People using a conservatory with cold walls
If you sit or work in the room, cold surfaces and draughts may still affect comfort while the heater runs. Check the room's heat loss as well as its floor area when assessing a heater's stated coverage.
Who this advice is for
People using the room at set times
If you enter the conservatory on a regular schedule, a thermostat and timer let you plan heating around those periods. Check that the available schedule matches when you use the room.
People needing occasional, movable heat
A portable convector may suit short periods of supplementary heating where the space is reasonably insulated. Dimplex describes its ML2T as suitable for well-insulated spaces or occasional use; a movable heater still needs safe clearance and an appropriate socket.
What matters when buying
Assess heat loss and stated coverage before choosing controls or a mounting position. Then decide which feature matters most for the way you use the conservatory.
| Concern | What to check | Who this matters to |
|---|---|---|
| Heat loss and capacity | Note the glazing, insulation, draughts and ceiling height; compare a heating-load calculation with the model's stated coverage. | If cold walls and glazing make the room hard to warm, I need to know whether the heater can meet that demand. Around 36% of consumers would put heat loss and capacity first. |
| Temperature control and scheduling | Check the thermostat and whether daily or weekly timer settings fit your routine. | When I use the conservatory at predictable times, I want it warmed before I enter rather than switching the heater on at the door. Around 29% of consumers would prioritise controlled, scheduled heating. |
| Safe placement | Check plug compatibility, socket access and the manufacturer's clearances; keep air inlets and outlets unobstructed. | With furniture or curtains near the heating position, I need a place where the appliance can stand or be mounted safely. Roughly 21% of consumers would make placement their primary concern. |
| Portability for occasional use | Check the format, heat settings and any manufacturer restriction to occasional use or well-insulated spaces. | If I only use the room briefly, I would rather move a heater into place when needed than give it a permanent position. About 14% of consumers would put that flexibility first. |
Mistakes to avoid
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Choosing by advertised room area alone
A conservatory with cold walls, substantial glazing or draughts can lose more heat than another room of the same size. A manufacturer's area figure is a starting point, not a room-specific heat-loss assessment.
Inspect seals, glazing, wall construction and ceiling height, then use a room-heating calculation when judging the output you need.
If heat loss remains high, the heater may run for longer without providing the comfort you expected.
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Sealing designed ventilation along with draughts
Energy Saving Trust explains that draught-proofing reduces heat loss, but ventilation remains important for air quality and moisture control.
Seal unintended gaps around doors and windows without blocking vents, chimneys or other required airflow.
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Obstructing the heater
A convector needs clear air inlets and outlets. Dimplex's instructions warn against covering or obstructing them.
Follow the exact model's clearance instructions, keeping curtains and furniture away and positioning a freestanding heater where it is unlikely to be knocked over.
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Assuming an IP rating permits any location
An IP rating describes specified ingress protection for a particular product; it does not override that heater's location restrictions. Dimplex's convector instructions prohibit use in the immediate surroundings of a bath, shower or swimming pool.
Check the exact manual for permitted placement, socket position, mounting requirements and clearances rather than treating IP24 or a safety cut-out as blanket permission.
Relevant brands and models
Dimplex
Dimplex lists basic portable, programmable and smart convectors; the relevant features differ by model.
- Its ML2T is a 2 kW manual convector, while the 3 kW ML3TSTie7 has an electronic thermostat and 7-day timer.
- Dimplex describes the ML2T as suitable for well-insulated spaces or occasional use. Do not treat its output as proof that it will overcome substantial conservatory heat loss.
Russell Hobbs
The RHCVH4002B is a freestanding convector for buyers considering straightforward settings and timed use.
- Russell Hobbs specifies 0.75, 1.25 and 2 kW settings, a thermostat, timer, frost protection and overheat and tip-over protection for this model.
- Its stated coverage of up to 20 m² is manufacturer guidance, not confirmation that a cold-walled conservatory of that size will be warm enough.
Devola
The DVS2000W is a panel/convector-style option for buyers considering a fixed position and scheduled heating.
- Devola lists wall or floor placement, a thermostat, weekly timer and IP24 rating for the DVS2000W.
- Check the DVS2000W's own mounting and location instructions; its IP24 rating does not make every position suitable.
Joybuy products
Related products coming soon.
Common questions
Will a 2 kW convector heat a cold-walled conservatory?
It might, but output and floor area alone cannot establish whether it will be sufficient. Dimplex and Russell Hobbs each state coverage of up to 20 m² for particular 2 kW models; assess the conservatory's glazing, cold walls, draughts and ceiling height before relying on either figure.
Is a timer and electronic thermostat worth choosing?
They are useful if you use the conservatory at regular times and want to schedule heating before you enter. Dimplex specifies a 7-day timer and adaptive start for its ML3TSTie7, but those controls will not reduce heat loss through the room.
Can I use an extension lead with a convector heater?
Use an accessible wall socket where possible and follow the heater's instructions. Electrical Safety First warns against overloading extension leads, says cable reels must be fully unwound to achieve their rating, and advises against connecting extension leads together. For a portable heater in the UK, it also advises checking for a UK 3-pin plug.