cabin heaters, Espar, Wabasto, Wallas... vs Force10

Mar 20, 2012
3,983
Cal 34-III, MacGregor 25 Salem, Oregon
our boat had a force 10 propane heater installed when we bought it... it has worked fine for us this past year until a couple of weeks ago...

we took the boat up the river 30miles to bonneville dam... in the Gorge we encountered head winds of 45-50mph with gusts to almost 60 and the air temperature was around 40degrees, and after dark it dropped to 34. (the experience of it all is a whole 'nother story that i wont go into here, but it was fun and enlightening)

we have been at the dock in moderate winds with two space heaters running on medium in 29-30 degree weather, and been comfortable, as long as we had a fan running to keep the heat from accumulating at the roof... this is without using the force 10

even though the boat is air and water tight except for the companion way, we found that the force 10 is not enough heater for overnighting away from the dock with strong cold winds.... (we tied to a dock near bonneville, NOT on the anchor, due to the extreme winds).

so even though I think the force 10 heater may be adequate for real hearty sailors, and/or most weekenders who dont use their boats much away from the dock during the colder months, my wife has made it clear that we dont fall into that catagory, and has convinced me that it is NOT a good enough heater for her during the cold weather of the winter months on our boat.

the extreme weather doesnt slow either of us down, but unlike me, she needs to be warm to have any fun out there...

so after using the boat for one and a half winters, almost always on the hook somewhere,
I have decided on upgrading the heating system with something better than the propane heater.
I have been researching espar, wabasto and Wallas....all of them being forced air diesel heaters. (there are other names out there, but when it comes to boats, fires, and potential explosions or CO poisoning, I want to stick with a top brand marine heater to supply me with all the risks:D)

I havent found too much bad to say about any of them on the internet, other than the need for servicing, and when repairs were necessary, the expense of the repairs on the espar and wabasto can be extreme. although for the most part, they are good dependable units.

I have had some experience with Webasto in the past and know they are good units, and I also found out its sometimes cheaper to buy another heater than it is to buy the replacement parts for the unit you already have...

Espar it is said can be a bit power(amps) hungry... but their customer service seems good.

Then there is the Wallas that I am considering...

the 30Dt at 12,500btu's has a bit more than twice as much output over what the force 10 propane unit is advertised as having.
it has easiest installation of any of the 3 units(espar, webasto, wallas)....
it has the least power consumption over a 24hr period, by a large margine...
it is the quietest of the three while running...
the kit has everything necessary for a full installation with thermostatic style controller included.

of all the sites ive seen and read, there are cases where both espar and webasto units have been replace by a wallas unit, and the owners were completley satisfied with the results, but ive never seen or read where the wallas heater was ever replaced with either a espar or webasto.... as in maybe the wallas heaters dont need replacing?

is there anyone here, in the northern climates that have experience with a wallas forced air heater that want to share their experience with it?....
or the webasto or espar?...



about the Force 10 unit... maybe a bit of a rant:D

the down side to the force 10 unit is that it has a low oxygen shutdown sensor. when this senses a 2% drop in oxygen, it shuts the unit OFF..... no more heat. not now, not in 10 minutes, or not in an hour, or even 2... you cant open all the hatches and ports, or place a fan on it to get the sensor to reset. the unit will reset in about 3 hours and only when it becomes so cold that you NEED heat.... but by then the cabin has cooled off so much it takes a long time to heat back up...
the SOLUTION to the cold problem is to fire up the stove top or oven... BUT as this helps solve the cold problem, it doesnt solve the low oxygen problem and only adds to it, so this is defeating the sense and purpose of having the oxygen depletion sensor on the force 10.

I purchased a new base unit in hopes that maybe it was a faulty O2 sensor in my valve, but the new base unit acted the same way.... Dickinson has an excellent return policy and they took the base back without any further questions after i explained to them why i didnt want it...
so its kind of a catch 22.... what is the point in having a heater that will shut off when the O2 levels get low, and you have to light the big stove with no sensors on it just to stay warm?.... or at the very least, have the hatch open so the oxygen can replenish itself while the heat escapes...

I believe in reasonable safety at all costs, but the force 10 propane unit is a contradiction of itself... its a heater that is so safe that it cant run safely in an area that is small enough to be heated by it, without shutting itself down because it thinks there is not enough oxygen in that small space.

I have been over this with Dickinson and they agree, but the force 10 was designed by Sig marine, not by them...

BUT.... Dickinson does have a trade in program for anyone who owns a force 10 to upgrade to the newer style "direct vent" furnace for about a $200 credit... I looked at the P12000.
trade in your old unit and get 50% off of list price of a new unit.

the new units have an enclosed firebox (with a large window) and are equipped with a blower fan for better heat distribution... all flue parts, backing plate and mounting hardware is included with it.

for me, I want more heat overall so im going with a forced air diesel unit... it is almost 6 times the cost, but there is no sense in being cold just because i want to use the boat away from the shorepower cord in the winter time....
 
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Dec 25, 2000
5,863
Hunter Passage 42 Shelter Bay, WA
Boat Heating

Hi Lou, I wrote the article below awhile ago; a few years. We sail year around and like your wife, mine insists that warmth is at the top of her list especially this time of the year.

Our first boat, an H28, came with a Wallas forced air kerosene heater model 1400. Used it a little but was very impressed. Easy to operate, thrifty on fuel and power and kept the interior warm.

When we upgraded to our current boat it did not have a furnace, just heat pumps, okay if your connected to shore power, but not so on the hook. My boating buddy spoke highly of his Wallas 30D for his Freedom 32.

Over the years we have found our Wallas 40D to be very reliable, simple to operate, quiet and also thrifty on fuel and power. I installed the unit myself with mostly basic tools. We have been out during winter temps in the mid 20s with ice and snow on the deck and have been comfortable inside.

=========

I finished installing a Wallas 40D diesel furnace in our P42. The unit is installed in the port side stern main deck locker, mounted on the magazine cabinet bulkhead. Seemed to be the best place considering it was close to the stern and the fuel tank, plus it can draw intake air through the opening into the quadrant well that also supplies air to the heat pump. I surface mounted the control panel on the aft cabin port side bulkhead just below and to the left side of the magazine cabinet. I used a three inch hole saw for the registers and a three and one quarter inch hole saw for the ducting.

Everything is connected: fuel, power, control panel, exhaust pipe and warm air ducting and registers. The dealer advised to install the system before ordering the exhaust pipe and sock because of its high cost. One duct and two registers are located in the aft cabin at the base of the double berth, with another duct with two registers in the main cabin port side setee. Since we do not plan on installing a washer/dryer combo I'm going to use the engine compartment vent duct route for part of the warm air ducting.

One duct runs behind the rudder post to registers located at the base of the berthing cabinet port and starboard side. This has worked out pretty well because I can direct heat into the aft head. I installed two registers at the base of the port setee and one under the navigation station.

The new furnace has made a huge difference in cabin comfort for the admiral while on the hook. The system is quiet, efficient and really pumps out the heat. Cold weather comfort should make a big difference during winter cruising.

11/2014 Update: Installed the Wallas 40D diesel furnace in March 2006. Have not touched the unit since then, but have used it many times to keep the interior warm during our winter cruises. Simple to operate, thrifty fuel and power consumption and quiet. Unless there is below freezing temperatures outside, a middle thermostat temperature setting is sufficient.
 
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Les

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May 8, 2004
375
Hunter 27 Bellingham, WA
I have had many variables in heating my boats from a bulkhead fireplace which constantly smoked us out into the cockpit to a Taylor (British made) bulkhead kerosene, moving on to a Force 10 Kerosene bulkhead heater. I liked this one but my wife said she could also smell the kerosene even when I bought lamp fluid. In my last five boats I have used Webasto heaters, the first was hot water but the latter have been all hot air.

At present I am using the smallest Webasto in my H27 with an outlet in the aft cabin, an outlet in the head and an outlet in the main cabin. I am impressed with the low electrical draw and even lower demand on the fuel. It is quiet although I did put on a muffler so that the exhaust would be quiet but I am told the new units do not need this attachment.

When I turn on the thermostat it takes about twenty minutes to bring the boat up to about sixty five degrees and it blows air around so there are no hot spots... I do leave a hatch open a crack in the aft cabin even when I heat the boat. I am really impressed with the Webasto heaters.

That being said I really have no experience with Espar or Wallas. I suspect they work well. But I would stay away from anything that deals with alcohol. We once bought a heat pail and it produced so much moister in the cabin that we were constantly wiping the bulkheads down.

Sure Marine in Seattle is a great place to get advice on heating and they sell several different units and are experienced with them. Webasto now makes a DIY box for different sized boats--you might want to look into that one.

I'm like you--I like a warm boat when I'm done sailing. I generally go down to my boat about twice a week, turn the thermostat up, make my coffee or tea and read. And nap. I'm good at napping on a warm boat.
 
Jan 25, 2011
2,430
S2 11.0A Anacortes, WA
Come up to the Seattle boat show next month and u can talk to all three. Boat Electric had the monopoly on Espar but I heard they're now defunct. I don't recall who now has Espar but I'm sure they'll be there. I think I'm going to to do the same thing... I have an OLD Espar that evidently has some motor bearing problem but it refuses to die...Wonder why Boat Electric Sunk?..
 

BJV

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Jun 8, 2004
61
Island Trader 41 foot Ketch, CC Arnold
We have a dickerson newport diesel heater and love it. Only hastle is its not instant on.
other option is heat pump ac, these typically will work until water temp drops into 40s giving a dry heat. Downside of course is they consump lots of power.
 
Nov 22, 2008
3,562
Endeavour 32 Portland, Maine
We have a dickerson newport diesel heater and love it.
A big second to that. If you want to be warm, there is nothing like having something Hot in the cabin. Warming just the air as Espar type heaters do is a completely different kind of heat.

I have hardly ever had to use the fan on the Newport so it is silent except for the kind of quiet sounds you might get from a fireplace. The flickering light makes the cabin cheery in much the same way. There is something about being able to see flame that can't be matched. It even comforts me when I am standing outside at the wheel in the cold and wet looking through the companionway.

The diesel heater isn't instant on but I run mine 24 hours a day in cool weather. The atmosphere in the cabin with the heater going and lots of ports open to control the temperature is wonderful.
 
Mar 20, 2012
3,983
Cal 34-III, MacGregor 25 Salem, Oregon
We have a dickerson newport diesel heater and love it. Only hastle is its not instant on.
other option is heat pump ac, these typically will work until water temp drops into 40s giving a dry heat. Downside of course is they consump lots of power.
i have a Dickinson newport diesel heater in my ATV trailer... i love the heat output, but as for "consuming lots of power", I dont understand this statement....
because the Newport diesel heater has a fan that is only supposed to be used to help the flue draft when starting it, a .02amp fan.... after 30 minutes it gets sht off and there is no more power consumption until it needs to be lit again..... and even than the fan is not necessary, but creates a bit quicker start up/output time....

the heat output from it is TREMENDOUS.... on the higher settings, the firebox will glow cheery red... extremely HOT.... and with a fan blowing over it, it would heat a very large boat..... it can be regulated to maintain a normal output.
the down side is, they are meant to be ran for looong periods of time.... many starts and stops and they need servicing very often... because the carbon settles at the bottom of the inlet tube, and impacts it to where the fuel is restricted from entering... so due to the way we currently use our boat, and the higher maintenance that the heater will require due to that, I want a forced air unit that can be stoped and started at the turn of a knob or the flick of a switch, with servicing intervals of 3-4 months....
 
Mar 20, 2012
3,983
Cal 34-III, MacGregor 25 Salem, Oregon
A big second to that. If you want to be warm, there is nothing like having something Hot in the cabin. Warming just the air as Espar type heaters do is a completely different kind of heat.

I have hardly ever had to use the fan on the Newport so it is silent except for the kind of quiet sounds you might get from a fireplace. The flickering light makes the cabin cheery in much the same way. There is something about being able to see flame that can't be matched. It even comforts me when I am standing outside at the wheel in the cold and wet looking through the companionway.

The diesel heater isn't instant on but I run mine 24 hours a day in cool weather. The atmosphere in the cabin with the heater going and lots of ports open to control the temperature is wonderful.
I can only agree.... I have a few years experience with the newport diesel heater, and now im ready to try a different type... just because i can:D
 
Sep 28, 2008
922
Canadian Sailcraft CS27 Victoria B.C.
We have a dickerson newport diesel heater and love it. Only hastle is its not instant on.
other option is heat pump ac, these typically will work until water temp drops into 40s giving a dry heat. Downside of course is they consump lots of power.
The way I read this he says the heat pump AC uses a lot of power - it does. Dickinson diesel heaters do not use much power at all.
 
Mar 20, 2012
3,983
Cal 34-III, MacGregor 25 Salem, Oregon
The way I read this he says the heat pump AC uses a lot of power - it does. Dickinson diesel heaters do not use much power at all.
I think you are right, i misunderstood... :)