Best overall Champion 14kW aXis (100837) $4999
Highest overall score (82/100) — the strongest balance of specs, value and recency in this group.
See on Amazon →Independent · sourced · Updated July 2026
Best Standby Generators (2026)
The best overall standby generator is Champion 14kW aXis (100837) ($4999). The best value standby generator is Champion 8.5kW Home Standby (100174) ($2299). The cheapest is Champion 8.5kW Home Standby (100174) at $2299. 10 standby generators compared from $2299 to $17900 across 5 brands — every figure sourced, updated July 2026.
10 standby generators compared on the specs that matter and US price — ranked cheapest-first. Every spec and price links to its source and the date we captured it.
Our data Across the 10 standby generators we priced, the most expensive lists for 162% more than the best-specced one — Briggs & Stratton PowerProtect DX 26kW at $6,833 — so the premium mostly buys the badge, not better hardware. Premium Myth study, as of July 2026.
Which standby generator should you buy?
Three buyer-intent picks from the algorithmic ranking below — no paid placement.
As an Amazon Associate we earn from qualifying purchases. Prices verified 2026-07-11; live price may differ.
Key takeaways
- Lowest price: Champion 8.5kW Home Standby (100174) at $2299 (FactoryPure (authorized Champion dealer, SKU 100174) lists "$ 2,299.00" for this unit (currently out of stock; the model is discontinued and replaced by the 100177). Amazon shows "Currently unavailable" with no price and Norwall's price fields are blank (Discontinued), and Champion publishes no MSRP for this discontinued model, so $2,299.00 is recorded as a typical US retail price.).
- Typical price: from $2299, median $6984.50, up to $17900 — across 10 priced.
- Tracked: 10 products across 5 brands, current through 2026-07-11.
- Compared on: Rated output lp (kW), Rated output ng (kW), Fuel type, Cooling type, Transfer switch amps, Engine displacement cc.
Best by the numbers
Objective winners — each is the leader on one measured spec, with the figure. No subjective ranking.
- Lowest price: Champion 8.5kW Home Standby (100174) ($2299)
- Highest ratedOutputLpKw: Generac Guardian 26kW (7291) (26 ratedOutputLpKw)
- Highest ratedOutputNgKw: Kohler 26RCAL (24 ratedOutputNgKw)
- Highest transferSwitchAmps: Generac Guardian 26kW (7291) (200 transferSwitchAmps)
- Lowest noiseLevelDbA: Kohler 24RCLA (54 noiseLevelDbA)
Top 3 by quality
An algorithmic overall ranking from the data on this page — value for money, spec strength, and recency. 100% data-driven, no paid placement.
-
Champion 14kW aXis (100837) Quality score 82/100 Best value -
Briggs & Stratton PowerProtect DX 26kW Quality score 80/100 Best value - Briggs & Stratton PowerProtect 26kW Quality score 78/100 Most powerful
How we rank: Value 45% · Spec strength 35% · Recency 20%. Scores are computed only within this category from published specs and prices — never influenced by commissions or placement. Method & open data →
What to look for
How to read the comparison — what each key spec means and the range across these standby generators.
- Rated output lp (kW) — higher is better (this group: 8.5 to 26).
- Rated output ng (kW) — higher is better (this group: 7.5 to 24).
- Transfer switch amps — higher is better (this group: 50 to 200).
Comparison
| Compare | # | Standby Generator | Price | Rated output lp (kW) | Rated output ng (kW) | Fuel type | Cooling type | Transfer switch amps | Engine displacement cc | Source |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  Champion 8.5kW Home Standby (100174) | $2299 | 8.5 | 7.5 | dual-fuel | air-cooled | 50 | 439 | amazon.com | |
| 2 | Champion 14kW aXis (100837) | $4999 | 14 | 12.5 | dual-fuel | air-cooled | 200 | 754 | championpowerequipment.com | |
| 3 |  Cummins QuietConnect RS20A | $5747.5 | 20 | 18 | dual-fuel | air-cooled | — | — | apelectric.com | |
| 4 | Briggs & Stratton PowerProtect DX 26kW | $6833 | 26 | 24 | dual-fuel | air-cooled | — | 993 | energy.briggsandstratton.com | |
| 5 | Briggs & Stratton PowerProtect 26kW | $6970 | 26 | 24 | dual-fuel | air-cooled | — | 993 | energy.briggsandstratton.com | |
| 6 |  Generac Guardian 22kW (7043) | $6999 | 22 | — | dual-fuel | air-cooled | 200 | 999 | generac.com | |
| 7 |  Generac Guardian 24kW (7210) | $7259 | 24 | — | dual-fuel | air-cooled | 200 | 999 | generac.com | |
| 8 |  Generac Guardian 26kW (7291) | $7749 | 26 | — | dual-fuel | air-cooled | 200 | 999 | generac.com | |
| 9 |  Kohler 26RCAL | $8414 | 26 | 24 | dual-fuel | air-cooled | 200 | 999 | kohlerhomeenergy.rehlko.com | |
| 10 |  Kohler 24RCLA | $17900 | 24 | 21 | dual-fuel | liquid-cooled | — | — | kohlerhomeenergy.rehlko.com |
Specs are as published by the manufacturer (or a reputable spec source where the official page was unavailable); prices are US launch MSRP. Full per-product records and all spec columns are in our open dataset.
Popular comparisons
Frequently asked questions
What is the cheapest standby generator?
Champion 8.5kW Home Standby (100174) is the cheapest at $2299 (FactoryPure (authorized Champion dealer, SKU 100174) lists "$ 2,299.00" for this unit (currently out of stock; the model is discontinued and replaced by the 100177). Amazon shows "Currently unavailable" with no price and Norwall's price fields are blank (Discontinued), and Champion publishes no MSRP for this discontinued model, so $2,299.00 is recorded as a typical US retail price.), as of 2026-07-11.
How much does standby generators cost?
Across the 10 standby generators with a published price, the median is $6984.50, ranging from $2299 to $17900, as of 2026-07-11.
Which standby generator is best by the numbers?
Lowest price: Champion 8.5kW Home Standby (100174) ($2299). Highest ratedOutputLpKw: Generac Guardian 26kW (7291) (26 ratedOutputLpKw). Highest ratedOutputNgKw: Kohler 26RCAL (24 ratedOutputNgKw).
How many standby generators are compared here?
10 standby generators across 5 brands, with US price and key specs, current through 2026-07-11.
What is the best overall standby generator?
Champion 14kW aXis (100837) ($4999) — Highest overall score (82/100) — the strongest balance of specs, value and recency in this group.
What is the best value standby generator?
Champion 8.5kW Home Standby (100174) ($2299) — Most specification per dollar of any standby generators here at $2299.
What is the most capable standby generator?
Briggs & Stratton PowerProtect DX 26kW ($6833) — Leads this group on the measured specs — a premium pick at $6833.
More hardware comparisons
How we compiled this
Covers permanently-installed automatic home standby generators (whole-house/backup units that are hard-wired to an automatic transfer switch and run on natural gas or liquid propane). Excludes portable and inverter generators (see portable-generators), portable power stations, and battery backup systems. Price is typical US MSRP for the generator unit in USD; note whether an automatic transfer switch is bundled. ratedOutputLpKw is the manufacturer rated continuous output running on liquid propane, in kilowatts. ratedOutputNgKw is the rated continuous output running on natural gas, in kilowatts. fuelType is an enum: 'dual-fuel' (accepts both natural gas and liquid propane), 'natural-gas', or 'propane'. coolingType is an enum: 'air-cooled' or 'liquid-cooled'. transferSwitchAmps is the current rating in amps of the automatic transfer switch shipped with the unit; null if no switch is included in the base package. engineDisplacementCc is engine displacement in cubic centimeters. thdPercent is total harmonic distortion at rated load in percent (lower is cleaner power). noiseLevelDbA is the manufacturer-published operating sound level in A-weighted decibels, measured at 23 ft (7 m) at normal/exercise load unless otherwise noted. phase is an enum: 'single-phase' or 'three-phase'. enclosureMaterial is an enum describing the housing: 'aluminum', 'steel', or 'composite'. warrantyYears is the limited warranty length in years. weightLbs is unit weight in pounds.
Last verified 2026-07-11. We re-check published specs and prices on a recurring cadence and update this page when they change.
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