Precision Temp


Precision Temp RV-550 Tankless Water Heater - Wall Vent

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  • Tiny Houses Inside is an Authorized Dealer for Precision Temp


    - Mfr Direct! Typically Ships To Your Door in 10 - 14 Days! -

    Precision Temp RV-550 Tankless Water Heater

    With four-season versatility and multiple venting options, the  Precision Temp RV-550 Tankless Water Heater is the only water heater you'll ever need. It allows all of the Tiny House's occupants to shower comfortably by producing endless hot water. It is not limited to a few minutes supply of hot water as with low-end tank type units. Nothing worse than having the hot water shut-off mid shower when you have soap in your eyes!

    The RV-500 efficiently and conveniently performs with up to 55,000 BTU's of power. At a flow of 1.5 gpm it can provide shower temperature water with incoming temperatures as low as 40 degrees. A 20lb tank of Propane (a barbeque-type tank) will provide approximately 940 gallons of shower temperature water.

    The RV-550 is quiet and efficient. For the same amount of propane the RV-550 produces 15% to 20% more hot water. And because you are not constantly reheating a tank, many people find that they use 50% less propane.

    Hot Water in Any Season

    Whether on cold East Coast winter evenings or on sunny days in Southern California, an endless flow of hot water (or until your water tank is empty!) for the ultimate Tiny House Hot Shower.

    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 heater operates only when the hot water outlet is turned on. The VariFlame control system then keeps the water temperature constant, regardless of the flow rate or incoming water temperature.

    More Hot Water. Less Propane.

    Without a tank to keep hot, many people report that they use up to 50% less propane. Tiny House'rs owners love the lower energy consumption and ability to be powered by off-grid solar solutions.


    • Never run out of hot water again!
    • Designed specifically for Tiny Houses and RVs
    • 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.
    • 2 yr Manufacturer Warranty  view RV550 Warranty 
    • view RV550 FAQ's
    • view RV550 Installation Guide
    • Made in the USA!


    Tankless water heater support and technical questions:

    Please call PrecisionTemp customer service at 1-800-934-9690 or email

    Contact Us or visit the manufacturer’s website, for additional product information.

    Precision Temp RV550 & RV550-NSP Tankless Water Heaters are Proudly Made in the USA!


  • Specifications

    Precision Temp RV-550 - Wall Vent: Download Manual

    • Dimensions:

      13.5" wide X 14.25" high X 13.5" deep

    • Weight

      Weighs one third as much as a ten-gallon tank:
      RV-550 — 32 pounds
      RV-550 NSP — 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)

    • 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

  • Why buy from us and not some other store?

    We're Tiny House owners ourselves and know the unique challenges faced every day by Tiny House owners. We pre-screen the best products for your tiny house's needs, like power consumption, space requirements, and most importantly quality you can depend on.

    We are an authorized dealer for all of the brands we represent. Meaning, we have the complete support of the manufacturers and should something be less than perfect, we got your back!

    We offer the Best Price available for you, and if you happen to find a lower price elsewhere,  we guarantee a price match with our Best Price Guarantee!  Our pricing includes no-taxes (except CA - sorry, Uncle Sam wants to be paid too), Free Shipping and complete support from us and the manufacturer.

    We guarantee amazing service, support and dedication from our team and the people that make your Tiny House furnishings.

    Just because your house is tiny, doesn't mean the support you receive should be.

    Please let us know if you have any questions or need help choosing the right products for your Tiny House. 


    Live Tiny, Dream Big!

    Tiny Houses Inside

  • Order Confirmation:

    As soon as you place your order, you will receive an order confirmation e-mail.  This means that we have received your order in our system and pre-authorized your credit card for the purchase.  As soon as we receive your order, we automatically reach out to our suppliers to confirm that it is in stock and available for immediate shipment.  If your item is on backorder or unavailable, we will void the pre-authorization and reach out to you via e-mail.  If your item(s) are available for immediate shipment (within 14 business days), we will process the charges and submit the order for shipment.

    Order Shipment:

    If your order is stock and we process the charges to your credit card, it will ship within fourteen business days from the date of your order.  We will send tracking information to the e-mail you provide within 24 hours of your order leaving the warehouse.  If you do not receive tracking information from us within fifteen business days of your order, feel free to follow up with us at  help


    Please inspect the packaging of your item(s) when they arrive, if you notice any damage you should make note of it when signing for delivery.  If your item(s) do arrived damaged, please send photos to  help and we will process an insurance claim on your behalf.

    Cancellations & Refunds:

    All orders cancelled after 48 hours are subject to a $20 administration fee, whether or not your order has shipped.  If you order has shipped, you (the buyer) will also be responsible for actual return shipping charges. Refunds will only be issued to the original credit card that you use when placing your order.

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