Vent Heater
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 NATURAL GAS TANKLESS WATER HEATER 16 L with Power Vent $349.95 Time Remaining: 21h 25m Buy It Now for only: $349.95 |
 Bosch AQ3ES 3 inch Horizontal Vent Kit for Tankless Water Heaters New $52.00 (2 Bids) Time Remaining: 5h 49m |
 AQUAH DIRECT VENT NATURAL GAS TANKLESS GAS WATER HEATER $389.50 Time Remaining: 16d 1h 58m Buy It Now for only: $389.50 |
 Heat Fab RTG20007 Rheem Tankless Water Heater Installation Vent Kit 4 $225.00 Time Remaining: 23d 16h 38m Buy It Now for only: $225.00 |
 Rheem Prestige Direct Vent LP Tankless Water Heater RTGH 95DVP NEW $1,189.99 Time Remaining: 28d 23h 50m Buy It Now for only: $1,189.99 |
 NEW AO Smith POWER SHOT Power Vent Gas Water Heater PROPANE 50gl $1.00 Time Remaining: 1d 14h 58m |
 Mr Heater 20000 BTU Propane Blue Flame Vent Free Heater VF20KBLUELP $99.99 Time Remaining: 25d 13h 33m Buy It Now for only: $99.99 |
 Suburban Furnace Heater Ext Vent 260573 Replaces 260542 $16.29 Time Remaining: 20h 44m Buy It Now for only: $16.29 |
 Tankless water heater vent kit for 53DV 66DV models $140.79 Time Remaining: 13d 14h 34m Buy It Now for only: $140.79 |
 Tankless Water Heater Vertical Vent Kit $50.00 Time Remaining: 2d 2h 11m Buy It Now for only: $55.00 |
 Rheem RTG 64DVN Tankless Water Heater Direct Vent $605.99 Time Remaining: 5d 16h 9m Buy It Now for only: $605.99 |
 Air Vent valve for Solar Water Heater Pressure Relief valve size1 2 copper $6.99 Time Remaining: 16d 22h 35m Buy It Now for only: $6.99 |
 Rinnai Es11 263 Direct Vent Heater $685.00 Time Remaining: 14d 12h 22m Buy It Now for only: $685.00 |
 Bosch Tankless Water Heater outdoor vent kit $45.00 Time Remaining: 2d 2h 36m Buy It Now for only: $50.00 |
 Noritz VT4 S45 Tankless Water Heater 45 Degree 4 Vent Termination $39.00 Time Remaining: 12d 11h 26m Buy It Now for only: $39.00 |
 NEW AC A C AIR CONDITIONER HEATER REGISTER VENT GRILLE $11.88 Time Remaining: 2d 2h 13m Buy It Now for only: $11.88 |
 Rheem Prestige Direct Vent NG Tankless Water Heater RTGH 95DVN NEW $1,189.99 Time Remaining: 9d 15h 59m Buy It Now for only: $1,189.99 |
 Bosch Tankless Water Heater outdoor vent kit $45.00 Time Remaining: 2d 2h 39m Buy It Now for only: $50.00 |
 New Rheem Richmond Propane Direct Vent Tankless Water Heater RMTG 66DVP $615.99 Time Remaining: 12d 17h 42m Buy It Now for only: $615.99 |
 Rheem Direct Vent LP Tankless Water Heater RTG 84DVP NEW $789.99 Time Remaining: 29d 5h 52m Buy It Now for only: $789.99 |
 NEW 4000 W Electric Wall Vent Space Heater Low Profile 208 V White 13000 BTU $194.25 Time Remaining: 11d 17h 25m Buy It Now for only: $194.25 |
 Rinnai 224050 Vent Pipe Elbow for Tankless water heaters $74.00 Time Remaining: 2d 12h 36m |
 New Rheem 74 GPM Tankless Water Heater Commercial Propane Direct Vent GT 199DVP $703.99 Time Remaining: 10d 17h 34m Buy It Now for only: $703.99 |
 BLUE FLAME NATURAL OR PROPANE GAS HEATER 10K VENT FREE $105.85 Time Remaining: 12d 23h 53m Buy It Now for only: $105.85 |
 40 GALLON DIRECT VENT NATURAL GAS HOME HOT WATER HEATER $969.99 Time Remaining: 13h 4m Buy It Now for only: $969.99 |
 New Comfort Glow Vent Free Gas Space Wall Heater 20K $119.99 Time Remaining: 10d 22h 52m Buy It Now for only: $119.99 |
 Rinnai Vent Pipe Extension 224052 19 1 2 Inch for tankless water heaters $28.00 Time Remaining: 2d 12h 36m |
 NEW Beautiful Floor Register Heater Air Vent Cover White Metal Grate 4 X 12 LK $12.00 Time Remaining: 8d 15h 5m Buy It Now for only: $12.00 |
 Twin Star International Electric Vent Free Fireplace With Heater 18EF023GRA $125.00 Time Remaining: 7d 17h 26m Buy It Now for only: $125.00 |
 KOZY WORLD VENT FREE GAS WALL HEATER NATURAL OR PROPANE GAS GWD208 $200.00 Time Remaining: 23d 2h 53m Buy It Now for only: $200.00 |
 Ritetemp 20000btu Vent Free Natural Gas Heater $25.00 Time Remaining: 2d 14h 31m Buy It Now for only: $125.00 |
 New Comfort Glow Vent Free Propane Wall Heater 20K $132.99 Time Remaining: 26d 36m Buy It Now for only: $132.99 |
 Rheem Indoor Direct Vent LP Tankless Water Heater RTG 84DVLP NEW $799.99 Time Remaining: 1d 18h 6m Buy It Now for only: $799.99 |
 Empire Direct Vent Heater Wall Furnace Nat Gas $800.00 Time Remaining: 24d 14h 56m Buy It Now for only: $800.00 |
 Williams Forsaire 40000 BTU Direct Vent Natural Gas Wall Furnace Heater 4007732 $99.99 Time Remaining: 2d 20h 48m |
 TANKLESS WATER HEATER NATURAL GAS 25 BATH Direct Vent $494.95 Time Remaining: 6d 18h 28m Buy It Now for only: $494.95 |
 AQUAH DIRECT VENT PROPANE GAS TANKLESS WATER HEATER 14L $439.95 Time Remaining: 25d 9h 19m Buy It Now for only: $439.95 |
 Williams 3509622 35000 BTU Monterey Top Vent Wall Furnace Heater Natural Gas $659.95 Time Remaining: 17d 14h 56m Buy It Now for only: $659.95 |
 Kerosene Vented Heater PARTING OUT 03 Honeywell Controller Fuel MPI Monitor 40 $24.99 Time Remaining: 2d 23h 2m |
 AQUAH PREMIUM DIRECT VENT PROPANE GAS TANKLESS WATER HEATER 14L 37 GPM $439.95 Time Remaining: 19d 16h 28m Buy It Now for only: $439.95 |
 Williams 3509621 35000 BTU Monterey Top Vent Wall Furnace Heater Propane LP $659.95 Time Remaining: 17d 14h 56m Buy It Now for only: $659.95 |
 Eccotemp Horizontal Stainless Steel Z Vent Water Heater Vent Kit 3 $199.99 Time Remaining: 5d 13h 19m Buy It Now for only: $199.99 |
 Kerosene Vented Heater PARTING OUT 04 Electronic Circuit Board MPI Monitor 40 $179.99 Time Remaining: 2d 23h 3m |
 Rheem 50 Gal FVR Nat Gas PWR Vent Water Heater 43VP50E2 $319.20 Time Remaining: 10d 17h 40m Buy It Now for only: $319.20 |
 NATURAL GAS HEATER 30K VENT FREE Heats 1000 Sq Ft NEW $199.99 Time Remaining: 20d 12h 43m Buy It Now for only: $199.99 |
 Tankless water heater vent kit for 53PV models $140.79 Time Remaining: 13d 14h 40m Buy It Now for only: $140.79 |
 Non Electric Direct Vent Propane LP Gas Heater 75K Btu $364.00 Time Remaining: 3d 20h 14m Buy It Now for only: $400.40 |
 AO Smith Power Vent Blower Assembly Hot Water Heater FPS 40 226 227 9004363105 $49.99 Time Remaining: 1d 19h 44m Buy It Now for only: $49.99 |
 Marley LFK304 Electric Wall Heater Vent White Model 10000 BTU Recessed Mount $194.25 Time Remaining: 11d 17h 24m Buy It Now for only: $194.25 |
 PROCOM 10K BTU PROPANE LP WALL HEATER VENT FREE TSTAT $119.95 Time Remaining: 12h 39m Buy It Now for only: $119.95 |
 TANKLESS WATER HEATER PROPANE LPG DIRECT VENT 25 BATH $494.95 Time Remaining: 6d 18h 29m Buy It Now for only: $494.95 |
 Non Electric Direct Vent Propane LP Gas Heater 18K Btu $535.00 Time Remaining: 3d 20h 14m Buy It Now for only: $590.00 |
 ProCom 30000 BTU Dual Fuel Vent Free Blue Flame Heater with Blower Base NG LP $269.95 Time Remaining: 3d 15h 50m Buy It Now for only: $269.95 |
 PROCOM 30K NG LP DUAL FUEL WALL HEATER VENT FREE TSTAT $219.95 Time Remaining: 12h 39m Buy It Now for only: $219.95 |
 New Rheem Tankless Water Heater 74 GPM Propane Gas Power Vent RTG 74PVP $703.99 Time Remaining: 15h 19m Buy It Now for only: $703.99 |
 Non Electric Direct Vent Natural Gas Heater 18K Btu $535.00 Time Remaining: 3d 20h 14m Buy It Now for only: $590.00 |
 AQUAH DIRECT VENT PROPANE GAS TANKLESS WATER HEATER NEW $389.50 Time Remaining: 16d 2h 11m Buy It Now for only: $389.50 |
 Rinnai Ex22C Direct Vent Heater Natural Gas $1,035.00 Time Remaining: 17d 10h 28m Buy It Now for only: $1,035.00 |
 Rheem Direct Vent NG Tankless Water Heater RTG 64DVN NEW $649.99 Time Remaining: 9d 7h 53m Buy It Now for only: $649.99 |
 3 DIA GAS CONCENTRIC VENT KIT STAINLESS STEEL WATER HEATER BOILER FURNACE $86.99 Time Remaining: 3d 20h 37m |
 GAS TANKLESS WATER HEATER DIRECT VENT WHOLE HOME $494.95 Time Remaining: 14d 7h 55m Buy It Now for only: $494.95 |
 Rheem RTG 64DVN tankless water heater w free vent Quantity of 3 $1,797.00 Time Remaining: 26d 9h 42m Buy It Now for only: $1,797.00 |
 30K VENT FREE BLUE FLAME PROPANE WALL SPACE HEATER $144.95 Time Remaining: 12h 39m Buy It Now for only: $144.95 |
 Bosch AQ3ES Horizontal Vent Kit for 2400ES 2700ES Heaters $59.99 Time Remaining: 4d 1h 31m |
 Rheem Direct Vent LP Tankless Water Heater RTG 64DVP NEW $649.99 Time Remaining: 10d 7h 50m Buy It Now for only: $649.99 |
 Mr Heater Vent Free 20000 BTU Blue Flame Natural Gas Heater $216.35 Time Remaining: 23d 15h 14m Buy It Now for only: $216.35 |
 NEW AC A C AIR CONDITIONER VENT GRILLE HEATER REGISTER $11.88 Time Remaining: 7d 12h 42m Buy It Now for only: $11.88 |
 Vent Free Gass Heater 9500BTU $25.00 Time Remaining: 5d 17h 46m |
 New Duraflame Vent Free Electric Heater Stove Fireplace 1350 watts 4600 BTUs $94.99 Time Remaining: 1d 7h 10m Buy It Now for only: $94.99 |
 HOFFMAN SPECIALTY 791 STEAM UNIT HEATER AIR VENT 1 4 $25.00 Time Remaining: 24d 17h 17m Buy It Now for only: $25.00 |
 Reliance 50 Gallon Natural Gas Power Vent Water Heater $899.99 Time Remaining: 9d 16h 35m Buy It Now for only: $899.99 |
 LomanCool 2000 Power Vent Thermostat for Heater Brand new in Box great deal look $0.99 Time Remaining: 3d 11h 26m |
 Bosch 3 in Diameter x 4 ft Stainless Z Vent Tankless Water Heater Pipe NEW $44.95 Time Remaining: 23d 18h 46m Buy It Now for only: $44.95 |
 MR HEATERMHVFB20NGBT20000BTUVENT FREENATURAL GASWALL HEATER $99.99 Time Remaining: 25d 13h 36m Buy It Now for only: $99.99 |
 HearthRite Vent Free Blue Flame Heater 10000 BTU LP $179.99 Time Remaining: 18d 18h 18m Buy It Now for only: $179.99 |
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Gas Tankless Water Heater-Best Locations for Installation
This is a long article but it goes in-depth about planning the location of your gas or propane heater. The first thing to do is forget about the location of your old tank system and think about where you would install the system if it was a brand new house without any water heater installed. This is the mindset you will need to properly evaluate the best location for installing your system.
The Basic Installation
The basic gas heater installation requires the properly sized tankless water heater, venting components, extension of the hot and cold piping, an electrical connection and a gas connection. The size of the heater can be determined based on how many fixtures you are connecting to the heater but is not covered in this article. The venting components include the combustion air intake and exhaust flue, sometimes called the intake and exhaust piping. The electrical connection is typically for the on-board controls and spark to light the gas. The gas connection is the piping that connects to your existing gas service, which will be extended to your heater. These are the typical components and each one needs to be considered before selecting the best location for your heater.
Venting Discussion
Direct vent heaters are the recommended types of heaters to install. Some have a fan to assist in the combustion process and some don't. The reason for direct vent types is based on building code requirements. Most, if not all codes require that gas burning equipment be installed where they have enough air to "breathe". For every BTU input of gas to the heater, there needs to be enough air in the room to assure that the combustion chamber of the heater breathes freely. Simply put, the bigger the heater, the bigger the room has to be to avoid "starving" the combustion chamber. This requirement determines if the room is to be considered a "confined space" or not. When you do the calculation for a non-direct vent heater, most spaces are considered as a confined space and this probably includes your garage. If your building inspector finds a non-direct vent heater installed in a confined space, you will probably be told to add 2 new penetrations through the wall (known as high-and-low venting) or you will be told to remove it until it conforms to the code requirements.
For those interested in the exact code terminology here you go; UNCONFINED SPACE- A space having a volume not less than 50 cubic feet per 1,000 Btu/h of the aggregate input rating of all appliances installed in that space. Rooms communicating directly with the space in which the appliances are installed, through openings not furnished with doors, are considered a part of the unconfined space.
Take a look at your current gas heater and notice the vent hood which is slightly above the top of the heater. This is normally a 3 or 4 inch diameter stainless steel vent the collects the products of combustion and funnels them to the exterior. It is a direct route to the exterior from the heater and works on the "hot air rises" principle which means that the hot combustion gases from the heater rise up, get captured by the draft hood and are lead to the exterior. Because it is a direct route, air in the space also gets lead to the exterior when the gas heater is not working. Therefore, regardless of the efficiency rating of your tankless heater, if it is not a direct-vent model, your home will lose heat (and air conditioning) to any tankless model that uses room air for combustion.
To avoid throwing away any air in your house or business and installing it in an "enclosed area", direct vent models are recommended because they get combustion air from the exterior of your home or office and route the products of combustion to the exterior as well. They do not use inside air for combustion which probably is already conditioned by your heating and air conditioning system.
Minimize The Expenses
Other than the cost of the heater, the most expensive part of the installation is the intake and exhaust piping. When considering an optimized location for your gas heater, consider an exterior wall that is close to your plumbing fixtures. This will minimize your venting costs and the time it takes the hot water to get to your fixture (known as "lag"). Your first instinct may be to install the tankless heater in the same location as the old tank type heater. Resist this thought. Can you use the space more efficiently if the water heater was not there?
The second biggest expense is the extension of your gas piping. Normally there are not many runs of gas piping in your residence or business due to the cost of materials and installation. Consider a location where the gas piping is relatively close and easy to extend. The piping size will be determined by the size of the heater but if you can connect to a 3/4 inch piece of pipe, you are probably ok.
Running a close third in expenses is the cost of extending the hot and cold piping. This is about the same cost as running the new gas line so I won't repeat what is discussed above. All I will say is that this should not stop you from evaluating your installation location.
The last expense is the electrical circuit. The electrical connection is typically for the on-board controls and spark to light the gas. The amount of electricity required for a gas heater is very small. In most situations, the electrician can connect to an existing circuit that is powering your wall receptacles or something similar. Even if it is a longer run to a better connection point, the expense is not that great and should not stop you from optimizing your installation location.
Don't Let a Little Bit Education Stop You
The installation of a tankless system is a step forward in technology and greener, more efficient living. This is a major change to most American households and many people have not embraced this technology because it is so new. Consider educating yourself more about these systems because they will soon dominate the water heater industry. It is human nature to be reluctant to change old habits, but a bit of education and preparation is all you need to break from tradition. You may hear negative comments from people, even from some plumbers. The negative comments may simply be due to inexperience or lack of education about these systems. More and more plumbers are recognizing this as an opportunity and immediately jumping on board.
About the Author
I am a professional engineer with over 30 years of design experience relating to plumbing and mechanical systems. Visit the Tankless Water Heater Center or visit my professional site.