This generator can meet the NFPA 110 code with the proper transfer switch (10 second start), reliable and continuous fuel supply, engine coolant heater and battery with a battery heater. The coolant heater is model #A050M046, battery cold start is model #A945P632, and the battery heater is model #A046G494. These can all be ordered directly with the manufacturer.
Free Gift Card Details
- The promotion will be automatically applied on the Shopping Cart page.
- To qualify for this offer, your order subtotal must equal $100 or more. Excludes gift cards, free item offers, warranties, Advantage memberships, tax and shipping.
- Free gift cards will be issued in the form of e-gift cards only, not physical gift cards.
- E-gift cards will be sent to the email address used in your billing address when your order ships or is picked up.
- Free e-gift cards expire 10/01/26.
- Promo code not valid on prior purchases or on Honda and STIHL products and cannot be combined with other promotional offers.
- Valid online and in participating retail stores.
- Limited-time offer. Subject to change without notice.
Cummins Commercial Standby Generator, 25kW, LP/NG, 120/240 Volts, Single-Phase, Model# RS25

This is a carousel with one large zoomable image and a track of thumbnails on the left. Select any of the thumbnail buttons to change the zoomable image on the right. If a thumbnail is a video or 360 degree image thumbnail, or the last thumbnail in the list, the button will open the product media modal.

Click or Tap image to Zoom
Shipping:
Free shipping (lower 48 states) - Factory shippedHeavy/large item. Lift gate service available.
Store Pickup:
Not available - online only
- Powered by the Cummins QSJ2.4G engine: Designed to be extremely quiet and neighborhood friendly
- Compact and aesthetically pleasing design blends into your landscape
- Generator equipped with Cummins PowerCommand electronic control to provide industry leading self-diagnostic capabilities
- Robust design so the generator can handle even the harshest of weather conditions
- Flexible exercise mode to suit your preference and reduces unnecessary fuel consumption, emissions and noise
See full description
Description
Key Specs
Reviews
Q & A
Accessories
Warranty
Compare
Product Summary
What's Included
- (1) Generator set
Downloads
Features + Benefits
- Powered by the Cummins QSJ2.4G engine: Designed to be extremely quiet and neighborhood friendly
- Compact and aesthetically pleasing design blends into your landscape
- Generator equipped with Cummins PowerCommand electronic control to provide industry leading self-diagnostic capabilities
- Robust design so the generator can handle even the harshest of weather conditions
- Flexible exercise mode to suit your preference and reduces unnecessary fuel consumption, emissions and noise
- Operates on natural gas or propane
- Length 72 inches, width 34.0 inches, height 45.5 inches
- Weight of generator is 1109 pounds
- Sound level as low as 64 dB(A) at 23 feet with optional Sound Level 2 Enclosure (pictures in images)
- Cummins 2-year warranty including parts, labor, and travel with optional extended warranties up to 10 years
Key Specs
| Attribute | Specification |
|---|---|
item# | 88810 |
Brand | Cummins Power |
Manufacturer's Warranty | 2 year limited warranty |
Ship Weight | 1109.0 LB |
Voltage | 120/240 |
Rated Kilowatts LP | 25 |
Surge Kilowatts LP | 25 |
Rated Kilowatts NG | 25 |
Surge Kilowatts NG | 25 |
Max. Amps | 104.2 |
Fuel Type | Dual Fuel - Natural Gas and Propane |
Engine Brand | Cummins |
Engine Model | QSJ2.4 |
Engine Displacement | 2,400 cc |
| Attribute | Specification |
|---|---|
Noise Level | 69 dB |
Enclosure Material | Aluminum |
Start Type | Automatic and Manual |
Battery Required | Yes |
Battery Included | No |
Auto Shutdown | Yes |
Overload Protection | Yes |
Low Oil Shutdown | Yes |
Hour Meter | Yes |
Hertz | 60 |
Engine Cooling | Liquid |
Total Harmonic Distortion | <5% |
Product Weight | 1109.0000 lb |
Dimensions L x W x H (in.) | 72.0 x 34.0 x 45.5 in |
Reviews
Questions & Answers
Questions
-
· 5 years ago
does this generator meet the NFPA 110 compliance
1 answer-
ProductExpert29· 5 years ago
Helpful?
-
-
· 5 years ago
What is the fuel consumption of LP gas under full load?
1 answer-
ProductExpert31· 5 years ago
This will consume 125.4 Standard Cubic Feet per Hour (SCFH) of propane at full load.
Helpful?
-
-
· 5 years ago
Is this split phase 120/240 ? Specs shows 120/208.
1 answer-
ProductExpert12· 5 years ago
This model is single phase 120/240V.
Helpful?
-
-
· 5 years ago
at what rpm does this unit run.
1 answer-
ProductExpert13· 5 years ago
This generator runs at 1800 RPM.
Helpful?
-
-
· 5 years ago
How many gallons is the tank.
1 answer-
ProductExpert7· 5 years ago
This doesn't have a fuel tank. The generator has connections for either Liquid Propane or Natural Gas. Installation should be done by a certified professional.
Helpful?
-
Accessories We Recommend
This is a carousel with auto-rotating slides. Activate any of the buttons to disable rotation. Use Next and Previous buttons to navigate, or jump to a slide with the slide dots.
Warranty
Manufacturer's Warranty
2 year limited warranty
Compare with Most Popular in Home Standby Generators
See All Home Standby Generators
See All Cummins Power Home Standby Generators
Currently Viewing This Product
Item # 88810
$17,099.99Shipping:
Free shipping (lower 48 states) - Factory shippedHeavy/large item. Lift gate service available.
Store Pickup:
Not available - online only
Item # 88587
$4286.47Shipping:
Free shipping (lower 48 states) - Factory shippedHeavy/large item. Lift gate service available.
Store Pickup:
Not available - online only
- $5167.05
Shipping:
Free shipping (lower 48 states) - Factory shippedHeavy/large item. Lift gate service available.
Store Pickup:
Not available - online only
- $6662.42
Shipping:
Free shipping (lower 48 states) - Factory shippedHeavy/large item. Lift gate service available.
Store Pickup:
Not available - online only
Specifications
120/240
120/240
120/240
120/240
25
13
17
20
25
13
-
20
25
13
17
18
25
13
-
18
104.2
54.2
70.8
84
Dual Fuel - Natural Gas and Propane
Dual Fuel - Natural Gas and Propane
Dual Fuel - Natural Gas and Propane
Dual Fuel - Natural Gas and Propane
Cummins
Cummins
Cummins
Cummins
QSJ2.4
QSJ999
QSJ999
QSJ999
2,400 cc
999 cc
999 cc
999 cc
69 dB
65 dB
64 dB
65 dB
Aluminum
Aluminum
Aluminum
Aluminum
Automatic and Manual
Automatic and Manual
Automatic and Manual
Automatic and Manual
Yes
Yes
Yes
Yes
No
No
No
No
Yes
Yes
Yes
Yes
Yes
-
-
-
Yes
-
-
Yes
Yes
-
-
-
60
-
-
60
Liquid
Air
Air
Yes
<5%
<5%
-
<5%
1109.0000 lb
479.0000 lb
531.0000 lb
596.0000 lb
72.0 x 34.0 x 45.5 in
34.125 x 36.0 x 27.3125 in
34.125 x 36.0 x 27.3125 in
34.125 x 36.0 x 27.3125 in
-
-
-
200
See All Home Standby Generators
See All Cummins Power Home Standby Generators
Recently Viewed Items
This is a carousel with auto-rotating slides. Activate any of the buttons to disable rotation. Use Next and Previous buttons to navigate, or jump to a slide with the slide dots.








