Installation can also be handled by general contractors. Generator installers and most electricians install whole house generators. Reputable brands offer 5- to 10-year limited warranties on whole house generators. How long does a whole house generator last?Ī whole house generator lasts 15 to 30 years and provides 10,000 to 30,000 hours of use with proper maintenance. Manufacturers recommend running a whole house generator for up to 500 hours continuously, or about three weeks. How long can a whole house generator run continuously? *Costs depend on current and local fuel prices. Whole-house 15 to 20 kW standby generators consume 133 to 330 cubic feet of natural gas or 3.16 to 3.45 gallons of liquid propane per hour.Ĭost to run a generator per day Fuel source How much does a whole house generator cost to run?Ī whole-home generator costs $30 to $170 per day to run all day depending on the size and fuel source. Some appliances startup wattage can be double the running wattage. Generator size calculator for house Type of Load Use the watt usage chart for generators below to calculate the size required for a house. Powering a whole house up to 3,000 SF typically requires a 13 to 20 kW generator. Home backup generator FAQs Does a whole house generator add value to your home?Ī whole house generator provides up to a 150% return on investment and can increase the overall value of your home by 5% according to Consumer Reports and Remodeling magazine. Cummins generators feature sound-insulated enclosures, remote diagnostics, and intelligent load management to balance power use across multiple appliances so a smaller generator can power an entire home. Cummins Generator CostĬummins standby generators cost $3,100 to $13,900 for models ranging from 13 to 40 kW. Briggs & Stratton generators feature wireless monitoring, automatic low oil shutdown, and power management to control power distribution to select appliances and prevent overloads. Briggs & Stratton Generator Costīriggs & Stratton home generators cost $2,400 to $15,300 depending on size, with models ranging from 10 to 48 kW. Kohler generators run on natural gas or liquid propane, feature remote smartphone monitoring, and include an automatic transfer switch to turn on automatically during power outages. Kohler Generator CostĪ Kohler home generator costs $2,700 to $16,000 depending on size, ranging from 6 to 48 kW. Other standby generator brands to compare are Kohler, Briggs & Stratton, Honda, and Cummins. Whole house generators may need additional accessories depending on the location and system type: The average cost to install a generator transfer switch is $400 to $2,500 total.Ī generator interlock costs $400 to $850 installed and allows a portable generator to connect to the electrical panel without a transfer switch. Standby generator installed in home backyard Generator transfer switch or interlock installationĪ transfer switch or interlock connects a generator to a home's electrical panel. Annual generator maintenance contracts cost $200 to $650 per year and include a full inspection and oil and filter changes. Permits cost $80 to $450 total on average.Ī 3" to 4" thick pre-cast concrete pad costs $150 to $400 for a generator.ĭIY generator maintenance kits cost $20 to $110. Separate electrical, plumbing, and mechanical permits may be required. Propane tanks cost $400 to $1,800 on average. Gas line installation costs $12 to $25 per linear foot.Ī liquid propane generator requires a fuel tank. Natural gas and liquid propane generators require gas plumbing. Standby generator installation cost factors FactorĮlectricians charge $50 to $130 per hour to install wiring and hook up a backup generator to the electrical panel.
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