BEFORE YOU REQUEST A QUOTE
Should you shortlist Generac?
Consider it when: Keep an exact Generac model on your shortlist when its verified natural-gas or LP output covers your professionally reviewed loads and an authorized local provider can commission and service the exact system.
Hold off when: Pause if an installer quotes only “22 kW” or “26 kW” without the actual model number, selected-fuel rating, ATS package and local warranty-service arrangement.
Conditional editorial interpretation of the cited manufacturer sources. Not a tested reliability ranking, individual-home sizing approval or claim of local dealer availability.
Generac whole house generator models covered
Generac whole house generators are sold in multiple residential sizes, configurations and transfer-switch bundles. Generac sells multiple standby-generator families and bundles. This page does not treat a brand-wide “typical” rating, warranty, noise level, or price as if it applied to every unit. It compares two exact residential model numbers—the 22 kW G0072600 and 26 kW G0073270—using the manufacturer product pages and their linked specification sheets.
These are manufacturer-published facts, not independent test results. Model availability, controls, included accessories, and terms can change; confirm the model and warranty documents in the quote you receive.
Verified model data
The output figures below are separate LP and natural-gas ratings. Fuel-use values are the manufacturer’s stated consumption at the listed load—not a prediction for a specific home. Sound figures are from the model-family sheet and carry its distance and measurement-direction caveats.
Generac
Standby Generator, 22kW | Generac
Model G0072600
60 Hz, single-phase; 22 kW on LP and 21 kW on natural gas.
LP 22 kWNatural gas 21 kW
- Engine
- Generac G-Force 1000 Series · 997 cc
- Published dimensions (L × W × H)
- 46.4 × 26.3 × 30.7 in
- Published weight
- 451 lb
- Sound level stated by manufacturer
67 dB(A) at 23 ft — normal load; measured from the front; other sides may be higher.
55 dB(A) at 23 ft — Quiet-Test low-speed exercise; measured from the front; other sides may be higher.
- Fuel use at cited test loads
Natural gas, 50% load: 221 ft³/hr
Natural gas, 100% load: 311 ft³/hr
LP, 50% load: 2.45 gal/hr
LP, 100% load: 3.71 gal/hr
Manufacturer test values; actual consumption depends on load, fuel quality, site conditions, and the exact configuration.
- Starting MSRP shown on manufacturer page
- $6,309 USD
Published equipment/package starting MSRP; installation, taxes and local project scope are not included by this record.
- Transfer-switch scope
- Included transfer equipment is not established by the captured exact-model page. Require the complete generator and ATS package in writing.
- Warranty summary
- Product page states a 5-year limited warranty. Full contract, hour limits, labor, travel and exclusions require confirmation.
Generac
Standby Generator, 26kW | Generac
Model G0073270
60 Hz, single-phase; 26 kW on LP and 24 kW on natural gas.
LP 26 kWNatural gas 24 kW
- Engine
- Generac G-Force 1000 Series · 997 cc
- Published dimensions (L × W × H)
- 46.4 × 26.3 × 30.7 in
- Published weight
- 524 lb
- Sound level stated by manufacturer
67 dB(A) at 23 ft — normal load; measured from the front; other sides may be higher.
55 dB(A) at 23 ft — Quiet-Test low-speed exercise; measured from the front; other sides may be higher.
- Fuel use at cited test loads
Natural gas, 50% load: 182 ft³/hr
Natural gas, 100% load: 316 ft³/hr
LP, 50% load: 2.05 gal/hr
LP, 100% load: 3.95 gal/hr
Manufacturer test values; actual consumption depends on load, fuel quality, site conditions, and the exact configuration.
- Starting MSRP shown on manufacturer page
- $7,159 USD
Published equipment/package starting MSRP; installation, taxes and local project scope are not included by this record.
- Transfer-switch scope
- Included transfer equipment is not established by the captured exact-model page. Require the complete generator and ATS package in writing.
- Warranty summary
- Product page states a 5-year limited warranty. Full contract, hour limits, labor, travel and exclusions require confirmation.
Generac
Standby Generator, 10kW | Generac
Model G0072570
LP 10 kW
- Published dimensions (L × W × H)
- 46.4 × 26.3 × 30.7 in
- Sound level stated by manufacturer
61 dB(A) at 23 ft — normal load; measured from the front; other sides may be higher.
49 dB(A) at 23 ft — Quiet-Test low-speed exercise; measured from the front; other sides may be higher.
- Fuel use at cited test loads
LP, 50% load: 0.94 gal/hr
LP, 100% load: 1.6 gal/hr
Natural gas, 50% load: 98 ft³/hr
Natural gas, 100% load: 132 ft³/hr
Manufacturer test values; actual consumption depends on load, fuel quality, site conditions, and the exact configuration.
- Starting MSRP shown on manufacturer page
- $3,769 USD
Published equipment/package starting MSRP; installation, taxes and local project scope are not included by this record.
- Transfer-switch scope
- Included transfer equipment is not established by the captured exact-model page. Require the complete generator and ATS package in writing.
- Warranty summary
- Product page states a 5-year limited warranty. Full contract, hour limits, labor, travel and exclusions require confirmation.
Generac
Standby Generator, 10kW | Transfer Switch Bundle | Generac
Model G0073210
LP 10 kW
- Published dimensions (L × W × H)
- 46.4 × 26.3 × 30.7 in
- Sound level stated by manufacturer
61 dB(A) at 23 ft — normal load; measured from the front; other sides may be higher.
49 dB(A) at 23 ft — Quiet-Test low-speed exercise; measured from the front; other sides may be higher.
- Fuel use at cited test loads
LP, 50% load: 0.94 gal/hr
LP, 100% load: 1.6 gal/hr
Natural gas, 50% load: 98 ft³/hr
Natural gas, 100% load: 132 ft³/hr
Manufacturer test values; actual consumption depends on load, fuel quality, site conditions, and the exact configuration.
- Starting MSRP shown on manufacturer page
- $4,619 USD
Published equipment/package starting MSRP; installation, taxes and local project scope are not included by this record.
- Transfer-switch scope
- Manufacturer identifies an included transfer-switch bundle; exact switch details are listed below where verified.
- Warranty summary
- Product page states a 5-year limited warranty. Full contract, hour limits, labor, travel and exclusions require confirmation.
Generac
Standby Generator, 14kW | Generac
Model G0072580
LP 14 kWNatural gas 14 kW
- Engine
- Generac G-Force 800
- Published dimensions (L × W × H)
- 46.4 × 26.3 × 30.7 in
- Published weight
- 391 lb
- Sound level stated by manufacturer
65 dB(A) at 23 ft — normal load; measured from the front; other sides may be higher.
55 dB(A) at 23 ft — Quiet-Test low-speed exercise; measured from the front; other sides may be higher.
- Fuel use at cited test loads
LP, 50% load: 1.76 gal/hr
LP, 100% load: 2.92 gal/hr
Natural gas, 50% load: 189 ft³/hr
Natural gas, 100% load: 243 ft³/hr
Manufacturer test values; actual consumption depends on load, fuel quality, site conditions, and the exact configuration.
- Starting MSRP shown on manufacturer page
- $4,889 USD
Published equipment/package starting MSRP; installation, taxes and local project scope are not included by this record.
- Transfer-switch scope
- Included transfer equipment is not established by the captured exact-model page. Require the complete generator and ATS package in writing.
- Warranty summary
- Product page states a 5-year limited warranty. Full contract, hour limits, labor, travel and exclusions require confirmation.
Generac
Standby Generator, 14kW | Transfer Switch Bundle | Generac
Model G0073230
LP 14 kWNatural gas 14 kW
- Engine
- Generac G-Force 800
- Published dimensions (L × W × H)
- 46.4 × 26.3 × 30.7 in
- Published weight
- 391 lb
- Sound level stated by manufacturer
65 dB(A) at 23 ft — normal load; measured from the front; other sides may be higher.
55 dB(A) at 23 ft — Quiet-Test low-speed exercise; measured from the front; other sides may be higher.
- Fuel use at cited test loads
LP, 50% load: 1.76 gal/hr
LP, 100% load: 2.92 gal/hr
Natural gas, 50% load: 189 ft³/hr
Natural gas, 100% load: 243 ft³/hr
Manufacturer test values; actual consumption depends on load, fuel quality, site conditions, and the exact configuration.
- Starting MSRP shown on manufacturer page
- $5,949 USD
Published equipment/package starting MSRP; installation, taxes and local project scope are not included by this record.
- Transfer-switch scope
- Manufacturer identifies an included transfer-switch bundle; exact switch details are listed below where verified.
- Warranty summary
- Product page states a 5-year limited warranty. Full contract, hour limits, labor, travel and exclusions require confirmation.
Generac
Standby Generator, 18kW | Generac
Model G0072590
LP 18 kWNatural gas 17 kW
- Engine
- Generac G-Force 800
- Published dimensions (L × W × H)
- 46.42 × 26.3 × 30.7 in
- Published weight
- 426 lb
- Sound level stated by manufacturer
65 dB(A) at 23 ft — normal load; measured from the front; other sides may be higher.
55 dB(A) at 23 ft — Quiet-Test low-speed exercise; measured from the front; other sides may be higher.
- Fuel use at cited test loads
LP, 50% load: 1.65 gal/hr
LP, 100% load: 2.87 gal/hr
Natural gas, 50% load: 164 ft³/hr
Natural gas, 100% load: 235 ft³/hr
Manufacturer test values; actual consumption depends on load, fuel quality, site conditions, and the exact configuration.
- Starting MSRP shown on manufacturer page
- $5,709 USD
Published equipment/package starting MSRP; installation, taxes and local project scope are not included by this record.
- Transfer-switch scope
- Included transfer equipment is not established by the captured exact-model page. Require the complete generator and ATS package in writing.
- Warranty summary
- Product page states a 5-year limited warranty. Full contract, hour limits, labor, travel and exclusions require confirmation.
Generac
Standby Generator, 18kW | Transfer Switch Bundle | Generac
Model G0073240
LP 18 kWNatural gas 17 kW
- Engine
- Generac G-Force 800
- Published dimensions (L × W × H)
- 46.4 × 26.3 × 30.7 in
- Published weight
- 426 lb
- Sound level stated by manufacturer
65 dB(A) at 23 ft — normal load; measured from the front; other sides may be higher.
55 dB(A) at 23 ft — Quiet-Test low-speed exercise; measured from the front; other sides may be higher.
- Fuel use at cited test loads
LP, 50% load: 1.65 gal/hr
LP, 100% load: 2.87 gal/hr
Natural gas, 50% load: 164 ft³/hr
Natural gas, 100% load: 235 ft³/hr
Manufacturer test values; actual consumption depends on load, fuel quality, site conditions, and the exact configuration.
- Starting MSRP shown on manufacturer page
- $6,769 USD
Published equipment/package starting MSRP; installation, taxes and local project scope are not included by this record.
- Transfer-switch scope
- Manufacturer identifies an included transfer-switch bundle; exact switch details are listed below where verified.
- Warranty summary
- Product page states a 5-year limited warranty. Full contract, hour limits, labor, travel and exclusions require confirmation.
Generac
Standby Generator, 22kW | Transfer Switch Bundle | Generac
Model G0073250
LP 22 kWNatural gas 21 kW
- Engine
- Generac G-Force 1000 Series · 997 cc
- Published dimensions (L × W × H)
- 46.4 × 26.3 × 30.7 in
- Published weight
- 451 lb
- Sound level stated by manufacturer
67 dB(A) at 23 ft — normal load; measured from the front; other sides may be higher.
55 dB(A) at 23 ft — Quiet-Test low-speed exercise; measured from the front; other sides may be higher.
- Fuel use at cited test loads
Natural gas, 50% load: 221 ft³/hr
Natural gas, 100% load: 311 ft³/hr
LP, 50% load: 2.45 gal/hr
LP, 100% load: 3.71 gal/hr
Manufacturer test values; actual consumption depends on load, fuel quality, site conditions, and the exact configuration.
- Starting MSRP shown on manufacturer page
- $7,369 USD
Published equipment/package starting MSRP; installation, taxes and local project scope are not included by this record.
- Transfer-switch scope
- Manufacturer identifies an included transfer-switch bundle; exact switch details are listed below where verified.
- Warranty summary
- Product page states a 5-year limited warranty. Full contract, hour limits, labor, travel and exclusions require confirmation.
Generac
Standby Generator, 24kW | Transfer Switch Bundle | Generac
Model G0073260
LP 24 kWNatural gas 22.5 kW
- Engine
- Generac G-Force 1000 Series · 997 cc
- Published dimensions (L × W × H)
- 46.42 × 26.3 × 30.7 in
- Published weight
- 461 lb
- Sound level stated by manufacturer
67 dB(A) at 23 ft — normal load; measured from the front; other sides may be higher.
55 dB(A) at 23 ft — Quiet-Test low-speed exercise; measured from the front; other sides may be higher.
- Fuel use at cited test loads
Natural gas, 50% load: 197 ft³/hr
Natural gas, 100% load: 291 ft³/hr
LP, 50% load: 2.45 gal/hr
LP, 100% load: 3.71 gal/hr
Manufacturer test values; actual consumption depends on load, fuel quality, site conditions, and the exact configuration.
- Starting MSRP shown on manufacturer page
- $7,789 USD
Published equipment/package starting MSRP; installation, taxes and local project scope are not included by this record.
- Transfer-switch scope
- Manufacturer identifies an included transfer-switch bundle; exact switch details are listed below where verified.
- Warranty summary
- Product page states a 5-year limited warranty. Full contract, hour limits, labor, travel and exclusions require confirmation.
Generac
Standby Generator, 24kW | Generac
Model G0072610
LP 24 kWNatural gas 22.5 kW
- Engine
- Generac G-Force 1000 Series · 997 cc
- Published dimensions (L × W × H)
- 46.4 × 26.3 × 30.7 in
- Published weight
- 461 lb
- Sound level stated by manufacturer
67 dB(A) at 23 ft — normal load; measured from the front; other sides may be higher.
55 dB(A) at 23 ft — Quiet-Test low-speed exercise; measured from the front; other sides may be higher.
- Fuel use at cited test loads
Natural gas, 50% load: 197 ft³/hr
Natural gas, 100% load: 291 ft³/hr
LP, 50% load: 2.45 gal/hr
LP, 100% load: 3.71 gal/hr
Manufacturer test values; actual consumption depends on load, fuel quality, site conditions, and the exact configuration.
- Starting MSRP shown on manufacturer page
- $6,729 USD
Published equipment/package starting MSRP; installation, taxes and local project scope are not included by this record.
- Transfer-switch scope
- Included transfer equipment is not established by the captured exact-model page. Require the complete generator and ATS package in writing.
- Warranty summary
- Product page states a 5-year limited warranty. Full contract, hour limits, labor, travel and exclusions require confirmation.
Generac
Standby Generator, 26kW | Transfer Switch Bundle | Generac
Model G0073280
LP 26 kWNatural gas 24 kW
- Engine
- Generac G-Force 1000 Series · 997 cc
- Published dimensions (L × W × H)
- 46.4 × 26.3 × 30.7 in
- Published weight
- 524 lb
- Sound level stated by manufacturer
67 dB(A) at 23 ft — normal load; measured from the front; other sides may be higher.
55 dB(A) at 23 ft — Quiet-Test low-speed exercise; measured from the front; other sides may be higher.
- Fuel use at cited test loads
Natural gas, 50% load: 182 ft³/hr
Natural gas, 100% load: 316 ft³/hr
LP, 50% load: 2.05 gal/hr
LP, 100% load: 3.95 gal/hr
Manufacturer test values; actual consumption depends on load, fuel quality, site conditions, and the exact configuration.
- Starting MSRP shown on manufacturer page
- $8,219 USD
Published equipment/package starting MSRP; installation, taxes and local project scope are not included by this record.
- Transfer-switch scope
- Manufacturer identifies an included transfer-switch bundle; exact switch details are listed below where verified.
- Warranty summary
- Product page states a 5-year limited warranty. Full contract, hour limits, labor, travel and exclusions require confirmation.
Generac
Standby Generator, 28kW | Generac
Model G0072820
LP 28 kWNatural gas 25 kW
- Engine
- Generac G-Force 1000 Series · 997 cc
- Published dimensions (L × W × H)
- 46.4 × 26.3 × 30.7 in
- Published weight
- 524 lb
- Sound level stated by manufacturer
67 dB(A) at 23 ft — normal load; measured from the front; other sides may be higher.
55 dB(A) at 23 ft — Quiet-Test low-speed exercise; measured from the front; other sides may be higher.
- Fuel use at cited test loads
Natural gas, 50% load: 182 ft³/hr
Natural gas, 100% load: 297 ft³/hr
LP, 50% load: 2.23 gal/hr
LP, 100% load: 3.97 gal/hr
Manufacturer test values; actual consumption depends on load, fuel quality, site conditions, and the exact configuration.
- Starting MSRP shown on manufacturer page
- $8,159 USD
Published equipment/package starting MSRP; installation, taxes and local project scope are not included by this record.
- Transfer-switch scope
- Included transfer equipment is not established by the captured exact-model page. Require the complete generator and ATS package in writing.
- Warranty summary
- Product page states a 5-year limited warranty. Full contract, hour limits, labor, travel and exclusions require confirmation.
Generac
Standby Generator, 28kW with Transfer Switch and ecobee by Generac Smart Thermostat Bundle | Generac
Model G0073290
LP 28 kWNatural gas 25 kW
- Engine
- Generac G-Force 1000 Series · 997 cc
- Published dimensions (L × W × H)
- 46.4 × 26.3 × 30.7 in
- Published weight
- 524 lb
- Sound level stated by manufacturer
67 dB(A) at 23 ft — normal load; measured from the front; other sides may be higher.
55 dB(A) at 23 ft — Quiet-Test low-speed exercise; measured from the front; other sides may be higher.
- Fuel use at cited test loads
Natural gas, 50% load: 182 ft³/hr
Natural gas, 100% load: 297 ft³/hr
LP, 50% load: 2.23 gal/hr
LP, 100% load: 3.97 gal/hr
Manufacturer test values; actual consumption depends on load, fuel quality, site conditions, and the exact configuration.
- Starting MSRP shown on manufacturer page
- $9,509 USD
Published equipment/package starting MSRP; installation, taxes and local project scope are not included by this record.
- Transfer-switch scope
- Manufacturer identifies an included transfer-switch bundle; exact switch details are listed below where verified.
- Warranty summary
- Product page states a 5-year limited warranty. Full contract, hour limits, labor, travel and exclusions require confirmation.
Generac’s specification sheet says sound is measured from the front at 23 feet; readings from other sides may be higher depending on installation. The 55 dB(A) value is a low-speed Quiet-Test exercise figure, not a normal-operation sound rating. The 22 kW model sheet gives the same stated normal-load and Quiet-Test figures for its model family.
Fuel ratings are not interchangeable
Both models are dual-fuel units, but the manufacturer lists different available output on natural gas and LP. If a comparison shows one rating without naming its fuel, it is incomplete. Verify the fuel the site will actually use and have the installing professional confirm that the supply, pressure, and piping meet the model’s installation requirements at load.
These page-level ratings are not a sizing recommendation. Capacity for a particular house depends on the actual running loads, motor-starting requirements, selected backed-up circuits, and any approved load-management configuration. Start with the load-based sizing guide, then have a qualified local professional assess the property.
Starting MSRP is not an installed price
The manufacturer product pages displayed the starting MSRPs shown above when checked on October 4, 2026. The pages do not establish a completed project price or prove that the same transfer switch, load management, fuel work, permits, site preparation, or labor are included. Generac’s separate installation guidance gives a broad $8,000–$16,000 planning range including the generator, system equipment and materials, and installation; Generac says actual prices vary by location and project complexity. Treat that as the manufacturer’s general planning estimate—not a quote or a guaranteed market average.
When comparing bids, request an itemized scope for the same generator model, switch rating and service-entry arrangement, load-management devices, gas capacity and pipe work, electrical runs, pad/site preparation, permits, startup, and warranty coverage. See the cost guide for how other published estimates differ in scope.
Questions to ask before choosing a model
- Which exact model and fuel-specific output are in the quote?
- Is the quoted package generator-only, or does it include a named transfer switch? What are its amperage and service-entrance rating?
- What backed-up loads are supported simultaneously, and which loads will be shed or sequenced?
- Has the professional confirmed the existing gas meter, regulator, line size, and pressure can serve all connected appliances at generator load?
- Are electrical/fuel permits, inspections, trenching, pad, startup, and commissioning included?
- Which warranty document applies to the exact serial/model and installation, and who handles service in this area?
Do not choose a larger rating based only on square footage or a brand’s product label. The exact load list and installation conditions are what a site assessment must resolve.
Manufacturer claims and limits of this comparison
Generac describes features such as electronic fuel control, remote monitoring, and its engine design in product materials. Those descriptions are the manufacturer’s claims; this publication has not tested those features, compared long-term reliability, or verified service response in an individual market.
There is no universal “best” brand. Dealer availability, a correctly engineered installation, exact bundle scope, service arrangements, and the homeowner’s backed-up loads may matter more than a single headline specification. We do not publish star ratings or declare a winner from unlike MSRP bundles.