Replacing a Bosch Aquastar 125FX with a Bosch Therm 830ES

The older Bosch Aquastar model 125FX came in either Natural Gas (NG) or Liquid Propane (LP) and was 117,000 BTU and was a direct vent unit that was good for one major application at a time.  The 125FX had electronic ignition and was fan-assisted and took its combustion air from the room it was installed in.  The heater had a built-in fan so the heater could be vented right out the sidewall of the building.  The Aquastar 125FX had to be vented with 4" sealed stainless steel venting going a maximum of 15' out the sidewall of the building into the FXHood.  The FX Hood was a termination hood specifically designed for the 125FX and had a built-in flapper to keep cold air from penetrating the vent pipe and freezing the heater.  The Bosch Aquastar 125FX is discontinued now and has not been made for over 8 years or so.  One of the closest replacement models for the 125FX would be the new Bosch Therm 830ES.

Bosch Therm 830ES

The new Bosch 830ES comes in either Natural Gas (NG) or Liquid Propane (LP) and is 175,000 BTU which is slightly more BTUs than the older 125FX.  The Bosch 830ES needs a minimum of a 3/4" gas line and has 3/4" water connections also.  The 830ES is a sealed unit and takes its intake air from the outside using 3" PVC.  The unit is vented to the outside using 3" Stainless steel venting and this could be attached to the FX Hood that is already in place using a 3" to 4" increaser (Z-Flex Part #2SVSI0304).  The 830ES is digitally controlled and can go from 100 - 140 degrees F.  See below for more specifications and capacity.

Therm 830 ES	Specifications
Condensing/Non-Condensing	Non-Condensing
Application	Residential or Commercial
Max Input (BTU)	175,000
Min Input (BTU)	19,900
Capacity at 35°F Rise (gpm)	8.3
Capacity at 55°F Rise (gpm)	5.3
Intelligent Cascading	Yes
Min Flow Rate	0.5 gpm
Temp Range (°F)	100 - 140
Temp Stability (°F)	+/- 2
Default Temp (°F)	122
Energy Factor	.82
Thermal Efficiency	82%
Installation Options	Indoor or Outdoor (for outdoor, kit required)
Dimensions (w x h x d)	17 7/8" x 31½" x 11¼"
Weight (lbs.)	67
Inlet Connection	¾" NPT
Outlet Connection	¾" NPT
Gas Connection	¾" NPT
Max Water Pressure	150 psi
Min Water Pressure	30 psi
Min NG Presure	3.5" WC
Condensing Heat Exchanger	n/a
Venting Options	Stainless Steel
Vent Maximun Run	61.25'
Energy Star Rated	Yes

Outdoor Installation of Bosch 330PN, 520PN & 520HN

In past years, Bosch had always had naturally drafting gas tankless water heaters that were specifically designed for the outdoors.  The 117,000 BTU Bosch 125BO and 425HNO outdoor units were designed for outdoor use; however, they were discontinued about three years ago.  The Bosch 125BO and the 425HNO did not require any power to operate and were naturally drafting. They also did not require any venting. (These heaters did come with a power cord, but the power cord was only to provide for freeze protection and was not required for the regular operation of the water heater.)

The only outdoor Bosch tankless water heaters that are currently available are direct vent units and they require power to operate and have a special outdoor vent cap (BTOK) to protect them from the elements.  These specific outdoor units also have built-in freeze protection that is good for ambient freezes for short periods of time.

Bosch does still offer three different naturally drafting gas tankless water heaters that do not require any power to operate and are intended for indoor use but can be installed outside under special situations. The Bosch 330PN, Bosch 520PN and the Bosch 520HN are all naturally drafting units that require no power to operate.  These units come in either Natural Gas (NG) or Liquid Propane (LP). 

These units can be mounted outside if they are well protected from the elements and are able to get plenty of combustion air when in operation (See Image below of Bosch 330PN LP installed outdoors on a tree).  The 75,000 BTU Bosch Therm 330PN and the 117,000 BTU Bosch Therm 520PN and 520HN tankless water heaters will not be covered under any manufacturer's warranty if the unit freezes or if the heater gets damaged by rain.  Bosch Thermotechnology may void any warranty for the heater at their discretion as the Bosch 330PN, 520PN and the 520HN are intended for indoor applications.

This photo shows the Bosch 330PN-LP installed in a protected case with a sloped roof. The case is open on the bottom to allow for the easy flow of make-up air.

This photo shows the 330PN-LP from the front view with a hinge on the custom-built case that allows for easy access to the tankless water heater's controls.

Venting a Bosch Therm 330PN into an Existing Chimney

The Bosch Therm 330PN is a naturally drafting gas tankless water heater and must be vented to the outside using a minimum of a 4" diameter galvanized type B gas vent.  Under no circumstances should the vent pipe be reduced in size.  There must be a minimum of a 12" rise off the top of the heater before any 45's or 90 degree elbows.  If there is to be a horizontal section before going into the chimney then try and keep it as short as possible.  The maximum horizontal run allowed is half of the total vertical vent height.  45's, 90 degree elbows and any horizontal length is not to be considered in the total gas vent height.

The Chimney the Bosch 330 PN tankless water heater is venting into must be the only thing going into the chimney.  The galvanized type B gas vent must run all the way up the chimney to an approved rain cap.  The minimum vertical vent height is 6 ft and any horizontal vent connectors or elbows are not to be considered in the total gas vent height.  All gas vent sections of pipe must be screwed together with sheet metal screws and properly supported.  The Bosch 330 PN may be vented into the chimney alone as long as it is lined with the correct tile or metal ling.  Consult local codes for proper lining of chimney.  You may not vent any other fuel burning appliances into any free space remaining in the chimney.  Please see the illustration below for venting into the chimney and always follow the instructions listed in the installation manual for the heater.

A = Minimum of 6 ft. rise
1.  Listed approved Rain Cap
2.  Horizontal vent connection rising 1/4" per ft.
3.  Establish a 12" rise before any elbows

Venting a Bosch Therm 520PN or 520HN into an Existing Chimney

The Bosch Therm 520PN and Bosch Therm 520HN are both naturally drafting gas tankless water heaters and must be vented to the outside using a minimum of a 5" diameter galvanized type B gas vent.  6" diameter type B gas vent is required for all installations over 2,000 ft above sea level.  Under no circumstances should the vent pipe be reduced in size.  There must be a minimum of a 12" rise off the top of the heater before any 45's or 90 degree elbows.  If there is to be a horizontal section before going into the chimney then try and keep it as short as possible.  The maximum horizontal run allowed is half of the total vertical vent height.  45's, 90 degree elbows and any horizontal length is not to be considered in the total gas vent height.

The Chimney the Bosch tankless water heater is venting into must be the only thing going into the chimney.  The galvanized type B gas vent must run all the way up the chimney to an approved rain cap.  The minimum vertical vent height is 6 ft and any horizontal vent connectors or elbows are not to be considered in the total gas vent height.  All gas vent sections of pipe must be screwed together with sheet metal screws and properly supported.  The masonry chimney may have to be tile or metal lined before the insertion of the gas vent pipe.  Consult local codes for proper lining of chimney.  You may not vent any other fuel burning appliances into any free space remaining in the chimney.  Please see the illustration below for venting into the chimney and always follow the instructions listed in the installation manual for the heater.

A = Minimum of 6 ft. rise
1.  Listed approved Rain Cap
2.  Horizontal vent connection rising 1/4" per ft.
3.  Establish a 12" rise before any elbows

Dimensions of Ariston "S" Series Mini-Tank Heaters with T&PRV Installed

This is to provide an estimated dimension for the overall height of the Bosch Ariston "S" series mini-tank water heaters with the Temperature and Pressure Relief Valve (T and PRV Valve) installed.  There are 3 different models of the "S" series mini-tank heaters.  There is the model Ariston GL2.5S and holds 2.7 gallons of hot water, the Ariston GL4S and holds 4 gallons of hot water and then the larger Ariston GL6+S which holds 5.1 gallons of hot water installed vertical and around 7 gallons of hot water if water connections attached to the right side going horizontal.

Below is a list of the 3 Ariston min-tank water heaters dimensions overall and also height dimension with the T and PRV installed.  Please always try and leave room for maintenance and water pipes on the top (Top and Right Side for the GL6+S).

Ariston GL2.5S:
Unit Dimension:  13.75"W x 13.75"H x 10.75"D
Overall Height w/T and PRV installed:  13.75"W x 17"H x 10.75"D

Ariston GL4S:
Unit Dimension:  13.75"W x 13.75"H x 13.5"D
Overall Height w/T and PRV installed:  13.75"W x 17"H x 13.5"D

Ariston GL6+S Installed Vertically:
Unit Dimension:  17.5"W x 17.5"H x 14.5"D
Overall Height w/T and PRV installed:  17.5"W x 20.75"H x 14.5"D

Ariston GL6+S Installed Horizontally:
Unit Dimension:  17.5"W x 17.5"H x 14.5"D
Overall Width w/T and PRV installed:  20.75"W x 17.5"H x 14.5"D

The Ariston GL6+S does not come with a power cord.  The power cord is sold seperately.

Replacing Older Bosch Tankless with The Bosch Therm 830ES

The Bosch Therm 830ES Non-Condensing tankless water heater is a top performance, gas tankless water heater from Bosch. This 175,000 BTU heater is designed for residential applications and can deliver hot water up to 140 degrees F with a 8.3 GPM flow rate at a 35 degree rise.  Not approved for space heating applications.

This Energy Star approved tankless water heater can produce enough hot water for 2 major applications in most homes.

The Bosch Therm 830ES heater features an electronic ignition system and can vent through either 3 inch or 4 inch diameter stainless steel vent pipe either through the side wall or up through the roof. A stainless steel concentric side-wall venting option (ESHCK-Full-Kit) is also available.

The Bosch 830ES heater comes with built-in Freeze Protection but it does not come with the 3/4" PRV and the External Water Filter.  The freeze prevention kit is designed to provide protection for the water heater down to approximately 5°F for short term conditions only. It will not protect the appliance in areas where the temperature is routinely expected to be below freezing.  The freeze prevention kit will not protect plumbing outside the appliance from freezing.

The Bosch Therm 830ES is a wholesale model heater and sold to licensed plumbers and contractors.  The new Bosch Therm 830ES is a close replacement for older models such as the Bosch 250SX/250SXO, 635ES/635ESO and the 2400E.  Please be aware the 830ES is 7" taller, 2.375" wider and 2.75" deeper than the previous models. The Bosch 830ES is a direct replacement for the Bosch 2400ES.  For outdoor installations the Bosch 830ES would require the BTOK Outdoor Kit.

The Bosch Therm 830ES comes with a limited 15 year warranty on the heat exchanger and 5 years on all other parts.  Service and labor costs are not covered.

Webstone Isolation Service Valve's

Globaltowne carries a wide range of Webstone Isolation Service Valves for all tankless water heaters. There are many different types of Webstone valves ranging from complete kits to long valves and short valves to complete any tankless water heater installation.

The Webstone Isolation valve set pictured is a Lead-free Isolation Valve Kit for All Bosch Gas Tankless Water Heaters (44443WPR) comes with separate hot and cold isolation valves and a Pressure Relief Valve. Easy two-step installation of your tankless water heater with unsurpassed safety, features and benefits. This is a complete inlet/outlet valve system that provides everything you need for a secure installation, including full port testing and flushing of the system with easy-to-install union connections.

Bosch Gas & Electric Residential Tankless Water Heaters 2015 NAECA Standards

The U.S. Department of Energy has increased the energy factor requirements for residential water heaters effective April 16th, 2015 through the National Appliance Energy Conservation Act (NAECA).

This update of regulations will affect all manufacturers selling residential water heaters in the U.S. Residential water heaters include storage type units that store heated water in an insulated tank and instantaneous type units that heat water on demand.

These standards only apply to gas fired storage (<=75 kBTU/h input), oil-fired storage (<=105 kBTU/h input), tabletop storage (<=12kW input), all electric (<=12kW input), and instantaneous gas (<200 h="" input="" kbtu="" p="">

Impact of NAECA standards:
Increased Energy Factor ratings on almost all residential water heater technologies and sizes will impact manufacturers, wholesalers, contractors, and end users.

Impact on Products:
Gas tankless water heaters:  Increased Energy Factor requirements will only allow models with EF 0.82 and over to be manufactured as of April 16th. Models operating at or over EF 0.82 will not be affected. Most of Bosch’s tankless water heaters fall in this category of EF over 0.82.

Impact on Wholesalers and Contractors:
These NAECA regulations will affect wholesalers and contractors and it is important to note these forthcoming changes. Tankless products may be a more suitable alternative in certain applications. Tank-type gas water heaters >55 gal. may require line voltage and condensate disposal. In addition, HPWH technology will be required in electric tank-type >55 gal.

Anti Freeze Prevention Kit for Bosch 1600P & 1600H

The Bosch Freeze Prevention Kit, part number 7709003775 is sold as an accessory and is approved for the Bosch 1600P/1600H/520PN & 520HN tankless water heaters.  The Freeze Protection Kit is designed to provide protection for the water heater down to approximately 5 degrees F for short term conditions only.  Power is required for the freeze prevention kit and plugs directly into a 110V outlet.   It will not protect the appliance in areas where the temperature is routinely expected to be below freezing.

The Freeze Prevention Kit will not protect plumbing outside the appliance from freezing.  Precautions should be taken to prevent this.

For more information and to order the Bosch 1600/520 Freeze Protection kit please call us at 888-726-9752.

AQ1 Powervent Kit Obsolete

The Bosch AQ1 Powervent kit is now obsolete.  This powervent kit was designed and used for the older Bosch models:  125VP/170VP/125B/125HX/125X/125BS and 125BL heaters.

Bosch still has some parts in stock for the AQ1 powervent kit such as the Blower motor part #7738001022. Stock for the individual parts for the AQ1 powervent kit will only be available for a limited time as supplies last.  Please call us at 888-726-9752 for pricing and availability for individual parts.

Bosch replaced the AQ1 powervent kit with the newer AQ4 Powervent Kit and this new powervent kit will only work with the following Bosch tankless water heaters:  1600P/1600H/520PN/520HN.  The Bosch AQ4 powervent kit is different than the older AQ1 powervent kit and operates with a flow switch to activate the blower motor instead of the gas pressure switch in the older AQ1.

Descaling My Bosch C1050ES Tankless Water Heater

A few weeks ago I descaled my Bosch Greentherm C1050ES-LP Condensing Tankless Water Heater and it was far easier than I had imagined it would be. The total elapsed time to do the complete job was less than an hour. I took a few pictures as I went through the steps.

The above picture shows the JC Whitlam Flow-Aide Descaler Kit. This kit contains the (2) 5' hoses, the submersible pump, the pump intake filter and one quart of Flow-Aide descaling solution.

The above picture shows my Bosch Therm C1050ES-LP condensing tankless water heater and my Webstone 44443WPR Lead-Free Isolation Valves. I took this photo after I had closed the two yellow-handled main water valves and after I had opened the two service ports. I had to place a bucket beneath the two valves to catch the water that was in the internal piping of the tankless water heater.

The above picture shows the two 5' hoses that come with the Descaling Kit attached to the two service ports on my Webstone Isolation Valves.

The above picture shows the Flow-Aide bucket and descaling solution. I had already put one gallon of cold water in the bucket and mixed in the one quart container of Flow-Aide solution. This descaling solution is non-toxic and bio-degradable.

The above picture shows the submersible pump output attached to the cold water connection on my tankless water heater. The pump is not plugged in yet.

The above picture shows the included intake filter attached to the submersible pump input. This filter prevents any debris from being run through the tankless water heater. The pump is still not plugged in.

The above picture shows the descaling process in action. Here you can see the hose from the hot water connection to my water heater just hanging into the bucket. You can also see that I have plugged the submersible pump into a GFCI protected 110 V power outlet.

I let the descaling process run for about 30 minutes. I then emptied out the bucket and rinsed it out thoroughly. I then put about a gallon of cold water into the bucket and I ran that cold water through my tankless water heater for about 5 minutes just to clean it all out.

Lastly, I disconnected everything and then I closed the two service ports on my Isolation Valves. I then opened up the two yellow handles to let the water flow back into my water heater. When I turned on a hot water demand everything worked perfectly!

Vertically constructed vent stack along the outside of the home

It is not permissible to vent a naturally drafting gas tankless water heater such as the Bosch 520HN, 520PN, 1600H, 1600P, 330PN or the 1000P out and up the side wall of the home.  This is not safe as the exposed venting running up the side of the home will be exposed to the elements and cold.  When the temperature outside gets cold and makes the vent stack cold then the exhaust gases from the Bosch tankless water heater will not properly draft to the outside and can fill the home with carbon monoxide.

The installation manual states: "Horizontally venting to a vertically constructed vent stack along an outside wall of a building is not permissible".  This is also against the National Fuel Gas Code (NFGC).  If a Bosch tankless water heater needs to be vented Horizontally out the sidewall of the building then you would be required to use the Bosch AQ4 Powervent Kit.  The AQ4 power vent kit is designed to activate when the tankless water heater comes on and blow the exhaust gases outside.  The Bosch AQ4 power vent kit can be used with the Bosch 520HN, 520PN, 1600H and the 1600P.  The Bosch 330PN and 1000P cannot be power-vented and must be vented vertically up through the roof of the building.


This rule for venting up the outside of the building also applies to the older Bosch Aquastar 125 series heaters and the ELM VP heaters.  For older gas tankless water heaters that were installed and vented up the outside of  the building they would want to have a chase built around them and box the venting in.  Please always be aware of the minimum venting clearances for all venting material.  Please see the before and after pictures below of a vent stack running up the outside of the home.

Incorrect Vent Stack

Corrected Vent Stack

Bosch Therm 520HN, 520PN & 330PN being Phased Out

Bosch Thermotechnology has recently announced that the Bosch Therm 520HN, Bosch Therm 520PN and the Bosch Therm 330PN will be phased out as of April 2015.  Bosch Thermotechnology will not be manufacturing anymore of these units after April 2015.  Globaltowne will still be selling the Bosch Therm 520HN, 520PN and 330PN for as long as we have the stock.  These units are being phased out due to a requirement for all gas appliances from the Dept of Energy that states they have to have a minimum of an 82% thermal efficiency and the 520's & 330 PN are only 81%.

Impact on the Homeowner

The homeowner will have to deal with increased product and installation costs. In some cases, the water heater will have to be re-located to operate properly, or mitigate noise. While the operating cost of the new water heaters will be less because of their increased energy efficiency, it is likely that the maintenance costs will increase because of a more complex design, and the integration of electronics, blowers, fans, condensers, etc.  In some cases, the performance of the new water heater in terms of hot water deliverability will be less than the model which was replaced.

The Bosch Therm 520HN and the Bosch Therm 520PN are direct replacements for the older Aquastar model heaters such as the 170VP, 125VP, 125B, 125X, 125HX and the 1600H & 1600P.  Please be aware that if replacing an older model 125 series heater and the heater was vented out the sidewall of the home using the AQ1 powervent then you would need to order the new replacement heater and the new AQ4 powervent kit.  The new model Therm heaters are not compatable with the older AQ1 powervent kit.

The Bosch Therm 330PN is a direct replacement for the older Bosch 80VP, 38B and 1000P units.  These units are too small and cannot be powervented.

New Ariston "S" Series Replacement Parts

UPDATE 08/17/2023

Bosch Thermotechnology has recently changed the part number for the Bosch GL6+S/GL8TiS/ES8 Thermostat.  The old part number was 87387044420 and the new part number is 8738711261.  GlobalTowne carries this thermostat in stock and can be found at the link below:

GL6+S/GL8TiS/ES8 Thermostat 8738711261

GlobalTowne.com sells user replaceable spare parts for the New Ariston "S" Series Line of mini-tank electric water heaters.  Be sure to buy the correct parts -- one set of parts works for the New Ariston GL2.5S and GL4S models while another set of parts works for the Ariston GL6+S model.

For the Ariston GL2.5S and Ariston GL4S electric mini-tank water heaters we sell the replacement for the sacrificial Anode Rod #87387044470 (Old part #574305). This part can be used for the Ariston GL2.5/GL2.5S, Ariston GL4/GL4S, Airston GL2.5Ti/GL2.5TiS, GL4Ti/GL4TiS and Ariston ES2.5/ES4  mini-tank water heaters as well as for the now obsolete Ariston models P10S and P15S.

We also sell the Ariston GLSKIT which contains the sacrificial anode rod for the Ariston GL2.5S/GL4S Series (#87387044470) as well as the heating element (#87387044390) and the GLS gasket (#87387044500). This Kit can be used for the Ariston GL2.5S, Ariston GL4S, Airston GL2.5TiS, Ariston GL4TiS, ES2.5 and ES4 mini-tank water heaters.

We sell the Ariston GL6+S KIT which includes the element, anode rod, gasket and bolts.  This kit can also be used for the pro series heater Bosch Tronic 3000T ES8.

For the Ariston GL6+S electric mini-tank water heater we sell the replacement for the sacrificial Anode Rod (#87387044480) (Old number #570241). This slightly longer part can also be used for the Bosch Pro Ariston GL8Tiand ES8 mini-tank water heaters.

The new Ariston GL2.5S/GL4S take a new Wired Thermostat #87387044410.  The old part number was #7738002302.  This new wired thermostat can also be used for the GL2.5TiS/GL4TiS and the ES2.5/ES4.

The new Ariston GL6+S takes a new Wired Thermostat #87387044420. This new wired thermostat can also be used for the ES8.

Bosch Therm 520HN & 520PN Installed at Elevation

The Bosch Therm 520HN and the Bosch Therm 520PN can be installed at elevations for people with homes or cabins in Colorado, New Mexico, etc.  The Bosch 520HN & 520PN are natural drafting units and require a 6" galvanized type B-vent and must vent vertical for a minimum of 6' to the rain cap for all elevations over 2,000'.

Gas pressure is dependent upon the gas type whether it is Natural Gas (NG) or Liquid Propane (LPG) and also the length of the gas line.  See sizing charts in the installation manual for the heaters.  The Bosch 520HN & 520PN can be installed above 4,500' elevation but the unit would have to have the gas pressure adjusted using a manometer to compensate for the air and gas mix at the high elevation.  Please see the insert below for more details.

Cutting the gas pressure back as per the chart above is called "de-rating" the burner.  Elevations above 2,000 ft require the Bosch tankless water heater to be de-rated 4% for every 1,000 feet.  Basically you will loose 4% of your heating capacity for every 1,000 ft.

Bosch 5" B-Vent Vertical Vent Kit (H/P VVT)

The Bosch Vertical Vent Kit (H/P VVT) is a 5" Galvanized, Type B Vertical Vent Kit. This vertical vent kit includes a 5" x 12" pipe, (2) 5" flexible 90 degree elbows, a 5" fire stop support, a 5" roof flashing, a 5" storm collar, and a 5" rain cap. The HP VVT Vertical Vent Kit is manufactured by Selkirk and is used only for the Bosch Therm 520HN and 520PN naturally drafting heaters.  The H/P VVT vent kit will also work for the older retail models 1600H and 1600P.

The venting system must be designed and constructed so as to develop a positive flow adequate to remove flue gases to the outdoors.  Consult the National Fuel Gas Code if the vent will have elbows or share venting with another natural draft appliance.  The vent system must have at least a 12" rise off the top of the heater before any elbows or vent connectors.  

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.

Mr. Heater Propane Indoor/Outdoor Heater/Cookers

Globaltowne is pleased to announce we are now carrying a full line of Mr. Heater Indoor/Outdoor Heaters and cookers.  The Mr. Heaters run on Liquid Propane (LPG) gas and can either be hooked to a 20 lb LP tank or the small propane cylinders.  The Mr. Heaters are designed for heating different size areas depending on the BTU size of the heater.  There are also heater/cookers which are great for camping and the outdoors. Please see the full line of heater/cookers listed below.

The Mr. Heater MH18B Big Buddy Heater is a portable 4,000 to 18,000 Btu space heater that can heat a space of up to 400 sqft and can be used for both indoor and outdoor applications. The heater attaches to either a 20 lb propane cylinder with an optional hose connection or to two 1 lb disposable propane cylinders with a new swivel out regulator. This portable space heater also comes with an automatic safety shut off in case of accidental tip-over or low oxygen as well as a battery operated fan (batteries not included).

The Mr. Heater MH12B Hunting Buddy Heater is a portable 6,000 to 12,000 Btu space heater that can be used for outdoor recreational applications. The heater attaches to either a 20 lb propane cylinder with an optional hose and filter or a 1 lb disposable propane cylinder with a new swivel out regulator. The heater also comes with extra storage space that can house a spare 1 lb propane cylinder, gloves, or other accessories. This portable space heater has an automatic safety shut off in case of accidental tip-over or low oxygen.

The Mr. Heater MH9BX Buddy Heater is a portable 4,000 to 9,000 Btu space heater that can heat a space of up to 200 sqft and can be used for both indoor and outdoor applications. The heater attaches to a 20 lb propane cylinder with a new swivel out regulator and optional hose connection or directly to a 1 lb disposable propane cylinder. This lightweight and easy to carry portable space heater also comes with an automatic safety shut off in case of accidental tip-over or low oxygen.

The Mr. Heater MH4B Little Buddy Heater is a portable 3,800 Btu indoor space heater that can heat a space of up to 100 sqft. The heater attaches directly to the top of a 1 lb disposable propane cylinder. This lightweight portable space heater also comes with an automatic safety shut off in case of accidental tip-over as well as a low oxygen sensor.  The MH9BX Buddy Heater is perfect for every day home use, garages, workshops, and roadside emergencies.

The Mr. Heater MH15C Propane Heater is a tank top heater that attaches to the top of a 1 lb disposable propane cylinder and comes with a foundation base that allows you to alternate use between a space heater and cooking stove. The propane cylinder is not included. This outdoor only space heater is similar to the MH15 but can also be used as a cooking stove. The MH15C heater/cooker has an adjustable high to low heat control with a 10,000 to 15,000 btu range and an automatic safety shut off is also included.  This small, easy to pack, space heater is perfect for all outdoor recreational activties including camping, fishing, hiking, and tailgating.

The Mr. Heater MH15 Propane Heater is a tank top heater that attaches to the top of a 1 lb disposable propane cylinder and comes with a foundation base to insert the propane cylinder into. The propane cylinder is not included. This outdoor only space heater has an adjustable high to low heat control with a 10,000 to 15,000 btu range. An automatic safety shut off is also included.  This small, easy to pack, space heater is perfect for all outdoor recreational activties including camping, fishing, and hiking.  The Mr. Heater MH15 Outdoor Propane Heater is the direct replacement for the Paulin 5500 Heater.

Globaltowne Clearance Heaters

Globaltowne is always bringing in new and upgraded Bosch gas and electric tankless water heaters. Globaltowne currently has a few Bosch gas tankless water heaters on clearance.  These units are priced to sell to make room for new stock.  All of the Bosch tankless water heaters that Globaltowne sells are brand new and come with a full warranty.  There are many different BTU size units for all types of homes for both indoor and outdoor installations.  Please see the links below for the heaters on clearance.

Clearance Heaters
Bosch Integra 500 LP (Liquid Propane)
Bosch Evolution 500 NG (Natural Gas)
Bosch Evolution 500 LP (Liquid Propane)
Bosch Therm 660EFO NG (Natural Gas) Outdoor unit

Please visit our Globaltowne website at www.globaltowne.com for more information on the tankless water heaters and accessories.

Humphrey Preformed Mantle L13-2 for Model 9 Gas Lights

Humphrey Preformed Mantle L13-2 for Humphrey Gas Light Model 9 (1 mantle).  Cross reference part:  #8 Mantle.  The L13-2 is intended for use with Humphrey Burner Nose L12-2A.

The Humphrey Pre-formed Mantle L13-2 is intended for use with all model 9 Humphrey Indoor Gas Lights. Use in only stationary conditions such as buildings (not recommended for recreational vehicles).

The Humphrey Preformed Mantles also come as a 6 pack and the part number is L12-2-6pk (6 Mantles).