Palazzetti Ecofire Tiffany Idro V21 TC: 20.5 kW slim hydro pellet stove

Palazzetti Ecofire Tiffany Idro V21 TC is a 20.5 kW sealed fan-assisted hydro pellet stove designed to supply a high proportion of its useful heat to a central-heating water circuit while also heating the installation room directly.

At rated output, the stove delivers up to 19 kW to the heating water from a total nominal output of 20.5 kW.

With a depth of only 36 cm, Tiffany Idro TC is particularly suitable for hallways, narrow rooms, passage areas and installations where floor space is limited.

Key features of Palazzetti Tiffany Idro V21 TC

• 20.5 kW nominal heat output.
• 19 kW nominal output to water.
• Minimum total output approximately 4.2 kW.
• Minimum water output approximately 3.6 kW.
• CC50 sealed combustion.
• Hydronic heating plus fan-assisted room heating.
• Only 36 cm deep.
• Painted-steel cladding.
• Double-glazed door with black tempered aesthetic glass.
• Balanced Door.
• Integrated hydronic unit.
• Integrated anti-condensation valve.
• Digital control display.
• Universal Gateway ready.
• Complete Burning System.
• Self Cleaning System for burn pot and heat-exchanger tubes.
• Speedy Clean.
• 30 kg pellet hopper.
• Pellet consumption from 0.91 to 4.51 kg/h.
• A++ energy class.
• Italian 5-star environmental rating.

20.5 kW total output and up to 19 kW to water

When choosing a hydro pellet stove it is important to distinguish between total useful output and the amount of heat transferred to the water circuit.

Tiffany Idro V21 TC provides up to 20.5 kW total nominal output, of which approximately 19 kW is transferred to the heating water.

At minimum output, the stove can modulate to approximately 4.2 kW total, with around 3.6 kW transferred to water.

Hydro heating with fan-assisted room heating

Tiffany Idro V21 TC heats the technical water of a compatible central-heating system while simultaneously distributing warm air into the room where the stove is installed.

Depending on the hydraulic design, it can be integrated with radiators, fan coils, compatible underfloor-heating systems, thermal storage and other heat generators.

Domestic hot-water production requires a correctly designed external system with a suitable cylinder, storage tank or heat exchanger.

Slim 36 cm design

Tiffany Idro TC measures approximately 101 × 36 × 116 cm.

The shallow body allows installation in spaces where a conventional hydro stove would be difficult to accommodate, subject to the manufacturer's safety clearances.

CC50 sealed combustion

Tiffany Idro V21 TC is a CC50 certified sealed pellet stove.

CC50 means that combustion-chamber airtightness is verified at a pressure difference of up to 50 Pa according to EN 16510.

This is particularly relevant in well-insulated and low-energy buildings and homes equipped with controlled mechanical ventilation.

Integrated hydronic unit

The appliance includes an integrated hydronic unit with circulation pump, safety valve, closed expansion vessel and pressure gauge.

The complete heating system must nevertheless be correctly designed according to the building's heat demand, water volume, heating emitters, temperature regime and any thermal storage.

Integrated anti-condensation valve

An integrated anti-condensation valve helps manage return-water temperatures and reduce operating conditions that may promote condensation inside the heat exchanger.

Self Cleaning System

The Self Cleaning System automatically cleans both the pellet burn pot and the heat-exchanger tubes, helping maintain consistent heat transfer and reduce routine manual intervention.

Complete Burning System

The Complete Burning System promotes continuous reburning of combustion residues, helping reduce ash production and improve fuel utilisation.

Speedy Clean and Balanced Door

The large ash collection drawer and Speedy Clean system simplify routine cleaning operations.

The Balanced Door self-balancing mechanism is designed to maintain correct combustion-chamber closure during temperature changes.

Performance and pellet consumption

The V21 version operates from approximately 4.2 to 20.5 kW total output, with approximately 3.6 to 19 kW transferred to water.

The 2027 Palazzetti price list specifies approximately 94% efficiency.

Pellet consumption ranges from approximately 0.91 to 4.51 kg/h, while the hopper holds 30 kg of pellet.

Palazzetti Ecofire Tiffany Idro V21 TC technical specifications

Installation and heating system

Tiffany Idro V21 TC must be connected to a correctly designed hydronic heating system and an appropriately sized chimney.

With approximately 19 kW delivered to water, correct system sizing is especially important, including emitters, water volume, return temperatures, control strategy and any thermal storage.

A++ energy class, 5-star rating and incentives

Palazzetti Ecofire Tiffany Idro V21 TC is rated A++ and achieves the Italian 5-star environmental rating under D.M. 186.

Palazzetti documentation refers to Conto Termico for Tiffany Idro TC. Eligibility for Conto Termico 3.0 depends on the type of project, the appliance being replaced and compliance with all applicable technical and administrative requirements.

For further information, see our guide to Conto Termico 3.0 and incentives for biomass heating appliances.