happybuy diesel air heater

[chessie4905]

They are so small, easy to add a couple in a coach. Better get the bigger ones though. If adding to mine, it'll be a supplement to the Suburban. Original owner of mine had set up for all electric with toe kick heaters. I think he was planning to add a furnace later. Vents and air returns were kept, just the hvac was ripped out except front defroster and heater.

[windtrader]

The skoolie crowd are deep into these various chinese knock-off heaters.

Good point to raise about our sister nuts. I'd bet the skoolie crowd has many similar ideas and experiences that we could add to our base of solution options.


I'm not willing to go as far as a compost toilet though. LOL

[sledhead]

as boilers go I replaced my aqua crap with a proheet 45 ( 45000 btu ) and the system I have now is light years above the aqua crap on how it heats up water and heat as well . the proheat 45 was $ 2800 so not that cheap but tons less that the replacement aqua crap I had . the best part is it always works every time !!!!!!!

sorry yes 45,000 btu

dave

[luvrbus]

Dave you have a typo the Pro /heat is 45,000 btu ,with the new Aqua hot and Oasis units topping out about 20 grand most busnuts need a little cheaper system to stay warm.My Aqua/Hot ll has never missed a lick yet .The floor heat is something I really like it keeps us nice and warm with out any noise,the draw back is you need to be plugged in to a pole 

[sledhead]

yes the infloor heat is awesome I had that in the M C I and have that a home and at the shop . but because when driving ( free heat ) the M C I ,  I would let the floor get nice and hot and was always warm on the feet

thanks for the typo correct

dave 

[Iceni John]

I bought two of the Warmtoo metal-case "8kW" CDHs and have installed one for the bedroom.   The larger size is often sold as a 8kW, but they're actually a 5kW that's turned up slightly.   The small and large size CDHs are identical to the equivalent Eberspacher/Webasto D2 and D4 heaters, so all internal parts except the motherboard and controller interchange.   Where are all Eberspacher/Webasto diesel air heaters made these days?   (Hint  -  Germany is not the correct answer!)   For slightly more money than the regular CDHs one can buy a Lavaner which is essentially the same quality as the German brands.   I retuned my heater by changing the pump's Hertz and the fan speed, and now it burns completely cleanly, leaving absolutely no trace of carbon in the exhaust pipe.   Spare parts are readily available from AliExpress and other suppliers, so there's no reason that a CDH won't work as well and last as long as an Eberspacher/Webasto.   For less than $150 each for mine, I'm happy.   And yes, I have a CO detector/alarm above the heater, but I think mine is now burning very cleanly so I'm not worried about any CO from it.   So far, so good.

John

[Dave5Cs]

Have been working for two days on our Suburban sf 35 furnace. When it worked it was nice but ate a lot of LP0. Had to replace the board, sail switch, pressure switch, Adjust the igniter take out and check the burner for holes. There were not any. Once I adjusted the lance it fired right up again. Should be good for another 3 years.
But am thinking of getting two of the air heaters that run on diesel with listening to Scott and Dan they don't use much fuel in them and they take up very little space. I like redundancy. We use electric space heaters but this week on Saturday the temps go down to the 30's and want to be ready, been in the 40's and high 30's this last week.

[luvrbus]

Have been working for two days on our Suburban sf 35 furnace. When it worked it was nice but ate a lot of LP0. Had to replace the board, sail switch, pressure switch, Adjust the igniter take out and check the burner for holes. There were not any. Once I adjusted the lance it fired right up again. Should be good for another 3 years.
But am thinking of getting two of the air heaters that run on diesel with listening to Scott and Dan they don't use much fuel in them and they take up very little space. I like redundancy. We use electric space heaters but this week on Saturday the temps go down to the 30's and want to be ready, been in the 40's and high 30's this last week.

The wind and ice are just around the corner in Kanas Dave you better buy 4 of those 

[chessie4905]

Busnit's post with referral to Facebook site: Chinese diesel air heaters was great thanks! I found three sites and started reading posts on it yesterday. All the info you need is right there. I did notice that there were some very crude and unsafe installations too. Others called them out on it and all the information is just what is needed to be confident in a purchase. Amazing that some controllers even issue trouble codes when something is wrong. If you have any interest in them, have a look.
Look up kw to btu equivalent for output. Seem to be available in 2,3,5,7,or8 kw. Available from Amazon and Ebay and Alixpress, although their shipping is a killer any more on hefty items, unless listed as free shipping. Careful on choosing which model. Some came with cheaper controller than illustrated. Some similar models have subtle differences in whats supplied, but still a great deal for the money. I'll  probably get a couple and run them to heat the shop and verify they are working fine in return window.

[luvrbus]

I bought two of the Warmtoo metal-case "8kW" CDHs and have installed one for the bedroom.   The larger size is often sold as a 8kW, but they're actually a 5kW that's turned up slightly.   The small and large size CDHs are identical to the equivalent Eberspacher/Webasto D2 and D4 heaters, so all internal parts except the motherboard and controller interchange.   Where are all Eberspacher/Webasto diesel air heaters made these days?   (Hint  -  Germany is not the correct answer!)   For slightly more money than the regular CDHs one can buy a Lavaner which is essentially the same quality as the German brands.   I retuned my heater by changing the pump's Hertz and the fan speed, and now it burns completely cleanly, leaving absolutely no trace of carbon in the exhaust pipe.   Spare parts are readily available from AliExpress and other suppliers, so there's no reason that a CDH won't work as well and last as long as an Eberspacher/Webasto.   For less than $150 each for mine, I'm happy.   And yes, I have a CO detector/alarm above the heater, but I think mine is now burning very cleanly so I'm not worried about any CO from it.   So far, so good.

John

I don't think they are the same as Espar or Webasto or they would have the marine and UL rating

[dtcerrato]

Just pulled the trigger on two more cdh with the metal case.
Iceni John could you share your retune notes/info on your heater, would really like to do the same.
We have four heaters in all from Warmtoo & Vevor. Got these two for $122 each! They are awesome products.

[BusNit]

Let me add to the Facebook site that before you just plop your money on any CDH, go for the Lavaner brand. It is a much better made Chinese knockoff that has a great following. There is also no such thing as a 8kw heater. They all work by pump pulse and the largest pump made can only pulse enough fuel to create 5kw of heat. There is a normal "Knocking or ticking" sound with these since they do not work like a normal fuel pump but instead they use a solenoid that pulses fuel as "squirts" through the fuel line. The rubber fuel pump clampdown is a piece of garbage and will just rot and let the metal bodied pump dangle. Replace the stock chinese rubber fuel pump mount with a decent eberspacher one. These are great heaters and as a former skoolie bus builder, I wholeheartedly recommend them.

Another tip is that these do not turn on and off via thermostat but instead just reduce the fuel burn. The heat is intense and with two would do pretty darn good if and only if you have a well insulated bus.

[Iceni John]

Iceni John could you share your retune notes/info on your heater, would really like to do the same.

Here are some simplified and understandable instructions for most CDHs' controllers:  http://www.exploreoz.net/Diesel_Air_Heater_Install/controller.htm
My magic code number is 1688, but not all CDHs use this number.

In order to maintain at least 120C burn chamber temperature, the lowest that's needed for complete combustion, I had to slightly boost the fuel pump's minimum Hz and also increase the fan speed for a clean burn.   Now on idle it burns with all 6 bars lit on the controller, even at a few thousand feet altitude.   My new settings are 1.5 to 5.0 Hz and 1750 to 4300 RPM, and this seems to work very well with the 0.022ml pump that the larger CDHs use.   I like the tunability of these heaters and their basic simplicity, and with my stock of spares such as glow pins and gaskets I have no worry about them ever not working well for a long time.

John

[dtcerrato]

John thanks! Good readings & links within.

[luvrbus]

Those heaters all look the same ,Chinese are famous for the old peel and stick labels one manufacture and 20 different brands.I have been around the Russian made air heaters and they were pretty bad lol but they look just like the Chinese made