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Pentair
Pentair MasterTemp Natural Gas Pool Heater

Pentair MasterTemp Natural Gas Pool Heater

4.2(111 ratings)

Best price now

$1,681.02at FamilyPoolFun.comObserved at 3:43 PM

Compared across 3 stores. Prices are checked against each store and labelled with when.

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Our take on the Pentair MasterTemp Natural Gas Pool Heater

The Pentair MasterTemp is a natural gas pool heater rated at 250,000 BTU, built for fast heat-up on most residential pools. It uses a standard copper heat exchanger (a cupro-nickel HD version is also offered), a digital control pad, and a rustproof exterior. It is certified for low NOx emissions and approved for installation on combustible surfaces. The best new price is $1,681.02 at FamilyPoolFun.com as of November 7, 2026, with four stores listing it new.

Best forOwners of medium to large in-ground poolsHomeowners with natural gas service and 2-inch PVC plumbingBuyers replacing an older gas heaterRegions with low NOx emissions rules
Pros
  • 250,000 BTU heats a pool quickly
  • Digital controls with diagnostic readout
  • Rustproof exterior holds up outdoors
  • Low NOx certified and combustible-surface approved
  • Standard copper exchanger keeps the price lower than cupro-nickel models
Cons
  • Standard copper exchanger is vulnerable to corrosive pool chemistry
  • Requires 120/240V power plus a gas line at install
  • Venting and altitude limits (10,000 ft) restrict some sites
  • Not a heat pump, so gas bills rise with heavy use

Pentair MasterTemp Natural Gas Pool Heater prices at every store

  • FamilyPoolFun.comNew

    In stock

    $1,681.02Observed at 3:43 PM
    Visit FamilyPoolFun.com
  • PoolSuppy4LessNew

    In stock

    $3,049.00Observed at 3:43 PM
    Visit PoolSuppy4Less
  • BestPoolShop.comNew

    Out of stock

    $3,479.00Observed at 3:43 PM
    Visit BestPoolShop.com

Also available at

  • PoolZoom.comCheck price at PoolZoom.com
  • Vita Pool SupplyCheck price at Vita Pool Supply
  • eBayCheck price at eBay

Store links may earn us a commission.

Pentair MasterTemp Natural Gas Pool Heater price history

Lowest price we've seen: $1,681.02 on Nov 7 at FamilyPoolFun.com. Tracked across 5 stores since Nov 7.

What reviewers say

  • 4.2 / 5111 ratings

Owners rate the MasterTemp well overall, praising fast heating and simple controls. Complaints center on heat exchanger corrosion and part failures after a few seasons, often tied to water chemistry.

What people mention
  • Heat speedPraisedOwners say the pool warms noticeably faster than with their old heater.
  • Heat exchangerCriticisedCorrosion and leaks in the copper exchanger are the most common failure reported.
  • ControlsPraisedThe digital panel and diagnostic codes make setup and troubleshooting straightforward.
  • DurabilityMixedThe cabinet holds up, but internal parts like sensors and the ignition module draw complaints.
  • NoisePraisedReviewers describe operation as quiet for a gas heater of this size.
  • InstallationMixedStraightforward for pros, but gas, electrical and venting requirements trip up DIY buyers.

Specifications

Heating Type
Gas
Power Source
Natural Gas
Voltage
240V
BTU Output
250,000 BTU
Energy Efficiency
84% efficient (Standard copper heat exchanger)
Heating Capacity
250,000 BTU
Heat Exchanger Type
Standard copper heat exchanger, Heavy-duty (HD) cupro-nickel heat exchanger

Questions and answers

Is the MasterTemp worth it over a heat pump?
A gas heater like this heats far faster and works in cold air, but costs more to run per hour. A heat pump is cheaper to operate but slow and ineffective in cold weather.
Should I get the cupro-nickel heat exchanger?
Yes if your water chemistry is hard to control or you use a salt system. Cupro-nickel resists corrosion better than the standard copper exchanger and lasts longer.
What size pool will 250,000 BTU heat?
It suits most residential pools up to roughly 20,000 to 25,000 gallons for regular heating. Larger pools or fast spa heat benefit from the 400,000 BTU model.
What does installation require?
A natural gas line sized for 250,000 BTU, 120/240V power, and 2-inch PVC plumbing. It must meet venting and low NOx rules, so a licensed installer is the safe route.
When is the price lowest?
Pool heater prices tend to dip in fall and winter, outside swim season. The current best is $1,681.02 at FamilyPoolFun.com as of November 7, 2026.
Does it work at high altitude?
It is rated for sites up to 10,000 ft. Above that, the gas-to-air mixture needs adjustment or the heater may not fire reliably.
Where is the Pentair MasterTemp Natural Gas Pool Heater cheapest?
At FamilyPoolFun.com, for $1,681.02, as of our latest check.
What do buyers say about the Pentair MasterTemp Natural Gas Pool Heater?
Rated 4.2 out of 5 from 111 ratings.
Where can I buy the Pentair MasterTemp Natural Gas Pool Heater?
6 stores we checked sell it, including FamilyPoolFun.com, PoolSuppy4Less, BestPoolShop.com, PoolZoom.com, Vita Pool Supply.

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All Pentair deals and products →
Flow Rate
High flow
Pool Size
MasterTemp heater for any pool size
Pool Type
Pool
Control Type
Digital
Depth
21 L
Height
28 H
Width
21 W
Durability Features
Rustproof exterior
Electrical Requirements
120 / 240V, Single Phase
Installation Type
Approved for installation on combustible surfaces
Plumbing Connection Size
2" PVC
Location Requirements
Maximum altitude of 10,000 FT
Venting Requirements
Meets Low NOx emissions standards
Heating Time
Fast heat up
Noise Level
Quiet operation
Safety Features
Advanced ignition control module with flame strength sensor
Certifications
Certified for low NOx emission