Tried the Blue Flame, will be looking at another way to heat

EsoxLucius wrote:
Hmm... Still less efficient than a Vented Platinum Cat.

Not when taking into account the PlatCat uses room air for combustion. The Promex combustion/exhaust is totally sealed and separate from the room air.

EsoxLucius wrote:
Hmm... Still less efficient than a Vented Platinum Cat.

Or perhaps just "less efficient" than the Plat Cat claims to be.

I've never found any evidence that any of the claims made on the Plat Cat website have ever been tested/certified by any independent agency.

The Propex, on the other hand, conforms to European standards of testing/certification and any claims it makes are subject to substantiation by appropriate certification authorities.

Propex wrote:
Heatsource blown air heaters conform to the latest European standards for both the appliance and the electronics and during the rigorous testing the focus is very much on safety. The heaters also have to comply with an enhanced version of the Electro Mechanical Compatibility Directive to ensure they do not interfere with other electronics and that they are immune from interference by other electronics.

Source of quote

Hmm... Still less efficient than a Vented Platinum Cat.

I found an interesting LPG fueled heater called Propex and is made in the UK.

It uses outside combustion air and vents the exhaust outside just like your original equipment furnace.

However, compared to your 80% efficient furnace it claims to be 93% efficient. The fan uses less than 2 amps compared to your RV furnace which uses 7 amps and up.

Propex heater;
http://www.propexheatsource.co.uk/heaters/hs2800#efficiency

One of about 6 USA distributors;
http://westyventures.com/propex.html

MrWizard wrote:
One battery is Not Enough for any RV today, except for the minimalist that uses it as a hard sided tent

I have meet people living in vans that have two or more house batteries

One battery is enough IF you have a way to charge daily be it solar or generator. The smallest Honda will do the job nicely. But more is better if you have room for a second battery. I don't but we have gotten along fine with one for 12 years.

One battery is Not Enough for any RV today, except for the minimalist that uses it as a hard sided tent

I have meet people living in vans that have two or more house batteries

SuzzeeeQ2012 wrote:
in regards to using my CPAP with any thing else that takes 12V......


now to figure out if THIS is true. So confusing sometimes. Not that the Webasto Duo Top Evo is a ducted furnace, but it does take 12V...

12 v. power usage: All ducted furnaces depend on a 12v. fan to circulate hot air. The fan in my first RV drew 7 amps from the battery. Another RVer with a bigger rig and a higher output furnace reports that his unit draws 11 amps. On a cold night when the fan may run for many hours, this load, combined with other typical 12 v. power uses, may completely discharge a typical battery in a single night, if the RV is not connected to shore power.

My two 8D AGM batteries handle that problem just fine.:W But I admit that I did have that problem with my first two coaches. And it wasn't fun. And its exhaust is ducted.

6P12
BTU Input 5200
BTU Output 5000-5119
96%-98% efficient

Source: Arnie Lind

in regards to using my CPAP with any thing else that takes 12V......


now to figure out if THIS is true. So confusing sometimes. Not that the Webasto Duo Top Evo is a ducted furnace, but it does take 12V...

12 v. power usage: All ducted furnaces depend on a 12v. fan to circulate hot air. The fan in my first RV drew 7 amps from the battery. Another RVer with a bigger rig and a higher output furnace reports that his unit draws 11 amps. On a cold night when the fan may run for many hours, this load, combined with other typical 12 v. power uses, may completely discharge a typical battery in a single night, if the RV is not connected to shore power.

*sigh*


$1,687.06 for this one "AIR TOP EVO3900 12V DIESEL" not the same but gives me an idea.


it's either spend a lot of money, or get rid of dangerous (in my mind, anyway) unvented heaters.

it would be great to get more space in the RV and not worry about propane tanks.

now, to figure out if it's worth it.