To replace a fridge without altering your kitchen units, first check the housing dimensions, door-fixing system and ventilation requirements of the new appliance. If you already have a separate freezer, a built-in fridge without a freezer compartment can give you more space for fresh food. If the freezer needs to stay in the housing, compare the capacity of each compartment in compatible fridge-freezers. Then look at their annual energy consumption and noise levels.
If you’re keeping the housing and its door panel, start by checking the housing dimensions, airflow and connection between the two doors. These factors determine which appliances can be fitted into your existing unit.
A built-in fridge without a freezer compartment can use the housing entirely for fresh food. However, check its dimensions and door-fixing system before comparing capacities.
A built-in fridge-freezer combines both compartments in one housing. Compare their capacities separately, then check the noise level, annual energy consumption and maintenance requirements of models that fit your kitchen.
First rule out appliances that won’t fit the housing and its door panel. Features that affect day-to-day use are only useful for comparing models that can actually be installed.
Worth considering: if you already have a separate freezer and want to use the housing entirely for fresh food.
Trade-off: it won’t replace your freezer, and its housing height and door fixing must also suit the kitchen unit.
Worth considering: if you want to keep the fridge and freezer together behind the housing doors.
Trade-off: the total capacity is split between the two compartments, so check each one separately.
Worth considering: if the housing won’t fit the built-in appliances you’re looking for and you’re happy to change your kitchen layout.
Trade-off: you won’t be able to keep the existing door panel and housing as they are; installation becomes a separate kitchen refit project.
| Priority | What to check | What I need |
|---|---|---|
| Housing dimensions | Measure the usable height, width and depth at several points. Compare these with the model’s housing dimensions and installation diagram, not just the appliance dimensions. | I’m keeping the existing housing, so the new appliance must fit inside it and be secured in place. |
| Door-panel fixing | Identify whether the door uses sliding rails or is fixed directly to the appliance door. Check the instructions for the installation method, opening direction and any restrictions that apply to the door panel. | I want to keep my kitchen door panel and make sure both doors open properly. |
| Compartments and capacities | Decide whether you need an integrated freezer. For a fridge-freezer, compare the fridge and freezer capacities in litres separately, and check the defrosting requirements listed for each model. | I already have a separate freezer, or I need to keep a freezer compartment in the housing. |
| Energy consumption and noise | According to the European Commission, fridge energy labels show details including the energy class, annual energy consumption, compartment volumes and airborne noise emissions. Compare these figures for appliances with similar functions and capacities. | Noise matters to me in an open-plan kitchen, and I also want to compare the annual energy consumption of compatible models. |
| Ventilation and installation | Locate the air inlets and outlets in the unit, then follow the model’s installation diagram. Check that the appliance is level and the doors close properly once it’s installed. | I’m keeping the unit, but not at the expense of blocking the airflow needed for installation. |
Bosch, Electrolux and Liebherr product details show different housing heights, so the apparent size of your old appliance isn’t enough to establish whether it will fit.
Measure the housing, take a photo of the model number of the appliance you’re replacing, then compare the dimensions with the new model’s installation diagram.
An incompatible housing may need modifying, or you may have to choose a different appliance.
Bosch describes two different installation methods: sliding rails connect the doors, while a pantograph system fixes the door panel directly to the fridge door.
Identify the mechanism you have and check the instructions for the exact model to confirm that your door panel can be fitted as intended.
The energy class doesn’t tell you the capacity of each compartment or how noisy the appliance is. The European Commission notes that these details also appear on the energy label.
Once you’ve confirmed that the appliance will fit, compare kWh/year, capacities and airborne noise emissions for models with similar functions and capacities.
Ventilation is part of the installation requirements. Bosch advises leaving clear space around its appliances so that airflow isn’t restricted.
Keep the air inlets and outlets specified for the unit clear, and follow the dimensions in the installation diagram for your chosen model.
These brands publish details of built-in models and installation guidance to help you check whether an appliance will fit. Compatibility always depends on the exact model.
Bosch provides details of its built-in, single-door fridges and their fixing systems.
Electrolux offers built-in fridges in several sizes.
Liebherr offers single-door fridges and built-in fridge-freezers with different door-panel fixing systems.
Whirlpool offers single-door fridges and built-in fridge-freezers.
This selection includes three built-in fridge-freezers for keeping both compartments in the kitchen unit, plus a single-door built-in fridge to consider if you have a separate freezer. For each one, check the housing, door panel and ventilation requirements before you decide.
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A compact freezer for a low housing: the product details list a 56 × 122.5 × 55 cm cavity, sliding-rail fixing, and capacities of 174 L for the fridge and 14 L for the freezer. They also state 146 kWh/year, 35 dB and manual freezer defrosting. The door panel isn’t included, so check the ventilation requirements and make sure your door panel is compatible.
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For keeping both compartments in the housing, the product details list a 176 L fridge and a 76 L freezer, as well as door-on-door fixing. They state 150 kWh/year, 34 dB(A), energy class C and No Frost. Check the instructions against your housing and door panel, and make sure the unit’s air vents will remain clear.
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If you want to keep the fridge and freezer integrated, this model is listed with sliding-rail fixing, TwinTech Total No Frost, energy class E and 37 dB(A). Check the housing dimensions and ventilation requirements in the instructions, then confirm the capacity of each compartment before comparing it with another fridge-freezer.
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Worth considering if you already have a separate freezer and are looking for a single-door built-in fridge. The product details state 101 kWh/year, 34 dB and automatic defrosting. Check the model’s capacity, housing dimensions and door-panel fixing before choosing it.
Measure the usable height, width and depth of the housing, then compare them with the model’s specified housing dimensions, not just the appliance dimensions. Also check the door-panel fixing, opening direction and ventilation route shown in the instructions.
Don’t assume the two systems are interchangeable. Bosch describes a rail connecting the doors in a sliding-rail system, while a pantograph-style fixing attaches the door panel directly to the appliance door. Identify your current system and check which one is allowed by the new model’s instructions.
Keep clear the air passages shown in the installation diagram for your chosen model. Bosch recommends at least 200 cm² of clear space behind and beneath its fridges in its installation guidance; don’t apply this figure to another model without checking its instructions.
According to the European Commission, fridge energy labels show details including the energy efficiency class, annual energy consumption, compartment volumes and airborne noise emissions. Once you’ve confirmed that both appliances will fit in your kitchen, compare kWh/year, litres per compartment and noise levels for models with similar functions and capacities.