Duxtop 9820HLBI Mixed Induction and Infrared Cooktop review

A two-zone Duxtop that pairs one induction burner on the left with an infrared radiant element on the right. Its matched manual confirms countertop and built-in plans, but the two zones share an 1,800 W ceiling and each has different cookware rules.

Why choose a mixed-surface cooktop?

The 9820HLBI is not a pair of identical induction burners. Its exact-model manual identifies the left zone as induction and the right as an infrared hot plate. The split helps if one pan is not magnetic, because the radiant side can accept suitable nonmagnetic cookware while the left remains an induction zone. It is not a pair of interchangeable burners: a second induction-compatible pot must go on the left.

The exact page identifies 9820HLBI and lists built-in/countertop use and 1,800 W. The Secura-authored manual cover identifies both HL-K35 and 9820HLBI, so this review can use its model-specific installation and operating instructions. Manual copyright is 2022–2024; whether every present-day sale includes this exact edition is unverified.

Each side heats cookware differently

The left induction zone has 20 power levels from 0.5 to 10, with listed output from 100 to 1,800 W, and 20 separate temperature settings from 100°F to 460°F. Its cookware must have a flat ferrous magnetic base at least five inches in diameter; cast iron, magnetic steel and suitable magnetic-bottom stainless are examples. Glass, ceramic, copper, aluminum and nonmagnetic stainless are not compatible on this side.

The infrared side accepts cookware without a magnetic base. The manual describes 16 power levels, and the exact product page says the zone accepts common cookware up to 8.7 inches. The manual still recommends a flat bottom at least as large as the heating element for even contact. The radiant surface itself stays hot after switch-off; do not treat its dark glass as cool just because the control is off. The manual’s “HOT” warning appears when the surface remains above 140°F, and it says to allow cooling before cleaning.

The left temperature setting is a cooktop control mode, not an internal-food thermometer. A probe is not identified in the page or the manual’s parts diagram, so this is not a model to select for verified probe-based cooking. The manual describes a 180-minute timer for either side and a separate two-hour automatic shutoff when no timer is set. The left panel has a MAX control; the infrared side has MAX and MID shortcuts, not a dedicated Keep Warm mode.

Power sharing changes a two-pan routine

Although each zone has a solo maximum, the manual caps their combined output at 1,800 W when both are active. The induction side reaches 1,800 W alone and the infrared side 1,600 W alone, but those numbers cannot both be used at once. Power sharing is asymmetric: if the right infrared side is set at level 5.5 (1,100 W) or above, the left induction side will not work. The documented power table explains the shared allocation at lower settings. Plan on one stronger task paired with a lower one, rather than two independent high-power burners.

The manual calls for a dedicated 120 V outlet with capacity higher than 15 A and says the cooktop must not share its outlet or circuit with another electrical appliance. Do not assume an RV or dorm outlet meets those requirements; check the actual supply and installation instructions.

Built-in flexibility is real but needs a qualified fit

Unlike the countertop-only Duxtop 9620LS/BT-350DZ, this model’s exact manual gives built-in instructions, and its cover calls it a built-in double induction and infrared cooktop. It shows a 580 × 315 mm cabinet cutout and a 600 × 340 mm top outline, asks for 55 mm of side clearance, recommends a cabinet panel at least 30 mm thick, and says not to put a drawer directly below because the installation needs open space. It calls for a qualified installer, four sealing strips, heat-resistant nearby cabinetry and a 30-inch minimum above an unprotected cabinet. The manual still describes 120 V plug-in household use; this is not a hardwired 208/240 V hob.

For countertop use, place it on a dry, level, noncombustible, nonmetallic surface and leave four inches around cooling-air openings. Listed dimensions are 23.6 × 13.4 × 3.0 inches, weight 14 lb and cord length five feet. Use the metric cutout drawing and qualified-installer guidance rather than scaling the product image.

Who should buy the 9820HLBI?

Consider it when you need two zones, want an infrared surface for nonmagnetic cookware, and can live with the shared 1,800 W ceiling. The built-in option helps where the documented 120 V cutout fits. Avoid it if every zone must use induction, if both zones need their separate peak outputs simultaneously, if your induction pan has a base under five inches, or if you require a confirmed food probe or a long unattended timer.

For two induction zones in a built-in layout, compare the 8620BI/BT-K35, whose exact manual also documents a 1,800 W combined cap and a 586 × 325 mm cutout. For countertop-only two-zone induction with a 10-hour set timer, see the 9620LS/BT-350DZ. The 9720LCBI page advertises two induction zones and an LCD interface, but its available manual cover has a different model suffix, so its installation details remain unconfirmed.

The exact 9820HLBI manual states household use only and a two-year limited warranty for the original purchaser; it excludes commercial or institutional use. Its manual lists four sealing strips for installation, but does not establish every current seller’s complete box inventory. Confirm the matching model number and what is included with the seller before ordering.

This assessment uses the exact Secura 9820HLBI product page, its page-linked image and the Secura-authored HL-K35/9820HLBI manual. It does not claim personal use, lab measurements, current stock or that any particular seller’s box contains every item shown in the manual or image.