Low Stock on Bosch GWH425EF LP (Liquid Propane) Gas Tankless Water Heater

GlobalTowne is almost out of stock on the Bosch GWH425EF LP (Liquid Propane) Gas Tankless Water Heater.  The Bosch 425EF LP is a direct vent tankless water heater designed for 1 major application at a time up to 3.6 GPM.  The Bosch 425EF LP requires power and has electronic ignition and a built in fan for blowing the exhaust gases to the outside. This 425 should be vented horizontal to the outside using 4" diameter single wall stainless steel venting.  This Bosch model 425EF LP is also the direct replacement for the older Bosch 125FX LP.  Supply is limited so order soon.

Please call GlobalTowne at 888-726-9752 for further questions or to place an order.

4" Z-Flex Stainless Steel Venting for Pool Heaters

Globaltowne carries a large supply of the 4" Z-Flex Stainless Steel (AL29-4C) venting and pool heater adapters.

The 4" stainless steel venting comes in all different lengths ranging from 6" - 5' long.  We carry all of the elbows, wall thimbles and terminators also.

Globaltowne carries all kinds of adapters for any type of pool heater and many different tankless water heaters.  The 4" Sta-Rite/Pentair Pool Heater Adaptor (4STPHA04) is the most common for the pool heaters and we always keep plenty on hand.

Bosch Therm 330PN Replacing the Bosch Aquastar 38B

The Bosch Therm 330PN gas tankless water heater is a point-of-use water heater designed to provide instant hot water for two sinks. It can, in some locals be used to provide hot water for a single low flow shower.  

The Bosch 330PN is 75,000 BTU's and can deliver 2.6 GPM of hot water at a 45 degree F temperature rise. A regular shower head delivers about 2.0 - 2.5 GPM, so the Bosch 330PN is right on the edge for delivering water for a hot shower.

However, if you live in a warm climate, such as Texas, Southern California, Florida, Arizona, etc, then you probably do not need to raise the water temperature by 45 degrees, so the 330PN can work for a single shower.

Also, if you use a low-flow shower head that reduces your flow to say 1.5 GMP, then again you can have a hot shower with the Bosch 330PN.

We would not recommend the Bosch Therm 330PN for a regular flow shower head in New York -- it just will not be able to keep up and provide you with a hot shower due to the cold incoming water.  The Bosch Therm 330PN is not designed or approved for preheated inlet water..
The Bosch 330PN is a good replacement for the older Bosch Aquastar 38B. The 38B was 40,000 BTU's and only delivered about 1.3 GPM at the same 45 degree F temperature rise. So, the 330PN really is a much stronger water heater than the 38B ever was!

The Bosch Therm 330PN takes the same 4" venting as the 38B did and must be vented vertical up through the roof.  The 330PN CANNOT be powervented out the sidewall of the building.

The Bosch 330PN comes in both Natural Gas (NG) and Liquid Propane (LPG) models.

The Bosch 330PN is designed for heating potable water only and is not approved for space heating applications.

Bosch Therm 330PN is the Direct Replacement for Bosch 1000P

The new Bosch Therm 330PN is the direct replacement for the retail model Bosch 1000P.  Bosch is no longer making the retail model heaters and is only selling wholesale versions.  The Bosch 330PN comes in either Natural Gas (NG) or Liquid Propane (LP).  The only difference between the 330PN and the retail model 1000P is the color of the front cover.  The 330PN has a silver cover as the older 1000P had a white cover.  All of the other specifications are the same.

Specifications for Bosch Therm 330PN:

• Piezo ignition system requires no electrical connection
• 78%+ thermal efficiency
• 75,000 BTU maximum input
• 3.3 gallons per minute capacity at 35F degree rise
• Endless hot water for 1 application at a time
• Minimum activation flow rate of 0.5 gallons per minute
• Minimum of 30 psi water pressure required
• High to low temperature control
• Vents with 4" galvanized B vent – natural draft
• Built for durability and serviceability with 15-year warranty and 20+ year life expectancy
• Available in NG and LP models

The Bosch 330PN is also a good replacement heater for the older Aquastar 38B as they both are similar in BTU size and both take a 4" vent pipe.

The Bosch 330 PN could also replace the older Paloma PH6.  The 330 PN is 75K BTU and the PH6 was 43,800 BTU but both heater are good for small applications for camps and cottages.  The 330PN takes a 4" vent pipe like the PH6 did.  Please be aware that the 330PN requires a minimum of 30 psi of water pressure.