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Pentair MasterTemp Pool and Spa Heater 125k BTU

Pentair MasterTemp Pool and Spa Heater 125k BTU

Pentair Master Temp Pool and Spa Heater 125k BTU

The remarkably affordable new MasterTemp 125 heater gives you the energy savings and advanced operating features that were only available from much larger heaters.

Purchase the Pentair MasterTemp 125 Pool & Spa Heater


The remarkably affordable new MasterTemp 125 heater gives you the energy savings and advanced operating features that were only available from much larger heaters. With its revolutionary pre-mixed gas combustion technology, the MasterTemp 125 heater offers 82% thermal efficiency – the highest of any heater in its category. Its 1-1/2″ plumbing is ideal for smaller applications, including aboveground pools, spas and inground pools up to 15,000 gallons. Featuring the first ever rotating, digital display offered in its class, the MasterTemp 125 heater provides valuable information conveniently and at the touch of a button. Plus, its lightweight, compact design makes the MasterTemp 125 heater easier to install than any other heater in its class – reducing labor costs which saves you money.


  • 82% energy efficiency is highest in its class.
  • High-performance, affordable heating with premium features.
  • 1-1/2″ plumbing – ideal for smaller bodies of water up to 15,000 gallons.
  • Pre-mixed combustion technology for ultra-fast heat-up.
  • Rotating digital display – the first in its price category – provides fast, easy access for programming and monitoring.
  • Certified for low NOx emissions.
  • Certified for outdoor and indoor – vented installations.

Raypak Pool and Spa Heaters

Raypak Pool and Spa Heaters

raypak pool heaters

Order Raypak Pool and Spa Heaters

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 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 heaters.

raypak pool heater basic data


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

Wind-Resistant Design
No need for fans to combat drafting problems under normal conditions. This heater is designed to draft naturally in 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. It delivers uninterrupted heating performance regardless of falling leaves, wind, airborne debris, rain, downdrafts, updrafts, sleet, snow, etc.

Control Options
These units are available with two different control designs to meet your requirement.  They are available with digital electronic ignition, or as a millivolt design. The digital system (pictured) requires external power (120VAC or 240VAC) and generates a pilot only when there is a call for heat.  It provides simple setup and easy programming, as well as easy-to-understand diagnostics and simple connections to remote controls. The millivolt ignition system does not require external power.  It generates its’ own current internally, with a small thermocouple driven by the constant pilot. The millivolt ignition system is not available in California for natural gas units.

Polymer Headers
Polymer headers prevent rust stains from harming your pool’s surface, giving you years of trouble-free swimming pleasure.

Manufactured under Patent No. 3,623,458.

All-Copper-Fin-Tube Heat Exchanger
The fin tubes of the heat exchanger are each made from a single piece of extruded copper. This integral-fin design allows maximum heat transfer to be attained and maintained. Cupro-nickel is also available as an optional upgrade.

Stainless Steel Tube Sheet
Stainless steel tube sheets are used on all Raypak heaters with the polymer headers. This allows for a completely nonferrous waterway, leaving your pool truly rust-free.

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

Condensation Protection
The Unitherm Governor inside the header helps reduce condensation from low inlet water temperatures. It 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 build-up that can shorten heater life.

High Flow Rates
The Raypak gas heater comes with an automatic bypass built into the header.  You’ll find that the heater is capable of handling water flow at a rate up to 125 GPM.

Burner Tray
Every burner tray is built to last, from the stainless steel burners to the aluminized metal used in the heat sensitive areas. Innovative design allows for the easy removal of the tray and burners for servicing.

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

Energy-smart Raypak heaters consistently achieve the highest efficiency ratings.  They exceed all federal and state standards.

Available for natural gas or propane.

Please note that these units are not designed to meet the emissions regulations in areas requiring Low NOx levels.

Reduce input 4% for each 1000 feet above sea level when installed above 2000 feet elevation.

Raypak 206a-406a Pool Heater Manual

Aquasol Inground Pool Solar Heating System – 2″ Systems

Aquasol Inground Pool Solar Heating System – 2″ Systems

aquatherm aquasol solar pool panels

Order Aquasol Solar Panels and Save on Pool Heating!

The Aquasol solar heating system is a High Quality Polypropylene panel system that’s available in 4’x8′, 4’x10′, or 4’x12′ size panels. The standard system comes with 2″ headers making them perfect for any installation including replacement of Fafco solar panels etc. Piping is purchased locally. Just determine the surface area of your pool and purchase 50-60 % of the pool surface area in collector area. Example: A 400 sq. ft. surface area pool would use 6 – 4′ x 10′ solar collectors for a total panel area of 240 sq. ft.

Any size system can be shipped economically. Just pick the panel size that best fits your needs and a System Kit (1 required with each system). Add-A-Row Kits are available if the panels can’t be laid out in a continuous row. For the utmost in convenience and maximum heating we offer the Pentair & Goldline Automatic Controllers as an upgrade to your system.

Note: If you’re not going to use one of our Automatic Control Systems you will need to purchase a Manual Control Valve to operate your solar panels.

Our Aquasol system comes with a 10 Year Limited Warranty so you can buy with confidence.

Aquasol panels are IAPMO and NSF50 listed for all areas for both residential and commercial installations.

Premium grade 4 foot width panels, not the lesser quality harder to install 1 foot and 2 foot width panels sold by many companies.

Have questions concerning solar heating your pool?
Click Here for help from our Solar Heating Experts

Click here to View the Aquasol Installation Manual

Click Here For Aquasol Parts & Accessories.

Click Here For Aquasol Tech Sheet Data

Click Here For Help Selecting The Right Pool Solar Heating System.

Click Here For The Aquasol 10 yr Warranty.

Click Here For The Aquasol Color Brochure.


Pool and Spa Heater Options

Pool and Spa Heaters

A pool heater heats up the temperature you want for the water in your pool. We carry many different types of Pool Heaters. The three main types of Pool Heaters are Solar Pool Heaters, Gas Pool Heaters, and Swimming Pool Heat Pumps.

Solar Pool Heaters are heaters that collect energy from the suns heat, which is transferred into your swimming pool water heating the pool. Depending on the size of your pool, where you live and the average outside air temperature (a properly sized Solar Heater will increase the temperature of your pool by 10-15 degrees), a Solar Pool Heater may be the right choice for you. Another popular pool heating method would be Gas Pool Heaters. The Gas Pool Heaters are great for heating up your pool during cool periods or in the evening for a spa. Gas pool heaters have the highest specific output, so for occasional pool heat-up they are by far the fastest method of pool heating. As the name implies, Gas Pool Heaters run off Natural Gas or Propane. A Propane Pool Heater takes fuel from a propane tank, while the Natural Gas Pool Heaters need a line for fuel. Costs Monthly will depend on the usage and latest fuel prices for either the Gas Pool Heaters, or Propane Pool Heaters.

Lastly, we have our Swimming Pool Heat Pump. The Swimming Pool Heat Pump absorbs the heat from the surrounding ambient air; which is then transferred via a heat exchanger to your pool water. Heat pumps are powered by electricity, but as the air is heated by the sun, the heat pump is able to absorb that heat and transfer it into your pool water. Check into each Pool Heater and brand for more details. We carry many different brands of Pool Heaters such as Pentair Master Temp, Sta-Rite Max-E-Therm, Jandy Legacy LRZE & LRZM, Raypak Digital, Pentair Ultra Temp, Jandy LXi, Jandy Hi-E2, Jandy EE-Ti Heat Pumps, Raypak Digital ASME Comm, and Hayward Universal H-Series Pool Heaters.

In Ground Pool Heaters Above Ground Pool Heaters Pool Heat Pumps In Ground Pool Solar Above Ground Pool Solar
in ground pool heaters above ground pool heaters pool heat pumps
Browse Heaters Browse Heaters Browse Heat Pumps Browse Solar  Browse Solar

Which Pool Heater will be more effective for you and the environment you live in? Best Buy Pool Supply will help you find your perfect pool heater today. The easy link below can be used for assistance.

Which heater is best for my pool? The answer is: whichever heater is least expensive to operate. Depending on where you live, electricity can be very expensive or inexpensive. The same goes for gas. Natural gas can be very expensive or inexpensive. Propane can be very expensive or inexpensive. If you live in an area where you get a lot of sunlight, solar is the way to go. Your goal with the heater is to maintain a preferred temperature for swimming. The best way to achieve this is by using the least expensive heater available to maintain the temperature that you prefer. You can start by comparing pricing with your utility companies. Contact your gas company and find the costs involved with running a natural gas line. Propane heaters burn 1 gallon per hour per 100,000 BTU. A 400k BTU heater will burn 4 gallons per hour.

Which heater is best for my spa? The answer is: a gas heater. More specifically, the largest gas heater you’re willing to pay for. The reason is: the larger heater you buy, the faster it will heat up the spa. Do you want to wait 30 minutes to get into the spa or do you want to wait two hours? This is where personal preference becomes important. Buying a smaller heater will be less expensive to operate and maintain but will have a longer heat up time. If you don’t mind waiting 2 hours, buy a smaller heater.

What are the differences between gas, electric, and solar heaters? Gas heaters can generate heat all year long and are not limited by weather. Gas heaters are preferred for spas due to faster heat up times. Electric heat pumps work similar to solar due to being limited by weather. These two heating options can only generate a certain amount of heat based on the ambient air temperature. Heat pumps and solar generate heat over time up to a certain amount. Generally the amount is 15 degrees above ambient air temperature. The larger size heat pump you have and the larger solar panel system, the faster you can get to 15 degrees. Smaller heat pumps and solar panel systems take longer to generate the 15 degrees.

What types of heaters are available for pools? There are three types of heaters: Gas, Electric, and Solar. Gas heaters require a natural gas line or propane line. Electric heat pumps require a dedicated circuit. Solar panels are installed either on the roof, for inground pools, or alongside an aboveground pool.

What size heater do I need for my pool?

What size heater do I need for my spa?