Precision Temp RV 550 NSP Tankless Water Heater - Floor Vent

"Finally, one that works! - Three tankless water heaters later and finally I find this unit that actually does the job. Easy purchase, fast delivery, thanks shop tiny houses!" - Joshua B.

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Need Help? Call Us: 888-467-5447

  • Precision Temp Floor Vented RV 550 NSP Tankless Water Heater

    **The standard white finish is currently unavailable and all units will be shipped with polished finish aluminum.**

    Identical to the RV-550, the RV-550 NSP  is designed to be vented through a 2 inch exhaust pipe avoiding the large wall penetration used to install the RV-550. This Precision Temp model is the only all-season, floor vented, tankless water heater for cabins, tiny houses and RVs.

    No Freezing Up, No Worries!

    The Precision Temp RV-550 NSP tankless water heater utilizes patented VariFlame Control technology to deliver an endless flow of hot water in your cabin or tiny house.


    No more running out of hot water in the middle of a shower. Whether you live alone or have a large family, no one has to take the blame for using the last of the hot water!

    Hole In The Wall Vs No Hole In The Wall

    The RV-550 NSP is vented through the floor where the traditional RV-550 is installed through the wall. This allows the RV-550 NSP to avoid through wall installation and make the NSP model truly an all season installation at the same time!

    Show Me The POWER in Precision Temp 

    There's a bunch of power packed into this little unit. 55,000 BTUs to be exact making this unit the highest hot water output in the industry. Add the built-in freeze protection and this tankless water heater really delivers more than just hot water.

    What About Efficiency on Precision Temp

    With higher efficiency and 55,000 BTUs, the RV-550 produces more hot water, has no tank to keep hot, and uses less propane than than traditional water heaters by as much as 50%.

    How Precision Temp RV 550 NSP works


    Precision Temp RV 550


    Precision Temp RV 550 NSP Features

    • Never ending hot water!
    • Small footprint 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 NSP Specifications

    • 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: 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: Through the floor by 2″ exhaust pipe, power vented. ***Exhaust pipe is not included and will need to be obtained at a local automotive store. **
    • 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 NSP

    Learn more about Precision Temp RV 550 NSP

    How to install Precision Temp RV 550 NSP 

  • Free Shipping Promotion:

    Shipping costs for our business are typically around $10 for accessories can range and up to $450 for larger items. However, for a limited time only, we are offering free shipping on all products to the lower 48 states in the U.S.. No minimum order required!

    If you would like an order shipped to anywhere else in the world, please email us at, and we will gladly work something out with you! reserves the right to cancel this offer at anytime

    Order Confirmation:

    After you place your order, you will receive a confirmation email. This means that we have received your order in our system. As soon as we receive your order, we automatically reach out to our suppliers to confirm that it is in stock and ready for shipment. If your item happens to be on backorder, or is otherwise unavailable, we will let you know via email. Once your item(s) are available for immediate shipment, we will ship the order.

    Order Shipment:

    Your order will ship within the lead time we have posted on the product page. We will email you tracking information within 24 hours of your order leaving the warehouse. If you do not receive tracking information from us by 3 days after the lead time posed on the product page has elapsed, feel free to follow up with us at

    Most orders will be shipped by FedEx or UPS. Small items may be delivered by the US Postal Service or by the US Postal Service via FedEx Smartpost or UPS Surepost. Larger items may be delivered via FedEx Ground, FedEx Home Delivery, UPS Ground, or Truck Freight. Items shipping via Truck Freight are clearly marked on our website and catalog. Some special orders may require 2 to 6 weeks depending on the item.

    Some large or heavy items require additional shipping and handling charges due to the bulky nature of these products. If an item requires additional shipping and handling charges we will clearly mark this requirement on our website and in our catalog. In most cases, we charge a "flat" rate to ship these items.

    Free shipping applies to orders totaling over $99 shipped to a final destination within the contiguous 48 states of the United States. Certain items do not qualify for free shipping regardless of order total. Items that do not qualify for free shipping will be clearly marked on our website. reserves the right to cancel this offer at anytime. Delivery to rural or extended areas, special order, & Truck Freight shipments may take extra days to arrive. Please call (888) 467-5447 for details.

    International Orders:

    International Orders (except Canada) require special processing. When you are entering an International Order, please complete all the necessary information. We will get a shipping quote from one of our International shippers. We will contact you with the final charges for approval. The order will not be shipped or charged unless it is confirmed by you. Please note: You will be responsible for any applicable taxes and/or duties that will need to be paid upon delivery.

    Canadian Orders: We do not ship directly to Canada, however, we will ship to a US-based freight forwarder of your choice! We recommend you first contact the desired freight forwarder to obtain their shipping and receiving processes. You will be responsible for all duties and tariffs on Canadian shipments, along with coordinating with the freight forwarder for delivery to final destination. Please call (888) 467-5447 for assistance, otherwise enter the shipping address provided by your US-based freight forwarder.


    ALL SHIPMENT SHOULD BE INSPECTED AT THE TIME OF DELIVERY. DAMAGED PACKAGES SHOULD BE REFUSED. If you notice any damage, you should note it on the freight bill when signing for delivery. If your product is defective or sustains damage during shipping, please contact us at right away. Remember to keep all the original packaging for any items that need to be returned. All returns need to be authorized by our customer service department prior to being processed.

    If delivered by Truck Freight, please contact the freight carrier at the phone number on the carrier’s bill. After contacting the carrier, please call Customer Service at (888) 467-5447 for further assistance with the damaged shipment. Please note, signing for your delivery without noting any damages or inability to inspect the delivery on the relevant paperwork legally states that you have received your freight in good condition and cannot be held liable for any damages, missing pieces, etc. that may be incurred as a result of this decision. Leaving a note or instructions for the driver is considered to be the same as signing for your products in good condition. If you authorize the freight company to leave freight without a signature, cannot be held liable for any damages, missing pieces, etc. that may be incurred as a result of this decision. If you choose to sign for a visibly damaged please note on the relevant paperwork that you are signing for a damaged package; however, cannot be held liable for any damages or missing pieces for accepted via signature delivery.

    Cancellations & Refunds:

    To cancel an order, reply to the confirmation email you received when you placed your order online. Just tell us why you need to cancel and we will process it as soon as we can. All orders canceled after 48 hours are subject to a $50 administration fee, regardless of whether your order has shipped. If you order has shipped, you will also be responsible for return shipping charges. Refunds will be issued to the credit card that you used when placing your order minus a 10% restocking fee.*

    How do I return a product?

    If you want to return an item, please send an email to

    Returns will only be accepted within 30 days** of the receipt of your product. The product must be returned unused in the original packaging.

    We do not accept returns of used products. You should also provide us with a receipt of your purchase and a reason for returning the item.

    Please note that you cannot return an item without a valid return authorization number.

    You (the customer) are responsible for return shipping to the address given at the time you receive your RMA. In addition, there will be a 10% restocking fee on all returned products.

    Upon receiving and inspecting the returned product, will issue a refund for the full amount (minus restocking fees) to the credit card used for the purchase only.

     * A 20% re-stocking fee will be applied for all Aqua2Use products

    ** For all Emergency Water Well products, the item must be returned within 10 days for receiving the product. All other conditions above apply. 

  • Every transaction at is guaranteed to be safe.

    This site uses SSL encryption technology that so that you never have to worry about credit card safety.

    Statistically online purchases are safer than using your credit card at a department store or a gas station.  Experts have shown that online purchases are far safer than in person credit card transactions because the information is immediately encrypted into a scrambled message that can only be decrypted by an authorized computer.

    Still don’t want to use your credit card on the World Wide Web?

    We’ve got you covered! Simply call us at (888) 467-5447 and we will gladly help you place your order.

  • Why Buy From

    We know you have a choice in online shopping, and we want to do all that we can do to earn your business.  We not only want to earn it, but we want to keep it as well!

    Here are the top 7 reasons to buy from

    100% Safe and Secure Online Shopping - Know that every transaction that takes place on our website is 100% secure.  If you'd like to learn more, see our Online Security page.

    Fully Insured Shipments - Every shipment that leaves our warehouses is fully covered in case of a lost item or damage.  Please refer to the Shipping & Returns tab to learn more about our policy.

    Quality - We understand what it can be like to purchase online without actually seeing and touching the product itself.  So we want you to know that all the manufacturers on this site are hand chosen by our owners to ensure you receive a quality product. All items are inspected (twice) before leaving our warehouses so we know that you’ll be happy with the product that arrives at your door.

    Customer Service Is Our Top Priority - Plain and simple, we are here for YOU, the customer. Our goal is to deliver the WOW factor in service. We strive for excellence in customer service and are driven to provide value at all times.  You can expect communication from us immediately after your order is placed, and also when your product ships.  To this day, every order still receives an email from our owner personally thanking you for letting us earn your business.

    Authorized Dealers - is an authorized dealer for every brand that we carry.  You can rest easy knowing you will receive the full manufacturer's warranty with every purchase.

    Volume Discounts - Are you are looking to buy a large quantity of one item?  Send us an email at and we may be able to offer special pricing for larger volume purchases.

    Purchase Orders Accepted - If you are a School, Government Agency or large business that would like to utilize this option, please email us at or call (888) 467-5447 and we will get in contact with you right away. 


What Our Customers Are Saying

Based on 5 reviews Write a review

Customer Reviews

Based on 5 reviews
Andrew Hunter

Great service arrived quickly

Joe Erskine
Precision temp!

Very nice product. Great communication. Will buy from again

Ron W.
Great unit works wonderfully

Have way better hot water than ever in my motorhome. So quiet never know its running. Love the long showers. A bit difficult to install because of my layout in the bay but got it done. Would recommend there products to everyone.

Elizabeth K.
Speedy and easy

Product shipped fast and no problems!

Joshua B
Finally, one that works

Three tankless water heaters later and finally I find this unit that actually does the job. Easy purchase, fast delivery, thanks shop tiny houses!

Customer Reviews
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Andrew H.
United States


Great service arrived quickly

Joe E.
United States United States

Precision temp!

Very nice product. Great communication. Will buy from again

Ron W.
United States United States

Great unit works wonderfully

Have way better hot water than ever in my motorhome. So quiet never know its running. Love the long showers. A bit difficult to install because of my layout in the bay but got it done. Would recommend there products to everyone.

Elizabeth K.
United States

Speedy and easy

Product shipped fast and no problems!

Joshua B.

Finally, one that works

Three tankless water heaters later and finally I find this unit that actually does the job. Easy purchase, fast delivery, thanks shop tiny houses!