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Kohler 20kW Dual Fuel Home Standby Generator
- $2,725.00
- Brands Kohler Power
- Product Code: 20RCAL-200SELS
- Availability: In Stock
Kohler Power 20,000 Watt (20kW) Dual Fuel 50-State Air-Cooled Home Standby Generator with 200-Amp Transfer Switch Product Description The Kohler Power 20,000 Watt (20kW) Dual Fuel Air-Cooled Home Standby Generator is designed to provide dependable automatic backup power for residential properties when utility electricity is interrupted. The KOHLER 20RCA operates on either liquid propane (LP) or ..
Whole House 20kW Generator with 200 Amp Transfer Switch
Kohler Power 20,000 Watt (20kW) Dual Fuel 50-State Air-Cooled Home Standby Generator with 200-Amp Transfer Switch
Product Description
The Kohler Power 20,000 Watt (20kW) Dual Fuel Air-Cooled Home Standby Generator is designed to provide dependable automatic backup power for residential properties when utility electricity is interrupted. The KOHLER 20RCA operates on either liquid propane (LP) or natural gas (NG), giving homeowners flexibility when choosing a fuel source.
The generator is rated at 20kW on LP and 18kW on natural gas and produces 120/240V single-phase power at 60 Hz. It uses a 999 cm³ KOHLER CH1000 V-twin engine, an RDC2 controller, and a 2-pole rotating-field alternator. KOHLER specifies a response time of approximately 10 seconds when used with a compatible automatic transfer switch.
Package note: The standard 20RCA generator is sold without an automatic transfer switch. KOHLER's 20RCAL is the bundled version that includes an ATS. Because the requested product is described as including a 200A transfer switch, the exact ATS model should be verified with the seller or package documentation.
Key Features
- 20kW rated output on liquid propane
- 18kW rated output on natural gas
- Dual-fuel operation
- 50-state-compliant configuration
- Air-cooled engine
- KOHLER CH1000 V-twin engine
- 999 cm³ / 61 cu. in. displacement
- 120/240V single-phase output
- 60 Hz operating frequency
- RDC2 digital controller
- Approximately 10-second response time
- 2-pole rotating-field alternator
- Aluminum enclosure
- Remote monitoring capability
- Automatic standby operation with compatible ATS
- Five-year limited warranty
20kW LP / 18kW Natural Gas Output
The 20RCA provides different rated output depending on the selected fuel:
| Fuel | Rated Output | Rated Current at 240V |
|---|---|---|
| Liquid Propane | 20kW | 83A |
| Natural Gas | 18kW | 75A |
This capacity makes the generator suitable for substantial residential loads, although the actual combination of appliances and equipment that can operate simultaneously depends on the home's load calculation and the starting requirements of individual electrical loads.
Dual-Fuel Operation
The generator can run on either natural gas or liquid propane, allowing it to adapt to different residential fuel infrastructures.
Natural gas can be supplied from an appropriate utility connection, while LP operation requires a properly sized propane storage tank and fuel system. The generator should be configured and installed according to KOHLER specifications and applicable local requirements.
The ability to use two fuel types can be particularly useful for homeowners who want an alternative fuel option for long-duration outages.
KOHLER CH1000 Engine
The 20RCA is powered by the KOHLER CH1000 engine. It uses a V-twin cylinder arrangement with 999 cm³ (61 cu. in.) displacement and operates at 3,600 RPM.
KOHLER lists engine output at approximately 30.9 HP on LP and 27.1 HP on natural gas.
The engine is paired with KOHLER's 2-pole rotating-field alternator to provide stable 120/240V residential power.
Automatic Backup Power
When paired with a compatible automatic transfer switch, the generator can operate without requiring the homeowner to manually start or stop it.
During an outage, the ATS detects the loss of utility power and signals the generator to start. Once generator power is available, the ATS transfers the connected electrical loads from utility power to generator power.
When utility service is restored, the ATS transfers the loads back to the utility source and the generator completes its shutdown sequence. KOHLER specifies a response time of approximately 10 seconds.
200-Amp Transfer Switch
A 200A ATS can be used with the generator as part of a residential standby-power system, but the two ratings should not be confused.
The generator produces 83A on LP or 75A on natural gas at 240V, while the ATS's 200A rating refers to the amount of electrical current the transfer equipment is designed to switch. A 200A transfer switch does not increase the generator's output to 200A.
KOHLER offers 200A ATS models with different configurations, including versions with and without load centers and service-entrance models.
For example, KOHLER's RDT-CFNC-0200B-QS7 is a 200A, 240V, 2-pole ATS with an integrated load center, while the RDT-CFNC-200ASEQS4 is a 200A service-entrance model. The appropriate configuration depends on the home's electrical service and installation requirements.
RDC2 Digital Controller
The RDC2 controller manages the generator's operating functions and provides information about system status. KOHLER specifically identifies the RDC2 controller for the 20RCA and 20RCAL models.
The controller is designed to support automatic standby operation and simplify generator monitoring.
Power Quality and Motor Starting
The 20RCA is designed to provide regulated electrical power for residential equipment and electronics. KOHLER highlights its voltage and frequency regulation and low harmonic distortion as features intended to provide quality generator power.
The generator also uses PowerBoost™ technology to provide additional starting capability for motor-driven loads. Actual starting performance depends on the specific equipment being powered, so large motors and compressors should be evaluated as part of the overall generator-sizing process.
Durable Aluminum Enclosure
The generator uses an aluminum enclosure designed for outdoor installation. KOHLER states that the enclosure is designed to withstand winds of up to 181 mph and that the enclosure panels can be removed without tools for easier maintenance access.
KOHLER also specifies a compact installation design, with its documentation indicating an 18-inch clearance to combustible materials under the applicable guidelines; local codes and installation requirements should always be checked.
Exercise and Maintenance
Regular exercise helps keep a standby generator ready for an outage. KOHLER lists several exercise options for the 20RCA/20RCAL family, including:
- Unloaded weekly exercise with complete system diagnostics
- Unloaded full-speed exercise
- Loaded full-speed exercise when used with the required RXT ATS configuration
The listed exercise duration is 20 minutes.
Product Specifications
| Specification | Details |
|---|---|
| Brand | Kohler Power |
| Generator Model | 20RCA |
| Product Type | Air-Cooled Home Standby Generator |
| LP Rated Output | 20kW |
| Natural Gas Rated Output | 18kW |
| Fuel Type | Liquid Propane / Natural Gas |
| Compliance | 50-state configuration |
| Voltage | 120/240V |
| Phase | Single phase |
| Frequency | 60 Hz |
| LP Current at 240V | 83A |
| NG Current at 240V | 75A |
| Engine | KOHLER CH1000 |
| Engine Configuration | V-twin |
| Displacement | 999 cm³ / 61 cu. in. |
| Engine Speed | 3,600 RPM |
| Horsepower - LP | 30.9 HP |
| Horsepower - NG | 27.1 HP |
| Alternator | 2-pole, rotating field |
| Controller | RDC2 |
| Cooling | Air cooled |
| Response Time | Approx. 10 seconds |
| Enclosure Material | Aluminum |
| Dimensions | 47 × 26.2 × 32.2 in. |
| Weight | 555 lb. |
| Sound Level - Weekly Exercise | 64 dB(A) |
| Sound Level - Full Speed | 69 dB(A) |
| NG Fuel Consumption at 50% Load | 161 cfh |
| LP Fuel Consumption at 50% Load | 82 cfh |
| Remote Monitoring | Available/included on current 20RCA listing |
| Warranty | Premium 5-year limited |
| Country of Origin | United States |
| Transfer Switch | Sold separately for 20RCA |
KOHLER's current 20RCA listing provides the specifications above, including the 20/18kW fuel-dependent output, 555-lb. weight, dimensions, fuel consumption, sound levels, and RDC2 controller.
Fuel Consumption
At 50% load, KOHLER lists approximate fuel consumption of:
- Natural Gas: 161 cubic feet per hour
- Liquid Propane: 82 cubic feet per hour
Actual consumption will vary depending on electrical load, ambient conditions, fuel pressure, and operating conditions.
Ideal Applications
The 20RCA is well suited for:
- Large residential homes
- Whole-home or extensive-load backup
- Central air-conditioning systems
- Refrigerators and freezers
- Well and sump pumps
- Heating equipment
- Home offices
- Security systems
- Networking and communications equipment
- Essential household appliances
- Properties experiencing frequent power interruptions
Installation Considerations
The 20RCA is a permanently installed standby generator and should be installed by qualified professionals. Installation requires proper consideration of:
- Electrical load calculations
- Generator and ATS compatibility
- Fuel-line sizing and pressure
- Electrical connections
- Grounding and bonding
- Exhaust and ventilation
- Generator clearances
- Local electrical and building codes
- Fuel-system regulations
- Required permits and inspections
The 200A ATS should be selected based on the home's electrical-service configuration. KOHLER provides 200A ATS options with different features, so the complete transfer-switch model should be verified before purchase.
20RCA vs. 20RCAL
For product listings, it is important to distinguish between these two closely related models:
| Feature | 20RCA | 20RCAL |
|---|---|---|
| Generator Output - LP | 20kW | 20kW |
| Generator Output - NG | 18kW | 18kW |
| Fuel | LP / NG | LP / NG |
| Controller | RDC2 | RDC2 |
| Aluminum Enclosure | Yes | Yes |
| Automatic Transfer Switch | Sold separately | Included |
| Weight | 555 lb. | 611 lb. |
| Dimensions | 47 × 26.2 × 32.2 in. | 47 × 26.2 × 32.2 in. |
KOHLER explicitly identifies the 20RCA as the generator-only configuration and the 20RCAL as the bundled configuration with an automatic transfer switch.
Therefore, if the product being sold specifically includes a 200A transfer switch, the package should identify the exact ATS model and whether it is a standard, load-center, or service-entrance configuration.
Why Choose the Kohler 20RCA?
The Kohler Power 20,000 Watt (20kW) Dual Fuel 50-State Air-Cooled Home Standby Generator offers a strong combination of output, fuel flexibility, automatic operation, and residential-friendly installation features.
With 20kW on LP, 18kW on natural gas, a 999cc V-twin engine, RDC2 controller, aluminum enclosure, remote monitoring capability, and approximately 10-second response time, the 20RCA is designed for homeowners who need dependable backup power for a substantial portion of their electrical system.
For a package marketed with a 200A automatic transfer switch, verify the complete ATS model before purchase. This ensures that the transfer equipment matches the home's service requirements and provides the desired features, such as a load center or service-entrance capability.