Customer Reviews for 12V 8KW Diesel Air Heater for RV Motorhome Trailer Trucks Boats 8kW + LCD Switch

Hello I finally opened the boxes of these and put them together and it doesn't get any power to it at all

Ficou a trabalhar 8 minutos e parou..... Agora não sei como solicitar a garantia.

Me llego con el tubo de toma de aire exterior desviado asi que no puede montarse bien en la base. Normal supongo en un proceso de fabricacion de productos de bajo precio, el problema es que Vevor i el atencion al cliente se lavan las manos. No sorprende, pero para futuros compradores es algo a tener en cuenta.

Je n’ai pas reçu ma commande je peux pas dire si sa fonctionne bien ou pas

Couldn’t get unit to even power up. Connected to battery just like instructions said and couldn’t even get the monitor to come on. Waste of time and money.

It’s a cheap heater and easy to set up for the price, however, when the temperature drops below 20°F, this thing really really really struggles to start and instead leaks because the fuel pump delivers too much diesel when the unit is trying to heat up.

Can't review a product never got took over 3 weeks n 50 plus emails to get a refund just a heads up dont buy from Vevor cust serv is shit

Ordered another one. Hope it shows. Be nice to have before this huge snowstorm coming in.

I bought it because it was advertised as 8 kW, but in reality it delivers only about 3.5 kW. This was confirmed by Vevor themselves, who admitted the 8 kW claim is mainly a marketing label. Unfortunately, 3.5 kW is not sufficient to heat the space I intended. Here is their response Dear customer, Thank you for being so patient. Kindly note at 0.36 L/h fuel consumption and ~9.8 kWh/L, the heater can only receive about 3.5 kW of chemical energy. With realistic efficiency (80–90%), the actual heat output is ~2.8–3.2 kW, not 8 kW. The advertised “8 kW” for this type of diesel air heater is not a measured thermal output. It is a nominal/marketing rating or size class, often referring to a theoretical maximum or product category rather than real delivered heat. In practice, many low-cost “8 kW” diesel heaters deliver around 3–4 kW of usable heat, which aligns with your energy-balance calculation. Detailed efficiency or standardized test documentation explaining the 8 kW claim is typically not provided for these products. If you have any more questions, please don't hesitate to contact us.

I bought five of these same heaters they are all malfunctioning with the same part vevor has lowered their price I'm pretty sure they know what's going on they're making it almost impossible for me to contact them they haven't contact me back yet I think it's a scam shame on you vivor