TANKLESS WATER HEATERS
Because who doesn’t want endless hot showers without playing “beat the clock”?
get estimateTankless Water Heaters
A tankless water heater gives you hot water on demand—no waiting for a bulky tank to refill, no running out mid-shampoo, and no heating 40+ gallons of water all day “just in case.” It’s energy-efficient, space-saving, and basically the VIP upgrade for your home’s comfort. Endless hot water, lower energy bills, and more room in your utility closet? Yes, please.
Choosing the Right Tankless Water Heater for Your Home
If you’re considering a tankless water heater for your home, it’s important to choose a system that delivers the right balance of efficiency, performance, and long-term value. Tankless systems heat water only when you need it, helping reduce energy use and avoid the standby heat loss common with traditional tanks. When properly sized for your home, they can provide continuous hot water for daily use while using less energy over time. Although the upfront installation cost can be higher, their improved efficiency and longer lifespan can make them a smart long-term investment for many households.
Find Out MoreFEATURED NAVIEN TANKLESS WATER HEATERS
The Navien NPE-150S2 is a high-efficiency condensing tankless water heater that delivers continuous hot water on demand with a modulating gas input of 18,000–120,000 BTU/h. It uses dual stainless-steel heat exchangers and advanced controls for durability while also being ENERGY STAR® certified for efficiency and low NOx emissions. Designed for modest amounts of hot water usage for smaller families.
The Navien NPE-240S2 is a high-efficiency ultra-condensing gas tankless water heater that provides continuous hot water on demand with a 199,000 BTU input while achieving a very high Uniform Energy Factor (UEF) of around 0.96. It features dual stainless steel heat exchangers, low NOx emissions and ENERGY STAR® certification. Designed for indoor wall-mounted installation and moderate amounts of hot water for larger households.
The Navien NPE-240A2 is a high-efficiency ultra-condensing gas tankless water heater that provides continuous hot water on demand with a 199,000 BTU input and built in hot water recirculation. With a high Uniform Energy Factor (UEF) of around 0.96. It features dual stainless steel heat exchangers, low NOx emissions and ENERGY STAR® certification. Designed for indoor wall-mounted installation and moderate amounts of hot water for larger households with included hot water recirculation.
What People Are Saying ...
Common Tankless Water Heater Questions
Have questions about tankless water heaters? Here are clear answers to some of the most common things homeowners ask when considering an upgrade with Arpi's.
Is a tankless water heater the best way to heat my home’s hot water?
Tankless is best if:
- You want endless hot water
- You plan to stay in your home long-term (they last ~20+ years)
- You want better energy efficiency
- Space is tight
A Traditional Tank may be better if:
- You want the lowest upfront cost
- Your current setup would require expensive upgrades (gas line, venting, electrical)
- You’re replacing a tank and want a simple swap
Does a tankless water heater save you money?
Yes — especially over time.
Tankless heaters only heat water when you need it, avoiding the standby heat loss that traditional tanks have. This can make them 24–34% more energy efficient for many homes.
Why homeowners save:
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Lower energy use from on-demand heating
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$200–$400 yearly savings for many households
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Longer lifespan (often 20+ years)
Upfront costs are higher, but the efficiency and longevity can offset the investment over time.
Will a tankless water heater ever run out of hot water?
Not in the traditional sense.
Tankless heaters don’t store hot water, so they won’t run out like a tank mid-shower. Instead, they heat water on demand, providing continuous hot water when used within their capacity.
Things that can affect performance:
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Flow rate limits – too many fixtures at once
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Cold incoming water in winter climates
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Improper sizing for the home
A properly sized system should provide continuous hot water for normal household use.
What is hot water recirculation?
A recirculation system helps deliver hot water almost instantly from a tankless heater.
Normally, when you turn on a faucet, cold water sitting in the pipes must clear first, which causes wait time and water waste.
Recirculation systems solve this by:
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Using a small pump to move hot water through pipes
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Keeping hot water closer to fixtures
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Reducing wait time at taps
Some homes use a dedicated return line, while retrofit systems use a valve under the farthest sink.
