Hayward H150 Gas Pool Heater Review
- AboveGroundSplash
- May 21
- 7 min read
Hayward Universal H-Series 150,000 BTU is a top choice for above-ground pool owners who want a gas pool heater that heats fast and holds up to salt systems. This 150k BTU natural-gas heater pairs rapid recovery with a corrosion-resistant cupro-nickel exchanger, low-NOx performance, and simple digital controls — so you get warm water quickly and worry less about maintenance.
Hayward H150 quick verdict
The Hayward Universal H-Series H150 is best for above-ground pool owners who want fast heating from a natural gas pool heater rather than slower, gradual heating from an electric heat pump.
It is a strong option if you want quick warm-ups, reliable recovery after cooler nights, and a durable cupro-nickel heat exchanger that can handle salt systems better than standard copper designs.
It is not the best choice if your main goal is the lowest running cost. For steady temperature maintenance, an electric pool heat pump will usually make more sense. But if you want speed, strong BTU output, and gas-heater performance, the Hayward H150 is a serious option.
Best for: Fast heating and quick recovery
Fuel type: Natural gas on the linked Amazon listing
Main strength: 150,000 BTU gas heating power
Best pairing: Solar cover or insulated pool cover
Main limitation: Higher fuel cost than heat pumps for long daily runtime
Worth it? Yes, if fast heat matters more than lowest operating cost.
This review focuses on the natural gas Hayward H150 model. If your setup uses propane instead, read our Hayward 150K propane pool heater review before choosing.
Specs at a glance:
Is the Hayward H150 the best gas pool heater for above-ground pools?
The Hayward H150 can be one of the best gas pool heater options for above-ground pool owners who want fast heat-up, strong recovery, and a trusted 150,000 BTU heater from a major pool equipment brand.
It is not the best choice for every pool owner. If you want the lowest running cost for daily heating, an electric pool heat pump may be better. If your pool is very large or exposed to cold nights, a higher-BTU gas heater may recover faster.
Where the H150 makes the most sense is for small to medium above-ground pools where fast natural gas heating matters more than ultra-low running costs.
Why an above-ground pool owner should consider this gas pool heater
Above-ground pools commonly lose heat faster (less insulation, more exposed surface), and many owners want quick heat-up times so the pool is usable on cooler days or shoulder seasons. The H-Series 150k BTU is powerful enough to recover temperature quickly compared to small, low-BTU units — that means less pump runtime and more time swimming. The hydraulic design also reduces circulation strain so you don’t necessarily need an oversized pump.
Saltwater & chemical-heavy systems: cupro-nickel heat exchangers resist pitting and corrosion better than plain copper — a big plus if you use a salt chlorinator or run higher sanitizer levels.
Hayward H150 gas heater vs electric pool heat pump
The biggest reason to choose the Hayward H150 is heating speed. Gas pool heaters are usually better when you want to raise the water temperature quickly, recover heat after a cold night, or heat the pool only when you plan to swim.
An electric pool heat pump is usually better if your goal is lower running cost and steady temperature maintenance over the season. Heat pumps work more gradually and depend more on outdoor air temperature, but they can be more efficient for regular use.
Choose the Hayward H150 gas pool heater if you want fast heating, quick recovery, and strong 150,000 BTU output.
Choose an electric pool heat pump if you want more efficient long-term temperature maintenance and do not need rapid heat-up.
For many above-ground pool owners, the best setup is not always one or the other. A solar cover should be used with either option because it helps reduce heat loss overnight and makes every heater work more efficiently.
Sizing guide — is 150,000 BTU right for my above-ground pool?
The safest way to size a gas pool heater is to look at your pool’s surface area, water volume, climate, and desired temperature rise. A 150,000 BTU heater can be a strong fit for many small and medium above-ground pools, but larger pools may benefit from stepping up to a 200,000 BTU model or higher.
If you are not sure how many gallons your pool holds, use our Pool Volume Calculator before choosing a heater size. Getting the pool volume wrong can lead to buying a heater that is either underpowered or more expensive than you actually need.
Every pool is different, but a quick rule of thumb:
Small above-ground pools (≤10,000 gallons): 150k BTU is often more than enough to heat efficiently and recover quickly after usage.
Medium (10k–20k gallons): 150k will perform well; expect faster heat-up and good recovery on cooler days.
Large above-ground or heavily exposed pools (>20k gallons): you may still use 150k, but consider layering with a pool cover (solar or insulated) or pairing with a heat pump / additional heater for seasonal efficiency.
Important factors: location (climate/wind), desired temperature rise, and how quickly you want to recover heat after heavy use. For precise sizing, use the pool volume, target temperature rise, and your local climate — but for most typical above-ground pools, 150k BTU is a solid, fast option.
Below is a very helpful sizing guide by Hayward:
Quick example - if you have a 28ft round above ground pool, the surface area would amount to 619ft (14ft x 14ft x 3.14). In this case, it would be more beneficial to invest in the 200,000 BTU (H200) model (or higher).
Installation & above-ground pool considerations:
Plumbing connections: H-Series models typically use 1½" × 2" unions — confirm your plumbing sizes and adapter needs. Low flow or undersized pumps reduce heat transfer; ensure your pump meets the heater’s minimum recommended flow. The heater has a flow control feature and will not fire up if water is not flowing at the required volume.
Clearances & venting: Follow local codes and the installation manual for venting, gas line sizing, and clearances — gas heater installs must comply with local authority rules. The full service/installation manual contains step-by-step guidance.
Electrical: Requires standard power (110-120V AC power) for controls and ignition.
Salt systems: the cupro-nickel exchanger is designed to tolerate salt pools — still maintain water balance to maximize exchanger life.
Pros & cons — quick snapshot
Pros
Fast, powerful heating (150k BTU) — less wait time to swim.
Cupro-nickel heat exchanger for salt and chemical resistance.
Low-NOx options and industry-friendly hydraulic design.
Digital controls with diagnostic readouts.
Cons
Gas fuel costs can be higher vs. heat pumps for continuous low-temperature operation. (Best used for fast warm-ups or seasonal use.)
Requires proper gas line sizing and professional install to meet codes.
Frequently Asked Questions
Is the Hayward H150 a gas pool heater?
Yes. The Hayward H150 is a gas pool heater in the Hayward Universal H-Series range. The linked Amazon listing on this page is for the natural gas model, but propane versions may also be available separately.
Can the Hayward H150 be used with an above-ground pool?
Yes, the Hayward H150 can be used with above-ground pools when it is installed correctly. You need the right gas supply, plumbing, pump flow, clearances, and code-compliant installation.
Is 150,000 BTU enough for an above-ground pool?
For many small and medium above-ground pools, 150,000 BTU is a strong gas-heater size. Larger pools, exposed pools, or pools that need faster recovery may benefit from a 200,000 BTU model or higher.
Is the Hayward H150 good for saltwater pools?
Yes. The Hayward H150 uses a cupro-nickel heat exchanger, which offers better resistance to corrosion than standard copper. You should still keep water chemistry balanced to protect the heater.
Is a gas pool heater better than a heat pump?
A gas pool heater is better for fast heat-up and quick recovery. A heat pump is usually better for efficient long-term temperature maintenance. The better choice depends on whether you care more about speed or running cost.
Does the Hayward H150 need professional installation?
Yes. A gas pool heater should be installed according to the manual and local codes. Proper gas line sizing, venting, clearances, plumbing, electrical supply, and pump flow all matter.
Should I buy the Hayward H150 or a larger BTU model?
Choose the Hayward H150 if you have a small to medium above-ground pool and want strong gas heating. Consider the H200 or larger models if your pool has a large surface area, loses heat quickly, or you want faster temperature recovery.
Final verdict: should you buy the Hayward H150 gas pool heater?
The Hayward Universal H-Series H150 is a strong choice if you want fast gas heating for an above-ground pool and you have access to natural gas.
It makes the most sense for pool owners who care more about quick warm-ups and strong heat recovery than the lowest possible running cost. The 150,000 BTU output, cupro-nickel heat exchanger, digital controls, and low-NOx options make it a serious gas heater rather than a small seasonal add-on.
It is not the right choice if you want the cheapest heater to run every day. For long, steady temperature maintenance, an electric pool heat pump may be the better fit. But if fast heating is your priority, the Hayward H150 deserves a spot on your shortlist.
Available BTU Options:
150,000 BTU (H150) — Best for most above-ground pools and quick recovery.
200,000 BTU (H200) — Faster recovery for mid-sized pools.
250,000 BTU (H250) — For larger residential pools or faster heat demand.
400,000 BTU (H400) — Commercial or very large residential setups.
Compare before you buy
If you are still choosing a pool heater, these guides can help:
👉 Hayward 150K propane pool heater review — choose this if your setup uses propane instead of natural gas.
👉 Heat Pumps & Solar Covers — compare above-ground pool heating options.
👉 Aquastrong 35,000 BTU pool heat pump review — better if you want efficient 120V heat-pump heating for a smaller pool.
👉 Aquastrong 55,000 BTU pool heat pump review — better if you want a stronger electric heat pump for a larger above-ground pool.
👉 DR. Heater DR-900HP review — better if you want a high-output 90,000 BTU inverter heat pump.
👉 Warm Up Your Pool — useful if you want cheaper ways to reduce heat loss and keep water warmer.
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