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Common Questions About Pool Heaters

• WHAT IS THE DIFFERENCE BETWEEN A GAS HEATER AND A HEAT PUMP?

  The main difference is speed vs. efficiency:

  • Gas Heaters: Use natural gas or propane to create heat. They are the fastest way to warm a pool—perfect if you only swim on weekends or want to heat a spa quickly.

  • Heat Pumps: Use electricity to capture heat from the outside air and transfer it to the pool. They take longer to heat up but are incredibly energy-efficient, often costing a fraction of what gas does to maintain a constant temperature.

• WHAT SIZE GAS HEATER DO I NEED: 200, 250, or 400 BTU?

  For most standard residential pools in Ontario, a 250,000 BTU heater is the perfect sweet spot for balancing heating speed and efficiency. However, if you have a larger pool or want rapid, on-demand heating, upgrading to a 400,000 BTU unit is an excellent choice.

  • The Gas Line Catch: You cannot simply swap a small heater for a massive one. Upgrading to a larger heater (like 300k or 400k BTU) often requires a larger underground gas line to supply enough fuel. If your line is too small, the heater will starve for gas and fail to operate safely.
  • Safety First: Because gas lines and pressure calculations are complex, our in-house certified gas technicians will evaluate your existing setup to ensure your new heater runs safely and efficiently.

  Not sure what size heater your current gas line can handle? Contact us and we can help!

• HOW MUCH WILL A HEATER ACTUALLY EXTEND MY SWIMMING SEASON?

  In our climate, a professional heater can easily add 2–4 months to your swimming year. You can open your pool as early as April and keep it comfortably warm well into October—long after the neighbors have put their covers on.

• CAN A POOL HEATER REALLY BE ENGERGY EFFICIENT?

  Yes. Modern high-efficiency gas heaters are designed with cupro-nickel heat exchangers that transfer heat faster and resist corrosion. Heat Pumps are even more efficient, acting like a reverse air conditioner to provide “free” heat from the air. Using a solar blanket at night will also help retain up to 75% of that heat!

• HOW LONG DOES A POOL HEATER TYPICALLY LAST?

  With proper water chemistry and annual maintenance, a high-quality heater from brands like Hayward or Pentair typically lasts 8–12 years. Keeping your pH and alkalinity balanced is the #1 way to protect the internal heat exchanger from damage.

• WHICH BRANDS OF GAS POOL HEATERS DO YOU RECOMMEND FOR ONTARIO POOLS?

  At Crush Pools, we highly recommend and carry trusted, industry-leading brands like Pentair and Hayward for gas pool heating. Models like the Pentair MasterTemp and Hayward Universal H-Series offer exceptional reliability, energy efficiency, and fast heating capabilities.

  • Perfect Sizing: We carry a full range of sizes, from 200 BTU to 300+ BTU outputs, to ensure your heater perfectly matches your pool’s water volume.
  • Expert Installation: Getting your heater professionally installed ensures safe gas connections and protects your extended manufacturer’s warranty.

  Ready to extend your swimming season? Browse our top-rated Pentair and Hayward Gas Heaters and add professional installation at checkout!

• CAN I CONTROL MY POOL HEATER FROM MY PHONE WITH THE HAYWARD OMNIX SYSTEM?

  Yes! The new Hayward Universal H-Series gas heater line comes with built-in OmniX intelligence, allowing you to control your pool’s temperature directly from an app on your smartphone without needing a complex central control panel.

  • Standard Bluetooth Control: Right out of the box, the heater connects to your phone via Bluetooth. This means you can turn the heater down or shut it off completely from the comfort of your living room after a late-night swim—no more trekking out to the equipment pad in the dark!
  • The Wi-Fi Gateway Upgrade: By adding the optional OmniX Gateway, you can control your pool from virtually anywhere, not just within Bluetooth range. You can easily turn the heater on while you are sitting at work so the pool is perfectly warm by the time you get home.

  Bring your pool heating into the modern age! Shop our lineup of Hayward FDN OmniX Gas Heaters and add smart convenience to your backyard.