Precision Temp RV 550 NSP Water Heater


A high efficiency heater vented through the floor with a 2" exhaust pipe. VariFlame Control technology produces up to 55,000 BTUs.

Precision Temp RV 550 NSP Water Heater

The RV 550 NSP comes with all of the features of the RV 550, but vented through the floor with a 2" exhaust pipe. It is high efficiency heater that utilizes the VariFlame Control technology, and can produce up to 55,000 BTUs.



  1. Hot water tap is turned on
  2. Flow sensor detects flow of cold water coming in
  3. The burner is automatically ignited
  4. Water is intantly heated up as it circulates through the heat exchanger and out the tap


  • Never run out of hot water again!
  • Designed specifically for RVs
  • The standard RV-550 takes up half the space and weighs one third as much as a ten-gallon tank. The 550-NSP is even smaller and lighter, and is vented through a 2” exhaust pipe in the floor.
  • No pilot light and very high efficiency
  • Straightforward installation
  • Reliable, proven VariFlame technology control system
  • To winterize, just open a valve and it drains in seconds. There is no need for a bypass kit. Or you can add antifreeze, but don’t buy extra—it holds less than a pint.

Type: Tankless propane-fired water heater with full gas modulation. Vented through floor and cold weather protection.

Dimensions: 13.5″ wide x 13.5″ deep x 14.25″ high

Weight: 26.5 pounds

Capacity: 55,000 BTUs max input (88°F temperature rise / gal / minute)
16,000 BTUs min input (26°F temperature rise / gal / minute)

Venting: Through the floor by 2″ exhaust pipe, power vented.

Construction: Galvanized case.
Head exchanger: Solid copper.
Gas train: Stainless flame strips with aluminized steel bodies.

Fuel: Propane

Water Temperature: Infinitely adjustable.

Controls: Gas modulation valve assembly initiates spark ignition and varies gas input based on water flow rate, controlling water outlet temperature.

Safety Features: Pilotless ignition, completely dormant until water flow is initiated.
ECO high temperature limit switch.
Instant flame-proofing by flame rectification.Pressure relief valve.
Certified to ANSI Z21.10.3 / CSA 4.3 Standards

Due to continuous product improvement, PrecisionTemp reserves the right to change specifications at any time.

Ships from: Cincinnati, OH..

Ships within: 1-6 Business Days.

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