This unit heats cabin air and domestic water from one 12V diesel system. It is made by LSZQJ and produces 7000 watts of heat. The body measures 39 x 13.5 x 13.5 cm, so it fits into tight engine bays and van conversions.
The 7Kw air water diesel heater has seven adjustable heat levels and four operating modes, including timed, constant temperature and dual temperature settings. A remote control adjusts settings wirelessly. An LCD screen shows real-time status and fault diagnosis. It runs below 45 decibels and works up to 6000 metres with plateau mode.
Safety features include anti-dry-burn protection, automatic temperature regulation and an overheat alarm at 265 degrees. The box contains the heater host, fuel pump, water pump and installation accessories. It costs £355.00 including VAT and has a 30-day return right.
Air and water heating in one - Most diesel heaters only warm air. This one also heats domestic water through its hydronic circuit. What does that mean in practice? One unit covers cabin warmth and hot water for washing in a campervan, truck or boat. It also heats a caravan water tank and warms an engine before a cold start.
Seven heat levels and four modes - You can pick from seven output levels. The four modes cover timed running, constant temperature and dual temperature settings. Why does this matter? A constant temperature mode lets the heater adjust itself overnight. A fuel saving mode also keeps diesel use down on longer trips.
Quiet running - Noise stays below 45 decibels. That is roughly the level of a quiet room. Is that quiet enough to sleep next to? Most people will find it is, which matters in a van where the heater sits a few feet from the bed. One German buyer described it as very quiet.
LCD screen and remote control - The LCD shows real-time status and fault diagnosis. It also gives troubleshooting solutions, so you do not need to look up error codes. The remote control adjusts settings wirelessly and keeps data synchronised with the unit. You can change the heat without leaving your bed.
Safety protections - Anti-dry-burn protection stops the heater running without fuel or water flow. Automatic temperature regulation prevents it overshooting the target. A high temperature alarm sounds at 265 degrees. The body uses flame-retardant materials. Aviation-grade plug connectors keep the wiring secure on rough roads.
Plateau mode up to 6000 metres - Thinner air at height changes how diesel burns. Plateau mode compensates for this. That lets the heater keep working on mountain roads or high campsites up to 6000 metres. It runs from a 12V battery system, so it suits campervans, trucks, boats and cars.
The 7Kw air water diesel heater does two jobs in one body. It blows warm air into your cabin. It also heats domestic water through its hydronic side. So you get a warm interior and hot water from one unit. The brand lists three uses: cabin heating, caravan water tank heating and engine warm-up. It runs from a 12V battery system.
The listed size is 39 x 13.5 x 13.5 cm. That is a slim body. It is described as small enough for tight engine bays and suits van conversions. Measure your mounting space first. The box also holds a fuel pump and a water pump. Those need room of their own.
You get the host unit, a fuel pump, a water pump and installation accessories. The listing gives no further detail on those accessories. One buyer said the instructions supplied were written for other models. They had to guess a few steps. Check your fittings and wiring plan against the product videos on the listing. One of them is a water system installation guide.
The stated noise level is below 45 decibels. That is roughly the level of a quiet room. It matters for overnight use because the heater runs while you sleep. A German buyer called it very quiet. A US buyer said it is not too loud. These are customer comments and not lab tests.
Yes. The listing names trucks, boats, cars and marine cabins. It can also preheat a diesel or marine engine before a cold start. Garages and workshops are listed as well. Any indoor use needs care though. Diesel heaters need correct exhaust routing and ventilation. Follow the fitting instructions closely.
There are seven adjustable heat levels. It also has four operating modes including timed and constant temperature plus dual temperature settings. A remote control lets you change settings wirelessly with data synchronisation. The LCD screen shows real-time status. It also shows fault diagnosis and troubleshooting steps. That helps when you see an error code and have no idea what it means.
There are three protections listed. Anti-dry-burn protection guards the heater if fuel or liquid runs short. Automatic temperature regulation keeps output in check. A high temperature alarm sounds at 265 degrees. The body uses flame-retardant materials. Wiring uses aviation-grade plug connectors for secure links. Review wording from a French buyer also praised the overheat alarm.
It has a plateau mode and operates up to 6000 metres. Thin air at height can upset diesel burning. This mode is there to deal with that. On returns, Amazon.co.uk gives a 30-day right of return on many products. Exceptions and conditions apply. Read the return details on the listing. The item is a one-time purchase from LSZQJ and ships as a single unit made in China. The listing rates it 4.2 out of 5 from 61 ratings. About 59% of those are five stars. About 10% are one star.
| Brand | LSZQJ |
| Manufacturer | LSZQJ |
| Model number | 7KW Luftheizung Wasserheizung |
| Part number | LSZQJ202606100928 |
| ASIN | B0H4FWQYHP |
| Power source | Diesel |
| Electric | No |
| Wattage | 7000 watts |
| Heat output | 7000 watts (7kW) |
| Voltage | 12 volts |
| Heating types | Air heating and hydronic water heating (domestic water) |
| Heating levels | Seven adjustable levels |
| Operating modes | Timed, constant temperature and dual temperature settings |
| Motor type | Brushless |
| Noise level | Below 45 decibels |
| Maximum altitude | Up to 6000 metres |
| High temperature alarm | 265 degrees |
| Protections | Anti-dry-burn protection and automatic temperature regulation |
| Display | LCD screen (real-time status, fault diagnosis and troubleshooting solutions) |
| Control | Wireless remote control with data synchronisation |
| Connectors | Aviation-grade plug connectors |
| Construction | Flame-retardant materials |
| Material | Plastic |
| Size | 39 x 13.5 x 13.5 cm |
| Colour | Yellow and black |
| Number of items | 1 |
| Included components | Host, fuel pump, water pump and installation accessories |
| Country of origin | China |
