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Gas Pool Heaters

Raypak Digital

Model: R Series LOW NOX

GAS Pool Heaters – Discover quality alternative heating options
to be sure that Gas Heating is the right choice for your pool…

Were you aware propane or natural gas has the highest operating
cost, and is the least efficient / cost effective way to heat a pool?

If you require rapid heat up, constant temperature regardless of
outside temperature, or you are heating a spa or hot tub, then the
gas heater below may be right for you.

ALERT » View other higher efficiency options
. Side-by-side major heating systems comparison guide reviews
. the details on Gas Heaters, and how they compare to the two
. other major heating methods - Heat Pumps and Solar

HELP » Contact Customer Support

. Toll-Free help line offering system selection support 


RayPak low nox gas heater

Raypak Digital Low NOx
has all the Raypak Digital features plus it has low NOx emissions and fan assisted combustion. 

Raypak Digital Low NOx is one of the Energy Supermarket's top selling brands, its advanced design engineered and built to last, earns a 5 plus star rating in our Consumer Value guide!

Raypak offers a complete line of gas heaters to fit almost every application. Inside and out, the Raypak Digital Low NOx is the result of over 50 years experience in the design, engineering and manufacturing of all types of residential and commercial pool, and water heaters.  So dive in and take a look at the Raypak Digital Low NOx that can meet your exact needs. 

VIEW » Models Specifications

VIEW » How to Choose the Right Size Heater


Enjoy your pool...
Extend your swim season!

Your pool and spa are long term investments that you, your family and friends will enjoy year after year.
Now there is an easier way to enjoy that investment more often, more reliably and more efficiently throughout the year...

The Raypak Digital Low NOx

Built Raypak tough.
Built to last.


Raypak gas heaters will effortlessly raise your pool's temperature well into the 80-90 degree range, and/or your spa to 104 degrees, generate a rapid heat-up, plus ensure a constant temperature regardless of weather conditions.

In addition to warming the water, the swimming season can be extended in cooler climates by as much as 50 percent. Raypak units require little to no maintenance, and typically last 5 to 10 years, or more.



Raypak Digital Low NOx Features

Low Emissions
The Raypak Low NOx gas heater complies with the most stringent state and county emissions laws. NOx emissions are less than 40 nanograms per joule.

VIEW » What is NOx?

Fan Assisted Combustion
The Raypak Low NOx design uses a fan to deliver cool, controlled combustion air to the sealed burners. Other brands use a fan to pull hot flue gases through the heater. The Raypak design outperform others during cold starts and provides longer component life.
Wind Resistant

Built-in Wind Resistant Design
The Raypak Digital Low NOx 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 Raypak Digital Low NOx design. No need for fans to combat drafting problems, the Raypak Digital Low NOx 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.


. Smart Design
One look will tell you that the Raypak Digital Low NOx 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 Raypak R operating even in extreme wind conditions and downdrafts.

. Polytuff Powder Coating
The Raypak Digital Low NOx 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 Low NOx 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

. All Copper Fin Tube Heat Exchanger
All Raypak Digital Low NOx gas heaters come standard with integral copper finned tube. This means that the fin tubing is made from one piece of extruded copper tube. Since the fins are integral to the tube, maximum heat transfer is attained. Every Raypak Digital Low NOx has the same robust design tube bundle that we use in our large gas commercial boilers.

. Unitherm Governor
Raypak engineered the Unitherm Governor specifically for pool heater applications, regulating low temperature incoming water, to help reduce condensation. The Unitherm Governor automatically regulates the water flow to help keep the water temperature in the heat exchanger above 105°F. Both water temperature and water flow rate are controlled to eliminate condensation, sooting, and scale buildup that can shorten heater life.

. Automatic Bypass
No need to worry about large pumps or high flow systems. The Raypak Digital Low NOx comes with an automatic bypass built into the header. You'll find that the Raypak Digital Low NOx delivers the industry's lowest pressure drop and highest water flow rate - up to 125 gallons per minute - exceeding the maximum recommended for 2" plumbing systems. More hot water moves through faster and more efficiently.

. Stainless Steel Tube Sheet
Stainless steel tube sheets are used on all Raypak Digital Low NOx heaters that use the Polymer resin headers. This allows for a completely nonferrous waterway leaving your pool truly rust-free.

. CPVC 2" Water Connections
Standard with every Raypak Digital Low NOx is a set of 2" slip fit CPVC water connections to make your installation secure and effortless.

. Fuel Efficient
Efficient? You bet. Energy-smart Raypak heaters consistently achieve the highest efficiency ratings and the Raypak Digital Low NOx is no exception. It exceeds all federal and state standards.

Combustion Chamber

. Burner Tray
Every Raypak Digital Low NOx burner tray is built to last. From the stainless steel burners to the aluminized metal used in the heat sensitive areas. In the event that anything should happen to your burners they can be quickly and easily serviced. One more reason why the Raypak Digital Low NOx is made to take the work load year after year.

. Fire Tile
A ceramic fiber combustion box keeps your Raypak Digital Low NOx running efficiently and keeps the outside jacket cool. By using this space-age material the Raypak Digital Low NOx won't retain residual heat after it is turned off, allowing it to be installed without the use of costly metal heat sinks.


. ISO 9001
Raypak is proud to be an ISO 9001 registered manufacturing plant. One more reason why Raypak is number one in the heater industry today.

. End-of-Line Test
Every Raypak gas pool heater is plumbed and test fired before it is put in the carton. This ensures that your heater will fire right out of the box and continue to give you years of trouble-free operation.

. Quality Checkpoints
The Raypak assembly process includes 6 final assembly quality checkpoints that help to ensure that each and every Raypak Digital Low NOx is built correctly, and built to last.

. CSA Certified
All of Raypaks products are CSA certified. Raypak Digital Low NOx is tested by CSA to the ANSI Z21.56 standard.

. Microprocessor Controlled Thermostat
The Raypak Digital Low NOx 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 Low NOx 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 Low NOx 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 Low NOxl and be integrated into the pool control system of your choice.

. Electronic Ignition
Raypak Digital Low NOx heaters come standard with intermittent spark ignition pilot safety controls. What this means is that the pilot only comes on when there is a call for heat. This is a more energy efficient way to control you heaters gas usage by not having a standing pilot. Raypak has been using the same reliable electronic pilot ignition design for over 20 years.

VIEW » Raypak Digital Technical Specifications - PDF format



. Use in high wind areas requires a High Wind Stack.
. Indoor installation requires Indoor Draft Hood.
. [Both purchased separately]



Raypak Digital LowNox Specification

Model R267A R407A
"A" Cabinet Width 23" 29"
"B" Flue Diameter 7" 9"
"C" Indoor Drafthood 62" 64-1/2"
"J" 11" 12-5/16"
Gas Conn. 3/4" 3/4"
Water Conn. 2" 2"


265,000 405,000
Millivolt Ignition - Natural
Actual BTUs
261,000 405,000
Millivolt Ignition - Propane
Actual BTUs
265,000 405,000
Electronic Ignition - N or P
Actual BTUs
265,000 405,000

• How to Choose the Right Size Heater:
• Proper heater size is based on the time required to heat pool or spa.
• If water is heated for each intended use, energy-saving rapid
• heating may be appropriate.
• If water is gradually heated to the desired temperature and then
• maintained at that temperature, a smaller heater may be acceptable.

Determine proper heater size using the following formula:
_____ desired water temperature (ºF)
_____ average air temperature (ºF)
_____ required temperature rise (ºF)
_____ req. hrs. to heat pool/spa to desired water temp.
_____ required temperature rise per hour (ºF)
square feet
Heater Model
Desired Temperature Rise in ºF per hour
Heater Model
Desired Temperature Rise in ºF per hour



Gas Heater Installation - Upon delivery of unit,
installation of a heater can be performed by homeowner, but The Energy SuperMarket strongly recommends the installation of any new or replacement gas heater be done by trained personnel, a licensed and insured contractor, or by a pool/spa professional.

Gas Connections - Actual hook-up of the gas connections and the turn-on of the gas itself are highly recommend, and in most states legally required, to be performed by a licensed and insured plumber, or a gas utility company employee.

. Critical WarningDo not attempt to connect gas lines or turn-on gas yourself! Serious personal injury, damage to the unit and/or home, fire, or explosion could result !!!


Function: Warms pool/spa to 80-90° plus extends season
Benefits: Maximizes your pool/spa investment!

Product Applications:
. Residential and light-duty commercial installations
. Do-it-yourself project; average three hour installation
. Change-out feasible by handy-person / hand tools
. Gas hook-up performed by a licensed professional
Easy to read step-by-step installation manual
. Excellent for pools/spas at residential, condo, resort,
. hotel, motel, and vacation home locations
. Supplementing a gas heater with a solar pool cover
. greatly enhances its performance, plus reduces
. energy costs up to 70 percent - thereby saving
. hundreds of dollars per year in pool heating costs!

Product Features:
. System utilizes existing pool pump to circulate water
. Swimming season extended up to 50% in cool climates
. Effective systems perform year round in warm climates
. Heats spa to toasty 104 degrees - maximum legal limit
. Warranty - 5 Year Manufacturer Warranty
VIEW » RayPak Warranty - PDF format

. Proper unit selection supported by customer service agent
. Installation supported by engineering tech assistance
. Toll-Free help line and/or online e-mail tech support
. Worldwide shipping available - delivered to your doorstep
. Lowest factory direct pricing available anywhere! 
. Guaranteed.

Product Manufacturer: Raypak

What is NOx?
NOx is the generic term for a group of highly reactive gases, all of which contain nitrogen and oxygen in varying amounts. Many of the nitrogen oxides are colorless and odorless. However, one common pollutant, nitrogen dioxide (NO2) along with particles in the air can often be seen as a reddish-brown layer over many urban areas.

Nitrogen oxides form when fuel is burned at high temperatures, as in a combustion process. The primary sources of NOx are motor vehicles, electric utilities, and other industrial, commercial, and residential sources that burn fuels

Where does it come from?
NOx form when fuel is burned at high temperatures, as in a combustion process. The primary sources of NOx are motor vehicles, electric utilities, and other industrial, commercial, and residential sources that burn fuels. Utilities: 27% Motor Vehicle: 49% Industrial/Commercial/Residential: 19% All Other Sources: 5%

NOx is one of the main ingredients involved in the formation of ground-level ozone, which can trigger serious respiratory problems. NOx:

Reacts to form nitrate particles, acid aerosols, as well as NO2, which
. also cause respiratory problems.
. Contributes to formation of acid rain.
. Contributes to nutrient overload that deteriorates water quality.
. Contributes to atmospheric particles, that cause visibility impairment
. most noticeable in national parks.
. Reacts to form toxic chemicals.
. Contributes to global warming.

NOx and the pollutants formed from NOx can be transported over long distances, following the pattern of prevailing winds in the U.S. This means that problems associated with NOx are not confined to areas where NOx is emitted. Therefore, controlling NOx is often most effective if done from a regional perspective, rather than focusing on sources in one local area.

NOx Emissions are increasing
Since 1970, EPA has tracked emissions of the six principal air pollutants - carbon monoxide, lead, nitrogen oxides, particulate matter, sulfur dioxide, and volatile organic compounds. Emissions of all of these pollutants have decreased significantly except for NOx, which has increased approximately 10 percent over this period.

Health and Environmental Impacts of NOx
NOx causes a wide variety of health and environmental impacts because of various compounds and derivatives in the family of nitrogen oxides, including nitrogen dioxide, nitric acid, nitrous oxide, nitrates, and nitric oxide.


NOTICE:  Southern CA and TX law requires Low Nox units. 
Units delivered and installed in these areas must select Low Nox. 

PDF Download

Install Manual
Raypak Brochure
Technical Data
Raypak Warranty

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Extend your swimming season

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