Pentair MasterTemp 125 High Performance Heater 125,000 BTUs, Natural Gas | EC-462024
Pentair
SKU: EC-462024
Pentair MasterTemp 125 Natural Gas Pool & Spa Heater — Model EC-462024
The Pentair EC-462024 is a compact, high-efficiency natural gas heater designed to quickly and reliably heat residential pools or spas. Its portability and energy-efficient design make it an excellent choice for smaller pools, above-ground pools, or spas up to approx. 15,000 gallons.
Key Features
- 125,000 BTU heating capacity — delivers powerful heat output for small-to-medium pools.
- High thermal efficiency (~82%) — maximizes heat output while reducing fuel consumption.
- Compact, lightweight design — easier to handle, ship, and install than larger heaters.
- Pre-mixed gas combustion technology — provides fast heat-up times so you get warm water quickly.
- 1½″ plumbing connection — compatible with standard pool plumbing for small-to-medium pools and spas.
- Digital control panel with rotating display — user-friendly and easy to program regardless of installation orientation.
- Certified low-NOx emissions and suitable for indoor or outdoor use (with proper venting) — environmentally responsible and versatile.
- Durable, corrosion- and UV-resistant housing for long service life outdoors.
Specifications
- Manufacturer: Pentair
- Model / Part Number: EC-462024 (MasterTemp 125 Natural Gas Heater)
- Heat Output: 125,000 BTU
- Recommended Pool/ Spa Capacity: Up to ~15,000 gallons
- Plumbing Connection: 1½″ (standard PVC pipe compatible)
- Fuel Type: Natural gas (Low-NOx certified)
- Efficiency: Approximately 82% thermal efficiency
- Ignition: Electronic / pre-mixed gas combustion
- Housing: Weather-resistant, corrosion- and UV-resistant outer shell
- Dimensions (approx.): Compact footprint suitable for limited-space equipment pads
Installation & Usage Notes
Ensure your pool plumbing and gas supply meet the heater’s requirements before installation. Position the unit on a stable, level pad with proper ventilation if installed outdoors or indoors. Connect the 1½″ plumbing and natural gas supply per local codes, and configure the digital controller for your desired water temperature. For best performance, maintain proper water flow and periodically inspect the heater and connections.
Why Choose the MasterTemp 125 (EC-462024)
If you’re heating a small- to mid-size pool or spa — especially one up to ~15,000 gallons — the EC-462024 premium natural-gas heater offers a powerful, efficient, and space-saving solution. Its quick heat-up, high efficiency, and ease of installation make it an ideal heater for residential pools where economy, reliability, and performance matter.
Questions about returns? View our return policy.
Hours Of Operation:
Monday - Friday: 7:00 am to 5:00 pm Phoenix Time
Saturday: 8:00 am to 2:00 pm
Sunday: Closed
- We do not ship on Saturday or Sunday.
- Orders totaling more than $300 will require signature confirmation upon delivery.
- We process and prepare orders for shipment within 1 business day. Please note that many other pool supply retailers require 3–5 days of handling time before shipping.
- Orders placed after 1:00 pm Phoenix Time may not be eligible for same-day shipment.
- Expedited shipping options are available at checkout.
Return Policy:
- Products that are received damaged will receive a refund in store credit.
- Most products are eligible for return within 30 days of receipt, except where noted below.
- To initiate a return, please complete an RMA form prior to sending your item back.
- Original shipping costs are non-refundable and will be deducted from the return credit.
- Items returned missing accessories or original packaging, or that are not in the same condition as received, may be subject to a restocking fee of up to 100% depending on the condition of the item upon return.
- Some returns will be charged an automatic 15% restocking fee.
- We are unable to issue refunds for items that have been damaged or rendered inoperable due to installer error.
- Please complete the return form to receive your RMA number and return shipping label.
- Chemical products are not eligible for return under any circumstances.
- The Pentair Colorsync 618031 is not eligible for return.
- Pool cleaners are not eligible for return.
- Opened seals and o-rings are not eligible for return.
- Capacitors are not eligible for return.
- Plastic popup tools are not eligible for return.
- Automation components and circuit boards are not eligible for return.
- If a light is returned due to a reported malfunction and is found to be fully operational upon testing, return shipping costs and a restocking fee will be deducted from the refund.
- Orders refused at the time of delivery will be subject to the original shipping costs being deducted from the refund.
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