50-Gallon Water Heater Worth It?
In the end, choosing between a 40-gallon and 50-gallon water heater depends on your home’s needs. A 50-gallon heater costs only slightly more provides extra hot water and is often the better choice for families or anyone who uses a lot of hot water. The small extra investment upfront can make a big difference in comfort and convenience.
If you’re still unsure, we’re here to help. Smedley Plumbing can assess your setup and help you choose the water heater size that’s right for you. With a professional installation, you’ll have reliable hot water when you need it, without the guesswork.
Let’s Find the Right Water Heater for Your Home
Give us a call or book online, it’s quick, easy, and you’ll talk to someone who knows their stuff. We’ll ask a few questions about your home, your hot water use, and walk you through your options.
No pressure. No confusing terms. Just real answers and a water heater that fits your household, not someone else’s.
📞 Call Smedley Plumbing at (816) 763-3539
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Frequently Asked Questions
A 40-gallon hot water heater may be enough for a family of four, but it really depends on how much hot water they use. If they are careful with their water use, a 40-gallon heater could work. But for those who use more hot water, it’s better to choose a 50-gallon heater.
The price you pay for a gallon water heater can change based on the brand, model, and features. Usually, a homeowner should expect to spend a few hundred dollars extra for a 50-gallon heater compared to a similar 40-gallon one. Don’t forget to consider the installation costs, as they can also vary.
Not really. A 50-gallon water heater might use a bit more energy, but modern models are pretty efficient. That means the difference in your bill may be barely noticeable, even with the extra capacity.
Typically, both 40- and 50-gallon water heaters last around 10 to 15 years. Taking good care of your heater, like flushing it annually and checking the anode rod, can help it last as long as possible, no matter the size.
A 50-gallon heater is usually a bit taller or wider, so you’ll need to make sure there’s enough room. Check the heater’s exact dimensions against your space to see if it’ll fit without any issues.
It’s often a smart move if you find you’re running out of hot water. For just a little extra cost, a 50-gallon heater can make a big difference, giving you more hot water when you need it most.
It’s often a smart move if you find you’re running out of hot water. For just a little extra cost, a 50-gallon heater can make a big difference, giving you more hot water when you need it most.
A 40-gallon heater typically gives you about 30-40 gallons of hot water before it starts to cool down, while a 50-gallon model can give you closer to 40-50 gallons. That extra 10 gallons can make a real difference, especially in bigger households.
It’s usually pretty straightforward. The installer will check if there’s enough space and that your connections are compatible. If everything lines up, it’s a smooth upgrade to a bigger, more convenient tank.
There are several types of water heaters to choose from, including traditional tank heaters, tankless models, heat pump water heaters, and solar options. These water heaters come in different sizes to fit various household needs, from compact units for smaller spaces to larger tanks for big families. Additionally, warranty options can differ by type and brand, generally ranging from 6 to 12 years, with some manufacturers offering extended warranties for extra peace of mind.
If you have 3 to 5 people in your household and average hot water usage, a 50-gallon tank is usually enough. We’ll look at your daily habits to make sure they fit your needs.
First hour rating, flow rate, and incoming cold water temperature all matter. These affect how quickly your system delivers hot water. We’ll break it down and help you pick the right fit.
