Generac 26kW Standby 7328
#2 in Over 22 kWFull review
For larger homes with two air conditioners that want to run everything without load shedding.
Amazon $7,253.10$7,253.10
3.1/5
For big all-electric homes that want the most output Generac fits in an air-cooled cabinet.
- 28 kWPropane
- 25 kWNatural gas
- Included, 200 ATransfer switch
- 5 yearsWarranty
Check price at Amazon$8,387.10
Price checked November 1, 2026. As an Amazon Associate we earn from qualifying purchases.
Pros
- The most output in an air-cooled Generac, for big all-electric homes
- Bundled smart thermostat can hold back the air conditioner so big loads never overlap
- Cellular monitoring included, no home Wi-Fi needed
Cons
- Costs the most per unit in the line
- Natural gas output drops to 25 kW
- Amazon shows a long lead time
The Generac Air-Cooled Standby (2025) family
Every Generac Air-Cooled Standby (2025) model we rank, smallest first. Ratings compare each against its own size.
| Model | Propane | Rating | Price |
|---|---|---|---|
| Generac 10kW Standby 7321 | 10 kW | 3.5/5 | $3,896.10 |
| Generac 14kW Standby 7323 | 14 kW | 3.4/5 | $5,255.10 |
| Generac 18kW Standby 7324 | 18 kW | 3.2/5 | $5,975.10 |
| Generac 22kW Standby 7325 | 22 kW | 3.4/5 | $6,506.10 |
| Generac 24kW Standby 7326 | 24 kW | 3.2/5 | $6,875.10 |
| Generac 26kW Standby 7328 | 26 kW | 3.2/5 | $7,253.10 |
| Generac 28kW Standby 7329 (this one) | 28 kW | 3.1/5 | $8,387.10 |
How it scores
The rating comes from 5 measured or published factors, each scored 0-100 against fixed reference points for its size. How we rank explains each one.
Specifications
| Model number | 7329 (G007329-0) |
|---|---|
| Output | |
| Rated output, propane | 28 kW |
| Rated output, natural gas | 25 kW |
| THD | Under 5% |
| Engine | 997 cc |
| Engine speed | 3,600 rpm |
| Install | |
| Transfer switch | Included, 200 A |
| Load management | Yes |
| Remote monitoring | Yes |
| Enclosure | Aluminum |
| Dimensions | 46.4 x 26.3 x 30.7 in |
| Weight | 524 lb |
| Noise and warranty | |
| Noise, normal operation | 67 dBA |
| Noise, weekly self-test | 55 dBA |
| Warranty | 5 years |
| Released | 2025 |
Alternatives in this size
Generac 24kW Standby 7326
#3 in Over 22 kWFull review
For larger homes with a big air conditioner or electric range that want headroom on propane.
Amazon $6,875.10$6,875.10
Kohler 26RCAL 26kW
#5 in Over 22 kWFull review
For larger homes that want the biggest Kohler air-cooled unit with automatic load shedding and full service coverage.
Norwall $8,349$8,349
Compare
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