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Briquettes vs kiln-dried logs: which should you burn?

Updated: October 2026

If you already light kiln-dried logs most evenings, switching fuel is not simply a question of which pack claims more heat. The useful comparison is briquettes vs kiln dried logs in your own stove: how readily they catch, how the flame behaves, where you can store them and what one evening costs. Our [wood briquettes comparison](/hub/paints-and-varnishes/wood-briquettes) covers seven briquettes sold on amazon.co.uk; here, the evidence points to a more nuanced answer. Briquettes generally provide more energy per kilogram and use less shelf space, but logs are usually easier to light and give the familiar flame many households want. For plenty of stoves, mixing the two is more practical than making a complete switch.

If you already light kiln-dried logs most evenings, switching fuel is not simply a question of which pack claims more heat.

Our top picks

Homefire Homefire ultra dry heat logs, 24 pack

Best overall

Homefire Homefire ultra dry heat logs, 24 pack
9.1/10about £18.99
View offer
Roastie-Toastie Roastie-Toastie heat logs, 10 kg

Alternative

Roastie-Toastie Roastie-Toastie heat logs, 10 kg
8.3/10about £15.00
View offer
Homefire Homefire recycled wood heatlogs, 12 pack

Best value

Homefire Homefire recycled wood heatlogs, 12 pack
8.8/10about £9.00
View offer
On this page
  1. 1.Heat per kilogram does not predict burn time
  2. 2.Lighting, flame and how long the fire lasts
  3. 3.Space, damp and the real cost of an evening
  4. 4.Which fuel should you burn this week?

Heat per kilogram does not predict burn time

Forest Research gives a typical net calorific value of about 4.1 kWh/kg for air-dry logs at 20% moisture. Within the seven-briquette comparison set, British Woodfuel states 4.50–5 kWh/kg and Roastie-Toastie states 4.8 kWh/kg. Those figures do not tell you how long a particular block will remain visibly alight in your stove. Some of a log's energy is used to drive off its retained water, whereas compressed briquettes are commonly sold at a lower moisture level. A retailer rule of thumb places kiln-dried logs around 12–18% and briquettes around 6–10%, but the figure on the specific bag matters more than a generic range. A product bullet claiming “twice the heat” is not equivalent to the Forest Research figures. A holed heat log may release strong heat quickly rather than extending the evening. A larger solid log can burn more slowly even when its energy per kilogram is lower.

Lighting, flame and how long the fire lasts

Kiln-dried logs normally have the advantage when you start from a cold stove. Split faces and varied sizes make it easier to build a graduated fire, and you can add a small log without immediately loading a large mass of fuel. Briquettes are dense and can be slower to catch; if you reduce the air before they are burning properly, they may smoulder rather than produce clean, useful heat. Logs tend to provide a more natural, lively flame, while a compressed block may expand, split or hold its shape according to its construction. Intensity, duration and total energy are three different measures. A mixed fire can bridge the gap. Establish a hot fire with dry logs, then add a suitable briquette as a compact top-up once the firebox and flue are warm. Do not overload the stove or close the air controls merely to force a longer burn; follow the appliance manual and the fuel maker's directions. For the practical sequence and common mistakes, use our guide to how to burn wood briquettes.
Homefire Homefire ultra dry heat logs, 24 pack

Testsieger

Homefire Homefire ultra dry heat logs, 24 pack
9.1/10about £18.99
View offer

Space, damp and the real cost of an evening

Briquettes win clearly where storage volume is limited. Compression produces regular, stackable packs with more fuel in a given cupboard footprint than loose logs. The trade-off is sensitivity to damp: HETAS advises that briquettes need indoor storage because they can absorb moisture and swell. Logs need a ventilated store protected from rain, but a covered outdoor log store avoids using living-space cupboards. For packs in the seven-product amazon.co.uk set where weight was unambiguous, displayed prices worked out at roughly £0.95–£1.50 per kilogram when researched. It would be misleading to convert every pack into pence per kWh when most listings do not state a product-specific calorific value.

Which fuel should you burn this week?

Stay with kiln-dried logs if you light from cold most days or value a lively flame. Look for properly dry fuel and, in England, the relevant Ready to Burn marking where the domestic solid-fuel rules apply. Choose briquettes when cupboard space is the binding constraint and you can keep every pack completely dry indoors. Our wood briquettes buying guide explains heat logs, Pini Kay-style blocks and longer-burning products. For many households, the practical answer is both: logs to establish the flame, followed by a briquette as a dry, dense top-up. If your priority is retained embers, see the guide to overnight briquettes. Products Compared may earn a commission from a qualifying purchase at no extra cost to you.

Common questions

Which has more heat per kilogram?
Briquettes generally have the advantage because they are dense and dry. Forest Research lists air-dry logs at about 4.1 kWh/kg at 20% moisture, while two briquettes in our amazon.co.uk set state 4.50–5 kWh/kg and 4.8 kWh/kg. Compare figures on the same net or gross basis where possible.
Do wood briquettes burn longer than kiln-dried logs?
Not necessarily. Total energy per kilogram does not determine burn time: block size, holes, stove temperature and airflow alter how quickly that energy is released. Some holed heat logs can burn hotter and faster than a substantial hardwood log, so avoid assuming that a higher calorific value guarantees a longer evening.
Which fuel is easier to light?
Kiln-dried logs are generally easier to light from cold because you can combine smaller split pieces with gradually larger ones. Dense briquettes often perform better once the firebox is already hot. If a briquette struggles, verify that it is dry and that the stove has adequate airflow before changing the fuel load.
Can I mix briquettes and logs?
Often, yes, if your stove manual allows both fuels. A practical approach is to establish a clean, hot fire with dry logs and add one briquette later as a compact top-up. Stay within the appliance's maximum load and do not shut the air supply to make the mixed load last longer.
Are briquettes cheaper per evening on amazon.co.uk?
They can be, but price per kilogram alone cannot settle it. Researched packs with clear weights were roughly £0.95–£1.50/kg, while prices fluctuate and several listings lacked a stated kWh/kg. Record how much of each fuel your stove uses over a comparable evening to find the meaningful household cost.

Related pages

Best wood briquettes

Wood briquettes

Wood briquettes buying guide for your UK log burner

How to burn wood briquettes in a log burner safely

Night briquettes for a log burner, embers by morning

Sources

Public UK sources for the moisture rule, smoke control, calorific values and sweeping advice. Prices, stars and review counts are the saved amazon.co.uk lines for the seven listings. Seller burn times are not measured results.

  1. Air Quality (Domestic Solid Fuels Standards) (England) Regulations 2020 (retrieved 17 October 2026)
  2. Selling wood for domestic use in England (retrieved 17 October 2026)
  3. Ready to Burn — consumers (retrieved 17 October 2026)
  4. Smoke control areas: the rules (retrieved 17 October 2026)
  5. HETAS — wood, coal and smokeless fuel (retrieved 17 October 2026)
  6. Forest Research — typical calorific values (retrieved 17 October 2026)
  7. ISO 17225-3:2021 — graded wood briquettes (retrieved 17 October 2026)
  8. Defra Burn Better (retrieved 17 October 2026)