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Open Roads Forum  >  Tech Issues

 > Elec. heat v. Gas heat

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rhagfo

Portland, OR

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Posted: 12/25/19 01:02am Link  |  Quote  |  Print  |  Notify Moderator

alaska dennis wrote:

rhagfo wrote:

dougrainer wrote:

Cummins12V98 wrote:

Personally never heard of an AC Heat put being efficient down to 35.

Since you were paying attention. I put the money I would have spent with my three 15k AC's NOT having Heat Pumps and went with "Cheap Heat" option for my furnace. Simple flip of the switch I am on Electric or Propane.

My Penguin AC's would have been about $500 more each with the heat pumps.

NOT cheap but worth every $$$.


You need to broaden your knowledge base[emoticon] I have been a RV Tech for 40 years. I have been installing and working on RV HP's for the past 20 years since they introduced them for RV's. Unless you are consistently below 35 degrees, HP's are much better at Heating your RV. LESS noise and softer heat, than running a 12 volt furnace or the furnace with the 120 add on kit. MOST knowledgable RV'ers will select a HP option for their RV's. I had a HP at my stick home years ago and it worked just fine. I have yet to have a customer tell me that he wished he NEVER had the HP option. I HAVE had numerous customers add or asked to install a HP. Doug


dougrainer wrote:



WOW! What an exchange, a knowledgeable RV tech that thinks you can only tap 120 volts on a 220 volt 50 amp service!
I have never understood heating from the roof, heat strips or Heat Pump, they don't heat the basement.

WHEN did I say this????????????????????????????? Also a 50 amp RV IS 120 VOLTS, NOT 220 VOLTS. While the listing states 240/120 the legs are SEPERATE and only 120 is in the RV. Now, on MILLION dollar units and some HI END 5th wheels they do have a 220 circuit for a dryer or induction type range. But that is very rare. Now to your last statement about Basement. You do not know what you are talking about. YOU DO NOT NEED HEATED BASEMENT ABOVE 32 DEGREES. Once you go below 35 degrees the HP system kicks out and the FURNACE system kicks in and THAT is what heats the Basement when needed. Also Heat Strips are NOT HEAT. They are there to take the chill off and not heat. Doug


Well you implied it in the first post, then stated in your last post. 50 amp RV services are 220 volts and 50 amps. You can tap at main breaker, or install half width double main with a 50/30 rating. My Cheap Heat" as stated before runs at 5,000 watts on a 30 amp 220 volt circuit. If my park feed is only a 30 amp 120 volt service then the furnace steps down to 1,800 watts.
I went to another forum and found this. I think the point is to find out what your input voltage is by measuring between l1/l2 http://www.myrv.us/Imgs/PDF/50-amp%20Service.pdf Boy I hope this all fits.

That is correct, and if installed per NEC the voltage between the two will be 240 volts. You can tap at the main or install at half with 30/50 double pole breaker.
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Cummins12V98

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Posted: 12/25/19 07:46am Link  |  Quote  |  Print  |  Notify Moderator

Looking at my electrical display of L1 and L2 when the CheapHeat is activated the screen shows a 20A increase on each leg.


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pnichols

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Posted: 12/25/19 01:32pm Link  |  Quote  |  Print  |  Notify Moderator

What on Earth ever happened to discussion of these outstanding RV heating options that really have got it right: Propane and 12 powered ... ultra-low 12V power consumption and noise, vented, and hence with no moisture or combustion products into the interior ... combined with just sipping the propane.

These heaters would be especially great for long term drycamping:
http://www.ventedcatheater.com/heaters

(Their design reminds me of the fanless vented propane heater in our 1969 vintage Class C motorhome from years ago.)


Phil, 2005 E450 Itasca Spirit 24V

pianotuna

Regina, SK, Canada

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Posted: 12/25/19 05:17pm Link  |  Quote  |  Print  |  Notify Moderator

Phil,

I love the Platinum Cat!

There are other vented heaters, some of which use zero power. Here is an example:

https://www.gasheaterstore.com/Williams-........--Propane-LP--10-Year-Warranty_p_80.html

[image]

Here is another:

https://www.gasheaterstore.com/Empire-DV........rect-Vent-Propane-Wall-Furnace_p_64.html

* This post was edited 12/25/19 05:23pm by pianotuna *


Regards, Don
My ride is a 28 foot Class C, 256 watts solar, 556 amp hours of AGM in two battery banks 12 volt batteries, 3000 watt Magnum hybrid inverter, Sola Basic Autoformer, Microair Easy Start.

rhagfo

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Posted: 12/25/19 05:34pm Link  |  Quote  |  Print  |  Notify Moderator

pnichols wrote:

What on Earth ever happened to discussion of these outstanding RV heating options that really have got it right: Propane and 12 powered ... ultra-low 12V power consumption and noise, vented, and hence with no moisture or combustion products into the interior ... combined with just sipping the propane.

These heaters would be especially great for long term drycamping:
http://www.ventedcatheater.com/heaters

(Their design reminds me of the fanless vented propane heater in our 1969 vintage Class C motorhome from years ago.)


Well I can think of two reasons;
1. The surface is HOT and can be a source of ignition for flammable materials passes near it.

2. Doesn’t heat the basement or tank area in freezing weather.

You do need to use correct caution when using.

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