Quick Overview
Features on all millivolt heaters include rust-resistant water path withpolymer header assembly and a rapid-heat combustion chamber. They are easy to install and maintain, thanks to its low profile, lightweight and CPVC plumbing capabilities
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- Installation
- Size Chart
Toronto Pool Services
Pool Equipment installation services are provided by our partner, Toronto Pool Services.
All installations are performed by certified technicians and are backed by a one-year labour warranty. By submitting this form you will share your information with our partner and they will provide you with a quote by email. You are under no obligation to purchase the product or the installation service. Product prices on torontopoolsupplies.ca do not include installation costs.
Sizing your Heater
| Pool Size w/ 6 ft. Avg. Depth | Volume, Gallons | Volume, Liters | Gas Heater BTU |
| 12' x 24' | 12,960 | 49,000 | 100k - 150k BTU |
| 14' x 28' | 17,640 | 66,800 | 150k - 200k BTU |
| 16' x 32' | 23,040 | 87,200 | 200k - 250k BTU |
| 18' x 36' | 29,160 | 110,400 | 250k - 300k BTU |
| 20' x 40' | 36,000 | 136,300 | 300k - 400k BTU |
| 15' Round | 7,950 | 30,100 | ~100k BTU |
| 18' Round | 9,050 | 34,250 | ~100k BTU |
| 21' Round | 15,580 | 59,000 | 100k - 150k BTU |
| 24' Round | 20,350 | 77,000 | 150k - 200k BTU |
Note: all figures are approximate and are meant to be used as a guideline only. Heater performance may vary depending on weather conditions - wind, shade, etc. For sizing solar and electrical heaters, refer to each individual heater's documentation.
HAYWARD H Series 250K-BTU Millivolt Natural Gas Pool Heater H2501P
Dreaming of the pool is one of the best ways to get through the tough days of winter. But, in the early days of the summer season, the temperature of your pool water may not live up to your fantasties. In Canada, the summer season can be extremely short, and days when the pool is too cold to enjoy makes it even shorter.
One of the best ways to maximize the use of your pool, and to encourage your family to spend more time outside this summer is by installing a heater on your pool. With a touch of warmth, you can extend the usability of your pool by weeks each year, and get the summer season started as soon as the sun comes out. The Hayward Millivolt pool heater provides reliable, durable, and easy-to-use pool heating for inground pool owners.
Why choose the Hayward Millivolt Pool Heater?
Pool heaters operate in difficult environments, and the Hayward Millivolt pool heater has been designed to withstand unbalanced pool water, harsh flow, and tough weather. The rust-resistant water-path and outer casing prevent corrosion over time. The Hayward Millivolt pool heater is also equipped with a cupro-nickel heat exchanger that is more durable than past models. This revolutionary heat exchanger is tough enough to stand up to traditional chlorine pools, or withstand the harsh salinity of saltwater chlorination.
With the Hayward Millivolt pool heater, thousands of pool owners across Canada have extended their swimming season, and relied on their heater for many years of reliable performance.
Reliable and Efficient Pool Heating with Hayward
For some people a pool heater may seem like a luxury that is not necessary for the pool. But when you consider the time, energy, and effort that you put into the swimming season each year, the extra time that a pool heater can add can make it very worthwhile. The Hayward H-Series has been designed for optimum pool heating performance that is easy to use. Whether you're looking for a first heater for your pool, or seeking a replacement for an existing model, the Hayward H-Series natural gas pool heater is an excellent option.
Warranty: 2 Year
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NOTE: Product images are for illustration purposes only and may not exactly match the actual product due to seasonal model, color or design changes. When shopping for parts we strongly recommend to check the SKU or "Part Number" which is listed on each product page. If you are unsure whether this is the correct product or need assistance please contact us.
Just a quick reminder - Toronto Pool Supplies is an online-only store. Our Concord, ON location is a pickup point, not a retail store and we cannot service walk-in customers. If you want to pick up your items in person please place an order online first and we will email you when it's available for pickup.
Hours: Mon-Wed: 9AM-6PM / Thu: 9AM-8PM (Extended) / Fri: 9AM-6PM