Bock Gas Water Heater
Review and Buying Tips

Bock gas water heater expert review and buying tips. Top features and benefits. See how Bock water heaters are designed with an increased recovery rate, clean combustion, and higher efficiency.

Bock manufacturer makes a variety of water heaters and storage tanks that are used for different heating applications, such as residential and commercial hot water production. Bock also offers different types of water heaters and sizes, which are using the following fuel sources: oil, natural and propane gas, electric, solar and geothermal.

Gas fired water heaters

Gas powered Bock water heater is ideal for home use where the high volume of hot water is required. There are several models and sizes available for residential use; from 32 to 113-gallon capacities and from 104,000 to 173,000 Btu per hour gas input. All these models are using a fan-assisted burner, which draws the air into the combustion chamber, therefore, increasing the recovery rate.

Bock gas water heater is factory built to use natural gas as the primary fuel source, but it can be transformed to use propane gas also.


One of the most important features found in Bock gas water heater is the Turboflue. The Turboflue was invented in 1960, by the company founder, Oscar Bock.

Turboflue is a unique and one of the most advanced heat exchangers in the water heating industry. It is designed as the multi-finned flue, made of heavy, 12-gauge steel, and built with hundreds of fins. Such a design heats the water faster and more efficiently while reducing the heat loss through the flue. This patented feature also reduces the operating costs by using less energy.

C-Glass is the Bock's exclusive porcelain coating, a durable enamel lining applied to the inner tank's surface and outside surface of Turboflue, for protection against the hard or aggressive water condition.

Bock water heater is built to last. Its body is made of the heavy gauge steel, and with the dual magnesium anode rods, the steel tank is protected from corrosion, which extends the tank's life.

The fan-assisted gas burner is installed externally, which makes the gas combustion more efficient, cleaner and with the increased recovery rate. Also, the external mount allows for easy installation and maintenance.

Hand-cast refractory lined combustion chamber provides better heat retention and combustion, it allows warmer starts, and it reduces gas emissions.

Safety and control elements consist of the factory installed TP valve, direct spark ignition with the flame rod to provide 100% safety shut-off and dual aquastats for accurate temperature control.

Every gas powered Bock water heater that is used for residential water heating comes with the 5-year limited warranty. The price is within the range from $2,000 to $10,000.


Bock manufactures two types of gas water heaters for residential and commercial use: with the single and multi-flue tanks.

Center flue design is the most used design in residential gas heaters. The advantages are the simpler design which allows easy cleaning and maintenance, and it reduces tank flex for longer life.

Multiflue tank, when compared to the single flue design has more than double the gas input. Such a design allows Bock to manufacture smaller gas water heaters that have a larger BTU input and higher recovery.


Bock gas water heaters are custom made so it can meet any commercial or residential requirement for hot water. Every unit is known for its efficient feature Turboflue and high-quality porcelain enamel lining C-glass. Also, excellent quality in the craftsmanship construction, durability in operation with the increased efficiency and performance ensures that Bock heaters are among the top trusted names in the water heating industry.

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