Ac Smith Proline Water Heater

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Innovative Hot Water Solutions For Your Home

HVAC: Hot Water Heater Installation (AO SMITH ProLine Commercial Grade Gas Water Heater)Step By Step

Hoerner Heating & Plumbing is a proud reseller, installer and service contractor for AO Smith water heaters, a world-leading provider of an extensive line of water heating solutions.

With more than 150 AO Smith water heaters on the market, theres one that fits the sweet spot between standard economical efficiency and high-efficiency ENERGY STAR quality water heaters that fit your needs and budget.

AO Smith water heaters – including tanked high efficiency water heaters are ENERGY STAR rated. The manufacturer continues to apply innovation and expertise to the manufacturing of high efficiency gas, electric water heaters.

Ao Smith Water Heater Standard Error Codes

If your AO Smith condensing water heater code includes a circuit board or remote control it can show an error code. Contact your plumber or AO Smith technical support at the location given above in this article.

Watch out: your water heater model may use different codes or may provide error codes that are not given here. Therefore you’ll want to consult the manual for your specific heater.

Table of AO Smith Condensing Water Heater Error Codes

Error Code

Improper gas combustion. Blinks 5 times.

Watch out: this is an unsafe condition risking CO hazards. If this indicator is on from first activation of the heater it may not be properly adjusted for the elevation at which the heater is installed.

Check for blocked exhaust flue or under-sized exhaust flue.

Check for debris clogging the gas burner or for a failed or blocked fan.

How to use the A.O. Smith water heater error code table above

Ao Smith Water Heater Age Decoding Tips

Contact: A. O. Smith Corporation | 11270 West Park Place | P. O. Box 245008 | Milwaukee, WI 53224 USA, Tel: 855.424.9892 A.O. Smith Water Heaters, 500 Tennessee Waltz Parkway, Ashland City, TN 37015 USA, Tel: 1-800-433-2545 Website: Email:

A.O. Smith Water Heater Age Determination – reader comment: AO Smith employee said: To tell the age of any AO Smith water is the first 4 numbers.

The first 2 are the year and the second 2 are what week it is. I work in the Q.C. Department there and make the serial plates all the time. Hope this information helps some people out – A.O.S. employee.

Also Check: Circuit Board For Ac Unit

Additional Rebates May Apply

In many parts of the country, state agencies and local municipalities have laws and codes governing water heater installation as well as rebates for homeowners using high efficiency products. As a licensed professional, your A. O. Smith contractor can advise you on industry regulation, standards and opportunities to save money that will also save you from future headaches.

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Installed By A Professional A O Smith Contractor

A.O. Smith GCRL

Just as A. O. Smith stands behind its products, your A. O. Smith contractor stands behind their installation work. Theyll be there when and if you ever need them. Your A. O. Smith contractor is an expert in installation safety and knows the correct techniques for proper venting, for working with gas and electric utilities, and for protecting your homes existing plumbing system.

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Wide Range Of Water Heating Solutions

ProLine Gas Water Heaters offer a wide range of water heating solutionsfrom models that help you qualify for gas utility rebates to high recovery models ideal for large families with high demand for hot water. And, our specialty vent gas water heater options can be installed almost anywhere in your home because they can vent up to 40 feet. Our direct vent models feature two-pipe combustion systems that draw clean air from outside the home, eliminating any worries about indoor ventilation.

Ao Smith Water Heater Manuals & Troubleshooting Guides

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Efficiency & Reliability For Your Home

A. O. Smith ProLine electric water heaters are designed with the same blend of innovation and cutting-edge technology as our industry-leading commercial line. Efficient and reliable, these residential products have been thoroughly tested in our labs to ensure that they last, and that means peace of mind for you and your family.

Older Ao Smith Water Heater Date Codes

AO Smith ProLine XE Power Vent Gas Water Heater

Ser# YYWW123456 – example: Ser# 9902123456 decodes to year 1999 and the week 02 – or early January. This A.O. Smith water heater date of manufacture code has been used since 2008.

Ser# MMYY1234567 – example: Ser# 03991234567 decodes to March 1999 this older style AO Smith water heater date code decodes as shown where MM = month and YY = 2 digit year.

Ser# MYY1234567 – example Ser# B0112344567 decodes to February 2001: the first letter encodes the month using A – N for January – December and the second two digits encode the year. See the Month Decoding table given below

Ser# FB00A123456 decodes to F=Factory code, B=month code using A – M for January – December and the next two digits encode the year. – example: Ser# GB92-03123456-789 decodes to Factory ID=G, Month=B or February, Year=92 or 1992.

Ser# N69-C-YY-12345 decodes provide year in the pair of digits shown as YY – found on water heaters from the 1970s

Other AO Smith water heaters that may be sold under different brand names include Glascote water heaters, National water heaters & Perma-Glas water heaters.

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Ao Smith Water Heater Age Or Manualsao Smith Water Heater Installation Repair

  • about how to find out the age of an AO Smith water heater

InspectAPedia tolerates no conflicts of interest. We have no relationship with advertisers, products, or services discussed at this website.

A.O. Smith Water heater age decode key & water heater manual sources.

Age decoding guide for water AO Smith water heaters, manuals, repair & maintenance guides.

The water heater age guide on this page works for these brands: AO Smith, Glasccote, National, Perma-Glas water heaters.

We give contact information for AO Smith water heater, geyser, cylinder, calorifier manufacturers and for water heater installation, operation, & troubleshooting manuals.

We include a table of common error codes given on some models of A.O. Smith water heaters.

Our photo at page top shows an oil fired water heater with a backpressure problem and other safety concerns like a missing extension tube on that relief valve, and maybe a missing draft regulator and perhaps an oil line that is not protected from damage.

We also provide an ARTICLE INDEX for this topic, or you can try the page top or bottom SEARCH BOX as a quick way to find information you need.

Featured Ao Smith Water Heaters For Your Home

AO Smith – ProLine Atmospheric Vent – 50 Gallon Residential Gas Water Heater – GCRL 50 – 40,000 BTU – AOS50NV

Designed for performance – as are all AO Smith water heaters – the ProLine Atmospheric Vent is the perfect residential water heater for homeowners who desire commercial-grade quality.

With a built-in diffuser dip tube to reduce sediment and lime buildup to maximize output, this unit has a thermopile design with a robust pilot. Adjusting the temperature is simple, and the combustion chamber is easily accessible for servicing.

AO Smith – ProLine XE Power Vent – 50 Gallon Residential Gas Water Heater – GPVL 50 – 40,000 BTU – AOS50PV

The ProLine XE Power Vent is a fifty-gallon gas water heater, engineered for superior efficiency and a variety of installation options.

This product features a nominal 50-gallon tank and 40,000 BTU gas burner that delivers 79 gallons in the first hour, recovering 44.7 gallons per hour.

With a 6-year limited warranty, the ENERGY STAR qualified ProLine XE Power Vent has a 0.72 Uniform Energy Factor, and meets Low NOx emission requirements.

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Ao Smith Electric Water Heaters

Lead Notification

This product does not meet the new low-lead criteria defined in Safe Drinking Water Act and cannot be used for potable water applications, including for drinking and cooking. This product can be used for non-potable water applications only.

Why don’t we show the price?

While reserves the legal right set its own product pricing, some manufacturers require internet retailers to display a price at or above manufacturer’s established MAP .

Since our price for this product is lower then MAP, the manufacturer does not allow us to display our lowest price until you place the product in the shopping cart. This allows us to continue offering our lowest prices while staying consistent with product manufacturer’s policy.

This process does not require you to purchase the product – it can be easily removed from shopping cart if needed.

We understand that this is an inconvenience and are continually working with manufacturers to educate them on how MAP affects our customers.


Rydlyme Water Heater Descaler


has been approved for use in several large facilities in Canada including Nova Chemicals, Cabot, ArcelorMittal Dofasco, Procter & Gamble, Suncor, and Stelco, among others, and is the warranty-approved descaler for all AO Smith Water Heaters.

Speak to Hoerner Heating and Plumbing today if youd like to discuss finding the right AO Smith water heaters for your home, or if youd like to schedule an appointment for your annual water heater maintenance service. Remember to ask about Rydlyme!

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Contact Information & Service Manuals For Ao Smith Water Heaters

A.O. Smith water heaters are also sold under these brand names:

Glascote Water Heaters PermaGlas water heaters

  • Contact: A.O. Smith Water Products, A. O. Smith Water Products, 500 Tennessee Waltz Parkway, Ashland City, TN 37015 USA, Tel: 800-527-1953. Website: – readers can find their type and model of AOS water heater and then find all of the documents concerning that model AO Smith water heater manufacturer’s water heater age page: A. O. Smith Corporation is one of the world’s leading manufacturers of residential and commercial water heaters and boilers, offering a comprehensive product line featuring the best-known brands in North America, China, and India. The company was founded in 1874 in Milwaukee, Wisconsin where today the company is headquartered. – retrieved 2018/02/23, original source:

Below: the data tag for this new A.O. Smith electric water heater.

The serial number for this A.O. Smith water heater is ME98-0041362-917

I decode this to E = May and 98 = 1998. We purchased this water heater as new old stock in 2015 – it was the last heater of this model series in stock at the local Poughkeepsie supplier.

A O Smith Launches Commercial

A. O. Smith has applied its commercial water heating expertise to its new ProLine family of commercial-grade residential water heaters.

Commercial-grade quality comes second nature to A. O. Smith thanks to its vertically integrated manufacturing approach. A. O. Smith subsidiaries are responsible for designing, engineering and fabricating many of the residential and commercial components used in its water heaters. And, A. O. Smith remains the only water heater manufacturer that creates its own glass coatings. This allows A. O. Smith to integrate commercial-grade technology and components into each step of the manufacturing process for all products, including its residential models.

Available exclusively from A. O. Smith professional contractors, the commercial-grade ProLine family of residential water heaters features a wide range of models suitable for most residential applications. ProLine products are available in three categories:

  • ProLine: Commercial-grade parts and reliability.
  • ProLine Master: A new product series with high-end components, including dual stainless steel elements and increased anode protection, along with extended eight-year warranty coverage in both electric and gas models.
  • ProLine XE: Highest performance and greatest energy efficiency with alternative technologies, such as heat pump, tankless and more.

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What Our Customers Say About Us

“The guys were very friendly. They took lots of care and attention when removing the old furnace and replacing it with the new one to not damage anything along the way. Once finished they took the time to explain the operation and go through any questions we had. I would definitely use them again.”

– Kyle J.

“This review is for Noel who came to my home to see why our electric air cleaner was not working. He was punctual and super friendly. Found the problem within 15 minutes. Had the part ordered, and 9 days later it literally only took him 3 minutes to replace it for us!”

– Joy H.

“Booking an appointment for a furnace checkup was a very quick and simple phone call. The technician was on time as promised, very knowledgeable and professional. It gave us piece of mind that our 10 year old furnace was in good working order.”

– Nicolas L.

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