Good Sam Club Open Roads Forum: Furrion Instant Hot Water in Cold Weather
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 > Furrion Instant Hot Water in Cold Weather

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TurnThePage

North ID

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Posted: 01/21/22 11:56am Link  |  Quote  |  Print  |  Notify Moderator

I've been couch surfing various new RVs. Grand Design has switched some units to tankless instant hot water heaters. It appears that they are required to be winterized and NOT used in sub 39F conditions. That's crazy!!

I would consider that a show stopper and would likely purchase a different brand. Is anybody familiar with this stuff? Can you retrofit a good old 6 gallon water heater in? Maybe switch to a different tankless brand?

I'm just trying to learn as I near that next big purchase.


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pianotuna

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Posted: 01/21/22 12:27pm Link  |  Quote  |  Print  |  Notify Moderator

That would be useless to me.


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dedmiston

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Posted: 01/21/22 01:59pm Link  |  Quote  |  Print  |  Notify Moderator

Who knew that 39° is "too cold"?

I agree that swapping out a conventional tank heater with LP would be the way to go. Do the tankless ones have a vent panel to the outside that would fit a traditional heater?

You didn't say whether you wanted to use electric or LP for the tank heater. Ours has both, but the electric never gets as hot for us as the LP.


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TurnThePage

North ID

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Posted: 01/21/22 02:29pm Link  |  Quote  |  Print  |  Notify Moderator

I'm pretty easy. LP or electric. I would prefer one that does both. Looking on line, I wasn't very sure of the panel size. I guess if there's room inside, it might be easy enough to enlarge it.

Lwiddis

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Posted: 01/21/22 02:49pm Link  |  Quote  |  Print  |  Notify Moderator

Sub 39F? Wow, lots of camping in and around 39F.


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ScottG

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Posted: 01/21/22 07:23pm Link  |  Quote  |  Print  |  Notify Moderator

My buddy bought a big GD trailer at the end of last season so hasn't been able to camp in it yet. It has the Furion tankless WH so next season will be interesting.
The trailer itself has less than stellar build quality and engineering. It has two leaks (so far), large holes in the bottom corners of the three slides (in or out) and common things missing like a porch light. Every time he shuts the door the whole side of the trailer jiggles and he's having a heck of a time getting GD to send him the missing bits and pieces he found during the PDI. Factory and dealer (Halterman RV) support is dismal. There are numerous shortcuts they took building this rig. - stuff you don't notice until you get it home.
This co. is not what it used to be and I would seriously reconsider before buying this brand.

wa8yxm

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Posted: 01/22/22 05:37am Link  |  Quote  |  Print  |  Notify Moderator

The problem that I see with the tankless is not 39 but 32 39 is a safety buffer.. They hold a small amount of water... and can be damaged if it freezes.

now an Atwood or Suburban tank type. if it's 10 below zero the burner keeps the water HOT, and liquid (so long as it is turned on) and contrary to the myth hot water does not freeze at all (it has to get cold first) (The myth is it freezes faster.. NO IT DOES NOT) so so long as the water heater is operating it can not freeze. but the Tankless.. Can so you need to keep them above freezing.

There are ways to do this .


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wanderingaimlessly

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Posted: 01/22/22 07:07am Link  |  Quote  |  Print  |  Notify Moderator

Tankless water heaters by design have a limited amount of time to warm water. the heating unit only hold a quart or so of water, so water passing through it is only in the heating coils for about 20 seconds for a faucet discharging less than a gallon a minute. Usually they warm the water about 50 degrees by design at their designed flow rate.
If the incoming water is 70 degrees, then it heats to 120 which is fine, but if the incoming water is 40, then the warmed water only has time to reach 90, which is lukewarm at best.

rhagfo

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Posted: 01/22/22 07:29am Link  |  Quote  |  Print  |  Notify Moderator

wanderingaimlessly wrote:

Tankless water heaters by design have a limited amount of time to warm water. the heating unit only hold a quart or so of water, so water passing through it is only in the heating coils for about 20 seconds for a faucet discharging less than a gallon a minute. Usually they warm the water about 50 degrees by design at their designed flow rate.
If the incoming water is 70 degrees, then it heats to 120 which is fine, but if the incoming water is 40, then the warmed water only has time to reach 90, which is lukewarm at best.


I agree that this is the limiting factor at 39 degrees. When we are in cold weather 40 degrees to high teens, even with heated water hose the cold water at the faucet is COLD!
We full time, we cook with gas, including using the oven, and broiler, and heat hot water with gas, we also have the electric element on, which helps maintain the water hot. We heat with electricity (RV Comfort Systems "Cheap Heat")and refer is using electricity. We use about one 30# tank of propane a month.
We have a 10 gallon, and we can take showers one after another and both normally have plenty of hot water.


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IB853347201

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Posted: 01/22/22 07:49am Link  |  Quote  |  Print  |  Notify Moderator

ScottG wrote:

My buddy bought a big GD trailer at the end of last season so hasn't been able to camp in it yet. It has the Furion tankless WH so next season will be interesting.
The trailer itself has less than stellar build quality and engineering. It has two leaks (so far), large holes in the bottom corners of the three slides (in or out) and common things missing like a porch light. Every time he shuts the door the whole side of the trailer jiggles and he's having a heck of a time getting GD to send him the missing bits and pieces he found during the PDI. Factory and dealer (Halterman RV) support is dismal. There are numerous shortcuts they took building this rig. - stuff you don't notice until you get it home.
This co. is not what it used to be and I would seriously reconsider before buying this brand.
Hmm, your Buddy's experience is perplexing and contrary to ours. We spent 4 months camping in a 2021 GD Imagine 30 and it was one of the best built TT's we have ever had. Odd....


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