Spa Heaters - Gas spa heaters

To heat the water in a spa or hot tub with a gas heater is becoming less and less popular. A gas heater is large and bulky, they are expensive to install. And with the moderns, super insulated spas, there is really no advantage to having a spa heated with gas.

To heat a swimming pool with a gas is the norm. A swimming pool has a body of water that far exceeds a spa. Therefore it becomes a necessity to have a large gas heater. However, there are large electrical heaters that can be used to heat pools as well.

How a gas heater works

1. The pump is pushing water through the heater

2. Inside the heater there is a pressure switch. The function of the pressure switch is to sense that water is flowing inside the heater. Once it is determined that a proper water flow is present, the pressure switch will allow..

3. The pilot gas valve to open and the electronic igniter to lite the pilot flame

4. Once the main gas valve sense that there is a lit pilot flame, it opens up. Gas will start to flow into the burners and when that gas get in contact with the pilot flame, the gas will ignite and the heater begin to heat the water.

There are many different sizes of heaters.

From 50,000 Btu and up. For spas, in most instances it is sufficient to use a 50,000-250,000 Btu heater.

Gas heat is almost never used for portable spas, hot tubs and Jacuzzis any more.

They all have electric heaters coupled with high quality spa covers. Therefore there is really no reason to use a large natural gas or propane heaters.

In-ground spas and hot tubs typically require gas heaters.

The reason being that they are considerable larger and that there is not much insulation in them

A 500 gallon spa heated by a 75,000 Btu natural gas or propane heater will take about 20 minutes to get warm. Of course depending on initial temperature of the water as well as outdoor temperature.

Advantages of natural gas or propane heaters

• Fast heating time

• Low heating cost over the life time of the heater

Disadvantages natural gas or propane heaters

• High initial cost

• Bulky, they need to be hidden

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Spa Heater Repair - How Do I Prevent Repairs to My Spa Heater
Spa Heater Repair - How Much Does It Cost To Heat A Spa?
Spa Heater Repair - Electric Spa Heaters - How Do They Work?
Spa Heater Repair - Replacement time?

Spa Heater Repair - Gas Spa Heaters

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