Propane Gas Tankless Water Heater with Vent Pipe - 4.3 GPM Instant Hot

Our review finds this Propane Gas Tankless Water Heater with Vent Pipe best suited for households that need steady on-demand hot water for a couple of fixtures and value energy savings. In this review the standout feature is the 100,000 BTU heating capacity paired with up to 4.3 GPM, which provides continuous hot water for 2-3 supply points without the wait time of a tank heater. The included vent pipe and copper water tank also help reduce installation extras and heat loss, making it a practical choice for kitchens, bathrooms, and small laundry setups.

Key Features

• 100,000 BTU heating: Delivers strong heat output so the unit can sustain multiple fixtures running simultaneously without big temperature drops.
• 4.3 gallons per minute: Provides continuous hot water flow suitable for a bathroom and kitchen or two bathrooms in typical household use.
• Four Seasons Function: Automatically adjusts output temperature to compensate for seasonal inlet water changes for more consistent hot water year-round.
• Kitchen and Bathtub Functions: Offers a default 100F kitchen setting and a bathtub volume reminder for convenient, preset hot water use.
• Included vent pipe: The kit contains the exhaust pipe so buyers do not need to purchase an outlet separately, lowering initial cost and simplifying setup.
• Oxygen-free copper tank: Reduces heat loss and improves energy efficiency compared with lower-grade materials.

Who It's For

This unit is a good fit for homeowners or renters with up to 2-3 hot water outlets who want on-demand hot water and reduced standby energy loss compared with tank systems. It works well for a small family kitchen plus a bathroom, or a house with a shower and a utility sink, and for users who appreciate preset modes like a 100F kitchen setting.

Those who need high-altitude performance above 2,000 ft should look elsewhere, and properties requiring very high simultaneous flow for multiple full bathrooms or large tubs may require a higher GPM model or multiple units.

Pros & Cons

Pros

• Strong heating capacity and consistent hot water delivery for 2-3 fixtures in typical households.
• Useful preset modes such as the Kitchen Function and seasonal temperature adjustment reduce fiddling with controls.
• Includes exhaust pipe and uses an oxygen-free copper water tank to reduce heat loss and lower energy consumption.
• Eliminates tank standby wait time so hot water is available immediately on demand.

Cons

• Not recommended for use above 2,000 ft, limiting suitability in higher-altitude locations.
• 4.3 GPM may be insufficient for large households that run multiple showers and appliances simultaneously.

Specifications

Heating capacity	100,000 BTU
Maximum flow rate	4.3 GPM
Included accessories	Vent/exhaust pipe
Water tank material	Oxygen-free copper
Water and gas fittings	Standard 1/2' NPT
Recommended installation	Licensed professional; follow local codes

Our Verdict

The Propane Gas Tankless Water Heater with Vent Pipe is a practical, cost-conscious choice for small to medium households that want reliable instant hot water and modest energy savings. With strong BTU output, included venting, and useful preset functions, it represents good value when installed correctly by a professional and used within its recommended altitude and flow limits.

Frequently Asked Questions

Can this unit supply more than one fixture?
Yes, it is designed to provide continuous hot water for about 2-3 water supply points depending on simultaneous demand.

Is the exhaust pipe included?
Yes, the kit includes the exhaust/vent pipe so you do not need to buy it separately.

Can it be installed at high altitude?
It is not recommended for areas above 2,000 ft; consult local codes and a licensed installer for alternatives.