Caminetti Montegrappa Hydro Wood Fireplaces

Caminetti Montegrappa hydro wood-burning fireplaces combine the appearance of a built-in fireplace with the ability to heat water for a compatible central-heating system.

Unlike an air-heating fireplace, a hydro fireplace transfers a significant proportion of the energy produced by log combustion to the hydraulic circuit, allowing it to supply compatible radiators, hydronic systems and thermal-storage equipment.

The current range includes LIGHT 80 S and MB MEGAIDRO W, two models with different sizes and outputs, both featuring lift-up ceramic-glass doors and CMtech® refractory-lined combustion chambers.

Many products and accessories shown on Matteoda.it can be ordered. Please contact customer service to check delivery times, hydraulic accessories, surrounds and system configurations.

How does a hydro wood fireplace work?

A hydro fireplace transfers heat from wood combustion to water circulating through the integrated heat exchanger.

The heated water can form part of a correctly designed system supplying:

• radiators;
• fan coils;
• underfloor heating;
• buffer tanks;
• domestic hot-water systems where supported;
• other compatible hydronic circuits.

Caminetti Montegrappa hydro wood-fireplace range

LIGHT 80 S

LIGHT 80 S is a wood-burning fireplace designed to heat water.

Main features include:

• rectangular ceramic-glass door;
• lift-up opening;
• tilting opening for glass cleaning;
• CMtech® refractory-lined combustion chamber;
• vermiculite baffle;
• hydro operation;
• Italian 5-Star environmental rating.

Optional accessories are available for open- or closed-expansion-vessel configurations.

MB MEGAIDRO W

MB MEGAIDRO W is the large-format hydro wood fireplace in the range.

It features a wide ceramic-glass lift-up door, CMtech® refractory lining and optional accessories for open or closed expansion vessels.

A dedicated kit is also available for domestic hot-water production.

The MB MEGAIDRO W31 configuration has a declared nominal output of 24.9 kW.

Hydro fireplace or air-heating fireplace?

An air-heating fireplace transfers most useful heat directly to the room or through warm-air distribution.

A hydro fireplace transfers a significant proportion to water and therefore requires a compatible hydraulic heating system.

Hydro fireplace or hydro wood stove?

Both can supply a hydraulic heating system.

A hydro fireplace is designed to be integrated into a custom surround, while a hydro stove is a finished freestanding appliance with its own exterior cladding.

Water output and system sizing

Correct selection should be based primarily on the water output required by the heating system.

Consider building heat losses, radiators, water temperatures, system volume, buffer-tank requirements and any other connected generators.

Buffer tanks

A buffer tank may be required or recommended depending on the appliance and system design.

Its capacity should be established by the system designer or installer.

Open or closed expansion vessel

LIGHT 80 S and MB MEGAIDRO W can be configured using dedicated accessories for open or closed expansion-vessel systems.

The correct solution must be established as part of the hydraulic-system design.

Domestic hot water

MB MEGAIDRO W can be equipped with an optional kit for domestic hot-water production.

This function requires the correct hydraulic configuration and should not be considered standard in every installation.

CMtech® refractory lining

The combustion chambers use CMtech® refractory material.

The exact firebox construction depends on the individual model.

Lift-up ceramic-glass door

Both current models use a large lift-up ceramic-glass door.

The door can also tilt according to the manufacturer's design to facilitate glass cleaning.

Fireplace surround

The hydro fireplace must be incorporated into a surround that complies with the manufacturer's technical requirements.

The project must allow for hydraulic connections, flue connection, maintenance access, clearances and suitable materials.

Italian 5-Star environmental rating

The current LIGHT 80 S and MB MEGAIDRO W models are declared as 5-Star appliances.

Always verify the documentation for the exact model and configuration.

Italian Conto Termico 3.0

Caminetti Montegrappa publishes current Conto Termico 3.0 documentation for selected hydro wood fireplaces.

The MB MEGAIDRO W31 has documentation under the Italian D.M. 7 August 2025 with a declared nominal output of 24.9 kW.

Actual incentive eligibility depends on the complete installation and replacement conditions.

Flue and chimney system

A hydro wood fireplace requires a correctly sized flue and chimney system.

Internal diameter, height, draught, insulation, bends and combustion-air supply must all be evaluated.

Choosing firewood

Use properly seasoned natural firewood in accordance with the manufacturer's instructions.

Excessively wet wood can reduce combustion quality and increase deposits inside the appliance and chimney.

How to choose a hydro wood fireplace

Compare:

• water output;
• building heat demand;
• firebox dimensions;
• system water volume;
• heating terminals;
• buffer-tank requirements;
• expansion-vessel configuration;
• domestic hot-water requirements;
• surround design;
• environmental rating;
• chimney requirements.

Order Caminetti Montegrappa hydro wood fireplaces from Matteoda.it

Matteoda.it offers the LIGHT 80 S and MB MEGAIDRO W hydro wood fireplaces, covering different heating-output and installation requirements.

Products, hydraulic accessories and surrounds are generally supplied to order. Please contact Matteoda customer service to check delivery times and the most suitable system configuration.