Precision Temp Precision Temp TwinTemp Junior Tankless Water Heater - Floor Vent TwinTemp Junior

Precision Temp TwinTemp Junior Tankless Water Heater - Floor Vent

Precision Temp TwinTemp Junior Tankless Water Heater - Floor Vent

Regular price $4,275.00
  • FREE Shipping to the Lower 48 States and No Tax!
  • 30 Day Hassle-Free Returns
  • 30 Day Price Match Guarantee
  • In Stock & Ready to Ship

Precision Temp TwinTemp Junior Tankless Water Heater

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

The TwinTemp Junior brings all the features you know and love from the TwinTemp series but is a little smaller with one heating zone and up to 6 blowers. The TwinTemp Junior is super quiet and best of all - no diesel smell. 

That's right, the Precision Temp TwinTemp Junior uses propane instead of diesel, so no foul smells and is perfect for all all motorhomes, fifth wheels, horse trailers and towables.

No Freezing Up, No Worries!

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


Rather than relying on a pilot light or electricity to ignite the burners, the TwinTemp uses a small amount of propane to trigger the ignition sequence – ensuring that your hot water is always available when you need it.

No more waiting for the water to heat up, no more worries about running out of hot water – the TwinTemp Junior tankless water heater is always ready when you are!

Hole In The Wall Vs No Hole In The Wall

The TwinTemp Junior is vented through the floor, eliminating the need for a large wall penetration. This allows the TwinTemp Junior to avoid through wall installation and the potential for propane or other flammable vapors to enter the living space.

The TwinTemp Junior is also one of the lightest and most compact tankless water heaters on the market – making it the perfect choice for anyone looking to save space and reduce energy usage.

Show Me The POWER in Precision Temp 

This little tankless water heater packs a big punch with a 55,000 BTU burner and up to 1500 watts of power. The Precision Temp TwinTemp Junior can support up to six blowers, making this the perfect option for buses, RVs, tiny houses, cabins, barns, and more.

Plus, unlike other tankless water heaters, the TwinTemp Junior is whisper-quiet and doesn't produce a noxious diesel smell that can be harmful to your health.

What About Efficiency on Precision Temp

The TwinTemp Junior is 35% more efficient than traditional tankless water heaters and can save you up to 25% on your annual energy costs.

Plus, since it doesn't require an exhaust pipe through the wall or rely on a pilot light for ignition, it's easier than ever to keep your energy usage down and still enjoy hot water when you need it most.

Thanks to this increased efficiency, the TwinTemp Junior produces more hot water, has no tank to keep warm, and provides an endless supply of on-demand hot water – all while using 50% less propane than a traditional tank heater.

How Precision Temp TwinTemp Junior Works


Precision Temp RV 550


Precision Temp TwinTemp Junior 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
  • ULC approved in all provinces
  • No sidwall penetration needed
  • Two independent heating zones to provide heat and hot water simultaneously (for multiple use rooms)

Precision Temp TwinTemp Junior Specifications

  • Type: Tankless propane-fired water heater with full gas modulation. Vented through floor and cold weather protection.
  • Dimensions: 20.5” wide x 16” deep x 14” high
  • Weight: 65 pounds
  • Capacity: 55,000 BTUs max input (88°F temperature rise / gal / minute)
  • 15,000 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 TwinTemp Junior

Learn more about Precision Temp Water Heaters

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.

Custom Orders

Unfortunately, we are unable to accept returns for custom ordered products (made through a custom invoice) due to the nature of these specially ordered products. 

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

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

Questions & Answers

Have a Question?

Be the first to ask a question about this.

Ask a Question

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Recently viewed