Precision Temp RV 550 Tankless Wall Vented Water Heater
The RV-550 tankless, wall vented water heater is best suited for cabins, RVs, and tiny homes. A truly four-season, tankless water heater that requires venting through a side wall.
Hot Water Any Time, Any Season
The PrecisionTemp RV-550 tankless water heater uses the patented VariFlame Control technology to deliver endless hot water to your cabin or tiny home.
Never again will you have to wait for a small water tank to refill or reheat. No more quick or half cold showers. Whether you’re just one person or a whole family, endless hot water is there for you each and every time you need it.
The Proof is in the POWER
With 55,000 BTUs—the highest hot water output in the industry—and built-in freeze protection, the RV-550 delivers on-demand, continuous hot water.
The RV 550 tankless water heater operates only when hot water is turned on, and the VariFlame control system keeps the water temperature constant, regardless of the flow rate or incoming water temperature.
Would you prefer a floor vented model? Check out the Precision Temp RV 550 NSP
More Hot Water. Less Propane.
Up to 50% less propane usage compared to traditional tank water heaters, the 55,000 BTU RV-550 produces more hot water while using less propane.
How Precision Temp RV 550 Water Heater works
Precision Temp RV 550 Features
- Never run out of hot water again!
- Takes up half the space and weighs one-third as much as a ten-gallon tank
- 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.
- Stainless steel construction
Precision Temp RV 550 Specifications
- Type: Tankless propane-fired water heater with full gas modulation. Power-vented sidewall penetration and cold weather protection.
- Dimensions: 13.5″ wide x 13.5″ deep x 14.25″ high
- Weight: 32 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: Power-vented sidewall penetration.
- Construction: Galvanized case with perforated mounting flanges for original equipment or aftermarket sidewall penetration.
- Access door is painted aluminum.
- 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
- Full 2 Year Warranty Included
- Disclaimer: Due to continuous product improvement, PrecisionTemp reserves the right to change specifications at any time.
Installation, Operation & Maintenance Manual for RV 550
Learn more about Precision Temp RV 550
Precision Temp RV 550 Installation
Questions & Answers
Have a Question?
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You show the dimensions of the hot water heater but what is the dimensions of the exterior cover? My hole in the RV is bigger then the hot water heater and I need to know if the cover will cover the rest of the opening.
17.625" high by 18" wide
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Have a 10 gallon subanana hot water tank would it fit in the side opening or would same changes need to be made
I am unsure of that brand and the dimension of it but the rough opening for the wall vent Precision Temp RV550 is 14.25” min. - 16.5” max High, 13.5” min - 17.25” max Wide, 17” min Deep.
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What is the max gallons per minute. and still have good hot water
The 550-EC and 550NSP-EC can raise water temperature 88 degrees per gallon per minute (GPM). Most RV’s and Tiny Homes flow a max of about 1.5 GPM. (Note: If they have a pump the pump with have a flow rate much higher than that, but that is an ‘open flow’ flow rate. Once the water goes through the pipes it will be slower.) At 1.5 GPM a full hot shower (104 – 105) will be had as long as the incoming water temperature is at least 39 degrees. Of course below 33 degrees the water is ice so 39 is extremely low.
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Is this a drop in replacement for the older RV 500? I.e. Fits the same opening in the RV wall and needs no reconfiguration of connections.
The RV 550 Wall Vent is a drop in replacement for the RV 500. It fits into the same opening as the RV-500. The doors on each are different so they are not interchangable. The gas line is in the same spot. The water lines, however, are reversed with the 550 having cold on the bottom on hot on the top. Also the 550 bottom connection (cold) is more centered. Most water lines are flexible so there shouldn't be any issues with connecting them.
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how dose one set the water temp for hotter water
Outlet water temperature can be adjusted by turning the “Summer / Winter” up 1/4 turn. Full vertical is the warmest position and full horizontal is the coolest position.
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What is the water flow requirements for this unit?
The minimum water requirement is .5GPM
Customer Reviews
Based on 13 reviews
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Precision Temp RV 550 Tankless Water Heater - Wall Vent
L
It came in great time and was undamaged! Exactly what I had ordered and fit right in as a replacement! Very happy!
J
The unit is installed in our 1996 Airstream, fits good, waiting to plumb it later in our renovation. We just purchased a Nature's Head from y'all, it's on the way! Thank you.
S
Workers first start up!
L
This is the second Precision Temp RV 550 Tankless Water Heater I’ve purchased. I had a smaller 27’ trailer. Worked great! I just upgraded to a Grand Design 380FL and put this puppy in. Love my new rig even more. My four kids and my beautiful wife can all take back to back showers! It fit perfect replacing the Grand Design Electric/Gas water heater!
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