HBN CP-C93 Seedling Heat Mat, 10 x 20 in

The HBN CP-C93 seedling heat mat is a 10 x 20-inch pad designed to warm propagation trays for indoor seed starting. It runs at a stated 17.5 W without a thermostat, so it offers straightforward plug-in heating rather than adjustable temperature control.

At a glance

Designed to sit beneath a propagation tray on a flat, dry surface.
The listing claims even warmth, a flexible waterproof exterior and wipe-clean care.
The mat is described as rollable for storage and suitable for indoor gardening and propagation.

Price

£14.44Save 15%

Reference price: ~~£16.99~~

Price checked: 12 Nov 2026

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Pros and cons

Pros

The 10 x 20-inch footprint is intended to fit a standard growing tray.
Direct plug-in operation avoids a separate controller, and customer feedback reports ease of use and helpful warmth for germination.

Cons

There is no adjustable thermostat described, and the mat is stated to remain on while plugged in.

Technical specifications

10 specifications

Identity
Brand	HBN
Model	CP-C93

Heating and electrical
Rated power	17.5W
Rated voltage	230-240V
Claimed heating range	70°F to 85°F (24℃ to 30℃)
Operating behaviour	The Seedling Heat Mat output is on all the time when plugged in directly and it produces a constant 17.5 Watts which is perfect for gently heating the soil root zone for optimum temperature for seed germination.

Size and construction
Mat dimensions	10"x 20"(25*50cm)
Materials and construction	multiple layers of flexible waterproof PVC that encase heat-conducting wire. The outer layer is sealed to protect the internal heating elements.
Package dimensions and weight	25.2 x 23.5 x 3.9 cm; 280 g

Origin
Country of origin	China

What to know before buying

Listing details to confirm

The listed 70°F to 85°F (24℃ to 30℃) is presented as an approximate operating temperature range, while another listing detail says the mat operates constantly at 17.5 Watts. These statements do not confirm a controllable set temperature. The claimed 7-10 degree increase over ambient is also mentioned separately. Monitor growing conditions and plant dryness rather than treating these figures as guaranteed temperatures.

Who is it for?

A good fit for

Seed starters who want a simple heat source beneath one propagation tray.
Indoor gardeners seeking root-zone warmth for seedlings or cuttings.

Less suited to

Buyers who need adjustable temperature control or an automatic shut-off feature.

HBN CP-C93 Seedling Heat Mat, 10 x 20 in · photo 2 — Additional product photo 2

Customer reviews on Amazon

4.6 / 5 · 284 ratings

5 stars75%75%
4 stars15%15%
3 stars6%6%
2 stars2%2%
1 star2%2%

Customer feedback highlights convenient plug-in use, perceived consistent warmth, and reports of faster seed germination, with positive comments about functionality and value. This fits the mat's simple 17.5 W, always-on design, but customer impressions do not establish a controlled root-zone temperature. Buyers needing a setpoint should look for a thermostat-equipped option.

Positive themes

Customer feedback describes easy setup and helpful warmth for germination.
Feedback also speaks positively about functionality, heat regulation and value.

Frequently asked questions

Does the HBN CP-C93 have adjustable temperature control?

No adjustment control is specified. The listing says output is constant while plugged in, so it is not described as a thermostat-controlled mat.

What size growing tray is it intended for?

The mat measures 10"x 20"(25*50cm), which the listing describes as suitable for a standard plastic growing tray.

Can this mat be used with established plants?

The listing discusses warming plant pots as well as seedlings, but advises monitoring plants for dryness. It does not provide specific guidance for individual plant species.