Choosing the Best Water Heater for Your Houston Area Home
Tank or tankless — here's a straight answer to the most common questions homeowners ask before choosing, backed by our team's hands-on installation and repair experience.


When choosing the best water heater type and price for your home, you can trust the expertise of Top Notch Plumbing. We handle replacements, upgrades, and repairs — call us at (832) 466-6262 and we'll take care of the rest.
Below, we've answered the questions homeowners ask us most before deciding between a tank and tankless system, so you can schedule the right installation the first time. No more cold showers.
Tankless Water Heaters
What is a tankless water heater, and how does it work?
A tankless (or on-demand) water heater heats water only when you need it, rather than storing a large volume in a tank. When you turn on a hot water tap, cold water flows into the unit and is quickly heated by a gas burner or electric element — giving you a continuous hot water supply without a storage tank.
Are tankless water heaters energy-efficient?
Yes. Because they heat water only on demand, tankless units are typically more efficient than traditional tank water heaters, especially in lower-usage households. Actual savings vary by household size and usage, so ask us for numbers specific to your situation.
Do tankless water heaters run out of hot water?
No — they provide a continuous hot water supply as long as demand doesn't exceed the unit's capacity rating. If multiple high-demand appliances run at once, you may see a temperature dip, but you won't run out the way you can with a tank.
How much does it cost to install a tankless water heater?
Total installation cost varies based on your home's existing setup, venting, and gas or electrical capacity. While the upfront cost is typically higher than a tank system, it's often offset by long-term energy savings. See our Tankless Water Heater Installation page for what's involved, or call us for a price specific to your home.
Are there special installation requirements for a tankless water heater?
Like tank systems, tankless units require proper venting, a dedicated gas line or sufficient electrical capacity, and a location that prevents freezing. Installation by a professional, licensed plumber is strongly recommended to ensure safety and optimal performance.
Tank Water Heaters
What is a tank water heater, and how does it work?
A tank water heater is a large insulated tank holding a reserve of hot water, typically 20 to 80 gallons. A gas or electric heating element keeps that water at a set temperature. When you turn on a hot water faucet, hot water is drawn from the top of the tank and replaced with cold water at the bottom.
Are tank water heaters energy-efficient?
They have room for improvement compared to tankless systems, especially older models. Regular maintenance — flushing the tank, checking the thermostat — can improve performance and lower energy bills over time.
Do tank water heaters run out of hot water?
Yes — once the stored volume is used up, you'll wait for more to heat. If you're running out frequently, it may mean your tank is undersized, or that the unit itself needs attention. If it's underperforming rather than simply too small, see our Water Heater Repair page before assuming you need a full replacement.
How much does it cost to replace a tank water heater?
Cost depends on the tank's capacity and whether it's gas or electric-powered. Always get a clear price before work begins — see our Water Heater Replacement page for what's included, or call us for a quote specific to your home.
Are there any special installation requirements for a tank water heater?
Gas models require proper venting to remove hazardous gases, while electric models need the right power supply. Depending on your home's setup, additional modifications may be needed — our Water Heater Installation team can walk you through what your home specifically needs.
Check out our Top Notch Plumbing Specials & Coupons page for discounts on water heaters.
Free Consultation on Choosing Your Water Heater
Top Notch Plumbing offers a free consultation to help you choose the best water heater type and price for your home.
