---
title: "Rayburn vs Aga: Which Is Better for a Devon Farmhouse?"
canonical: "https://tavistockplumber.co.uk/blog/rayburn-vs-aga-devon-farmhouse/"
pubDate: 2026-07-19
author: James Bron
description: "The Rayburn vs Aga debate is a staple of Devon farmhouse renovations. Both are iconic, both heat a room and cook at the same time — but they differ in ways that matter depending on how your kitchen is used and what fuel is available."
tags: [rayburn, aga, devon, farmhouse, oil boiler, heating, range cooker]
categories: [Heating Advice]
---

Devon farmhouses and a Rayburn or Aga go together naturally. Both manufacturers have been putting cast-iron range cookers into the hearts of rural British kitchens for over a century. If you are buying or renovating a Devon property with one already installed, or choosing between the two, here is a practical comparison that goes beyond the brand mythology.

This guide is a companion to our [Rayburn guide for Devon homeowners](/blog/what-is-a-rayburn-devon-heating/).

## The Core Difference: Cooking Focus vs Heating Focus

Both are cast-iron range cookers that burn oil, gas, or solid fuel (or run on electricity in newer models). The fundamental difference is emphasis:

**Aga** is primarily a cooking range. Its radiant heat ovens — the roasting oven, baking oven, simmering oven, and warming oven on a four-oven model — are the defining feature. Heating output to the central heating system is possible on boiler models but is not the primary design purpose.

**Rayburn** is designed with more equal weight between cooking and central heating. The Rayburn 600 and 900 series — the most common models in Devon rural properties — are specified with central heating outputs of 18–43 kW depending on model, versus the Aga's more modest heating contribution.

If your Devon property depends on the range for meaningful space and water heating, the Rayburn's higher heat output makes it the more logical choice.

## Fuel Options and Devon Availability

| Fuel type | Aga availability | Rayburn availability | Devon context |
|---|---|---|---|
| Oil | Yes (AIMS oil burner) | Yes | Widely used in rural West Devon |
| Gas (mains) | Yes | Yes | Limited outside town centres |
| LPG (bottled) | Yes | Yes | Used in rural properties off mains gas |
| Solid fuel (wood/coal) | Limited (older models) | Yes (Rayburn Heatmaster) | Less common but available |
| Electric | Yes (newer models) | Yes (newer models) | Higher running cost |

For most Devon farmhouses around Tavistock, Okehampton, and Launceston — where mains gas is unavailable — oil or LPG are the practical fuel options. Both Aga and Rayburn oil models are widely installed and well-supported in Devon, with OFTEC-registered engineers familiar with both brands.

## Cooking Performance

**Aga.** The Aga's radiant oven heat is genuinely distinctive. The roasting oven maintains a consistent high temperature (around 240°C) without thermostat cycling. Results from slow roasting, bread baking, and casseroles are superior to conventional ovens for many cooks. The learning curve is steep — the Aga does not have temperature dials in the traditional sense — but Aga cooking has a devoted following. The four-oven model in particular, with dedicated roasting, baking, simmering, and warming functions, is the choice for serious Devon farmhouse cooking.

**Rayburn.** The Rayburn's oven is thermostat-controlled and operates more like a conventional oven. Temperature control is more predictable for cooks used to gas or electric ovens. The Rayburn is often the more practical choice where cooking is functional rather than intensive, or where different household members want to use the range without learning the Aga's distinctive rhythm.

## Running Costs in Devon (Oil Models)

Running costs for oil-fired range cookers depend on the oil price, usage pattern, and local climate. Devon rural properties using an Aga or Rayburn as the sole heat source will have higher oil consumption than urban properties with gas central heating.

**Aga oil consumption (traditional always-on model):** 1,500–2,500 litres of oil per year, depending on model size and whether it is the primary heating source.

**Rayburn oil consumption:** 1,200–2,200 litres per year for a model also running central heating, varying significantly with property size and insulation.

At £0.90–£1.00 per litre for domestic heating oil (Devon, 2026), annual fuel costs for a Devon farmhouse using either as the primary system run from £1,100 to £2,500. Newer controllable models — the Aga Dual Control and Rayburn Heatmaster — allow the appliance to be turned down or off overnight, reducing oil consumption by 15–25% compared to traditional always-on models.

## Maintenance Differences

Both Aga and Rayburn require annual OFTEC servicing by a qualified engineer. The service visit covers burner inspection, combustion analysis, flue check, and controls test.

**Aga-specific maintenance:** The Aga's cast-iron structure can develop hotplate and oven lid seal degradation with age. Original enamelled tops can chip. Aga factory-trained service engineers are available in Devon, though coverage in the rural fringe around Tavistock and Okehampton requires advance booking.

**Rayburn-specific maintenance:** Rayburn's heat exchanger configuration means that soot and combustion residue accumulate in specific locations the engineer must clean as part of the annual service. Rayburn 200-series models (1970s–1990s) are reaching the age where parts availability is declining.

## Which Should You Choose?

| Situation | Recommendation |
|---|---|
| Cooking is a priority; central heating secondary | Aga (four-oven oil model) |
| Heating output is important; cooking is practical | Rayburn 600 or 900 oil series |
| Converting from a non-range boiler for the first time | Rayburn (lower learning curve) |
| Traditional farmhouse character, cooking intensive | Aga |
| Outbuilding or extension needs the range as sole heat source | Rayburn (higher kW output) |

## Frequently Asked Questions

**How much does a new Aga cost in Devon?**
A new four-oven oil-fired Aga runs from approximately £9,000–£14,000 supplied and installed. The Aga AIMS oil burner conversion on an existing classic Aga is approximately £2,500–£3,500.

**How much does a new Rayburn cost in Devon?**
A new Rayburn 600K oil combination cooker (with central heating) is approximately £4,000–£6,000 supplied and installed, depending on flue requirements and oil line work.

**Can an Aga or Rayburn run radiators?**
The Rayburn 600 series and above can run a full central heating circuit with radiators. The Aga's boiler models have lower heat output and are usually supplemented by a conventional boiler for larger properties.

**Do I need an OFTEC engineer for an Aga or Rayburn service?**
Yes. Both are oil-fired appliances. Annual servicing must be carried out by an OFTEC-registered engineer. Our [Rayburn and Aga service](/services/rayburn-aga-service/) team covers both models across the Devon and East Cornwall service area.

**What is the difference between a Rayburn and a standard boiler?**
A Rayburn combines a cooker and a boiler in one cast-iron unit. A standard oil boiler heats your water and radiators but does not cook. The Rayburn's advantage is the dual function and the kitchen warmth it provides. Its disadvantage is that if it breaks down, you lose both heating and cooking simultaneously — which is why many Devon farmhouses run a Rayburn as the primary heat source with a backup electric oven in the kitchen.