VEVOR TM-RV03-2 RV Tankless Water Heater: features, fit and specs

The VEVOR TM-RV03-2 is a gas-fired tankless water heater designed to replace an existing RV unit. Instead of storing and keeping a tank of water hot, it heats water as it flows, which suits showers and washing up on the road. This page covers what its specifications mean and what to confirm for your own vehicle.

How a tankless RV heater works

A tankless, or on-demand, heater switches on when a tap opens. Gas burns in a combustion chamber and a heat exchanger warms the water passing through it. Because there is no tank to refill and reheat, hot water typically keeps coming for as long as the tap is open, which helps in a small RV with limited space. It does depend on water flow and a supply of gas, so heating performance varies with both.

What 55,000 BTU means

BTU measures heat output. VEVOR rates this unit at 55,000 BTU, which it says delivers hot water quickly for showering and dishwashing. In general, a higher BTU number means the heater can raise a given amount of water by more degrees per minute, but the real temperature rise also depends on the flow rate and the incoming water temperature. Cold-weather camping typically asks more of any heater.

Seasonal temperature control

VEVOR describes "segmented combustion technology", which it says adjusts output to the season. The brand explains that this keeps water from getting excessively hot in summer and aims for comfortable hot water year-round. In practice, that means the burner modulates rather than running at full power at all times.

Controls: remote and touch display

The unit has an LED display with touch controls for temperature and power, and comes with a remote controller. This lets you adjust the temperature without opening the access door. The listing doesn't say how far the remote reaches or what powers it, so check the manual.

Cooling and exhaust

VEVOR says a high-performance fan expels exhaust gases outside and helps cool the unit, extending its working life. A fan means the heater needs a 12-volt supply for operation, as most RV heaters do. Check the manual for the exact electrical requirement. The listing gives a φ2.36 inch exhaust pipe size.

Size and fit

The listing says the heater suits "most RVs". The door measures 15 x 15 inches, the rear chamber is 12.6 x 12.6 x 14 inches, and the water and gas connections are 1/2-inch NPT. The unit weighs 25.8 lb (about 11.7 kg). A replacement needs to match the opening in the RV wall, the depth behind it and the existing plumbing. Adapters may be needed if your current heater uses a different layout.

Certification and installation

The listing says the heater is CSA certified and has multiple protection features. Gas appliances should be installed by a qualified person and in line with local codes and the manufacturer's manual. Follow the instructions on ventilation, gas connections and leak checks, and never bypass the safety features.

Who it suits

It suits RV owners replacing an older heater, or those who want on-demand hot water in a camper where cutting out a tank is attractive. People who spend time in different climates may value the season-based temperature adjustment.

What to check before you buy

• Opening size: measure your wall cut-out against the 15 x 15 inch door and chamber depth.
• Connections: confirm 1/2-inch NPT water and gas fittings and the exhaust pipe size.
• Fuel: check the gas type the unit is set up for, which the listing doesn't state.
• Power: confirm the 12-volt supply and fuse arrangements.
• Installation: plan for professional fitting and a gas leak check.

The short version

• A 55,000 BTU gas tankless water heater for RVs from VEVOR.
• 15 x 15 inch door, 1/2-inch NPT water and gas connectors, 2.36-inch exhaust.
• LED touch display plus remote controller.
• CSA certified, according to VEVOR; follow local codes and the manual.
• About 25.8 lb.

Bloiq is reader-supported. Some links may earn us a commission; it never affects what we write. How we make money.