Bosch 330 PN Tankless Water Heater 3.3 GPM

The Bosch 330 PN is another reliable appliance created to provide endless amounts of hot water on demand. The unit is gas fired and comes without a tank, giving users utmost efficiency and convenience after installation. The modulating gas valve helps the appliance be more efficient and only work when the hot water is turned on. The Bosch 330 PN has a maximum gas input of 74,900 BTU, whereas its maximum output is 60,000 BTU. TopTenWater.com has conducted extensive research on this unit to assess what its strengths and weaknesses are. At the end of this page, you’ll have a clear idea of whether or not this unit is a good fit for you.

Description

The Bosch 330 PN is another reliable appliance created to provide endless amounts of hot water on demand. The unit is gas fired and comes without a tank, giving users utmost efficiency and convenience after installation. The modulating gas valve helps the appliance be more efficient and only work when the hot water is turned on. The Bosch 330 PN has a maximum gas input of 74,900 BTU, whereas its maximum output is 60,000 BTU. TopTenWater.com has conducted extensive research on this unit to assess what its strengths and weaknesses are. At the end of this page, you’ll have a clear idea of whether or not this unit is a good fit for you.

With a thermal efficiency of 77%, this tankless water heater promises to deliver hot water for a range of applications. While its use seems to be mostly for residential purposes, it can also be used for smaller commercial applications. This Bosch water heater can provide a flow rate of 3.3 Gallons Per Minute at a temperature rise of 35F degrees. Going further, you can expect 2.6 GPM at a 45F degree rise, and 2.2 GPM at a 55F degree rise. Bosch is known to provide lasting and reliable appliances and users can expect the same from this unit. In the research we conducted, it seemed that owners of this appliance were located on various continents.

That’s most likely because it’s an efficient and effective unit. It’s innovative Piezo ignition system does not require an electrical connection, allowing users to fire it up whenever they want. It is an ideal appliance for locations that are prone to power outages. The vent on this unit is designed to burn exhaust gases and typically needs a certain length of pipe, or else the safety mechanism can turn the unit off. In addition, the Bosch 330 PN gas water heater is intended to be mounted on a wall instead of more discrete locations such as under the sink or an attic. This is obviously because the appliance needs to vent and if that is not carried out properly, users face the risk of an inoperable device.

  • This tankless water heater cannot be power-vented and instead should be vented straight through the roof with a B-Vent anywhere from 4 to 6 inches long
  • This unit does not require you to light it up with a lighter thanks to its built-in ignition button
  • The pilot light simply needs to be turned on and then the unit fires up on its own
  • The required incoming water pressure should fall between 15 PSI and 25 PSI.
GOODBAD
Compact form for easy installationCannot be installed under sink
Natural gas-poweredNo Wi-Fi capability
Priced competitivelyLimited Availability
Piezo ignition systemNot designed for sub-zero usage

Features

  • Non-condensing whole house unit designed for indoor use
  • Maximum capacity of 3.3 Gallons Per Minute
  • Comes with a 15-year warranty
  • Can be used at locations with altitude as high as 4,500 ft
  • General product life expectancy is up to 20 years
Energy Factor0.77
Power Source0.5 GPM
Maximum Output60,000 BTU/hr
Maximum Input74,900 BTU/hr
Gas Connection Size½” NPT
Minimum recommended water pressure9.4 GPM
Width12.20”
Depth8.66”
Height22.83”
Weight16 lbs.
Vent Diameter4”

TopTenWater.com takes the reviews consumers leave on a product seriously. We’re aware that manufacturers typically only have great things to say about their products, however, what users have to say about them is where the rubber hits the road for us. Since this product’s availability was limited, we weren’t able to find as many reviews as we did for other more popular units. However, we went through what users commented on Amazon. The general picture seemed positive for the Bosch 330 PN tankless water heater. Most users replaced their older units with this one and had good things to say about it.

Paul said that he’d been using the unit for 8 years and was satisfied with the way the appliance worked. Another user bought this appliance to replace their old Aquastar. They had a family of 3 and said that the Bosch was more than adequate for their hot water needs. Other users had more unique applications for the tankless water heater, such as using it in the mountains to take a shower. This consumer recommended the unit for off-grid use as it was easy to install and performed well beyond their needs. Another user suggested using a propane tank for this heater as it seemed to last longer and saved them more money on energy consumption.

Only a handful of reviews were negative on this product. One person warned others from buying the Bosch 330 PN tankless water heater. He said the unit only lit up when it wanted to and whenever it did, the output was only lukewarm water, not hot water as advertised. They even had the ignition turn off during a shower and had cold water come out. Another user wasn’t happy with the lack of information on Bosch’s website. They were trying to find details on how to vent it but couldn’t find much help online. A different user said the water temperature varied too much with this unit.

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