Many states require gas appliances to be installed by a licensed contractor; but buying it, placing it and plumbing it — you can do yourself. Once you have purchased the correct size and type of pool heater propane or natural , the first step in replacing your gas pool heater is to remove your current heater and clear the location where the new pool heater will be installed. Be sure your pool pump is turned off at the circuit breaker, and that you shut off the gas supply to the heater, at the tank propane or at the gas meter natural gas.

For electronic gas pool heaters , those with a digital display, make sure that your heater is truly powered down by removing the power source. If your replacement gas heater is the same as your old one, take note of how your old one is wired as you are disconnecting the wires. Your new pool heater may be wired differently however. Disconnect the gas plumbing from inside of the heater, with the use of two large channel locks or two pipe wrenches.

Be certain that the gas supply is turned off before this is done. On Natural Gas heaters , look for a union connection inside the heater to disconnect. Propane lines are typically a flexible copper tubing. Be careful not to crimp or bend the tubing during removal. Of course, no smoking or any open flames near the heater at this point. Disconnect the water plumbing, where the pipes come in and out of the heater.

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If your heater has union connections, use large channel locks or strong hands to loosen the unions. Older heaters without union connections may be plumbed with threaded CPVC fitting, or may utilize heat sinks — metal tubes with unions on the bottom. Leave room to reconnect with a coupling or union, if you plan to re-use the pipes on the new heater. For steel or copper heat sinks, remove the bolts on the header flanges, to disconnect the water plumbing from the heater.

Look for a small, bare copper bonding wire attached to the base of the pool heater; also connected to the pump motor.

Disconnect the bonding lug completely from the heater using a nut driver do not cut the wire , and bend the wire and bonding lug out of the way. If your heater has a vent stack on top and any heater installed indoors or inside of a shed should have proper venting , carefully remove the sheet metal pieces from the top, and inspect the pieces to be sure that there are no cracks or corrosion.

Also check the vent and vent cap for bird nests and thick spider webs or any blockage to air flow. Now that you have disconnected the Power, the Plumbing, the Gas and the bonding wire, your heater should now be free to be removed from the pad. Two people should be able to remove the heater fairly easily. If you are working alone, you can remove the heat exchanger separately, which lightens the load considerably.

The propane pool heater should be placed on a level concrete slab so that the heater is stable.

Installing an LPG Pool Heater

If you have gas available then you might consider using a gas heating system rather than propane as it will be cheaper. The heater will normally need to be located close to the propane tank. Take the heater out of the box and position it on the cement slab. Few heaters will be bolted to the ground and will simply connect to your pools plumbing lines and propane tank.

The heaters are quite heavy and this is what will keep the heater in the right position. Check that the position of the heater is correct so that you will be able to connect the plumbing and gas lines correctly.

Propane Pool Heater Installation

The heater will need to be connected to the water line according to the manufacturer's instructions. Hi — We are renovating our pool. I suspect it is too small for our needs anyway, but my question is.. It has printed on the tank.

Wondering if it is still safe, should we should get a new one? Hi Kelly, the life expectancy of a Propane tank could be 30 years, or longer if the valve is replaced, or if it is sheltered. Your propane supplier could advise you on the safety of the tank I suppose, or advise on any maintenance that can be done.

What size propane tank do you recommend I purchase to heat this size pool? Hi Rene, a gallon tank should be good — the heater will consume about 3 gals of LPG for every hour of run time. Such a small pool may only need to run for 2 hours per day to keep a the pool warm depending on how warm you want it , and if you use a solar cover or not , to keep the heat trapped.

So, if you use gallons per day, a gal tank should last about 30 days.

Installing a Propane Swimming Pool Heater | InTheSwim Pool Blog

Your propane supplier can also provide advice on tank size, in relation to your heater size. Hi, a heater could be in the shed, but only with extra expense to install proper venting, thru the roof, and enough air inflow with vents or screens. Heaters produce carbon monoxide, so it can be dangerous to install them inside, even in a shed. Usually the heater is installed right next to the filter, to make plumbing and wiring easier.

The gas tank can be buried, or installed in a shed. You can also erect small fences, lattice or plantings to hide the equipment. Having a k BTU pool heater installed. Pool guy telling me one thing, propane company telling me another….. What size tank will I need. Pool is in Northern part of New Jersey. Hi Lori, it partly depends on what you anticipate your usage to be — pool heaters consume about a gallon of propane per hour, for every K btu, so you would use 3 gallons per hour of operation.

Depending on the outside temperature, and if you use a cover or not, and what temp you set it at, or the delta difference between outside air temp and water temps… your heater may run from hours per day.


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I would tend to side with the propane supplier, they know their business better than the pool guy, I would think. You will also pay more, I think may be a trip charge for each gas refill. We are having trouble getting the heater to stay lit. The regulator on the tank sounds like it is whining. Hi Jason, tank size of 25 gallon? Is that a typo? That will only operate a , BTU heater for about 6 hours, before the tank is empty. Might add degrees to the pool before that happens, depending on your pool size, but may quickly lose the heat again, unless you cover the pool.


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  4. I am looking to get a propane pool heater for my in ground 28, gal pool. What size heater should I get and do I call the propane company first or the pool company to come out and get things started? Hi Rachel, I would call the pool company first, and if you plan to buy the heater from us and have them install it, be sure to let them know that. They just need to know your heater size to quote you a price….

    Now for the heater size, I would look at , — , BTU size. Also consider wind — very windy pools lose heat faster, and if you plan to use a solar cover on the pool.