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Dimplex ML Convector Heater 3kW ML3TSTie7 review

No. 10 of 10 in our convector heaters ranking · Updated · How we rank

Our verdict: The Dimplex ML Convector Heater 3kW ML3TSTie7 ranks 10th of the 10 convector heaters we compare, with 7.3 out of 10.

Dimplex ML Convector Heater 3kW ML3TSTie7

7.3/10

The Dimplex ML3TSTie7 is a 3kW electric convector with a 7-day timer and electronic thermostat. It suits a large living room, conservatory or hall where a 2kW heater falls short.

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Why it's here

  • 3kW output for bigger rooms
  • 7-day timer with four schedules a day and adaptive start
  • Electronic thermostat set to within 1°C
  • Freestanding or wall-mounted, with a tilt switch and overheat protection

Keep in mind

  • Uses 3kW at full output, so it is the costliest to run here
  • Programming the timer takes a read of the manual
  • Mixed owner scores on build and control feel

Why the Dimplex ML3TSTie7 scores 7.3

Each bar shows where it places among the 10 convector heaters in this guide, so a full bar is 1st of 10. How happy owners are counts for most of the score.

  • How happy owners are10th of 10
  • How many rated it8th of 10
  • How new it is3rd of 10

Why it sits behind the Igenix IG5250 Portable Convector Heater with Timer 2000W

The Igenix IG5250 Portable Convector Heater with Timer 2000W (7.4) beats the Dimplex ML Convector Heater 3kW ML3TSTie7 (7.3) because it leaves owners a little happier. The Dimplex ML Convector Heater 3kW ML3TSTie7 is the newer design, but not by enough to close the gap.

About the Dimplex ML3TSTie7

The ML3TSTie7 is a white and light grey convector rated at 3,000W on a 230-240V supply. A rotary dial on the side selects off, 2kW or 3kW. The grille is at the top and a neon indicator shows when it is on. It is a plain convector with no fan, so it warms a room by circulating air gradually.

Control comes from an electronic thermostat that Dimplex says holds the temperature to within 1°C, plus a frost protection setting. The digital timer runs 7 days with up to four heating schedules a day. Adaptive start works out how early to switch on so the room reaches the set temperature at the programmed time.

It stands on feet or mounts on a wall, and wall brackets are included. Carry handles are built in. The unit is 443mm high, about 707mm wide and 233mm deep with the feet fitted, and weighs 4.4kg. The 1.5m cable has a 13A plug and leaves from the underside. Safety features are a tilt switch that cuts power if it is knocked over and an overheat cut-out.

What owners report about the Dimplex ML3TSTie7

We found little owner feedback for this exact model, and most of it is short. What there is leans positive.

Owners who bought it for a large sitting room say it heats the space well and runs quietly. One liked that everything is run from a single control knob. Another fitted it in a public warm space and was happy with it. We found no pattern of faults after months of use, and no owner threads that go into the timer in detail.

Who the Dimplex ML3TSTie7 suits

Buy it for a big living room, open-plan area, conservatory or hall where 2kW is not enough, and where a timer and steady thermostat save you adjusting it by hand. The wall-mounting option helps if floor space is tight. At 3kW it draws the most power of the convectors here, so run it on 2kW or let the thermostat do the work in a smaller room.

Look elsewhere for a small bedroom or office: the Dimplex HeatLite Convector Heater 2kW DXCV2001 is lighter and cheaper to run. If you want a timer on a 2kW unit, the EMtronics 2000W Portable Convector Heater with Timer is one option. Expect to read the manual before programming the timer.

Questions about the Dimplex ML3TSTie7

Does the Dimplex ML3TSTie7 have a timer?

Yes. It has a 7-day timer with up to four heating schedules a day and adaptive start, which begins heating early so the room is warm at the set time.

Can the Dimplex ML3TSTie7 be wall mounted?

Yes. It can stand on its feet or be fixed to a wall, and wall brackets are included.

How big and heavy is the Dimplex ML3TSTie7?

It is 443mm high, about 707mm wide and 233mm deep with the feet on, and weighs 4.4kg. It has carry handles.

What heat settings does the Dimplex ML3TSTie7 have?

Off, 2kW and 3kW, chosen with the rotary dial. The electronic thermostat then holds the temperature to within 1°C, and there is a frost protection setting.

What warranty does the Dimplex ML3TSTie7 come with?

Dimplex lists 1 year, with a 3 year extended warranty available when you register the product.

Does the Dimplex ML3TSTie7 switch off if knocked over?

Yes. It has a tilt switch that cuts the power if it is knocked over, plus an overheat cut-out.

Other convector heater picks

The other badge winners in our convector heaters ranking.

All 10 convector heaters, compared

  1. 1 Daewoo 2kW Convector Heater with Thermostat HEA1146GEBest Choice 8.0 Check Price
  2. 2 EMtronics 2000W Portable Convector Heater with Timer 8.0 Check Price
  3. 3 De'Longhi Slimline Convector Heater 2kW HSX2320Best Premium 8.0 Check Price
  4. 4 BLACK+DECKER 2.2kW Portable Convector Heater BXCV41001GB 8.0 Check Price
  5. 5 Beldray Portable Convector Heater EH3334 7.8 Check Price
  6. 6 Devola 2000W Convector Heater DVCH2BL 7.7 Check Price
  7. 7 Dimplex HeatLite Convector Heater 2kW DXCV2001 7.5 Check Price
  8. 8 Daewoo 2000W Convector Heater with 3 Heat Settings & Timer HEA1137GE 7.4 Check Price
  9. 9 Igenix IG5250 Portable Convector Heater with Timer 2000W 7.4 Check Price
  10. 10 Dimplex ML Convector Heater 3kW ML3TSTie7This review 7.3 Check Price
See the full convector heaters ranking

The Dimplex ML3TSTie7 on Amazon

Dimplex ML Convector Heater 3kW ML3TSTie7

The Dimplex ML3TSTie7 is a 3kW electric convector with a 7-day timer and electronic thermostat. 7.3 out of 10.

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How we score it

Every score here comes from our ranking model; no editor sets the order. Too few review sites cover convector heaters for their verdicts to lead, so this ranking is led by owners. It ranks products by how happy owners are, holding back any product few owners have rated until more agree. How many rated it and how new it is only settle close calls, and value for money earns its own badge rather than a higher place. We compared 19 models for this guide before settling on these ten.

Brands can't pay to be included or to move up. We last checked these picks in October 2026.

How we rank, in full

Where these facts come from