Gas Water Heater Installation & Replacement in St. Augustine, FL

Gas water heaters heat water quickly and recover fast after heavy use. Because they burn fuel, they also need correct venting, a safe gas connection, and careful installation.



Olympic Air is licensed for plumbing, HVAC, and building work, and we handle gas service every day. That means one team can replace your gas water heater, check the gas line, and make sure the venting is right. Every new installation includes the manufacturer’s warranty plus Olympic Air’s 1-year labor warranty.

What to Know Before Replacing a Gas Water Heater

A gas water heater replacement involves more than swapping the tank. These are the details we check.

Venting must match the heater


Gas water heaters send exhaust outside through a vent. Some models use a natural draft vent, and others use a fan (power vent). The vent type, size, and route must match the new heater and meet code. We inspect your existing venting before recommending a model.

The gas supply must be the right size


Every gas appliance in your home shares the same gas supply. A larger heater or a switch to tankless may need more gas than your current line can deliver. We check the line size and connections so every appliance gets what it needs.

Carbon monoxide safety comes first


A gas water heater that is not vented correctly can let carbon monoxide into your home. Any home with gas appliances should have working carbon monoxide alarms. We test the new heater’s venting and draft as part of every installation.

Olympic Air handles the full range of gas water heater work.

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Gas Tank Replacement: Like-for-like replacement with venting and connection checks.

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Gas Tankless Installation: Higher hot water output in a smaller space.

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Fuel Conversions: Switching between gas and electric where your home allows.

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Gas Line Work: Line repairs, modifications, and new connections.

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Gas Water Heater Repair: Pilot, burner, ignition, and gas valve problems.

Gas Water Heater Services

Yellow utility pipes and meters mounted on a dark wall

Serving St. Augustine and Nearby Areas

We install and replace gas water heaters in St. Augustine and across St. Johns County, including:

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Historic St. Augustine and downtown

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St. Augustine Beach and Vilano Beach

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World Golf Village and SilverLeaf

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St. Johns and Durbin

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Nocatee and Ponte Vedra

See Our Work

Browse Olympic Air’s project gallery for gas, plumbing, and HVAC work.

Frequently Asked Questions

  • Is a gas water heater cheaper to run than electric?


    It can be, depending on local gas and electric rates and how much hot water you use. Gas heaters also recover faster. We explain the trade-offs for your home.


  • What should I do if I smell gas near my water heater?


    Leave the home right away. Do not use light switches, appliances, or anything that could make a spark. Call the gas utility or 911 from a safe place, and do not go back inside until it is declared safe.


  • Why does the pilot light on my gas water heater keep going out?


    Common causes include a dirty or failing flame sensor or thermocouple, a venting or draft problem, or a gas supply issue. We find the cause and repair it safely.


  • Can I switch from an electric water heater to gas?


    It depends on whether gas service is available at your home. A switch needs a gas line to the heater, new venting, and a permit. We tell you what is involved before you decide.


  • How long does a gas water heater last?


    Many gas tank water heaters last about 8 to 12 years. Water quality, maintenance, and how the heater was installed all affect its life.


  • Do you install gas water heaters for businesses?


    Yes. Olympic Air works on residential and commercial properties. Commercial jobs are priced based on the equipment and the building.


Replace Your Gas Water Heater With Confidence

Call 904-788-9454 or request service online. Olympic Air is available 24/7 for homes and businesses in St. Augustine and St. Johns County.