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Gas Tankless Water Heaters in Cold Climates: Sizing, GPM & Winter Performance

Gas Tankless Water Heaters in Cold Climates: Sizing, GPM & Winter Performance

BySavvy Mavi
OnOctober 6, 2026

How Much Does a Gas Tankless Water Heater Cost to Run?

How Much Does a Gas Tankless Water Heater Cost to Run?

BySavvy Mavi
OnOctober 6, 2026

How Much Does It Cost to Install a Gas Tankless Water Heater in 2026?

How Much Does It Cost to Install a Gas Tankless Water Heater in 2026?

BySavvy Mavi
OnOctober 6, 2026

Natural Gas vs Propane Tankless Water Heaters: Cost, Efficiency & Performance Compared

Natural Gas vs Propane Tankless Water Heaters: Cost, Efficiency & Performance Compared

BySavvy Mavi
OnOctober 6, 2026

Condensing vs Non-Condensing Tankless Water Heaters: Which Is Better?

How a Non-Condensing Tankless Water Heater Works A non-condensing gas tankless water heater follows a relatively straightforward process. When a hot-water fixture opens, water begins flowing through the appliance, a flow sensor detects demand, the burner fires and a heat exchanger transfers combustion heat into the moving water. Once the requested hot-water flow stops, the burner shuts down. The important distinction is that the appliance does not intentionally recover as much residual heat from the exhaust as a condensing system does. Combustion gases therefore leave the heater at a higher temperature, and the vent system has to be designed for those hotter exhaust conditions. This can make non-condensing equipment mechanically simpler. Current manufacturer comparisons commonly show non-condensing models with lower initial equipment cost and somewhat smaller dimensions than comparable condensing units. Navien, for example, currently describes its non-condensing equipment as generally less expensive initially, while its comparison material lists non-condensing efficiency above 0.80 UEF and condensing efficiency as high as approximately 0.96 UEF within its product families. Navien The tradeoff is that heat leaving through the exhaust represents energy that was purchased but was not transferred into the household's water. That is the fundamental reason condensing technology can achieve higher efficiency.

BySavvy Mavi
OnOctober 6, 2026

Gas Tankless Water Heater Venting Guide: Indoor, Outdoor & Condensing Systems

Gas Tankless Water Heater Venting Guide: Indoor, Outdoor & Condensing Systems

BySavvy Mavi
OnOctober 6, 2026

Tankless Water Heater Gas Line Sizing: What Size Gas Pipe Do You Need?

Tankless Water Heater Gas Line Sizing: What Size Gas Pipe Do You Need

BySavvy Mavi
OnOctober 6, 2026

How Many BTUs Does a Gas Tankless Water Heater Need?

How Many BTUs Does a Gas Tankless Water Heater Need

BySavvy Mavi
OnOctober 5, 2026

Gas Tankless Water Heater Sizing Guide: GPM, BTU & Temperature Rise Explained

Gas Tankless Water Heater Sizing Guide: GPM, BTU & Temperature Rise Explained

BySavvy Mavi
OnOctober 5, 2026

Best Gas Tankless Water Heaters of 2026: Natural Gas & Propane Models Compared

Best Gas Tankless Water Heaters of 2026 Natural Gas & Propane Models Compared

BySavvy Mavi
OnOctober 5, 2026

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