RP2100 Digital Heater - R266A - Cupro-Nickel - Natural Gas - P-R266A-EN-X #51



Model # 014939

By Raypak

  4.79 Average  



Model # 014939

Warranty 1 Year

Manufacturer Code P-R266A-EN-X #51

Alternate Part #'s 010103, 014939, P-R266A-EN-X #51, PR266AENX

Product Description

Enjoy your pool......Extend your swim season
Your pool and spa is a long-term investment that you, your family and friends will enjoy year after year. Now, there's an easier way to enjoy that investment more often, more reliably and more efficiently throughout the year...the Raypak Digital pool and spa heater.

Think about being able to use your pool or spa at the perfect comfort level even when Fall arrives...or when the first chill of Winter is felt in the wind...or in the Spring or Summer when evenings can turn chilly in a minute! Helping you get more enjoyment from your pool or spa is the smart idea behind the Raypak Digital.

Elevation: 0 Ft. – 2000 Ft. Click Here for High Altitude Pool Heaters


Digital Controls

  • Microprocessor Controlled Thermostat

The Raypak Digital gas heater comes with a microprocessor based thermostat control. This control allows you to set your pool or spa temperature precisely at your favorite setting just by pressing an up or down temperature control button. The Digital display gives you a constant read out of your pool water temperature. Just set it, and forget it! Truly simple.

  • Self Diagnostic

Troubleshooting a gas heater has never been easier. The Raypak Digital has on-board diagnostic controls that let the user and the service professional know what is going on with the heater at all times. In the event that you would ever have a problem with the heater, the digital display will show where the problem is in the control circuit. It's like having a service technician built into every heater!

  • Remote Compatible

The Raypak Digital is compatible with most major pool control and remote systems on the market today. Any two-wire or three-wire remote can connect to the Raypak Digital and be integrated into the pool control system of your choice.

Wind Resistant

  • Built-in Wind Resistant Design

The Raypak Digital has the best outdoor design in the market today. With over 50 years in designing and building gas heaters, Raypak has put all that experience into its newest heater design. No need for fans to combat drafting problems, the Raypak Digital was designed for outdoor installations with its exclusive low profile design. It is so thoughtfully and carefully designed it actually protects itself from the things that tend to stifle ordinary pool and spa heaters: falling leaves, wind, airborne debris, rain, downdrafts, updrafts, sleet, snow, etc. In fact it is so efficiently designed it ensures uninterrupted heating performance regardless of all but the most extreme weather conditions. Built Raypak tough. Built to last.


  • Smart Design

One look will tell you that the Raypak Digital is different! The look is contemporary. The design is advanced. And inside and out it's engineered to last. The attractive forest green and charcoal gray panels complement the latest pool and spa equipment designs. Raypak's original "pagoda top" design will keep the heater operating even in extreme wind conditions and downdrafts.

  • Polytuff Powder Coating

The Raypak Digital has a polyester coated, non-corrosive cabinet that is more durable than solventborne and waterborne coated metal cabinets. Every piece of sheet metal that gets powder coated goes through a 7-stage wash system making certain the powder paint has a perfect bond. Underneath the tough and beautiful finish you will find galvanized metal that offers superior rust prevention and years of durable service.

Non-Corrosive Waterways

  • Polymer Header

The Raypak Digital incorporates the latest in header design technology. Raypak's state-of-the-art engineering department utilized the latest in 3-D computer aided design to engineer the part for optimal performance. Polymer resin headers prevent rust stains from harming your pools surface giving you years of trouble-free swimming pleasure

  • Cupro-Nickel Fin Tube

This Raypak Digital heater has cupro-nickel fin tube heat exchangers for added protection against aggressive water chemistry. Although rare, there are certain applications, like health club spa's, where copper is just not the best choice. Cupro-nickel offers superior tolerance to bad and fluctuating water chemistry, thanks to a harder surface and thicker walled fin tube.

California Customers Please Note:  South Coast Air Quality Management District ( SCAQMD) Area of Jurisdiction REQUIRES a Low Nox Heater be installed.  The following 6 California Counties are affected:  Los Angeles, San Bernardino, Ventura, Orange, Riverside, & Kern. Installing a non-compliant heater in these counties will void the manufacturer's  warranty and could result in a fine from your local code enforcement.    Click here for RayPak Low Nox Heaters

This Limited Warranty does NOT apply; 
1. if the product has been moved from its original place of installation, or if the original 
owner no longer owns the property where the original installation was made; 
2. if the product is not properly installed with a pool or spa by a qualified licensed installer in 
accordance with applicable local codes and ordinances, good trade practices, and the 
manufacturer’s installation instructions; 
3. if the rating plate(s) or serial number(s) are altered or removed; 
4. if the product is modified in any way, or non-factory authorized accessories or other 
components are used in conjunction with the product; 
5. to damage, malfunctions or failures resulting from failure to properly install, operate or 
maintain the product in accordance with the manufacturer’s instructions; 
6. to damage, malfunctions or failures from abuse, act of nature, accident, fire, flood, freeze, 
lightning or the like; 
7. to damage, malfunctions or failures resulting from [or due to] connected system control 
8. performance problems caused by improper sizing of the heater or electric service 
voltage, wiring or fusing; 
9. use of any attachment, including any energy saving device not authorized by the 
10. to damage, malfunctions or failures from misuse or neglect, including but not limited to, 
freeze-ups, operating the heater with the cabinet door off, having flow restrictions or 
obstructions between the heater outlet and the pool/spa, or not maintaining a proper 
chemical balance (PH level must be between 7.4 and 7.8 and total alkalinity between 100 
and 150 PPM. Total dissolved solids (TDS) must be no greater than 3000 PPM)

Product Specifications

266,000 BTU
Digital Readout:
Heat Exchanger:
Plumbing Size:
2 in.
Special Feature:
Standard Emission
0-2,000 ft.

?     Asked on 9/26/2020 by George S

What is the warranty period? Does Raypak honor the warranty if it's properly self-installed? Since difference between installs could be well over $2k

A  Answered on 12/16/2020 by InyoPools Product Specialist Hector F.

Hi George, these carry a Ray Pak 1 year warranty and must be installed by a licensed technician in order to guarantee the warranty. 

?     Asked on 7/2/2019 by

What is the coefficient of performance

A  Answered on 10/15/2019 by InyoPools Product Specialist Steve M.

We apologize for the inconvenience, however, we have been unable to obtain that information from the manufacturer. We suggest calling them directly to see if you are able to find anything.

?     Asked on 5/24/2019 by Dave

When installing the cupro nickel heater with a salt pool, is a check valve needed? I don't have a lot of room with the way the pool installer hooked the equipment up. I think it will be extremely difficult to add one.

A  Answered on 5/24/2019 by InyoPools Product Specialist Lennox H.

Hi, Dave. Yes, a Check Valve is still required. 

?     Asked on 6/3/2018 by

do I need to install a by-pass valve with this heater?

A  Answered on 6/3/2018 by InyoPools Product Specialist Lennox H.

Hi. Yes, I would recommend installing a manual bypass. It will allow you to regulate the water flow for maximum efficiency, and service the heater while running your pool. 

?     Asked on 5/17/2018 by

do I need a check valve for water outlet and where is it connected?

A  Answered on 5/17/2018 by InyoPools Product Specialist Lennox H.

Hi. Yes, you will if you have an automatic chlorine distribution system. 

?     Asked on 5/15/2018 by Ken Y

Want to make certain this is the correct unit to replace an old Raypak P-R265B for a salt water pool. From the Raypak document archives, looks like the current unit is 265k BTU and that the 266K would be a suitable replacement. Just want to make sure before placing the order.

A  Answered on 5/15/2018 by InyoPools Product Specialist Charlie R.

Ken, Yes, Raypak heater 014939 is the replacement for your 265k BTU unit and is also compatible with salt pools. 

?     Asked on 5/9/2018 by Jeff

can I get this heater with the inlet and outlet on the left side?

A  Answered on 5/10/2018 by InyoPools Product Specialist Hector F.

You cannot order them that way but you can switch the sides of the inlet/outlets. 

?     Asked on 4/2/2018 by Rich

What size gas line is used for this heater with distance over 15' from source to heater?

A  Answered on 4/4/2018 by InyoPools Product Specialist Kevin G.

Hello, for this specific unit you can use up to 50' of 1" piping, 210' of 1-1/4" piping, or up to 445' of 1-1/2" piping. 

?     Asked on 3/21/2018 by David Watkins

My current heater (Jandy Lxi 400k BTU) burned out the heater box after 9 yrs. The original install has only a 1.25 in gas supply pipe in a 130-140 ft run. Is that too small for a 400k BTU unit? Is there a problem with having too big a heater for the gas available? What size will work? Thanks, David - Dallas

A  Answered on 3/26/2018 by InyoPools Product Specialist Kevin G.

Hello, the maximum length of piping that you can have with this unit using natural gas is 95 feet. 

?     Asked on 2/16/2018 by John T

Hello, We are installing an inground hot tub. The pool installer plans to use this heater. I will have a new gas service installed just for the heater. My question is, the drawings they supplied show this unit mounted INSIDE my new pump house. Ive never seen a pool heater mounted inside, they say that's the only way they have ever installed them. Ideas?

A  Answered on 2/19/2018 by InyoPools Product Specialist Lennox H.

Hi, John. This unit can be installed indoors or outdoors. If installed indoors, you will need to also get the Indoor Stack Kit - 009839.

?     Asked on 6/23/2017 by Tom

I purchased a Raypak 266000 NG ELE from you on 7/14/15 (installed 10/15). It is dripping water out of the tubing above the burners, saturating the unit with salt water. Is less than 2 years the life expectancy of this unit? Tom

A  Answered on 6/24/2017 by InyoPools Product Specialist Hector F.

Usually, the units last longer. These are both packaged and stocked directly from Raypak who is one of the leading manufacturers of pool heaters. There are a number of variables that can cause these parts to go bad including chemistry that was not balanced. 

?     Asked on 5/29/2017 by

I have a thirteen year old 16x 32 ft in ground pool, 15,000 gallons. We need to replace our RayPac 2100 Digital heater. What would be the recommended replacement heater?

A  Answered on 5/29/2017 by InyoPools Product Specialist Alex V.

Hello, Do you know what size BTU heater you are replacing? You will want to replace it with the same BTU saize unless you are having new gas lines installed.

?     Asked on 3/13/2017 by

what does rollout SW open mean ? On the screen of the Raypak heater.

A  Answered on 3/13/2017 by InyoPools Product Specialist Alex V.

Hello, The Rollout SW Open means that the Rollout Switch is open. Please verify gas pressure, combustion air, blocked heat exchanger, proper vent size/connections, high wind conditions.

?     Asked on 3/4/2017 by

Does the Raypak Heater 266000 BTU NG EE (cupro-nickel) - 014939 come with Millivolt ignition option or only as an electronic?

A  Answered on 3/6/2017 by InyoPools Product Specialist Lennox H.

Hi, The unit you've described is only available as an electronic unit.

?     Asked on 9/19/2016 by judi

How long to heat 1000 gallons of water to 100 degrees starting from 40 degrees?

A  Answered on 9/20/2016 by InyoPools Product Specialist Stacey M.

Hello Judi, It will take about an hour to an hour and a half.

?     Asked on 5/25/2016 by Diane Campbell

What are the dimensions of this heater?

A  Answered on 5/26/2016 by InyoPools Product Specialist Lennox H.

Hi Diane, The dimensions of this unit can be found via the RP2100 Data Sheet.

?     Asked on 5/24/2016 by

Does this machine come with a regulator? Or do you have to purchase that separately?

A  Answered on 5/25/2016 by InyoPools Product Specialist Patrick P.

The heater does come with a gas valve which is inside the heater, however the regulator that is within the gas line is not supplied with the heater that would be supplied by the gas company.

?     Asked on 4/26/2016 by William Spencer

How far must the Raypak 266000 BTU Heater be from a building. No openings doors, vents or windows near the heater. I assume 6 inches would be OK?

A  Answered on 4/26/2016 by InyoPools Product Specialist Lennox H.

Hi William, A clearance of 6" from the building is okay. For additional info you can review the Raypak Owners/Instructions Manual.

?     Asked on 1/24/2016 by

How much does this this unit weigh?

A  Answered on 1/25/2016 by InyoPools Product Specialist Brian M.

The shipping weight of unit PR266AENX is 210 lbs.

?     Asked on 8/9/2015 by Michael

What is the high wind stack that goes with this heater? Is it PART# 6238-125 (009835)?

A  Answered on 8/12/2015 by InyoPools Product Specialist Lennox H.

Hi Michael, The Raypak High Wind Stack 266/267 (009835) would be the correct item.

?     Asked on 5/16/2015 by Ella Zavodnik

Can I use this Raypak heater (266,000 BTU's) with my existing 3/4" gas line. I am replacing my old Teledyne Laars 175,000 BTU heater that has worked well with 3/4" gas line.

A  Answered on 5/16/2015 by InyoPools Product Specialist Patrick P.

Hi Ella, As long as the distance of gas line from your gas valve to the heater did not exceed 15' than a 3/4" gas line would be fine for the Raypak 266K BTU. If your distance is longer than 15' then email me back with the details and I can make a reccomendation.

?     Asked on 5/5/2015 by Cory

Is this heater compatible with an above ground 27' round pool? Thanks.

A  Answered on 5/5/2015 by InyoPools Product Specialist Patrick P.

Hi Cory, Yes this heater would be compatible with a 27' Round above ground pool, you would need to get with your propane company to install the appropriate sized propane line.

?     Asked on 9/26/2014 by Guest

Who performs warranty and out of warranty repairs? What maintenance and troubleshooting services are available?

A  Answered on 9/26/2014 by InyoPools Product Specialist Patrick P.

Raypack would be in charge the warranty. You can always call Raypack in order to trouble shoot. Their number is 805-278-5300

?     Asked on 10/10/2012 by Guest

What is the difference between an Electronic and Millivolt ignition?

A  Answered on 10/10/2012 by InyoPools Product Specialist Patrick P.

The basic answer is that Millivolt is the old style of ignition, using a standing pilot light. While the electronic ignition uses a spark start system like a gas grill. Electronic ignitions are more efficient in gas usage and also are better suited for high wind areas where a pilot light might get extinguished.

?     Asked on 1/16/2012 by Guest

Will a gas heater operate at the low speed of a dual speed motor?

A  Answered on 1/16/2012 by InyoPools Product Specialist Patrick P.

Probably not - Most gas heater will shut off at low GPM levels (20-40) to keep the heater cores from overheating - 20 for 200 BTUs, 40 for 400 BTUs. Depending on your pool system you might get these GPM levels at the low speed but generally these heaters must be run at the motor's high speed.


Est. Repair Time

2 to 4 hrs

Tools Needed

Screwdriver, Pipe Wrench and PVC cutting tool

1     0

Heater replacement

Written on 5/5/2020 by Guest

We previously had a heater so the gas was in-place.

1) Disconnect and move old heater (heavy, but easy)

2) Connect gas, adding coupler and 3-inch nipple. Pipe dope in appropriate places and tightened to seal. Check for leaks with 50/50 soap and water mix. (Easy, required a pipe wrench to get tight enough.)

3) Replace 6' outdoor prewired electrical whip kit (Moderate)

4) Bond heater to pump and primary ground (Easy, needed a split bolt connector)

5) Run plumbing. Dry fit with with too much pvc...don't be like me or else you'll have to redo one or both sides. Also, with only 1 set of the 2" connectors, you need to be sure it's right before glueing. (Hard, low effort but it's easy to do wrong)

Were these instructions helpful? 


Est. Repair Time

1 to 2 hrs

Tools Needed


New in ground pool and new heater

Written on 10/19/2019 by Guest

Pool heater was delivered without delay or issue. Very easy process from INYO pools. Installed heater electrical and then had a plumber come and install the gas line. Heater was making funny noises and figured out my pressure was too low. Bumped the pressure up by pump speed and it is working flawlessly. Great purchase experience through INYO pools.

Were these instructions helpful? 


Est. Repair Time

2 to 4 hrs

Tools Needed

Screwdriver, Adjustable Wrench

3     0

Rusted out old Raypak heater

Written on 5/31/2018 by Guest

Estimates for replacement were staggering. I’m pretty mechanically inclined; have done plumbing, electrical, and gas in the past. New unit arrived on Friday morning, used a 2-wheeler to roll out the old one, moved new one into place. I had it installed and working by the afternoon. My install was probably easier because most everything lined right up. Saved a TON doing it myself.

Were these instructions helpful? 


Est. Repair Time

2 to 4 hrs

Tools Needed

Screwdriver, Adjustable Wrench, adhseives/plumbing

1     0

Old heater was broken

Written on 5/25/2018 by Guest

My friend and I removed the old heater as well as some of the existing piping as the gas pipe was in poor shape as well as the water delivery. Turned out to take about 3-4 hours for a couple of amateurs but it wasn't overly difficult. Runs great and heats really well!

Were these instructions helpful? 


Est. Repair Time

Less than 1 hr

Tools Needed

Wrench Set, Adjustable Wrench, Pipe dope, tin snips (because my gas line is on the right side of the heater), wire cutters

2     0

Old heater leaking and not lighting

Written on 6/13/2017 by Guest

Memorial Day the pool heater would not light. Could hear it sparking, but not firing. Tried cleaning out some spider webs around the igniter and that got it to explosively light sending a huge orange ball of fire up and out of the heater. That was enough for me.

Went inside and checked out Inyo's heaters. I knew I was still going to go with Rapak because of all the research I did they were the heater of choice. At first I ordered the 266,000 but commercial heater with the cast iron header. Being the holiday Inyo was closed so I called them first thing Tuesday morning. They were very helpful and together we decided I didn't need the commercial version and went with the cupro-nickel heat exchanger instead. This saved me a couple hundred off the original order. This was all in Tuesday morning. Thursday the Estes freight company delivered the new heater!! Unbelievable!!

Sine I was basically replacing my old Rapak 206,000 but heater with the new 266,000 on everything lined right up and it only took 15 minutes to hook up the new heater. I paid our local garbage man twenty buck to haul off the old heater (after I stripped it of things like control board, flame rolloff switch etc. that would work on the new one).
I also installed. One-way check valve between the heater outlet and my clorinator to keep the highly chlorinated water from backing up to the heat exchanger and eating it up when the filter turns off.
My experience with Inyo was wonderful and they are the only company I use for pool stuff.

Were these instructions helpful? 


Est. Repair Time

Less than 1 hr

Tools Needed

Screwdriver, Adjustable Wrench, Rubber belt adjustable wrench

1     0

Previous Raypak heater rusted out from age

Written on 6/6/2017 by Guest

Local dealers wanted around $4,600 to install this Raypak model to replace my 7 year old heater that finally met its maker. Ordered it from Inyo who had the best price online. Received it 5 days later and fully installed it myself within 30 minutes minus the LP gas line. Everything was quick and easy due to the plumbing being plug and play given it was the same as my old model. The gas line I could have attached myself in about 20 minutes or less but had a plumber friend install that for me just to remove any chance of a leak and risk leaking out $400 worth of LP that is currently in my tank. $3,000 saved doing it myself. I'm pretty handy but even if your handyman skills are pretty low you could easily tackle this job and save yourself a bunch of money assuming you are replacing a Raypak where you don't need to re-plumb anything.

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Review Summary

 (Average 4.79  out of 5 stars)
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