Do I need a separate propane tank for a whole-house generator?

It depends on total household demand. Some suppliers add a larger shared tank, others recommend a dedicated tank so a long generator run doesn't drain propane needed for cooking or hot water.

How big of a propane tank do I need for a home generator?

Sizing is based on the generator's gallons-per-hour rating and how many hours of runtime you want in reserve, which a supplier can calculate from your generator's spec sheet.

When should I set up propane generator service in Florida?

Before hurricane season starts is best, since installation appointments and tank availability tend to book up as storms approach.

Propane whole-house generator hookup and fuel supply

Hooking up a whole-house standby generator involves more than a standard residential tank setup. It combines tank sizing for a much higher, intermittent gas draw, sometimes a dedicated line separate from your home's regular propane use, and coordination with your generator installer or electrician on timing. This crosses into both installation and ongoing supply planning, which is why it's handled as its own job rather than a routine tank install or a routine delivery.

Given Florida's hurricane season, this is a common request ahead of storm season rather than a one-off. Suppliers familiar with generator hookups will calculate expected run hours during an extended outage, size the tank (or recommend a second tank) accordingly, and make sure your regular household propane use for cooking or water heating isn't shorted if the generator runs for days.

Tell the supplier your generator's fuel consumption rate (gallons per hour) from the manufacturer spec sheet
Ask whether you need a separate tank or line for the generator versus household appliances
Plan ahead of storm season since demand for this work spikes before hurricanes

What it costs

Cost depends on tank size needed for generator load, whether a new dedicated line is run, and if it's a standalone tank or shared with existing household propane service. Sizing correctly for total hours of expected run time during an outage is the main cost driver, not just the tank itself.

Top 3 by our score

Ranked from our published scoring of public Google reviews for propane tank installation & leasing.

1. Propane Ninja
4.9★ · 244 reviews

87
2. KAIROS KARAT LLC
5.0★ · 104 reviews

85
3. Tractor Supply Co.
4.5★ · 890 reviews

85

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FAQ

Do I need a separate propane tank for a whole-house generator?: It depends on total household demand. Some suppliers add a larger shared tank, others recommend a dedicated tank so a long generator run doesn't drain propane needed for cooking or hot water.
How big of a propane tank do I need for a home generator?: Sizing is based on the generator's gallons-per-hour rating and how many hours of runtime you want in reserve, which a supplier can calculate from your generator's spec sheet.
When should I set up propane generator service in Florida?: Before hurricane season starts is best, since installation appointments and tank availability tend to book up as storms approach.

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