Every RV range and cooktop gets a score from 0 to 100% built from five factors, which maps onto the 5-point rating shown on the site (a 0% score would be 1.5 stars; a perfect score, 5). Each factor is scored against fixed reference points, not against the other products in the list, so adding a new model never moves another model’s rating. Ranges and cooktops are ranked in separate groups. A cooktop has no oven, so the oven weight is shared out over its other four factors in proportion.
| Factor | Measures | Weight |
|---|---|---|
| Cooking power | total cooktop BTU/hr and the strongest burner | 30% |
| Oven capacity | oven size in cu ft (ranges only; cooktops share its weight out) | 20% |
| Safety | flame failure gas shutoff and ignition type | 20% |
| Value | price per 1,000 BTU/hr of cooktop output, judged within the tier | 20% |
| Warranty | warranty length | 10% |
Where the numbers come from
Burner and oven ratings, oven capacity, ignition, safety features, cutout sizes and warranty come from the maker’s product page or manual, or from the maker’s own copy on a retail listing. Where a maker’s figures conflict, the per-burner ratings are used. Prices are checked at Amazon and the maker’s own store, and the lowest price at a store the page links to is used.
The factors
Cooking power is 70% the total cooktop output and 30% the strongest single burner. A 10,000 BTU/hr cooktop scores zero and 24,000 BTU/hr full marks; a 5,000 BTU/hr strongest burner scores zero and 9,500 BTU/hr full marks. The oven burner isn’t counted here.
Oven capacity is the oven’s size: 1.0 cu ft scores zero and 3.5 cu ft full marks. A capacity published in liters is converted to cu ft. Where a maker gives only the interior dimensions, the capacity is worked out from them and marked estimated.
Safety is 60% a flame failure shutoff and 40% the ignition type. A flame failure device counts only when the maker says a thermocouple, flame sensor or flame failure device shuts off the gas; a plain “safety valve” doesn’t count. For ignition, electronic spark (battery, 12 V or 120 V) scores full marks, piezo 60% and match lighting zero.
Value is the current price divided by the cooktop output, in dollars per 1,000 BTU/hr, on a log scale, so halving the price always counts the same. Ranges cost more for the same burners because they include an oven, so each group has its own scale: for ranges $45 scores zero and $15 full marks, and for cooktops $25 scores zero and $6 full marks.
Warranty is the maker’s warranty: no warranty scores zero and 3 years full marks.
What isn’t scored
Oven burner output, oven temperature range, air-fryer modes, glass covers, 12 V draw, cutout and overall dimensions, weight, certification and release date are listed but not scored. A dual fuel range’s electric oven is scored on its size like any other oven.
Missing data
If a figure isn’t published, that factor gets the neutral middle score (50) and the product page marks it as estimated. When a maker publishes the ignition but not whether there is a flame failure device (or the other way round), the missing half scores neutral and the factor is marked estimated. The exception is warranty: a maker that doesn’t publish one gets no warranty counted, so that factor scores zero and is marked estimated.
Ties and discontinued models
Products are ranked by score within each group. Discontinued models stay listed but rank below every current model and can be hidden with the “Hide discontinued” filter.