DEFRA Ecodesign Rules — Complete UK 2026 Guide
The technical reference for the UK's Ecodesign Regulations for solid-fuel space-heating appliances. What they cover, what they don't, and what's likely next after the March 2026 consultation.
One-paragraph summary
Ecodesign rules took effect on 1 January 2022. They apply to wood-burning, multi-fuel, and boiler stoves placed on the UK market from that date — not to existing stoves. From 1 January 2025, it became illegal to sell or install non-Ecodesign stoves new in England and Wales. Existing installed stoves remain fully legal to use indefinitely. See the "are wood burners banned" explainer →
Ecodesign emissions thresholds
These are the maximum emission limits every new UK stove must meet from January 2022. Tested under set laboratory conditions and verified through the UKCA or CE marking framework.
| Pollutant | Limit | Context |
|---|---|---|
| Particulate matter (PM) | 40 mg/m³ | 55% lower than the pre-2022 Defra Exempt limit |
| Carbon monoxide (CO) | 120 mg/m³ | 88% lower than the pre-2022 limit |
| Organic gaseous compounds (OGC) | 40 mg/m³ | Newly mandated under Ecodesign |
| Nitrogen oxides (NOx) | 1,500 mg/m³ | First time NOx was measured for stoves |
| Seasonal efficiency (closed stoves) | ≥ 75% | Open fires must achieve ≥ 40% |
Who and what is regulated
- Manufacturers and importers placing new solid-fuel space-heating appliances on the UK market — the Ecodesign Enforcement Team within the National Measurement Office verifies compliance
- Retailers selling new appliances — must only stock Ecodesign-compliant models from January 2022 (with a short grandfather period for pre-2022 stock)
- HETAS-registered installers fitting new appliances — professionally obligated not to install non-compliant new stoves
- Not regulated: existing installed stoves; the second-hand market (pre-2022 stoves can be resold and reinstalled with proof of manufacture date); outdoor barbecues, chimineas, fireplaces, and pizza ovens
Ecodesign vs DEFRA Exempt vs clearSkies — the labels
Three different certification labels operate in parallel. They address different things:
| Label | Type | SCA use |
|---|---|---|
| Ecodesign Ready (SIA) | Mandatory legal baseline (2022+) | Not sufficient — DEFRA Exempt required separately |
| DEFRA Exempt | Government approval (gov.uk listed) | ✅ Required to burn wood in an SCA |
| clearSkies Level 2 | Voluntary (industry-led) | Wood stove meeting Ecodesign — not auto DEFRA Exempt |
| clearSkies Level 3 | Voluntary (independently verified) | ✅ Ecodesign + verified DEFRA Exempt |
| clearSkies Level 4 / 5 | Voluntary (independently verified) | ✅ Level 3 + higher efficiency tiers |
Strongest single consumer signal in 2026: clearSkies Level 3 or higher. Independently certifies both Ecodesign compliance and DEFRA Smoke Control Area exemption. Charnwood holds the broadest UK Level 5 portfolio. Charnwood guide →
Pre-2022 stoves and the second-hand market
HETAS confirms: "If the stove can be evidenced as being manufactured and placed on the market before 1 January 2022, then it legally can be sold in conformity with the Ecodesign regulations and installed in the UK." Practical implications:
- Keep the original purchase invoice — it's the proof of pre-2022 manufacture
- A HETAS-registered installer can legally install a second-hand pre-2022 stove (most will, some may decline at their discretion)
- If you're in a Smoke Control Area, the stove still needs to be DEFRA-exempt to burn wood — Ecodesign status alone isn't enough
- Building Regulations Part J compliance for the install is required regardless of stove age — minimum gross efficiency of 65% applies
The 2026 DEFRA consultation
DEFRA published a formal consultation on reducing solid-fuel burning emissions in January 2026. It closed on 19 March 2026; responses are under review. The three main proposals — all applying to new appliances only:
- New 1g/hour emissions limit for stoves (vs current 5g/h SCA exempt limit). Around 70% of post-2018 tested appliances already meet this. If adopted, a 3–5 year grace period would apply.
- Mandatory A–C labelling at point of sale for new stoves, with a health warning statement. Enforced by Trading Standards.
- Periodic retesting of certified appliances (currently tested only at initial market placement).
Existing stoves are not affected by any of these proposals. Installed appliances continue under the rules in force at the time of installation.
Looking ahead: 2030 and beyond
The Climate Change Committee has recommended eliminating new wood-burning stove installations by 2030 and urban wood-burning by 2050. These are advisory recommendations, not policy. DEFRA has not adopted them.
The direction of travel is toward tighter emissions limits for new stoves and stronger enforcement of SCA rules. UK domestic combustion PM emissions already fell 7.4% in 2024 — a signal that the post-2022 Ecodesign generation is delivering measurable improvements.
Frequently asked questions
What is DEFRA Ecodesign for wood-burning stoves?
Ecodesign is a UK manufacturing standard that took effect on 1 January 2022, setting emissions limits and a 75% efficiency floor for any new solid-fuel stove placed on the UK market. It applies to manufacturing, not use — existing stoves remain fully legal to use indefinitely.
What are the exact Ecodesign emissions limits?
Particulate matter (PM): max 40 mg/m³. Carbon monoxide (CO): max 120 mg/m³ (88% lower than the previous Defra Exempt limit). Organic gaseous compounds (OGC): max 40 mg/m³. Nitrogen oxides (NOx): max 1,500 mg/m³. Plus a minimum seasonal efficiency of 75% for closed stoves.
Is "Ecodesign Ready" the same as "DEFRA Exempt"?
No — they certify different things. Ecodesign Ready is an industry-administered confirmation that the stove meets the 2022 Ecodesign emissions and efficiency thresholds. DEFRA Exempt is a separate UK government approval needed to burn wood in a Smoke Control Area. A stove can be Ecodesign Ready without being DEFRA Exempt. clearSkies Level 3+ certifies both simultaneously.
What's the clearSkies certification scheme?
clearSkies is a voluntary industry-led mark (Levels 1–5) administered by an independent not-for-profit. Level 2 = minimum Ecodesign compliance. Level 3 = Ecodesign + verified DEFRA Exempt. Levels 4–5 = higher efficiency tiers above the legal minimum. It's the strongest single consumer signal in 2026.
Can I buy a second-hand pre-2022 stove?
Yes — pre-2022 stoves can legally be sold second-hand and installed in the UK. HETAS confirms: "If the stove can be evidenced as being manufactured and placed on the market before 1 January 2022, it can legally be sold in conformity with the Ecodesign regulations and installed." Keep the original purchase invoice as proof of pre-2022 manufacture.
What about the proposed 2026 1g/hour emissions limit?
DEFRA's January 2026 consultation (closed 19 March 2026) proposed reducing the smoke emissions limit from 5g/hour (current SCA standard) to 1g/hour for new stoves. Around 70% of post-2018 stoves already meet this. A 3–5 year grace period would apply if adopted. Existing stoves would not be affected.
Will Ecodesign rules get tighter?
Almost certainly yes for new appliances. DEFRA's direction of travel is toward tighter limits for new stoves and stronger enforcement of SCA rules. But repeatedly confirmed: no ban on existing stoves is planned. Manufacturers are pushing efficiency above 85% in anticipation of future Ecodesign Stage 2 requirements.