Buyer verdict for these exact configurations
Best fit if — Generac G0073270: Choose the G0073270 proposal when the installer identifies the separate ATS, confirms your fuel-specific load plan, and provides the stronger written local service and installation scope.
Choose the other option if — KOHLER 26RCA: Choose the 26RCA proposal when its documented warranty terms better fit your ownership priorities and the installer resolves the conflicting ATS-inclusion wording in writing. Confirm whether the quote actually specifies the separate 26RCAL package.
Skip conditions, confidence and evidence gaps
Skip if: Neither proposal is ready if transfer scope or the provider responsible for warranty work is unresolved.
What would change our verdict: A different exact SKU, an applicable warranty contract, resolved package evidence or a materially different local service commitment.
Confidence: Conditional editorial interpretation of published specifications. No comparative reliability verdict or property-specific sizing approval.
Evidence gaps: No controlled head-to-head noise test, independent failure-rate dataset or verified local price comparison.
Next: obtain matching scopes in the three-quote planner and confirm local service.
Generac vs Kohler whole house generator models and scope
This Generac vs Kohler whole house generator comparison uses the Generac G0073270 26 kW and the single-phase 120/240 V KOHLER 26RCA. Each is listed at 26 kW on LP and 24 kW on natural gas in its cited configuration. “26 kW” is the LP rating here; an NG installation has a lower nameplate rating.
The manufacturer documents were checked on October 4, 2026. This is a comparison of published data, not an independent test, reliability study, or recommendation for a specific home. Rehlko’s sheet also lists three-phase configurations within the broader 26RCA family; those are not the single-phase residential configuration used below.
Quick decision summary: Generac vs Kohler
Neither brand wins from the logo alone. For the exact models reviewed here, both selected single-phase units publish 26 kW on LP and 24 kW on natural gas. The more useful decision is which written proposal gives you the correct fuel-specific capacity, clearly identified transfer equipment, stronger local service path, and fully documented warranty and installation scope.
| Decision factor | Generac G0073270 | KOHLER 26RCA / 26RCAL context |
|---|---|---|
| Fuel-specific output | 26 kW LP · 24 kW natural gas | 26 kW LP · 24 kW natural gas for the selected single-phase residential configuration |
| Transfer equipment | The exact G0073270 product page does not establish an included ATS; bundled family configurations exist and must be identified in the quote. | 26RCAL is the ATS-inclusive package with a 200 A service-entrance-rated RXT switch; the 26RCA page has conflicting ATS-inclusion wording. |
| Published warranty summary | 5-year limited warranty on the product page; confirm the current full contract and local service responsibilities. | Current spec sheet states 5 years / 2,000 hours and describes parts, labor and travel; confirm the applicable contract for the quoted unit. |
| Published sound context | 67 dB(A) at 23 ft in normal-load conditions measured from the front; other sides may differ. | 67 dB(A) at 23 ft during full-speed diagnostics / normal operation; document notes the listed value is the lowest of eight points. |
| Local service path | Not established by the model spec sheet. Verify who commissions, services and performs warranty work in your area. | Not established by the model spec sheet. Verify who commissions, services and performs warranty work in your area. |
Use the table as a quote-screening framework, not a brand score. If two proposals look similar on price, compare the complete equipment package, fuel design, service responsibility, exclusions, and warranty support before deciding.
Side-by-side specifications
| Published field | Generac G0073270 | KOHLER 26RCA |
|---|---|---|
| Standby output | 26 kW LP; 24 kW natural gas | 26 kW LP; 24 kW natural gas (single-phase, 120/240 V) |
| Natural-gas consumption at 50% load | 182 ft³/hr | 180 ft³/hr |
| LP consumption at 50% load | 2.05 gal/hr | 85 ft³/hr |
| Engine | Generac G-Force 1000; 997 cc | KOHLER CH1006; 999 cc |
| Published dimensions (L × W × H) | 46.4 × 26.3 × 30.7 in | 47 × 26 × 32.3 in |
| Starting MSRP on product page | $7,159 | $7,546 (26RCA, ATS scope unresolved) |
| Transfer-switch scope | 200 A service-rated switch is specified for bundled models; G0073270 product page does not establish an included switch. | The 26RCAL package includes a 200 A service-entrance-rated RXT ATS; 26RCA is also listed separately. |
| Published warranty summary | 5-year limited warranty (Generac product page) | 5-year/2,000-hour limited; official spec sheet says parts, labor, and travel |
Fuel-use values are manufacturer test points and depend on load and fuel conditions; do not convert a 50% test point into a household bill without current local fuel prices and actual operating hours. The two dimensions come from manufacturer pages/documents and are not an installation plan.
Sound ratings: the figures are close, but the tests differ
- Normal-operation/full-speed: Generac lists 67 dB(A) at 23 feet at normal load, measured from the front. KOHLER lists 67 dB(A) at 23 feet during full-speed diagnostics and normal operation; its document says this is the lowest of eight measured points and other points may differ.
- Exercise mode: Generac lists 55 dB(A) at 23 feet during Quiet-Test low-speed exercise, measured from the front. KOHLER lists 56 dB(A) at 23 feet during engine exercise; its sheet again notes the lowest of eight measured points.
These are not independent acoustic tests, and a different microphone position, wall, enclosure placement, load, or mode changes what a listener hears. Do not read a one- or two-decibel numerical difference here as proof that one unit is quieter at a particular property. Check local noise rules and the exact installation manual.
Starting MSRP and warranty are not equal-scope shorthand
Current stored starting MSRP: $7,159 for G0073270 and $7,546 for 26RCA. These are not installed prices. Included transfer equipment is not established by the captured exact-model page. Require the complete generator and ATS package in writing. Unresolved manufacturer-page conflict: specification table says ATS included, while the same page’s RCA/RCAL FAQ says RCA switches are sold separately. Exact package must be confirmed in writing. Check the 26RCAL record separately for its bundle.
Generac states a 5-year limited warranty for the generator. The 2026 KOHLER/Rehlko spec sheet states a 5-year/2,000-hour limited warranty covering parts, labor, and travel. Those descriptions differ in detail; confirm the current full warranty terms, exclusions, registration rules, coverage start, and servicing dealer for the exact equipment being quoted.
How to choose between written quotes
There is no universal winner from the manufacturer specifications reviewed here. A sound choice depends on the selected fuel, load analysis, local service capability, exact transfer-switch package, warranty terms, installation proposal, and any local constraints.
- Have the same backed-up loads and motor-starting assumptions evaluated for each proposal.
- Require exact generator and ATS model numbers and identify whether the switch is service-entrance rated.
- Compare line items for fuel and electrical connections, site work, permits, load management, startup, and commissioning.
- Read the warranty documents and ask who provides local service and what travel/labor it covers.
- Ask the installer to confirm code, clearances, fuel pressure/flow, local permits, and the authority having jurisdiction’s requirements.
For background, see our separate Generac model guide, KOHLER model guide, and sizing guide.
Related decision path
Turn the brand comparison into a project decision
Use the same load plan, cost scope and installation assumptions when comparing Generac and Kohler proposals.