Pros And Cons of Tankless Water Heaters

🔍 Tankless Water Heaters for Your Home: Reviews, Costs, and Comparisons

Tankless water heaters are gaining traction for their energy efficiency, compact design, and ability to deliver endless hot water. But choosing the right one—electric vs. gas, brand vs. budget—requires a closer look. Let’s break it down.

🧪 Reviews: What Homeowners Are Saying

Stiebel Eltron Tempra 36 Trend: Praised for its silent operation, 99% efficiency, and ability to handle 4 simultaneous showers Bob Vila.
Rheem RETEX Series: Known for reliability and value, with models like the RETEX-36 offering up to 8 GPM and self-modulating tech Bob Vila.

⚡ Electric Tankless Water Heaters: Pros, Picks & Performance

Electric tankless water heaters are ideal for homeowners seeking energy efficiency, compact design, and lower upfront installation costs. Here's what makes them shine—and where they might fall short.

✅ Pros of Electric Tankless Water Heaters

High Efficiency: Up to 99% energy efficiency—only heats water when needed
Compact Design: Wall-mounted units save space in tight utility areas
No Venting Required: Easier and cheaper to install than gas models
Precise Temperature Control: Especially with brands like Stiebel Eltron
Quiet Operation: No combustion noise or fan hum

❌ Cons to Consider

Limited Flow Rate: May struggle with simultaneous multi-fixture use in large homes
Electrical Requirements: May need upgraded breakers or wiring
Not Ideal for Cold Climates: Incoming water temp affects performance

🔍 Top Electric Models on PlumbersCrib.com

Brand & Model	Flow Rate (GPM)	Power (kW)	Best For	Price
Stiebel Eltron Tempra 36 Plus	~7.5 GPM	36 kW	Large homes	$849.00 plumberscrib.com
Stiebel Eltron Tempra 24 Plus	~5.0 GPM	24 kW	Mid-size homes	$698.00 plumberscrib.com
Stiebel Eltron Mini 2-1	~0.5 GPM	2.4 kW	Point-of-use (sinks)	$159.00 plumberscrib.com
Rheem RTEX-36	~6.0 GPM	36 kW	Whole-house use	$825.00 plumberscrib.com
Rheem RTEX-11	~2.7 GPM	11 kW	Small homes or single fixtures	$279.00 plumberscrib.com

🧠 Quick Recommendations

For whole-house use, go with Stiebel Tempra 36 Plus or Rheem RTEX-36
For bathroom sinks or wet bars, the Mini series from Stiebel is perfect
For budget-conscious installs, Rheem RTEX-11 offers solid performance under $300

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🔥 Natural Gas Tankless Water Heater Comparison

Brand & Model	Flow Rate (GPM)	BTU Range	Notes
Rheem RTGH-84DVLN-3	8.4 GPM	11,000–157,000	Super High-Efficiency Condensing; compact design; Hot-Start Programming™; indoor unit plumberscrib.com
Rheem RTGH-SR11i IKONIC	11.2 GPM	11,000–180,000	Built-in recirculation pump; EcoNet WiFi enabled; stainless steel heat exchangers plumberscrib.com
Takagi T-H3-DV-N	10 GPM	Up to 199,000	Indoor condensing unit; Ultra-Low NOx; ideal for large homes; compact and powerful plumberscrib.com
Takagi TK-510U-I	10 GPM	Up to 199,000	Indoor non-condensing; field convertible gas type; built-in temp controller plumberscrib.com

These models offer a strong mix of performance and efficiency. Rheem’s IKONIC series stands out for smart tech and built-in recirculation, while Takagi’s T-H3-DV-N delivers high BTU output with clean emissions and compact form.

💰 Cost Breakdown

Type	Unit Cost	Installed Cost
Electric	$600–$1,000	$1,400–$3,000
Natural Gas	$1,500–$2,600	$2,100–$5,600

Installation Factors:

Electrical upgrades for electric units
Gas line routing for gas models
Labor costs: $500–$3,000 depending on complexity