Pool Heater Installation & Repair Across Long Island
An unheated pool on Long Island is comfortable for maybe eight weeks a year, July and August if the weather cooperates. A pool heater changes that math completely: warm water by Memorial Day, comfortable swims past September, and a spa that's actually hot when you want it. All Island Comfort installs and repairs gas and heat pump pool heaters across Suffolk and Nassau Counties, and here's what sets us apart from the pool companies: we're the gas contractor too. We size and run the gas line and install the heater as one job, with one crew and one set of permits.
Family-owned in Wading River since 2004, licensed and insured, never subcontracted. Whether your old heater won't ignite, your new pool needs its first heater, or you're weighing gas against a heat pump, we'll give you a straight answer and a written price before any work starts.
- Gas Pool Heater Installation
- Heat Pump Pool Heater Installation
- Pool Heater Repair (All Major Brands)
- Pool Heater Replacement & Upgrades
- Gas Line Sizing & Installation
- Dedicated Electrical for Heat Pump Models
- Spa & Hot Tub Heater Service
- Fall Winterization & Blow-Outs
- Spring Startup & First-Fire Checks
- Permits & Inspections Handled
Call 631-591-2289 for pool heater service anywhere on Long Island, or request a written estimate online.
Pool Heater Down Mid-Season?
Don't lose swim weeks waiting on a pool company's service backlog. Call us and we'll diagnose the heater, quote the fix in writing, and get the water warm again.
Call 631-591-2289Why Heat a Pool on Long Island?
Long Island pool water follows the ocean's schedule, not the calendar. Even in a hot June, an unheated pool often sits in the low 70s, and by mid-September it's dropping fast. That leaves most families with a pool they paid a lot for and can comfortably use for about two months.
A properly sized heater flips that. You open warm for Memorial Day weekend, swim through every cool snap in June, and keep going through Labor Day into late September or October. On the South Shore and North Shore alike, where evening breezes off the water pull heat out of a pool overnight, a heater paired with a cover is the difference between a two-month pool and a five-month pool. If you've ever stood at the edge on a beautiful 80-degree day and decided the water was too cold to bother, you already know why this page exists.
Gas Pool Heaters: Fast Heat in Any Weather
A natural gas pool heater is the fastest way to warm a pool, period. It can raise water temperature by 1 to 2°F per hour on many pools, works exactly the same on a 45-degree April morning as it does in July, and doesn't care about air temperature at all. That makes gas the right call for:
- Weekend Warm-Ups (Heat Only When You Swim)
- Spas & Hot Tubs That Need Fast, High Heat
- Early Openings & Late-Season Swimming
- Pools Without Room for Steady All-Season Heating
The catch is that a gas heater is only as good as the gas line feeding it. A 400,000 BTU pool heater is often the biggest gas appliance on the property, bigger than the furnace and water heater combined, and an undersized line starves it: weak flame, ignition failures, error codes, and a heater that never hits its rating. This is where we're different. Gas piping is our trade. We calculate the load, size the line correctly from the meter, run it to the pool pad, and install the heater, all as one gas line and heater job with the permits handled. No coordinating between a pool company and a plumber who've never met.
No Natural Gas on Your Street? Propane Works
Plenty of Long Island pools sit east of the gas mains, and that doesn't rule out fast gas heat. Raypak, Hayward, Pentair, and Jandy all make propane-fired models, and we install those too: the heater, the propane piping from your tank to the pool pad, and the permits, as one job. If you'd rather skip fuel deliveries entirely, a heat pump heater is the other path.
Heat Pump Pool Heaters: Cheap to Run, All Season Long
A heat pump pool heater works like an air conditioner in reverse: it pulls heat out of the outdoor air and moves it into your pool water. Because it moves heat instead of burning fuel to make it, a heat pump typically costs four to six times less to run than a gas heater for the same amount of heat. Over a full Long Island season, that's a serious difference in operating cost.
The trade-off is speed. A heat pump raises water temperature slowly, often a few degrees per day rather than per hour, and it works best when the air is above roughly 50°F. That makes it the right call for homeowners who want to set the pool at 82°F in May and hold it there all season, rather than heating from cold for a single weekend. Heat pump models also need a dedicated electrical circuit, usually 240V, which we coordinate as part of the installation.
If you're already looking at heat pumps for your house, the technology is the same one we install for home heating and cooling. See our Long Island heat pumps page for the whole-home side.
Gas vs Heat Pump: The Honest Comparison
Neither one is "better." They're built for different swimmers:
- Speed: Gas Heats in Hours, Heat Pump in Days
- Operating Cost: Heat Pump Is 4-6x Cheaper to Run
- Cold Weather: Gas Works in Any Air Temp, Heat Pump Slows Below ~50°F
- Best Use: Gas for On-Demand, Heat Pump for Set-and-Hold
- Spas: Gas Wins for Fast, High-Temperature Heat
- Utility Needs: Gas Needs a Sized Gas Line, Heat Pump Needs a Dedicated Circuit
The short version: if you swim on weekends and want the pool hot on demand, or you have a spa, go gas. If you want the pool warm every single day from May to October at the lowest running cost, go heat pump. Some homeowners do both, using a heat pump to hold temperature and gas for quick boosts. Solar heating exists too, and we're happy to tell you when it's worth considering, but for dependable Long Island swim-season heat, gas and heat pump units do the real work. We'll size out both options in your written estimate so you can compare real numbers, not guesses.
Sizing a Pool Heater Correctly
Pool heaters are sized in BTU based on your pool's surface area, not gallons, because the surface is where heat escapes. The other inputs are the temperature rise you want (how far above the unheated water temperature) and exposure: a windswept South Shore backyard loses heat far faster than a fenced, sheltered yard.
Why it matters: an undersized heater runs forever, burns fuel around the clock, never quite catches up on cool days, and dies young from the constant runtime. A correctly sized heater reaches temperature quickly, cycles normally, and lasts. We measure the pool and do the sizing math before we quote, so the number in your estimate is for a heater that will actually keep up in May and late September, the months you bought it for.
What's Included in a Pool Heater Installation
A pool heater install done right involves more than setting a box next to the filter. Here's the full scope we handle:
- Equipment Pad Placement & Clearances
- Plumbing Into the Filtration Loop with Bypass Valves
- Gas Line Sizing & Run from the Meter (Gas Models)
- Dedicated Electrical Circuit (Heat Pump Models)
- Venting & Clearance Requirements
- Permits & Required Inspections
- First Startup, Pressure & Leak Testing
- Controls Setup & Homeowner Walkthrough
The bypass plumbing matters more than most people realize: it lets you isolate the heater for service and winterization without shutting down the whole filtration system. And because our own licensed techs do the gas or plumbing work, nothing on this list gets handed to a subcontractor. If your pool pad plumbing needs work beyond the heater, our Long Island plumbing team handles that too.
Pool Heater Repair: Symptoms We Fix
Pool heaters live outdoors in Long Island salt air, running wet all season. Things fail. Whether it's a Raypak, Hayward, Pentair, or Jandy, gas or heat pump, these are the calls we handle:
- Heater Won't Ignite / No Flame
- Heater Won't Turn On at All
- Heater Cycling Off Before Temperature
- Low Water Flow Error / Pressure Switch Trips
- Tripping Breaker (Heat Pump Models)
- Pilot & Ignition Failures
- Error Codes on the Display
- Low Heat Output / Pool Takes Forever to Warm
- Corrosion on the Heat Exchanger
- Rust-Colored Water Returning to the Pool
- Leaking From the Heater Cabinet
- Noisy Fan or Compressor (Heat Pump Models)
- Salt-Air Corrosion on Shorefront Units
- Failed Thermostat or Temperature Sensor
- Bypass or Check Valve Problems
- Soot or Scorching at the Burner Tray
Rust-colored water and exchanger corrosion usually trace back to water chemistry, and we'll tell you so, because replacing an exchanger without fixing the cause just buys the same failure twice. Repair pricing is quoted in person, in writing, before any work starts. Call 631-591-2289 to get on the schedule.
Maintenance, Winterization & Spring Startup
Most pool heater deaths on Long Island aren't old age. They're freeze damage and bad water chemistry. Three habits protect your investment:
Fall Winterization
Before the first hard freeze, usually by late October here, the heat exchanger and heater plumbing must be fully blown out. Water trapped in an exchanger over a Long Island winter freezes, expands, and cracks it, and a cracked exchanger often costs enough to total the heater. We close heaters properly: isolate, drain, blow out, and cap.
Spring Startup
When we open the heater in spring, we check the burner or refrigerant circuit, verify gas pressure or amp draw, test the safeties, confirm water flow, and fire it under supervision. Ten minutes of checks in April prevents the classic "heater won't light on Memorial Day weekend" phone call.
Water Chemistry
Unbalanced water quietly eats heat exchangers. Low pH dissolves copper, which is where rust-colored return water usually comes from, and high calcium scales the exchanger and chokes heat transfer. Keep chemistry balanced and the heater's most expensive part lasts years longer. Salt pools and shorefront homes should consider cupro-nickel exchangers from the start.
Pool Heater Brands We Install & Service
We install and service the major pool heater brands, in both gas and heat pump models:
- Raypak
- Hayward
- Pentair
- Jandy
Not sure what you have? Send a photo of the heater's data plate and we'll tell you what it is and whether parts are still available. Call 631-591-2289.
What Affects Pool Heater Cost on Long Island
Every pool and pad is different, so we price in writing after seeing yours. These are the factors that move the number:
- Heater Type (Gas vs Heat Pump)
- Size in BTU (Pool Surface Area & Temperature Rise)
- Brand & Model
- Standard Copper vs Cupro-Nickel Heat Exchanger
- Gas Line Length, Sizing & Routing
- Electrical Circuit Work (Heat Pump Models)
- Pad Work & Plumbing Modifications
- Permits & Inspections
- Removal of the Old Heater
You get one written estimate covering the whole job (heater, gas line or electrical, permits, and startup) with no hidden line items appearing later. Request your estimate here or call 631-591-2289.
Why Long Island Pool Owners Call Us
Pool companies sell heaters but typically aren't licensed to run gas lines. Plumbers run gas lines but usually don't touch pool equipment. We do both, and that's the whole point:
- Gas Line + Heater Installed as One Job
- Family-Owned in Wading River Since 2004
- Licensed & Insured
- Our Own Techs, Never Subcontracted
- Up-Front Written Pricing
- Permits & Inspections Handled for You
- Gas Lines Sized Right, Not Guessed
- Serving All of Suffolk & Nassau Counties
How It Works: Three Easy Steps
- 1Call or Send Photos
Tell us what you're after: new heater, repair, or gas-vs-heat-pump advice. Photos of your pool pad and gas meter speed things up.
- 2Get a Written Estimate
We measure the pool, size the heater and the gas line or electrical, and put the whole job in writing. No surprises later.
- 3Swim Warmer
Most installations are done in one to two days, including the gas line run. We fire it up, test everything, and show you the controls.
Related Long Island Services
Pool heater projects often pair with other work on the property. Here's what customers commonly book together: