Generac NextGen 28kW Home Standby Generator | Cellular

Key Benefits

Automatic backup power that’s always ready

• Starts automatically during an outage and supplies power through your transfer switch configuration.

• Exercise scheduling helps keep the system prepared, with adjustable exercise duration (5–20 minutes; 5 minutes factory default).

Clean power for sensitive electronics

• True Power™ Electrical Technology produces less than 5% Total Harmonic Distortion (THD) for utility-quality electricity—ideal for modern electronics and many microchip-based appliances.

Smart monitoring + connected readiness

• Built-in connectivity supports remote monitoring of generator status, alerts, and readiness.

• Cellular connectivity is standard, with Wi-Fi and Bluetooth capability for setup and management.

Built for demanding weather

• Sound-attenuated, weather-protective enclosure engineered for durability.

• Enclosure design is engineered to withstand winds up to 150 mph (241 km/h).

Flexible installation footprint (when installed to code)

• Listed and labeled allowing installation as close as 18 in (457 mm) to a structure when properly located away from doors, windows, and fresh air intakes and installed per local code.

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What’s Included (Generator System Features)

• Cellular connectivity standard, with Wi-Fi™ and Bluetooth™ capabilities

• Electronic fuel and ignition control (EFIC)

• Hydraulic lifters

• Smart Exercise Technology

• True Power™ Electrical Technology (<5% THD)

• Power Zone™ 200 Controller

• Electronic governor

• Oil level sensor

• System status & maintenance interval LED indicators

• Sound-attenuated enclosure

• Natural gas or LP gas operation

• 5-Year limited warranty (generator and transfer switch)

Bundled models include a 200A service-rated transfer switch.
The 28kW bundle model also includes built-in HVAC energy management via an ecobee by Generac Smart Thermostat.

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Output Ratings (28kW Model)

Standby output varies by fuel type:

• Liquid Propane (LP): 28 kW

• Natural Gas (NG): 25 kW

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Technical Specifications — Generac 28kW

Electrical

• Rated voltage: 240V

• Phase: 1

• Frequency: 60 Hz

• Power factor: 1.0

• Rotor poles: 2

• Rated maximum continuous load current @ 240V (LP / NG): 116A / 104A

• Total harmonic distortion (THD): < 5%

• Main line circuit breaker: 125A

Sound Levels (measured at 23 ft / 7 m)

• Normal load operation: 67 dB(A)

• Quiet-Test™ low-speed exercise mode: 55 dB(A)
  (Sound levels are taken from the front of the generator; other sides may be higher depending on installation parameters.)

Dimensions & Weight (Generator Only)

• Dimensions (L × W × H): 46.4 × 26.3 × 30.7 in (117.9 × 66.8 × 77.9 cm)

• Unit weight (without battery): 524 lb (238 kg)

Dimensions shown are approximate. Always follow the installation manual for exact clearances and placement.

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Battery Requirement (Not Included)

Every standby generator requires a battery to start:

• 12V AGM Powersport Battery — Group BTX20L

• 310 CCA minimum

• Recommended Generac battery model: A0006487350

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Engine & Controller Highlights

Generac G-Force™ 1000 Series Engine

• Engine type: Generac G-Force 1000 Series

• Cylinders: 2

• Displacement: 997 cc

• Cylinder block: Aluminum with cast iron sleeve

• Valve arrangement: Overhead valve (OHV)

• Lifters: Hydraulic

• Ignition: Solid-state

• Governor: Electronic

• Compression ratio: 10.1:1

• Starter: 12 VDC

• Oil capacity (including filter): Approx. 2.2 qt (2.1 L)

• Operating speed: 3,600 RPM

Power Zone™ 200 Controller

Designed for standby reliability with clear system status indication and flexible programmability, including:

• Automatic operation control and system status indicators

• Maintenance interval LEDs and protective shutdown logic

• Exercise scheduling and adjustable exercise duration

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Fuel Type, Fuel Usage (Consumption), and Fuel Pressure Requirements

Fuel type

• Natural Gas (NG) or Liquid Propane (LP vapor)

Fuel consumption — 28kW

Natural Gas (ft³/hr [m³/hr])

• 1/2 Load: 182 ft³/hr (5.15 m³/hr)

• Full Load: 297 ft³/hr (8.41 m³/hr)

Liquid Propane (ft³/hr [gal/hr] [L/hr])

• 1/2 Load: 81 ft³/hr (2.23 gal/hr) [8.45 L/hr]

• Full Load: 144 ft³/hr (3.97 gal/hr) [15.02 L/hr]

Required inlet fuel pressure (at generator fuel inlet, all load ranges)

• NG: 3.5–7 in. water column (0.87–1.74 kPa)

• LP: 10–12 in. water column (2.49–2.99 kPa)

Fuel piping must be properly sized for full-load operation and installed per applicable code.

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Transfer Switch (Bundled Models) — 200A Service-Rated

Bundled systems include a 200A, 120/240V, 1-phase, 2-pole service-rated transfer switch designed for long life and fast, clean transfers:

Switch highlights

• Electrically operated, mechanically held contacts

• Rated for inductive and resistive loads (80% continuous load)

• NEMA/UL 3R aluminum enclosure for indoor/outdoor mounting flexibility

• Rated for aluminum and copper conductors

• Includes fuse control module (FCM) (model dependent)

• Integrated surge protection (included with 28kW bundle model)

Transfer switch specs

• Current rating: 200A

• Voltage rating: 120/240V, 1Ø

• Enclosure type: Standard NEMA/UL 3R

• Circuit breaker protected: 22,000

• Lug range: 250 MCM – #6

• Weight: 39.0 lb (17.7 kg)

• Dimensions (H × W × D):

  • Height: 26.75–30.1 in (67.95–76.45 cm)

  • Width: 10.5–13.5 in (26.67–34.3 cm)

  • Depth: 6.3 in (16.01 cm)

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Included Smart Thermostat (28kW Bundle Model)

The 28kW bundle model includes an ecobee by Generac Smart Thermostat with built-in HVAC energy management:

• Built-in HVAC energy management (bundle model feature)

• Full-color touchscreen display

• EnergyStar® certified

• Operating temperature: 14°F to 122°F (-10°C to 50°C)

• Thermostat dimensions: 4.09 × 4.09 × 0.94 in (10.39 × 10.39 × 2.39 cm)

• Weight: 1.1 lb (0.49 kg)

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Model Numbers & UPCs (28kW)

28kW Generator (Unbundled)

• Model: G007282-0

• UPC: 696471103748

28kW Generator + 200A Transfer Switch Bundle

• Model: G007329-0

• UPC: 696471104769

Finish: Aluminum enclosure in Metro Gray

Certification note (important for buyers): CETL certification applies to unbundled generator units; units bundled with the transfer switch are ETL certified in the USA only (verify local code requirements for your jurisdiction and configuration).

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Common Add-Ons (Popular with 28kW Systems)

• AGM BTX20L Battery: A0006487350 (required)

• Battery Heater: G007211-0 (recommended if temps regularly fall below 32°F / 0°C)

• Oil Heater: G007102-1 (recommended if temps regularly fall below 32°F / 0°C)

• Breather Heater: G007103-2 (recommended if temps regularly fall below 0°F / -18°C)

• Scheduled Maintenance Kit (oil not included): G007216-0

• LTE LP Tank Fuel Level Monitor: G007009-0

• Load Managers: G007000-1 (50A) / G007006-1 (100A) for optimizing startup loads and shedding large loads during recovery if overloaded

• Touch-Up Paint Kit (Metro Gray): G009918-0-Metro Gray