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A true tankless water heater has a very high amperage power requirement and unless youre planning to rewire to a 220 V system the smaller 110 V systems often require more than 30 A of service. Add in a re-circ system and youll save thousand of gallons of water also.
This ensures that the flow goes out the pipe and not back into the boat.
Tankless water heater for boats. Tankless propane water heaters carry serious risk of causing carbon-monoxide poisoning or oxygen depletion when mounted in a tight or sealed space. Because a boat is more tightly sealed than a shoreside home the carbon monoxide is more likely to become trapped. This link show a simple on Hot Water Heaters.
I have worked on these before both in home use and commercial use. BIG 1000 gallon tank with this small Instant heater not much larger than a house unit. 3 If your houseboat has propane appliances you can install a propane hot water tank vented to the outside exterior.
4 And another very popular installation is a on-demand tankless hot water heater. Now depending on the tankless heater model they have different specifications when it. Boater deaths have been attributed to tankless water heaters and several brands have been recalled over the years-among them Wolter Water Heater Paloma and Rheem-Rudd-because they posed a carbon-monoxide poisoning hazard.
That said you will find tankless propane water heaters on some production boats but it is buyer beware in our opinion. In fact the typical boat owner can expect to use very little propane for all this comfort. Estimated 920 gallons of shower temperature water per 20 pounds of propane.
The ShowerMate propane fired tankless water heater is stainless steel construction and can be mounted as a closed combustion system for safety and peace of mind. Spend the money and get a good one. Webesto and Espar make coolant heaters that will circulate thru your engine and hot water heater but there obviously not on demand.
I hate the idea of using a AC genset just to make hot water. It is so dumb. Your taking diesel fuel burning it in a genset to make electricity to make hot water.
What is your purpose for wanting a tankless water heater. It is hard to beat a Seward water heater at 225 that will heat off the engine or electricity. If you had a tankless run off of propane you could heat water on demand regardless of where you were.
If that is not your goal then I would replace what you have. To supply instant hot water to any single water application like a shower sink or a faucet heaters with special mechanisms have been designed which are called point of use tankless water heaters. They are specifically installed exactly near the appliance such as under the sink or close to the fixture where you need hot water.
Because tankless water heaters heat the water as they go two or more areas using water will reduce the flow rate at which the water comes out. RV Tankless Units Smaller on-demand hot water systems for RVs or other areas with smaller water needs are called point-of-use tankless heaters. Shop read reviews or ask questions about EEMAX Electric Tankless Water Heater at the official West Marine online store.
Since 1968 West Marine has grown to over 250 local stores with knowledgeable Associates happy to assist. Shop with confidence - get free. As an investment tankless water heaters are terrible.
You could probably buy 3 tank water heaters for the same price. They do not leak heat into the hot water pipes in the house so the water may or may not be warm in the pipe depending on how long it has been since you last used it. If its 120V and 20 amps maximum which is a common in RVs food trucks boats and outdoor bars then anyevery tankless water heater will heat your IWT by about 33F at a flow rate of 05 GPM.
And if your sink flows faster than 05 GPM then the IWT increase will be proportionately less than 33F. A true tankless water heater has a very high amperage power requirement and unless youre planning to rewire to a 220 V system the smaller 110 V systems often require more than 30 A of service. A quick look found most tankless units require more than 3000 W.
But Id be very interested if you can find something with a lower power requirement. Ecosmart POU 35 Point of Use Electric Tankless Water Heater 35KW120-Volt 7 x 11 x 3. Can provide hot water for one sink at 05 GPM in warmer climates.
Requires 1 x 30 amp breaker and 10 AWG wire. For one sink at 05 GPM in colder climates the POU 6 is recommended. Amperage Draw 29 amp.
KW - 35 kW. This ensures that the flow goes out the pipe and not back into the boat. For the unit itself you needed about four inches of clearance on the side and eight above.
There needed to be an air supply about 20 sq inches. While tankless units are lots better now the. Tankless Water Heater GASLAND Outdoors 6L 158GPM Camping Gas Water Heater Instant Propane Water Heater Overheating Protection Easy to Install Use for RV Cabin Barn Camping Boat 16999 169.
Tankless Water Heater GASLAND Outdoors BE158B 158GPM 6L Portable Gas Water Heater Instant Propane Water Heater Overheating Protection Easy to Install Use for RV Cabin Barn Camping Boat Black CSA Approved Safety CSA approved Gasland tankless water heater safe as per Canadian and US Standard. Functional 120v Tankless Water Heater Sio Green IR30 POU Electric Heater. This model proves to be the most functional instant water heater within 200.
It is 4 level available from level 1 to 4. Adjusting the current amp from 5 to 30 you can get power from 1kw to 34kw fitting any home appliance. Tankless hot water heaters A 50 gal 5 year water heater will cost 120000 installed.
Tankless water heaters have been lasting 25 years on average. Your homes plumbing makes up 40 of its value on average. Add in a re-circ system and youll save thousand of gallons of water also.
The iHeat S electric tankless water heater is the perfect shipmate for boating enthusiasts that require hot water on demand. The iHeat AGL-5 is a portable liquid propane fired water heater capable of delivering 1 to 14 gallons of hot water almost anywhere.