Precision Temp Precision Temp ShowerMate M-550 Propane Tankless Water Heater M-550-EC
Precision Temp Precision Temp ShowerMate M-550 Propane Tankless Water Heater M-550-EC
Precision Temp Precision Temp ShowerMate M-550 Propane Tankless Water Heater M-550-EC

Precision Temp ShowerMate M-550 Propane Tankless Water Heater

Precision Temp ShowerMate M-550 Propane Tankless Water Heater

Regular price $1,495.00
  • 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 ShowerMate M-550 Propane Tankless Water Heater

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

The Precision Temp ShowerMate M-550 is a high-quality propane tankless water heater that is perfect for use in any marine environment.

With its compact size and lightweight construction, this shower unit can be easily installed and used anywhere on your boat or ship – making it the perfect choice for those who want hot water on demand without the hassle and bulk of a traditional tank water heater.

What sets the Precision Temp ShowerMate M-550 apart from other tankless water heaters is its innovative design. This unit is specifically designed for use in a marine environment, with a number of features that make it ideal for use in a ship or boat.

No Freezing Up, No Worries!

The Precision Temp ShowerMate M-550 utilizes patented VariFlame Control technology to deliver an endless flow of hot water on demand. This means that you'll never have to worry about your water heater freezing up in cold weather – making it the perfect choice for those who live and work in colder climates.


No more worrying about whether or not your water heater will be able to withstand the rigors of marine life – the Precision Temp ShowerMate M-550 is built to last and to perform. Order yours today and enjoy hot water on demand, wherever you are!

Show Me The POWER in Precision Temp 

This little heater is a powerhouse! With its ability to heat water on demand, the Precision Temp ShowerMate M-550 is perfect for those who want hot water without the wait.

Don't let its compact size fool you – with 55,000 BTUs of power, this tankless water heater can provide an endless supply of hot water for your shower, sink, or washing needs.

And because it's propane-powered, the Precision Temp ShowerMate M-550 is perfect for those who want the convenience of on-demand hot water without the need for an electrical hookup.

What About Efficiency on Precision Temp

The M-550 EC produces more hot water than a typical water heater – all while using minimal fuel! Its VariFlame Control technology means that it only uses propane when you need it, helping to save precious resources and money.

Thanks to this increased efficiency, the Precision Temp ShowerMate M-550 is also much more environmentally friendly than other water heaters on the market – making it a smart choice for those who want to do their part for the environment.

How Precision Temp ShowerMate M-550 Works


Precision Temp RV 550


Precision Temp ShowerMate M-550 Specifications

  • Type: Gas instantaneous, power vented. Full gas modulation temperature control. 
  • Dimensions: 13.5″ wide x 13.5″ deep x 14.5″ high, including power vent.
  • Weight: 30.5 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 with proofing switch, power vented. ***Exhaust pipe is not included and will need to be obtained at a local automotive store. **
  • Construction: Aluminized steel body with stainless flame strips.
  • Access door is painted aluminum.
  • Head exchanger: Copper fin tube type with wrap for cooling.
  • 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.

Precision Temp ShowerMate M-550 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 no worries about flammability.
  • Simple installation – can be easily done by one person.
  • Propane-powered for increased efficiency and convenience.
  • 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.
  • ULC approved in all provinces
  • Ideal for RVs, boats, and all marine applications

Installation, Operation & Maintenance Manual for ShowerMate M-550

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. 

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