Question 1

How is this different from a whole-house generator?

Accepted Answer

In practice the terms overlap heavily. "Standby" describes how the unit operates (automatically, always connected); "whole-house" usually describes sizing (enough capacity to run the entire home rather than just a few circuits).

Question 2

Can I install a standby generator myself?

Accepted Answer

The gas/propane connection and electrical tie-in to your panel almost always require a licensed professional and local permits — this isn't a typical weekend DIY project.

Question 3

Is a transfer switch legally required?

Accepted Answer

Connecting a generator to your home's wiring without one is both unsafe and, in essentially every jurisdiction, against electrical code — it's the mechanism that prevents backfeeding.

Question 4

Can one switch cover only part of my house?

Accepted Answer

Yes — a smaller-amperage switch can be wired to cover just essential circuits (like a sump pump and refrigerator) if a whole-house switch isn't in the budget.

Question 5

Can I keep my old transfer switch with a new generator?

Accepted Answer

Only if it's rated for the new unit's output and still in good working condition — this gets verified during the site assessment, not assumed.

Question 6

Is replacement cheaper than a first-time installation?

Accepted Answer

Often somewhat, if the pad, fuel line, and switch are reusable, since that removes several line items from the labor estimate.

Question 7

Why does my generator show a fault code but still run?

Accepted Answer

Many faults (like a low battery or a maintenance reminder) don't stop the unit from running but do need attention before they cause a failure during an actual outage.

Question 8

How fast can repairs typically happen?

Accepted Answer

It depends heavily on parts availability and the technician's schedule — simple fixes can sometimes happen same-day, while parts on order can take longer.

Question 9

What happens if I skip maintenance?

Accepted Answer

Risk of failure during an actual outage goes up, and skipping scheduled maintenance can also affect manufacturer warranty coverage on some models.

Question 10

Is an annual plan worth it over one-off visits?

Accepted Answer

It depends on your unit's age and how you value predictable scheduling — plans typically include reminders so service doesn't get missed, which one-off visits don't.

Question 11

Do I need an inspection if I'm just buying a house with a generator already installed?

Accepted Answer

It's a reasonable precaution, especially if you can't confirm the original installation was permitted and inspected at the time.

Question 12

Who schedules the code inspection — me or the installer?

Accepted Answer

Typically the licensed contractor handles permit and inspection scheduling as part of the installation, but it's worth confirming this is included before work starts.

Question 13

Do I need concrete, or is composite enough?

Accepted Answer

For most single-family residential units, a rated composite pad is sufficient and is what many installers use by default; concrete tends to come up more for larger or commercial units, or when local code requires it.

Question 14

How far does the generator need to be from the house?

Accepted Answer

This is set by the manufacturer's installation manual and local code, and it varies by model — it's confirmed during the site assessment, not assumed.

Question 15

Will my gas meter need to be upgraded?

Accepted Answer

It depends on the generator's BTU draw relative to what your existing meter and service line are rated for — this gets checked with the gas utility during planning.

Question 16

Is natural gas cheaper to run than propane long-term?

Accepted Answer

Natural gas is generally less expensive per equivalent unit of energy than propane in most U.S. markets, though local utility rates vary.

Question 17

What size propane tank do I need?

Accepted Answer

Tank sizing depends on your generator's fuel consumption rate and how long you want to be able to run without a refill — an installer calculates this based on the specific unit chosen.

Question 18

Can I lease a propane tank instead of buying one?

Accepted Answer

Many propane suppliers offer tank leases tied to a fuel-delivery contract, which can lower upfront cost in exchange for an ongoing supplier relationship.

Question 19

Do commercial installations need an engineer?

Accepted Answer

Many jurisdictions require a stamped engineering drawing for larger commercial installations — this is confirmed with the local permitting authority early in planning.

Question 20

How much bigger are commercial units than residential ones?

Accepted Answer

It varies widely by facility, but commercial systems commonly start well above typical residential kW ratings and scale up based on the building's full critical load.

Question 21

Does a bigger generator always cost proportionally more?

Accepted Answer

Roughly, yes — cost tends to scale with kW capacity, though pricing isn't perfectly linear across every model and brand.

Question 22

Why do quotes for the same generator vary so much between contractors?

Accepted Answer

Labor estimates reflect site-specific factors (distance to panel, access, local labor rates) as much as the contractor's own pricing — this is exactly why getting a few local quotes is worth doing.

Question 23

Is this an authorized Generac dealer?

Accepted Answer

No — this site is an independent information and quote-request platform, not an authorized dealer or installer for any generator manufacturer.

Question 24

Is this an authorized Kohler dealer?

Accepted Answer

No — this site is an independent information and quote-request platform, not an authorized dealer or installer for any generator manufacturer.

Question 25

Is the transfer switch included in a generator's listed price?

Accepted Answer

Not always — some quotes bundle it in, others list it separately, so it's worth confirming explicitly when comparing quotes.

Question 26

Which fuel type is cheaper overall?

Accepted Answer

Natural gas is often cheaper to run long-term where utility service is available, while propane has a higher upfront/ongoing fuel cost but works anywhere, including off the gas utility grid.

Question 27

Is an annual maintenance plan worth the cost?

Accepted Answer

For most owners, yes — it spreads cost predictably and helps ensure service doesn't get missed, which matters more for a system you rarely use but need to work when you do.

Question 28

When does it make more sense to replace than repair?

Accepted Answer

If repairs are becoming frequent, or a major component failure approaches a meaningful fraction of a new unit's cost, replacement is often worth comparing against continued repair.

Question 29

Is this an authorized Cummins dealer?

Accepted Answer

No — this site is an independent information and quote-request platform, not an authorized dealer or installer for any generator manufacturer.

Question 30

How does Cummins compare to Generac and Kohler on installed cost?

Accepted Answer

Cummins tends to run at the higher end of the residential standby range — roughly comparable to Kohler and modestly above Generac — though specific model pricing and local installer rates affect actual quotes more than brand alone.

Question 31

Is a permit required for every standby generator installation?

Accepted Answer

In virtually all jurisdictions, yes — a generator installation involves both electrical and building work, each of which typically requires a permit and a final inspection before the system can be legally operated.

Question 32

Who pulls the permit — me or the installer?

Accepted Answer

In most cases, the licensed contractor handles permit applications as part of the installation. Confirm this during the quoting process so there's no confusion about who is responsible.

Question 33

What happens if I skip the permit?

Accepted Answer

An unpermitted installation creates liability exposure — it may not be covered by homeowners insurance, can complicate a home sale, and may need to be brought up to code (or removed) at the homeowner's expense if discovered later.

Question 34

Is a composite pad acceptable instead of concrete?

Accepted Answer

Many manufacturers list composite equipment pads as acceptable, and many local codes accept them. Confirm with your installer and local permitting office before assuming a composite pad will be approved for your specific jurisdiction.

Question 35

Is the pad included in the installation quote?

Accepted Answer

Usually yes, but it's worth confirming explicitly — some quotes list the pad as a separate line item, and some contractors coordinate concrete work through a separate subcontractor that may not be included in the base price.

Question 36

Is the transfer switch included in the equipment price?

Accepted Answer

Not always. Some contractors include the automatic transfer switch as part of the full installation scope; others list it as a separate line item. A whole-house ATS typically adds $900–$1,800 to the project depending on amperage rating. When comparing quotes, ask explicitly whether the switch is included, what amperage it carries, and whether it covers all circuits or essential circuits only.

Question 37

Does a bigger house always mean a bigger bill?

Accepted Answer

Generally yes — larger homes typically need higher-kW equipment and longer wire runs. But site-specific factors like the distance from your panel to the generator's pad, whether a panel upgrade is required, and fuel connection complexity can affect total cost as much as home size does. Two homes of identical square footage can generate meaningfully different quotes based on these factors.

Question 38

Are financing or payment plans common for this kind of project?

Accepted Answer

Yes. Given that installed projects often run $9,000–$16,000, several financing options are commonly used: installer-arranged financing through a third-party lender, home equity loans or HELOCs, personal loans, and PACE programs in states like Florida and California. Specific terms vary widely — comparing actual offers directly rather than assuming one product is always cheaper is the reliable approach.

Question 39

Can I just use a rule of thumb based on square footage?

Accepted Answer

Square footage is a rough starting point for baseline lighting and plug load, but it doesn't account for high-draw appliances like central air conditioning, electric ranges, or well pumps — which are often the deciding factors in a load calculation. Two homes of identical square footage can land on very different generator sizes based on their appliances alone.

Question 40

What if I get it wrong?

Accepted Answer

Undersizing means the generator can't support everything wired to it simultaneously — circuits may trip offline during heavy combined loads like AC startup. Oversizing mostly costs more upfront without providing functional benefit for your actual load. A professional load calculation before purchase is the standard way to avoid either outcome; our size calculator helps you frame that conversation with real numbers.

Question 41

Should I size for my current home or plan ahead?

Accepted Answer

It's reasonable to build in some headroom for planned additions — a pool pump, an EV charger, a hot tub — rather than sizing exactly to today's appliances, since upsizing a generator later usually costs more than sizing correctly up front. For significant future loads, discuss them specifically with your installer during the load calculation rather than adding a generic buffer.

Question 42

How fast does the power come back on?

Accepted Answer

Typically within about 10–30 seconds of the outage starting — long enough that you'll notice a brief interruption, but short enough that most electronics and appliances recover without issue. The delay occurs because the generator needs to start, reach stable voltage and frequency, and then the transfer switch confirms utility power is truly gone before completing the switch.

Question 43

Does the whole house restart at once?

Accepted Answer

Whichever circuits are wired to the automatic transfer switch restart together when it switches over. With a whole-house transfer switch, that means every circuit on the panel; with an essential-circuits setup, only the wired subset restarts. This is exactly why the scope of what's connected to the switch matters during installation planning.

Question 44

Can I monitor the generator remotely?

Accepted Answer

Yes — most current standby models include Wi-Fi monitoring capability that lets you check status, run history, and maintenance alerts from a smartphone app. Generac calls theirs Mobile Link, Kohler uses OnCue, and Cummins offers Connect. A cellular communication card (sold separately for most brands) lets you receive alerts even when your home internet is offline during an outage.

Question 45

Can I speed up the permit step?

Accepted Answer

Not usually on your own — permit review timelines are set by the local authority, not the installer. That said, an installer who regularly works in your specific jurisdiction knows exactly what documentation that office expects, which avoids the back-and-forth of rejected or incomplete applications. Submitting a complete, correct application the first time is the most realistic way to shorten this step.

Question 46

What slows a project down the most?

Accepted Answer

Permit backlogs and inspection scheduling tend to be the biggest variables, followed by equipment lead times on less-common sizes and any unexpected work discovered during the site assessment — a required panel upgrade is the most common example. The actual hands-on installation is usually the most predictable part of the timeline.

Question 47

Is there a best time of year to start the process?

Accepted Answer

Starting outside of peak storm season often means shorter equipment lead times and more installer availability, even though the underlying permitting timeline stays roughly the same. In hurricane-prone regions, that means starting well before June; in cold-climate areas, before winter storm season. A generator ordered during a calm stretch is far more likely to be running before the next event than one ordered as a storm approaches.

Question 48

Do I need a permit even for a small unit?

Accepted Answer

Generally yes. Permit requirements are triggered by the fact that you're connecting fuel and electrical systems to your home — not by the generator's kW size specifically. A 7 kW essentials unit and a 26 kW whole-home unit both involve a fuel connection and a tie-in to your electrical panel, which is what the permit process exists to verify. Requirements vary by jurisdiction, but a size-based exemption is uncommon.

Question 49

What happens at the inspection?

Accepted Answer

An inspector from your local permitting authority reviews the completed installation against code: electrical wiring and the transfer switch connection, fuel line integrity and pressure testing, and clearance distances from windows, doors, and property lines. Only after the inspector signs off is the system considered legally complete. Some jurisdictions require separate electrical and mechanical/gas inspections.

Question 50

Does my HOA need to approve the installation too?

Accepted Answer

Possibly. HOA rules are separate from municipal permitting and can add their own requirements around placement, screening, and permissible operating hours. In most jurisdictions an HOA cannot flatly prohibit a backup generator — and some states, notably Florida, have laws limiting that authority — but they often can regulate how and where it's installed. Get HOA approval in writing before ordering equipment.

Question 51

How far should a generator be from the house?

Accepted Answer

A commonly cited baseline is 18 inches minimum from the home's exterior wall and 60 inches from any door, window, or fresh-air intake — but the exact required distance is set by your generator's installation manual and your local building or fire code. The installer confirms both during the site assessment, since local code can be stricter than the manufacturer's baseline.

Question 52

How far from the house should a Generac generator be?

Accepted Answer

Generac's required clearance distances vary by model — there is no single universal Generac distance. The model-specific installation manual is the authoritative source, and local code may require more than what Generac's manual specifies. An installer working with a specific Generac model will use that model's documentation, not a generic figure.

Question 53

Can a generator be placed against the house?

Accepted Answer

No — manufacturer installation manuals and local code both require minimum clearances from the home's exterior, from building openings, and from service access areas. Placing the unit flush against a wall typically violates both manufacturer requirements and fire/building code, and will fail inspection.

Question 54

Does generator size affect how far it needs to be from the house?

Accepted Answer

Yes. Larger units generally require larger clearances for service access and exhaust volume, and their physical footprint is larger. This is one reason generator size is finalized before placement is confirmed — a larger unit may not fit in a preferred spot without violating clearance requirements.

Question 55

Do HOA rules affect generator placement?

Accepted Answer

Often yes. Many HOAs impose their own restrictions on placement, screening, and visual concealment that are separate from — and sometimes stricter than — code minimums. If your property is governed by an HOA, getting those requirements in writing before ordering equipment avoids costly conflicts after installation.

Question 56

How far from a propane tank should a generator be?

Accepted Answer

Propane tank setbacks from the generator and from structures are governed by NFPA 58 (Liquefied Petroleum Gas Code) and your local fire code — not by the generator manufacturer. The installer and propane supplier coordinate tank placement to satisfy both the fuel line requirements and the applicable fire code for your jurisdiction.

Question 57

Will my gas meter need to be upgraded?

Accepted Answer

It depends on the generator's BTU draw relative to your existing meter and service line rating. A whole-house generator can add substantial demand on top of your existing furnace, water heater, and range — if the combined load exceeds what your current meter is rated for, the utility may need to upsize it. This gets checked with your gas utility during planning, not assumed, and any meter upgrade is typically handled by the utility rather than your installer.

Question 58

Is natural gas cheaper than propane?

Accepted Answer

Generally, natural gas costs less per equivalent unit of energy than propane in most U.S. markets, and there's no tank to buy or lease. See our natural gas vs. propane comparison for the full cost and availability tradeoff. Local utility rates vary, so the gap isn't fixed — but where natural gas service is available, it's usually the lower long-term operating cost.

Question 59

Does a natural gas generator ever run out of fuel?

Accepted Answer

Not under normal circumstances, since it draws from the continuous utility supply rather than a stored tank. The main exceptions are a disruption to the utility's own gas service — rare, but possible after a major earthquake or infrastructure failure — or a utility deliberately curtailing supply during extreme demand. For the vast majority of weather-related outages, the gas supply continues uninterrupted while the electric grid is down.

Question 60

Can I switch a generator from one fuel type to another later?

Accepted Answer

Some generator models support dual-fuel configurations or conversion kits, but this isn't universal — it's worth confirming with the specific model before assuming it's an option.

Question 61

Do I need to buy a propane tank, or can I lease one?

Accepted Answer

Many propane suppliers offer tank leases tied to a fuel-delivery contract, which can lower upfront cost in exchange for an ongoing supplier relationship.

Question 62

Are there non-combustion backup power options?

Accepted Answer

Yes — battery storage systems, sometimes paired with solar, are a zero-emissions alternative worth researching if that's a priority, though they generally have a higher upfront cost and more limited run-time than a fuel-based generator.

Question 63

Is the transfer switch included when I buy a generator?

Accepted Answer

Not always. Some manufacturers bundle a compatible ATS with the generator; in other cases it's a separate purchase, and installation labor is separate again. A residential ATS typically adds $900–$1,800 installed. When comparing quotes, confirm whether the switch is included, its amperage rating, and whether it's whole-house or essential-circuits — otherwise you may be comparing quotes that cover different scope.

Question 64

Can one switch cover only part of my house?

Accepted Answer

Yes. A smaller-amperage switch wired to essential circuits only — refrigerator, sump pump, furnace blower, a few outlets — is a common approach when a whole-house switch isn't practical or affordable, and it pairs well with a smaller, less expensive generator. The tradeoff is that only those pre-selected circuits have power during an outage; everything else stays dark until utility power returns.

Frequently asked questions

Frequently asked questions

Installation & services

Cost

Guides & general questions

Locations

Frequently asked questions

Frequently asked questions

Installation & services

Cost

Guides & general questions

Locations

Frequently asked questions

Frequently asked questions

Installation & services

How is this different from a whole-house generator?−

Can I install a standby generator myself?+

Is a transfer switch legally required?+

Can one switch cover only part of my house?+

Can I keep my old transfer switch with a new generator?+

Is replacement cheaper than a first-time installation?+

Why does my generator show a fault code but still run?+

How fast can repairs typically happen?+

What happens if I skip maintenance?+

Is an annual plan worth it over one-off visits?+

Do I need an inspection if I'm just buying a house with a generator already installed?+

Who schedules the code inspection — me or the installer?+

Do I need concrete, or is composite enough?+

How far does the generator need to be from the house?+

Will my gas meter need to be upgraded?+

Is natural gas cheaper to run than propane long-term?+

What size propane tank do I need?+

Can I lease a propane tank instead of buying one?+

Do commercial installations need an engineer?+

How much bigger are commercial units than residential ones?+

Cost

Does a bigger generator always cost proportionally more?−

Why do quotes for the same generator vary so much between contractors?+

Is this an authorized Generac dealer?+

Is this an authorized Kohler dealer?+

Is the transfer switch included in a generator's listed price?+

Which fuel type is cheaper overall?+

Is an annual maintenance plan worth the cost?+

When does it make more sense to replace than repair?+

Is this an authorized Cummins dealer?+

How does Cummins compare to Generac and Kohler on installed cost?+

Is a permit required for every standby generator installation?+

Who pulls the permit — me or the installer?+

What happens if I skip the permit?+

Is a composite pad acceptable instead of concrete?+

Is the pad included in the installation quote?+

Guides & general questions

Is the transfer switch included in the equipment price?−

Does a bigger house always mean a bigger bill?+

Are financing or payment plans common for this kind of project?+

Can I just use a rule of thumb based on square footage?+

What if I get it wrong?+

Should I size for my current home or plan ahead?+

How fast does the power come back on?+

Does the whole house restart at once?+

Can I monitor the generator remotely?+

Can I speed up the permit step?+

What slows a project down the most?+

Is there a best time of year to start the process?+

Do I need a permit even for a small unit?+

What happens at the inspection?+

Does my HOA need to approve the installation too?+

How far should a generator be from the house?+

How far from the house should a Generac generator be?+

Can a generator be placed against the house?+

Does generator size affect how far it needs to be from the house?+

Do HOA rules affect generator placement?+

How far from a propane tank should a generator be?+

Will my gas meter need to be upgraded?+

Is natural gas cheaper than propane?+

Does a natural gas generator ever run out of fuel?+

Can I switch a generator from one fuel type to another later?+

Do I need to buy a propane tank, or can I lease one?+

Are there non-combustion backup power options?+

Is the transfer switch included when I buy a generator?+

Can one switch cover only part of my house?+

Can I upgrade from a manual switch to automatic later?+

Should I mention my generator when selling my house?+

Does an unpermitted generator hurt resale?+

Will a generator lower my homeowners insurance premium?+

What happens if I skip a scheduled service?+

Is an annual maintenance plan worth it?+

Should I service my generator right after a big storm?+

Does brand affect lifespan significantly?+

Should I replace or keep repairing an older unit?+

Does the warranty period tell me how long the generator will last?+

Will an essentials-only generator run my AC too?+